Driving control circuit and control equipment of alternating current switch machine

Abstract

The invention discloses a driving control circuit and control equipment of an alternating current switch machine. The driving control circuit comprises a first driving control module, a second driving control module and a control module, the driving control module comprises a left operation relay, a right operation relay, a first electronic switch, a second electronic switch and a third electronic switch; the left operation relay comprises a first left operation switch, a second left operation switch, a third left operation switch and a fourth left operation switch; the right operation relay comprises a first right operation switch, a second right operation switch, a third right operation switch and a fourth right operation switch; a coil of the left operation relay and a coil of the right operation relay are both electrically connected with the control module, the electronic switches are further electrically connected with the control module, the alternating-current switch machine can be controlled to complete position change by controlling the states of the electronic switches, and in the process of driving the alternating-current switch machine to operate, the position of the alternating-current switch machine can be changed. The cable condition of the alternating-current switch machine can be detected at the same time, and the accuracy and safety of driving control of the alternating-current switch machine are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit control, and particularly to a drive control circuit and a control device for an AC switch machine. Background Art

[0002] The switching of railway turnouts is completed by an AC switch machine. Currently, there are various types of AC switch machines, and the control devices for driving the AC switch machines are also different.

[0003] The existing control devices for AC switch machines have low control efficiency for the AC switch machines and cannot accurately detect the position changes during the operation of the AC switch machines, resulting in great potential safety hazards to the turnout operation, and manual repeated verification is required, which is a cumbersome process. Summary of the Invention

[0004] The present invention provides a drive control circuit and a control device for an AC switch machine to improve the accuracy and safety of the drive control of the AC switch machine.

[0005] According to one aspect of the present invention, there is provided a drive control circuit for an AC switch machine, including: a first drive control module, a second drive control module, and a control module;

[0006] Both the first drive control module and the second drive control module include: a left operation relay, a right operation relay, a first electronic switch, a second electronic switch, and a third electronic switch;

[0007] The left operation relay includes a first left operation switch, a second left operation switch, a third left operation switch, and a fourth left operation switch; the right operation relay includes a first right operation switch, a second right operation switch, a third right operation switch, and a fourth right operation switch;

[0008] The first end of the first left operation switch and the first end of the first right operation switch are both electrically connected to the N-phase output terminal of the AC power supply through the first electronic switch, and the second end of the first left operation switch and the second end of the first right operation switch are both electrically connected to the AC switch machine;

[0009] The first end of the second left operation switch and the first end of the second right operation switch are both electrically connected to the A-phase output terminal of the AC power supply through the second electronic switch, and the second end of the second left operation switch and the second end of the second right operation switch are both electrically connected to the AC switch machine;

[0010] The first end of the third left operation switch and the first end of the third right operation switch are both electrically connected to the B-phase output terminal of the AC power supply through the third electronic switch, and the second end of the third left operation switch and the second end of the third right operation switch are both electrically connected to the AC switch machine;

[0011] The first ends of the fourth left operating switch and the fourth right operating switch are both electrically connected to the C-phase output terminal of the AC power supply, and the second ends of the fourth left operating switch and the fourth right operating switch are both electrically connected to the AC switch machine.

[0012] The coils of the left operating relay and the right operating relay are both electrically connected to the control module, and the first electronic switch, the second electronic switch, and the third electronic switch are also all electrically connected to the control module.

[0013] Optionally, when the AC switch machine is a four-wire AC switch machine, the second ends of the first left operating switch and the first right operating switch are both electrically connected to the third wiring cable of the four-wire AC switch machine;

[0014] The second ends of the second left operating switch and the second right operating switch are both electrically connected to the first wiring cable of the four-wire AC switch machine;

[0015] The second end of the third left operating switch is electrically connected to the second wiring cable of the four-wire AC switch machine; the second end of the third right operating switch is electrically connected to the first wiring cable of the four-wire AC switch machine;

[0016] The second ends of the fourth left operating switch and the fourth right operating switch are both electrically connected to the fourth wiring cable of the four-wire AC switch machine.

[0017] Optionally, when the AC switch machine is a six-wire AC switch machine, the second ends of the first left operating switch and the first right operating switch are both floating;

[0018] The second end of the second left operating switch is electrically connected to the first wiring cable of the six-wire AC switch machine, and the second end of the second right operating switch is electrically connected to the third wiring cable of the six-wire AC switch machine;

[0019] The second end of the third left operating switch is electrically connected to the second wiring cable of the six-wire AC switch machine; the second end of the third right operating switch is electrically connected to the fourth wiring cable of the six-wire AC switch machine;

[0020] The second end of the fourth left operating switch is electrically connected to the fifth wiring cable of the six-wire AC switch machine; the second end of the fourth right operating switch is electrically connected to the third wiring cable of the six-wire AC switch machine.

[0021] Optionally, the first drive control module and the second drive control module also both include: a safety cut-off relay;

[0022] The safety cut-off relay includes a first safety switch, a second safety switch, a third safety switch, and a fourth safety switch;

[0023] The first safety switch is electrically connected between the first electronic switch and the N-phase output terminal of the AC power supply;

[0024] The second safety switch is electrically connected between the second electronic switch and the A-phase output terminal of the AC power supply;

[0025] The third safety switch is electrically connected between the third electronic switch and the B-phase output terminal of the AC power supply;

[0026] The first end of the fourth safety switch is electrically connected to the first ends of the fourth left operating switch and the fourth right operating switch, and the second end of the fourth safety switch is electrically connected to the C-phase output terminal of the AC power supply;

[0027] The coil of the safety cut-off relay is electrically connected to the control module.

[0028] Optionally, the first drive control module and the second drive control module also each include: a first voltage acquisition unit, a second voltage acquisition unit, and a third voltage acquisition unit;

[0029] The first voltage acquisition unit is electrically connected between the N-phase output terminal and the A-phase output terminal of the AC power supply;

[0030] The second voltage acquisition unit is electrically connected between the N-phase output terminal and the B-phase output terminal of the AC power supply;

[0031] The third voltage acquisition unit is electrically connected between the N-phase output terminal and the C-phase output terminal of the AC power supply;

[0032] The first voltage acquisition unit, the second voltage acquisition unit, and the third voltage acquisition unit are also each electrically connected to the control module.

[0033] Optionally, the first drive control module and the second drive control module also each include: a first current acquisition unit, a second current acquisition unit, and a third current acquisition unit;

[0034] The first current acquisition unit is electrically connected between the A-phase output terminal of the AC power supply and the second electronic switch;

[0035] The second current acquisition unit is electrically connected between the B-phase output terminal of the AC power supply and the third electronic switch;

[0036] The first end of the third current acquisition unit is electrically connected to the C-phase output end of the AC power supply, and the second end of the third current acquisition unit is electrically connected to the first ends of the fourth left operation switch and the fourth right operation switch;

[0037] The first current acquisition unit, the second current acquisition unit, and the third current acquisition unit are also all electrically connected to the control module.

[0038] Optionally, the control module includes a first controller and a second controller;

[0039] The first controller is communicatively connected to the second controller, and both the first controller and the second controller are communicatively connected to the host computer.

[0040] Optionally, the control module is configured to:

[0041] When a right operation control signal is obtained, control each right operation switch in the right operation relay and the electronic switch unit to conduct in sequence; or, when a left operation control signal is obtained, control each left operation switch in the left operation relay and the electronic switch unit to conduct in sequence; wherein, each of the right operation switches is the first right operation switch, the second right operation switch, the third right operation switch, and the fourth right operation switch; each of the left operation switches is the first left operation switch, the second left operation switch, the third left operation switch, and the fourth left operation switch; the electronic switch unit includes the first electronic switch, the second electronic switch, and the third electronic switch;

[0042] When the position of the AC switch machine is in the middle position, control the first electronic switch to disconnect;

[0043] When it is determined that the three-phase current supplied to the AC switch machine is phase-deficient, control the second electronic switch and the third electronic switch to disconnect;

[0044] After controlling the second electronic switch and the third electronic switch to disconnect, control the left operation relay and the right operation relay to disconnect.

[0045] Optionally, it further includes: a first indication acquisition module and a second indication acquisition module;

[0046] Both the first indication acquisition module and the second indication acquisition module are electrically connected to the control module;

[0047] The control module is further configured to: after obtaining the right operation control signal and before controlling the right operation switches in the right operation relay and the electronic switch unit to conduct in sequence, obtain the indication acquisition signals provided by the first indication acquisition module and the second indication acquisition module; when determining that there is no cable fault according to the indication acquisition signals, control the right operation switches in the right operation relay and the electronic switch unit to conduct in sequence.

[0048] And / or, the control module is further configured to: after obtaining the left operation control signal and before controlling the left operation switches in the left operation relay and the electronic switch unit to conduct in sequence, obtain the indication acquisition signals provided by the first indication acquisition module and the second indication acquisition module; when determining that there is no cable fault according to the indication acquisition signals, control the left operation switches in the left operation relay and the electronic switch unit to conduct in sequence.

[0049] According to another aspect of the present invention, there is provided a control device for an AC switch machine, including: at least two of the above-mentioned drive control circuits of the AC switch machine.

[0050] Optionally, the control device for the AC switch machine further includes: a first switch machine base plate, a four-wire AC switch machine terminal board, and a six-wire AC switch machine terminal board;

[0051] The first switch machine base plate includes left operation connection terminals corresponding to each of the left operation switches and right operation connection terminals corresponding to each of the right operation switches; each of the left operation switches is respectively a first left operation switch, a second left operation switch, a third left operation switch, and a fourth left operation switch; each of the right operation switches is respectively a first right operation switch, a second right operation switch, a third right operation switch, and a fourth right operation switch;

[0052] Each of the left operation connection terminals and each of the right operation connection terminals are electrically connected to a four-wire AC switch machine through the four-wire AC switch machine terminal board;

[0053] Alternatively, each of the left operation connection terminals and each of the right operation connection terminals are electrically connected to a six-wire AC switch machine through the six-wire AC switch machine terminal board.

[0054] The drive control circuit of the AC switch machine provided by the present invention, by setting a first drive control module, a second drive control module and a control module, enables the control module to control one AC switch machine through the first drive control module and simultaneously control another AC switch machine through the second drive control module, which can meet the working requirements of the track turnout that needs to drive two AC switch machines. By setting that both the first drive control module and the second drive control module include a left operation relay, a right operation relay, a first electronic switch, a second electronic switch and a third electronic switch, and setting that the left operation relay, the right operation relay and each electronic switch are electrically connected between the four-phase output terminal of the AC power supply and the AC switch machine, the signal speed path of the AC power supply to the AC switch machine can be controlled by controlling the states of the left operation relay, the right operation relay and each electronic switch. By controlling the states of each electronic switch, the AC switch machine can be controlled to complete the position change, and the current of each phase cable can be obtained during the process of controlling the rotation of the AC switch machine. The position of the AC switch machine during the rotation process can be determined according to the current situation of each phase cable, and during the process of driving the AC switch machine to operate, the cable situation of the AC switch machine can be detected simultaneously, improving the accuracy and safety of the drive control of the AC switch machine.

[0055] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Brief Description of the Drawings

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0057] Figure 1 It is a schematic structural diagram of a drive control circuit of an AC switch machine provided by an embodiment of the present invention;

[0058] Figure 2 It is a schematic circuit diagram of a drive control module provided by an embodiment of the present invention;

[0059] Figure 3 It is a schematic structural diagram of another drive control circuit of an AC switch machine provided by an embodiment of the present invention;

[0060] Figure 4 It is a schematic structural diagram of another drive control module provided by an embodiment of the present invention;

[0061] Figure 5It is a schematic structural diagram of another driving control circuit of an AC switch machine provided by an embodiment of the present invention;

[0062] Figures 6 - 8 It is an operating schematic diagram of a driving control module provided by an embodiment of the present invention;

[0063] Figure 9 and Figure 10 It is an operating schematic diagram of another driving control module provided by an embodiment of the present invention;

[0064] Figure 11 It is a schematic structural diagram of yet another driving control circuit of an AC switch machine provided by an embodiment of the present invention;

[0065] Figure 12 It is a schematic structural diagram of a control device of an AC switch machine provided by an embodiment of the present invention;

[0066] Figure 13 It is a schematic structural diagram of another control device of an AC switch machine provided by an embodiment of the present invention;

[0067] Figure 14 It is a schematic structural diagram of yet another control device of an AC switch machine provided by an embodiment of the present invention;

[0068] Figure 15 It is a schematic structural diagram of yet another control device of an AC switch machine provided by an embodiment of the present invention;

[0069] Figure 16 It is a schematic structural diagram of yet another control device of an AC switch machine provided by an embodiment of the present invention. Detailed implementation manners

[0070] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0071] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0072] Figure 1 FIG. is a schematic structural diagram of a drive control circuit for an AC switch machine provided by an embodiment of the present invention. As Figure 1 shown, the drive control circuit 01 of the AC switch machine (hereinafter referred to as the drive control circuit 01) includes: a first drive control module 011, a second drive control module 012, and a control module 013.

[0073] Specifically, the drive control circuit 01 may include two drive control modules to be able to drive and control two AC switch machines M respectively. Among them, the two drive control modules are respectively a first drive control module 011 and a second drive control module 012, and the control module 013 is electrically connected to the first drive control module 011 and the second drive control module 012 respectively, so that the control module 013 can drive and control the two AC switch machines M through the first drive control module 011 and the second drive control module 012 respectively. For example, the control module 013 can drive the first AC switch machine M1 through the first drive control module 011, and drive the second AC switch machine M2 through the second drive control module 012, which can meet the requirement that two AC switch machines need to act simultaneously when the track turnout is switched. Among them, when the drive control circuit 01 drives the two AC switch machines M respectively, the types of the two AC switch machines M (i.e., the first AC switch machine M1 and the second AC switch machine M2) can be the same. For example, both the first AC switch machine M1 and the second AC switch machine M2 can be four-wire AC switch machines, or both the first AC switch machine M1 and the second AC switch machine M2 can be six-wire AC switch machines. Or, when the drive control circuit 01 drives the two AC switch machines M respectively, the types of the two AC switch machines M can also be different. For example, one of the first AC switch machine M1 and the second AC switch machine M2 is a four-wire AC switch machine, and the other is a six-wire AC switch machine.

[0074] The circuit structures of the first drive control module 011 and the second drive control module 012 can be the same. Figure 2It is a schematic circuit diagram of a drive control module provided by an embodiment of the present invention. With reference to Figure 1 and Figure 2 , both the first drive control module 011 and the second drive control module 012 include: a left operation relay 10, a right operation relay 20, a first electronic switch S1, a second electronic switch S2, and a third electronic switch S3. The left operation relay 10 includes a first left operation switch K11, a second left operation switch K12, a third left operation switch K13, and a fourth left operation switch K14; the right operation relay 20 includes a first right operation switch K21, a second right operation switch K22, a third right operation switch K23, and a fourth right operation switch K24. The first end of the first left operation switch K11 and the first end of the first right operation switch K21 are both electrically connected to the N-phase output terminal of the AC power supply Vac through the first electronic switch S1, and the second end of the first left operation switch K11 and the second end of the first right operation switch K21 are both electrically connected to the AC switch machine M. The first end of the second left operation switch K12 and the first end of the second right operation switch K22 are both electrically connected to the A-phase output terminal of the AC power supply Vac through the second electronic switch S2, and the second end of the second left operation switch K12 and the second end of the second right operation switch K22 are both electrically connected to the AC switch machine M. The first end of the third left operation switch M13 and the first end of the third right operation switch M23 are both electrically connected to the B-phase output terminal of the AC power supply Vac through the third electronic switch S3, and the second end of the third left operation switch K13 and the second end of the third right operation switch K23 are both electrically connected to the AC switch machine M. The first ends of the fourth left operation switch and the fourth right operation switch K24 are both electrically connected to the C-phase output terminal of the AC power supply Vac, and the second end of the fourth left operation switch K14 and the second end of the fourth right operation switch K24 are both electrically connected to the AC switch machine M. Figure 3 It is a schematic structural diagram of another drive control circuit of an AC switch machine provided by an embodiment of the present invention. With reference to Figure 1 , Figure 2 and Figure 3 , the coil 10a of the left operation relay 10 and the coil 20a of the right operation relay 20 are both electrically connected to the control module 013, and further, the first electronic switch 31, the second electronic switch 32, and the third electronic switch 33 are also all electrically connected to the control module 013.

[0075] Specifically, each left-operating switch (the first left-operating switch K11, the second left-operating switch K12, the third left-operating switch K13, and the fourth left-operating switch K14) in the left-operating relay 10 can be a normally open switch, and each right-operating switch (the first right-operating switch K21, the second right-operating switch K22, the third right-operating switch K23, and the fourth right-operating switch K24) in the right-operating relay 20 can be a normally open switch. When the control module 013 receives a left-operating control instruction, it is necessary to control the AC switch machine M to rotate from the right position to the left position. At this time, each left-operating switch in the left-operating relay 10 can be controlled to close, and then each electronic switch (the first electronic switch S1, the second electronic switch S2, and the third electronic switch S3) can be controlled to conduct, so that the control module 013 can control the rotation of the AC switch machine M through the conducting electronic switches and left-operating switches, making the AC switch machine M change from the right position to the left position. When the control module 013 receives a right-operating control instruction, it is necessary to control the AC switch machine M to rotate from the left position to the right position. At this time, each right-operating switch in the right-operating relay 20 can be controlled to close and each left-operating switch in the left-operating relay 10 can be controlled to open, and then each electronic switch (the first electronic switch S1, the second electronic switch S2, and the third electronic switch S3) can be controlled to conduct, so that the control module 013 can control the rotation of the AC switch machine M through the conducting electronic switches and right-operating switches, making the turnout switch of the AC switch machine M change from the left position to the right position.

[0076] When controlling the turnout switch of the AC switch machine M to change from the right position to the left position and when controlling the turnout switch of the AC switch machine M to change from the left position to the right position, the control module 013 can control the position change of the AC switch machine M by controlling the states of the electronic switches, and can obtain the current of each phase cable during the rotation of the AC switch machine M, and determine the position of the AC switch machine M during the rotation according to the current conditions of each phase cable.

[0077] It can be understood that controlling the operation and rotation of the AC switch machine M to change its position refers to controlling the rotation of the motor in the AC switch machine M, and driving the turnout switch in the AC switch machine M to change its position through the rotation of the motor.

[0078] Exemplarily, based on the above drive control circuit, the control module 013 can be specifically used to execute the corresponding drive control method, and the drive control method can include the following steps:

[0079] S01. When a right-operating control signal is obtained, control each right-operating switch and the electronic switch unit 30 in the right-operating relay 20 to conduct in sequence; or when a left-operating control signal is obtained, control each left-operating switch and the electronic switch unit 30 in the left-operating relay 10 to conduct in sequence.

[0080] Among them, each right operation switch is respectively a first right operation switch K21, a second right operation switch K22, a third right operation switch K23, and a fourth right operation switch K24; each left operation switch is respectively a first left operation switch K11, a second left operation switch K12, a third left operation switch K13, and a fourth left operation switch K14; the electronic switch unit 30 includes a first electronic switch S1, a second electronic switch S2, and a third electronic switch S3.

[0081] Specifically, the right operation control signal and the left operation control signal can be control signals sent by an operator to the control module 013 through an upper computer, a key, a touch display device, etc. And the first electronic switch S1, the second electronic switch S2, and the third electronic switch S3 can be formed into the electronic switch unit 30. When performing right operation control on the AC switch machine M, the initial position of the AC switch machine M is the left position. At this time, each right operation switch in the right operation relay 20 can be controlled to close first, and then each electronic switch in the electronic switch unit 30 can be controlled to conduct. In this way, each right operation switch in the right operation relay 20 can be closed without power, and it can be avoided that the arc damages each right operation switch when closing the relay switch with power. Similarly, when performing left operation control on the AC switch machine M, the initial position of the AC switch machine M is the right position. At this time, each left operation switch in the left operation relay 10 is controlled to close first, and then each electronic switch in the electronic switch unit 30 is controlled to conduct. In this way, each left operation switch in the left operation relay 10 can be closed without power, and it can be avoided that the arc damages each left operation switch when closing the relay switch with power.

[0082] S02. When the position of the AC switch machine M is the middle position, control the first electronic switch S1 to disconnect.

[0083] Specifically, the AC power supply Vac is a three-phase four-wire power supply including an A-phase output terminal, a B-phase output terminal, a C-phase output terminal, and an N-phase output terminal. When driving the AC switch machine M to rotate, each electronic switch can be controlled to be in the conducting state in the initial stage, so that the A-phase output terminal, B-phase output terminal, C-phase output terminal, and N-phase output terminal of the AC power supply Vac simultaneously output power signals to the AC switch machine M to drive the AC switch machine M to start rotating. When driving the AC switch machine M to rotate from the initial position to the middle position, that is, when the motor rotates and the position of the switch of the turnout changes from the left position to the middle position or from the right position to the middle position, at this time, the first electronic switch S1 can be controlled to disconnect, so that the AC power supply Vac stops providing the N-phase power signal to the AC switch machine M. Since the AC switch machine M has started to rotate at this time, the motor in the AC switch machine M can continue to rotate according to the A-phase power signal, B-phase power signal, and C-phase power signal in the subsequent stage.

[0084] Exemplarily, when detecting whether the position of the AC switch machine M is the middle position, timing can be performed after all the electronic switches are turned on, that is, obtaining the duration during which all the electronic switches are turned on. It can also be understood as obtaining the duration during which the AC power supply Vac simultaneously provides the A-phase power signal, B-phase power signal, C-phase power signal, and N-phase power signal to the AC switch machine M. When the duration reaches the preset time, it can be determined that the position of the AC switch machine M is the middle position. According to the different specifications of the AC switch machine M, the preset time can also be different. The specific preset time can be pre-tested and calibrated. In this way, when controlling the operation of the AC switch machine M, the obtained duration can be directly compared with the preset time, so as to determine the situation where the AC switch machine M rotates to the middle position, simplify the position detection program of the AC switch machine M, and thus help improve the driving control efficiency of the AC switch machine M.

[0085] S03. When it is determined that there is a phase loss in the three-phase current provided to the AC switch machine M, control the second electronic switch S2 and the third electronic switch S3 to turn off.

[0086] S04. After controlling the second electronic switch S2 and the third electronic switch S3 to turn off, control both the left operation relay 10 and the right operation relay 20 to turn off.

[0087] Specifically, after controlling the first electronic switch to turn off, the phase loss situation of the three-phase current provided to the AC switch machine M can be detected, that is, detecting the phase loss situation of the A-phase power signal, B-phase power signal, and C-phase power signal. When it is determined that there is a phase loss situation, the second electronic switch S2 and the third electronic switch S3 can be controlled to turn off first, and then both the left operation relay 10 and the right operation relay 20 can be controlled to turn off. It can be understood that when all the left operation switches and all the right operation switches are normally open switches, the initial state of all the left operation switches and all the right operation switches is the off state. Therefore, if the AC switch machine M is controlled for left operation, after controlling the second electronic switch S2 and the third electronic switch S3 to turn off, each left operation switch in the left operation relay 10 is controlled to turn off, so as to avoid the relay switch from operating with electricity and protect the left operation relay 10 from being damaged by the instantaneous high voltage. If the AC switch machine M is controlled for right operation, after controlling the second electronic switch S2 and the third electronic switch S3 to turn off, each right operation switch in the right operation relay 20 is controlled to turn off, so as to avoid the relay switch from operating with electricity and protect the right operation relay 20 from being damaged by the instantaneous high voltage.

[0088] Among them, after controlling the first electronic switch S1 to disconnect, if the AC switch machine M fails to rotate to the middle position due to a cable fault, a phase loss situation will occur. Also, a phase loss situation will occur after the AC switch machine M rotates to the target position (left position or right position) in the absence of a cable fault, and the phase loss situations in both cases are different. Therefore, if there is a phase loss in the three-phase current output to the AC switch machine M, the power transmission path can be controlled to disconnect first, and then it can be determined whether the AC switch machine M rotates to the target position or there is a cable fault according to the current phase loss situation.

[0089] The drive control circuit of the AC switch machine provided by the embodiment of the present invention, by setting a first drive control module, a second drive control module and a control module, enables the control module to control one AC switch machine through the first drive control module, and at the same time can control another AC switch machine through the second drive control module, which can meet the working requirements of the track turnout that needs to drive two AC switch machines. By setting that both the first drive control module and the second drive control module include a left operation relay, a right operation relay, a first electronic switch, a second electronic switch and a third electronic switch, and setting the left operation relay, the right operation relay and each electronic switch to be electrically connected between the four-phase output terminal of the AC power supply and the AC switch machine, the signal transmission path from the AC power supply to the AC switch machine can be controlled by controlling the states of the left operation relay, the right operation relay and each electronic switch. By controlling the states of each electronic switch, the position change of the AC switch machine can be completed, and the current of each phase cable can be obtained during the process of controlling the rotation of the AC switch machine. The position of the AC switch machine during the rotation process can be determined according to the current situation of each phase cable, and during the process of driving the AC switch machine to operate, the cable situation of the AC switch machine can be detected simultaneously, improving the accuracy and safety of the drive control of the AC switch machine.

[0090] Exemplarily, the left-operated relay 10 and the right-operated relay 20 can be forced-guided relays, and both the left-operated relay 10 and the right-operated relay 20 can include five normally open switches and one normally closed switch. That is, in addition to each left-operated switch, the left-operated relay 10 can also include a left-operated detection normally open switch and a left-operated detection normally closed switch (not shown in the figure). One end of the left-operated detection normally open switch and the left-operated detection normally closed switch can receive a voltage signal (which can be a low voltage signal such as 5V or 3.3V), and the other end of the left-operated detection normally open switch and the left-operated detection normally closed switch can be electrically connected to the control module 013. The control module 013 can detect the fault condition of the left-operated relay 10 by obtaining the potential of the connection interface between the left-operated detection normally open switch and the left-operated detection normally closed switch. For example, when the control module 013 controls each left-operated switch in the left-operated relay 10 to close, if it detects that the potential of the interface electrically connected to the left-operated detection normally open switch is a low potential, and / or the potential of the interface electrically connected to the left-operated detection normally closed switch is a high potential, it is determined that there is a fault in the switch of the left-operated relay 10. If it detects that the potential of the interface electrically connected to the left-operated detection normally open switch is a high potential and the potential of the interface electrically connected to the left-operated detection normally closed switch is a low potential, it is determined that there is no fault in the switch of the left-operated relay. Similarly, the right-operated relay 20 can also include a right-operated detection normally open switch and a right-operated detection normally closed switch (not shown in the figure). One end of the right-operated detection normally open switch and the right-operated detection normally closed switch can receive a voltage signal (which can be a low voltage signal such as 5V or 3.3V), and the other end of the right-operated detection normally open switch and the right-operated detection normally closed switch can be electrically connected to the control module 013. The control module 013 can detect the fault condition of the right-operated relay 20 by obtaining the potential of the connection interface between the right-operated detection normally open switch and the right-operated detection normally closed switch. The specific fault condition detection method is the same as the fault detection method of the above-mentioned left-operated relay 10 and will not be elaborated here.

[0091] Figure 4 is another structural schematic diagram of the drive control module provided by the embodiment of the present invention, as Figure 4As shown, the first drive control module 011 and the second drive control module 012 also both include: a safety cut-off relay 40; the safety cut-off relay 40 includes a first safety switch K41, a second safety switch K42, a third safety switch K43, and a fourth safety switch K44; the first safety switch K41 is electrically connected between the first electronic switch S1 and the N-phase output terminal of the AC power supply Vac; the second safety switch K42 is electrically connected between the second electronic switch S2 and the A-phase output terminal of the AC power supply Vac; the third safety switch K43 is electrically connected between the third electronic switch S3 and the B-phase output terminal of the AC power supply Vac; the first end of the fourth safety switch K44 is electrically connected to the first ends of the fourth left operating switch K14 and the fourth right operating switch K24, and the second end of the fourth safety switch K44 is electrically connected to the C-phase output terminal of the AC power supply Vac. Figure 5 is a schematic structural diagram of another drive control circuit of an AC switch machine provided by an embodiment of the present invention. With reference to Figure 1 , Figure 4 and Figure 5 , the coil 40a of the safety cut-off relay 40 is electrically connected to the control module.

[0092] Specifically, each safety switch in the safety cut-off relay 40 (i.e., the first safety switch K41, the second safety switch K42, the third safety switch K43, and the fourth safety switch K44) can be a normally open switch. When the coil 40a is energized, each safety switch closes, and when the coil 40a is de-energized, each safety switch opens. By setting the safety cut-off relay 40, it is possible to prevent the situation where the left operating switch in the left operating relay 10 and the right operating switch in the right operating relay 20 are stuck and cannot be disconnected, resulting in the AC switch machine M being unable to cut off power.

[0093] Exemplarily, the safety cut-off relay 40 can also include a safety detection normally open switch and a safety detection normally closed switch (not shown in the figure). One end of the safety detection normally open switch and the safety detection normally closed switch receives a voltage signal (which can be a low voltage signal such as 5V or 3.3V), and the other end of the safety detection normally open switch and the safety detection normally closed switch is electrically connected to the control module 013. The control module 013 can detect the fault condition of the safety cut-off relay 40 by obtaining the potential of the connection interface with the safety detection normally open switch and the safety detection normally closed switch. The specific fault condition detection method is the same as the fault detection method of the above-mentioned left operating relay 10, and will not be elaborated here.

[0094] Optionally, continue to refer to Figure 4, the first drive control module 011 and the second drive control module 012 also both include: a first voltage acquisition unit V1, a second voltage acquisition unit V2, and a third voltage acquisition unit V3; the first voltage acquisition unit V1 is electrically connected between the N-phase output terminal and the A-phase output terminal of the AC power supply Vac; the second voltage acquisition unit V2 is electrically connected between the N-phase output terminal and the B-phase output terminal of the AC power supply Vac; the third voltage acquisition unit V3 is electrically connected between the N-phase output terminal and the C-phase output terminal of the AC power supply Vac; refer to Figure 5 , the first voltage acquisition unit V1, the second voltage acquisition unit V2, and the third voltage acquisition unit V3 are also both electrically connected to the control module 013.

[0095] Specifically, since the first voltage acquisition unit V1, the second voltage acquisition unit V2, and the third voltage acquisition unit V3 are all electrically connected to the control module 013, the control module 013 can obtain the voltage between the A-phase output terminal and the N-phase output terminal of the AC power supply Vac through the first voltage acquisition unit V1, obtain the voltage between the B-phase output terminal and the N-phase output terminal of the AC power supply Vac through the second voltage acquisition unit V2, and obtain the voltage between the C-phase output terminal and the N-phase output terminal of the AC power supply Vac through the third voltage acquisition unit V3, that is, can obtain the A-phase voltage, B-phase voltage, and C-phase voltage of the AC power supply Vac through the first voltage acquisition unit V1, the second voltage acquisition unit V2, and the third voltage acquisition unit V3 respectively. When controlling the operation of the AC switch machine M, the control module 013 can first detect whether the obtained A-phase voltage, B-phase voltage, and C-phase voltage are normal. If the A-phase voltage, B-phase voltage, and C-phase voltage are all normal, it can control the actions of each electronic switch and the corresponding relay, which can avoid damage to the relay switch and the AC switch machine M caused by abnormal AC power supply Vac.

[0096] Optionally, continue to refer to Figure 4 and Figure 5 , the first drive control module 011 and the second drive control module 012 also both include: a first current acquisition unit A1, a second current acquisition unit A2, and a third current acquisition unit A3; the first current acquisition unit A1 is electrically connected between the A-phase output terminal of the AC power supply Vac and the second electronic switch S2; the second current acquisition unit A2 is electrically connected between the B-phase output terminal of the AC power supply Vac and the third electronic switch S3; the first end of the third current acquisition unit A3 is electrically connected to the C-phase output terminal of the AC power supply Vac, and the second end of the third current acquisition unit A3 is electrically connected to the first ends of the fourth left operation switch K14 and the fourth right operation switch K24; the first current acquisition unit A1, the second current acquisition unit A2, and the third current acquisition unit A3 are also both electrically connected to the control module 013.

[0097] Specifically, the first current acquisition unit A1, the second current acquisition unit A2, and the third current acquisition unit A3 may all include sampling resistors. By obtaining the voltage across the sampling resistor and the resistance value of the sampling resistor, the acquisition of current signals can be achieved. The first current acquisition unit A1, the second current acquisition unit A2, and the third current acquisition unit A3 are all electrically connected to the control module 013. Then, the control module 013 can obtain the A-phase current through the first current acquisition unit A1, obtain the B-phase current through the second current acquisition unit A2, and obtain the C-phase current through the third current acquisition unit A3. During the process of controlling the operation of the AC switch machine M, the control module 013 can respectively and real-time obtain the A-phase current, B-phase current, and C-phase current through the first current acquisition unit A1, the second current acquisition unit A2, and the third current acquisition unit A3, and determine the phase loss situation based on the A-phase current, B-phase current, and C-phase current, so as to detect the cable fault and position situation of the AC switch machine M. Compared with the prior art method of using Hall sensors to detect current signals, using the first current acquisition unit A1, the second current acquisition unit A2, and the third current acquisition unit A3 can detect more accurate current signals more quickly, which is beneficial to improving the driving efficiency of the AC switch machine M.

[0098] Optionally, continue to refer to Figure 4 and Figure 5 , the first drive control module 011 and the second drive control module 012 also both include: a first fuse F1, a second fuse F2, and a third fuse F3; the first fuse F1 is electrically connected between the A-phase output terminal of the AC power supply Vac and the second electronic switch S2; the second fuse F2 is electrically connected between the B-phase output terminal of the AC power supply Vac and the third electronic switch S3; the first end of the third fuse F3 is electrically connected to the C-phase output terminal of the AC power supply Vac, and the second end of the third fuse F3 is electrically connected to the first ends of the fourth left operation switch K14 and the fourth right operation switch K24. The first fuse F1, the second fuse F2, and the third fuse F3 can be timely disconnected when the current output by the AC power supply Vca is too large, protecting the electronic switch, the relay switch, and the AC switch machine M from being damaged due to overcurrent.

[0099] The drive control circuit can drive and control AC switch machines with different line systems. Corresponding to AC switch machines with different line systems, the connection method between the drive control module and the AC switch machine may be different. The following embodiments will be exemplarily introduced by taking the drive control module to drive and control a four-wire AC switch machine and the drive control module to drive and control a six-wire AC switch machine as examples.

[0100] Figures 6 - 8 is a schematic diagram of the operation of a drive control module provided by an embodiment of the present invention. Refer to Figures 6 - 8In any of the attached drawings, when the AC switch machine M is a four-wire AC switch machine MF, the second ends of the first left operation switch K11 and the first right operation switch K21 are both electrically connected to the third wiring cable XF3 of the four-wire AC switch machine MF; the second end of the second left operation switch K12 is electrically connected to the first wiring cable XF1 of the four-wire AC switch machine MF; the second end of the second right operation switch K22 is electrically connected to the second wiring cable XF2 of the four-wire AC switch machine MF; the second end of the third left operation switch K13 is electrically connected to the second wiring cable XF2 of the four-wire AC switch machine MF; the second end of the third right operation switch K23 is electrically connected to the first wiring cable XF1 of the four-wire AC switch machine MF; the second ends of the fourth left operation switch K14 and the fourth right operation switch K24 are both electrically connected to the fourth wiring cable XF4 of the four-wire AC switch machine MF.

[0101] Exemplarily, the four-wire AC switch machine MF includes four wiring cables and two turnout switches. The four wiring cables are respectively the first wiring cable XF1, the second wiring cable XF2, the third wiring cable XF3, and the fourth wiring cable XF4. The first wiring cable XF1 is electrically connected to the U-phase winding of the motor, the second wiring cable XF2 is electrically connected to the V-phase winding of the motor, the third wiring cable XF3 is electrically connected to the N-phase terminal of the motor (not shown in the figure), and the fourth wiring cable XF4 is electrically connected to the W-phase winding of the motor. The two turnout switches are respectively the first turnout switch m1 and the second turnout switch m2.

[0102] The first turnout switch m1 includes a left-position first contact a1, a left-position second contact a2, a right-position first contact b1, and a right-position second contact b2. The left-position first contact a1 is electrically connected to the right-position first contact b1. On this basis, when the first turnout switch m1 is in the left position (as shown in Figure 6 and Figure 7 ), the left-position first contact a1 is in conduction with the left-position second contact a2; when the first turnout switch m1 is in the right position (as shown in Figure 8 ), the right-position first contact b1 is in conduction with the right-position second contact b2. Similarly, the second turnout switch m2 includes a left-position third contact a3, a left-position fourth contact a4, a right-position third contact b3, and a right-position fourth contact b4. The left-position third contact a3 is electrically connected to the right-position third contact b3. On this basis, when the second turnout switch m2 is in the left position (as shown in Figure 6 ), the left-position third contact a3 is in conduction with the left-position fourth contact a4; when the second turnout switch m2 is in the right position (as shown in Figure 7 and Figure 8As shown in the figure, the third right contact b3 is electrically connected to the fourth right contact b4. Among them, the second right contact b2 of the first switch machine m1 is electrically connected to the fourth left contact a4 of the second switch machine m2, and the second left contact a2 of the first switch machine m1 is electrically connected to the fourth right contact b4 of the second switch machine m2.

[0103] The first wiring cable XF1 is electrically connected to the third left contact a3 through the U-phase winding. The third wiring cable XF3 is electrically connected to the second right contact b2 and the fourth left contact a4. The second wiring cable XF2 is electrically connected to the first right contact b1 through the V-phase winding, and the fourth wiring cable XF4 is electrically connected to the second left contact a2 through the W-phase winding.

[0104] The above is an exemplary introduction to the internal connection of the four-wire AC switch machine MF. In this way, when the four-wire AC switch machine MF is running, different signal transmission circuits will be formed due to the different positions of the two switch machines in the four-wire AC switch machine MF. Therefore, during the process of driving the four-wire AC switch machine MF to rotate, the current signal of the signal transmission circuit can be detected to determine the position of the four-wire AC switch machine MF and the cable fault situation according to the current signal.

[0105] Exemplarily, the processes of controlling the four-wire AC switch machine MF to rotate from the left position to the right position and from the right position to the left position are similar. The embodiments of the present invention exemplarily introduce the working process of controlling the four-wire AC switch machine MF to rotate from the left position to the right position, and the working process of controlling the four-wire AC switch machine MF to rotate from the right position to the left position will not be elaborated. Refer to Figure 6 When controlling the four-wire AC switch machine MF to rotate from the left position to the right position, the initial positions of the two switch machines in the four-wire AC switch machine MF are both in the left position, and the current position of the four-wire AC switch machine MF is the left position. When the control module 013 receives the right operation control signal, it can first control the right operation switches in the right operation relay 20 to close, while keeping the left operation switches in the left operation relay 10 in the open state, and then control all the electronic switches in the electronic switch unit 30 to conduct. At this time, the A-phase output terminal of the AC power supply Vac, the second electronic switch S2, the second right switch K22, the second wiring cable XF2 of the four-wire AC switch machine MF, the fourth wiring cable XF4 of the four-wire AC switch machine MF, the fourth right switch K24, and the C-phase output terminal of the AC power supply Vac form a signal transmission path (as shown in red in Figure 6 ), and the N-phase output terminal of the AC power supply Vac, the first electronic switch S1, the first right switch K21, the third wiring cable XF3 of the four-wire AC switch machine MF, the first wiring cable XF1 of the four-wire AC switch machine MF, the third right switch K23, and the B-phase output terminal of the AC power supply Vac form another signal transmission path (as shown in Figure 6shown in blue), so as to drive the four-wire AC switch machine MF to start rotating.

[0106] When the duration for which each electronic switch in the electronic switch unit 30 remains conducting reaches a preset time (for example, 1.5 s), the first electronic switch S1 can be controlled to disconnect. At this time, if there is a cable fault in the four-wire AC switch machine MF, the position of the four-wire AC switch machine MF should still be as Figure 6 shown in the left position. At this time, the path where the first electronic switch S1 is located is open, and the B-phase current signal collected by the second current acquisition unit A2 is zero. Therefore, if after controlling the first electronic switch S1 to disconnect, it is detected that the B-phase current signal continuously remains zero, it is determined that there is a cable fault in the four-wire AC switch machine MF. At this time, the second electronic switch S2 and the third electronic switch S3 can be first controlled to disconnect, and then each right-operating switch in the right-operating relay 20 can be controlled to disconnect.

[0107] If there is no cable fault in the four-wire AC switch machine MF, when the duration for which each electronic switch in the electronic switch unit 30 remains conducting reaches the preset time, the position of the four-wire AC switch machine MF should be as Figure 7 shown in the middle position. Referring to Figure 7 , after controlling the first electronic switch S1 to disconnect, the A-phase output terminal, B-phase output terminal, and C-phase output terminal of the AC power supply Vac output a three-phase power signal to the four-wire AC switch machine MF. In this case, the first current acquisition unit A1, the second current acquisition power supply A2, and the third current acquisition unit A3 can all acquire non-zero current signals. Until the four-wire AC switch machine MF rotates to the Figure 8 shown in the right position, the B-phase output terminal of the AC power supply Vac, the third electronic switch S3, the right-operating third switch K23, the first wiring cable XF1 of the four-wire AC switch machine MF, the fourth wiring cable XF4 of the four-wire AC switch machine MF, the right-operating fourth switch K24, and the C-phase output terminal of the AC power supply Vac form the only signal transmission path. At this time, the A-phase current signal detected by the first current acquisition unit A1 remains zero. Therefore, after controlling the first electronic switch S1, if it is detected that the B-phase current signal continuously remains zero, it is determined that the four-wire AC switch machine MF has rotated to the right position. At this time, the second electronic switch S2 and the third electronic switch S3 can be first controlled to disconnect, and then each right-operating switch in the right-operating relay 20 can be controlled to disconnect.

[0108] Figure 9 and Figure 10 are schematic diagrams of the operation of another drive control module provided by an embodiment of the present invention. Referring to Figure 9 and Figure 10In any of the attached drawings, when the AC switch machine M is a six-wire AC switch machine MS, the second ends of the first left operation switch K11 and the first right operation switch K21 are both floating; the second ends of the second left operation switch K12 and the second right operation switch K22 are both electrically connected to the first wiring cable XS1 of the six-wire AC switch machine MS; the second end of the third left operation switch K13 is electrically connected to the second wiring cable XS2 of the six-wire AC switch machine MS; the second end of the third right operation switch K23 is electrically connected to the fourth wiring cable XS4 of the six-wire AC switch machine MS; the second end of the fourth left operation switch K14 is electrically connected to the fifth wiring cable XS5 of the six-wire AC switch machine MS; the second end of the fourth right operation switch K24 is electrically connected to the third wiring cable XS3 of the six-wire AC switch machine MS.

[0109] Exemplarily, the six-wire AC switch machine MS includes six connection cables and six turnout switches. The six connection cables are respectively the first connection cable XS1, the second connection cable XS2, the third connection cable XS3, the fourth connection cable XS4, the fifth connection cable XS5, and the sixth connection cable XS6. Among the six turnout switches ms1 to ms6, there are a total of twelve left-position contacts d1 to d12 and twelve right-position contacts c1 to c12. The first right-position contact c1 and the seventh left-position contact d7 are electrically connected to the sixth node n6, and the sixth node n6 is electrically connected to the sixth connection cable XS6; the second right-position contact c2 is electrically connected to the ninth right-position contact c9; the third right-position contact c3 is electrically connected to the tenth node n10 and the ninth left-position contact d9; the fourth right-position contact c4 is electrically connected to the second node n2 and the fourth left-position contact d4, and the second node n2 is electrically connected to the second connection cable XS2; the fifth right-position contact c5 is electrically connected to the eleventh left-position contact d11, and the eleventh left-position contact d11 is electrically connected to the W-phase winding through the safety operation switch K0. Wherein, when it is necessary to repair the six-wire AC switch machine MF, the safety operation switch K0 can be controlled to disconnect to ensure that the six-wire AC switch machine MF is in a power-off state to ensure the safety of the operator; the sixth right-position contact c6 is electrically connected to the fifth node n5 and the sixth left-position contact d6, and the fifth node n5 is electrically connected to the fifth connection cable XS5; the first left-position contact d1 is electrically connected to the ninth node n9; the second left-position contact d2 is electrically connected to the tenth node n10 and the eighth right-position contact c8, and the tenth node n10 is also electrically connected to the V-phase winding; the third left-position contact d3 is electrically connected to the eighth left-position contact d8; the fifth left-position contact d5 is electrically connected to the seventh node n7; the seventh right-position contact c7 is electrically connected to the eighth node n8; the tenth right-position contact c10 is electrically connected to the tenth left-position contact d10, and the tenth left-position contact d10 is electrically connected to the third node n3, and the third node n3 is electrically connected to the third connection cable XS3; the twelfth right-position contact c12 is electrically connected to the twelfth left-position contact d12, and the twelfth left-position contact d12 is electrically connected to the fourth node n4, and the fourth node n4 is electrically connected to the fourth connection cable XS4; the first connection cable XS1 is electrically connected to the U-phase winding through the first node n1. The U-phase winding, V-phase winding, and W-phase winding are connected in a star connection.

[0110] The above is the connection method in the six-wire AC switch machine MS. On this basis, when the six-wire AC switch machine MS is in the left position, the left-position contacts in each turnout switch are all conducting and the right-position contacts are all disconnected (as Figure 9 shown); when the six-wire AC switch machine MS is in the right position, the left-position contacts in each turnout switch are all conducting and the right-position contacts are all conducting (as Figure 10As shown. When the six-wire AC switch machine MS is in the middle position, the left-position contacts of the switch points ms1 to ms3 are all conducting, and the right-position contacts are all open, and the left-position contacts of the switch points ms4 to ms6 are all open, and the right-position contacts are all conducting (not shown in the figure); or when the six-wire AC switch machine MS is in the middle position, the left-position contacts of the switch points ms1 to ms3 are all open, and the right-position contacts are all conducting, and the left-position contacts of the switch points ms4 to ms6 are all conducting, and the right-position contacts are all open (not shown in the figure).

[0111] Exemplarily, the processes of controlling the six-wire AC switch machine MS to rotate from the left position to the right position and from the right position to the left position are similar. The working process of controlling the six-wire AC switch machine MS to rotate from the left position to the right position is introduced exemplarily in the embodiments of the present invention, and the working process of controlling the six-wire AC switch machine MS to rotate from the right position to the left position will not be elaborated. Refer to Figure 9 , when controlling the six-wire AC switch machine MS to rotate from the left position to the right position, the initial positions of the six switch points in the six-wire AC switch machine MS are all in the left position, and at this time, the current position of the six-wire AC switch machine MS is the left position. When the control module 013 receives the right-operation control signal, it can first control each right-operation switch in the right-operation relay 20 to close, and keep each left-operation switch in the left-operation relay 10 in the open state, and then control each electronic switch in the electronic switch unit 30 to conduct. At this time, the A-phase output terminal of the AC power supply Vac outputs a power signal to the U-phase winding in the six-wire AC switch machine MS through the second right-operation switch K22 (as Figure 9 shown in green), the B-phase output terminal of the AC power supply Vac outputs a power signal to the W-phase winding in the six-wire AC switch machine MS through the third right-operation switch K23 (as Figure 9 shown in blue), and the C-phase output terminal of the AC power supply Vac outputs a power signal to the V-phase winding in the six-wire AC switch machine MS through the fourth right-operation switch K24 (as Figure 9 shown in red), so as to be able to drive the six-wire AC switch machine MS to start rotating.

[0112] After a preset time (for example, 1.5 s) when all the electronic switches in the electronic switch unit 30 are conducting, the first electronic switch S1 can be controlled to disconnect. Until the six-wire AC switch machine MS rotates to as Figure 10When in the right position as shown, all six switch machine switches in the six-wire AC switch machine MS are in the right position, disconnecting the electrical connection between the AC power supply Vac and the W-phase winding and the V-phase winding, so that a signal transmission path cannot be formed between the AC power supply Vac and the windings of the six-wire AC switch machine MS, and the first current detection unit A1, the second current detection unit A2, and the third current detection unit A3 cannot detect current. Therefore, when the A-phase current, B-phase current, and C-phase current collected by the control module 013 all continuously remain zero, it is determined that the six-wire AC switch machine MS has rotated from the left position to the right position, so that the position of the six-wire AC switch machine MS can be detected by the phase loss condition of each phase current. At this time, the second electronic switch S2 and the third electronic switch S3 can be first controlled to be both disconnected, and then each right-operating switch in the right-operating relay 20 can be controlled to be disconnected.

[0113] In a preferred embodiment, when the AC switch machine M electrically connected to the drive control module is a six-wire AC switch machine MS, since the second ends of the first left-operating switch K11 and the first right-operating switch K12 are both floating, the first electronic switch S1 can be controlled to always remain in the off state, which does not affect the drive control of the six-wire AC switch machine MS. At this time, after the second electronic switch S2 and the third electronic switch S3 are both controlled to be closed, if it is detected that all three-phase currents are phase-lost, it can be determined that the six-wire AC switch machine MS has rotated from the left position to the right position. At this time, the second electronic switch S2 and the third electronic switch S3 can be first controlled to be both disconnected, and then each right-operating switch in the right-operating relay 20 can be controlled to be disconnected, which can simplify the drive control process of the six-wire AC switch machine MS.

[0114] Optionally, referring to Figure 5 as shown, the control module 013 includes a first controller U1 and a second controller U2; the first controller U1 is communicatively connected to the second controller U2, and both the first controller U1 and the second controller U2 are communicatively connected to the upper computer.

[0115] Specifically, the first controller U1 can control the left operating relay 10, the right operating relay 20, and each electronic switch in the first drive control module 011 and the second drive control module 012, and obtain the signals of each current acquisition unit and voltage acquisition unit in the first drive control module 011 and the second drive control module 012. Similarly, the second controller U2 can control the left operating relay 10, the right operating relay 20, and each electronic switch in the first drive control module 011 and the second drive control module 012, and obtain the signals of each current acquisition unit and voltage acquisition unit in the first drive control module 011 and the second drive control module 012. And real-time communication can be carried out between the first controller U1 and the second controller U2. In this way, when one of the first controller U1 and the second controller U2 determines that there is a fault in the drive control module according to the acquired signal, the rotation of the AC switch machine M can be stopped, which can ensure the safe control of the AC switch machine M. In addition, the first controller U1 and the second controller U2 can also be communicatively connected to the host computer. For example, they can communicate with the host computer by using RS485 or Ethernet, and can transmit data such as three-phase voltage signals, three-phase current signals, and fault conditions during the operation of the AC switch machine M to the host computer in real time, so as to facilitate subsequent analysis of the operation control of the AC switch machine M based on relevant data.

[0116] Optionally, Figure 11 is a schematic structural diagram of another drive control circuit of the AC switch machine provided by an embodiment of the present invention. As Figure 11 shown, the drive control circuit 01 further includes: a first indication acquisition module 014 and a second indication acquisition module 015; both the first indication acquisition module 014 and the second indication acquisition module 015 are electrically connected to the control module 013; the control module 013 is further configured to: after obtaining the right operating control signal and before controlling each right operating switch and the electronic switch unit 30 in the right operating relay 20 to conduct in sequence, obtain the indication acquisition signals provided by the first indication acquisition module 014 and the second indication acquisition module 015; when determining that there is no cable fault according to the indication acquisition signals, control each right operating switch and the electronic switch unit 30 in the right operating relay 20 to conduct in sequence; and / or, the control module 013 is further configured to: after obtaining the left operating control signal and before controlling each left operating switch and the electronic switch unit 30 in the left operating relay 10 to conduct in sequence, obtain the indication acquisition signals provided by the first indication acquisition module 40 and the second indication acquisition module 50; when determining that there is no cable fault according to the indication acquisition signals, control each left operating switch and the electronic switch unit 30 in the left operating relay 10 to conduct in sequence.

[0117] Specifically, the first indication acquisition module 014 and the second indication acquisition module 015 can respectively acquire the indication signals of two AC switch machines M. For example, the first indication acquisition module 014 is electrically connected to the first AC switch machine M1 to acquire the indication signal of the first AC switch machine M1, and the second indication acquisition module 015 is electrically connected to the second AC switch machine M2 to acquire the indication signal of the second AC switch machine M2, which can meet the on-site requirements of multiple AC switch machines. The circuit structures of the first indication acquisition module 014 and the second indication acquisition module 015 can be the same, and the initial position of the AC switch machine can be detected by testing. If it is correct, it is determined that the previous driving process has been successfully completed and there is no cable fault in the AC switch machine. If the initial position is detected to be incorrect, it is determined that the previous driving process has not been completed and there is a cable fault in the AC switch machine. When there is no cable fault in the AC switch machine, each relay and the electronic switch unit can be controlled according to the corresponding control signal to drive the AC switch machine, which can improve the safety of the driving control process of the AC switch machine.

[0118] Based on the same inventive concept, an embodiment of the present invention further provides a control device for an AC switch machine. Figure 12 FIG. is a schematic structural diagram of a control device for an AC switch machine provided by an embodiment of the present invention. As Figure 12 shown, the control device 100 for an AC switch machine includes at least two driving control circuits 01 for an AC switch machine provided in any embodiment of the present invention. Therefore, the control device for an AC switch machine provided by an embodiment of the present invention includes the technical features of the driving control circuit for an AC switch machine provided in any embodiment of the present invention, and can achieve the beneficial effects of the driving control circuit for an AC switch machine provided in any embodiment of the present invention. The same parts can refer to the description of the driving control circuit for an AC switch machine provided by an embodiment of the present invention above, and will not be repeated here.

[0119] Specifically, FIG. shows the case where the control device 100 for an AC switch machine includes two driving control circuits 01. The two driving control circuits 01 can be respectively a first driving control circuit 01a and a second driving control circuit 01b. One of the first driving control circuit 01a and the second driving control circuit 01b can be the main driving control circuit, and the other can be the standby driving control circuit. When performing a turnout, the main driving control circuit controls the operation of the AC switch machine M. When the main driving control circuit fails, it is switched to the standby driving control circuit to control the operation of the AC switch machine M. Among them, the control module 013 in the first driving control circuit 01a and the control module 013 in the second driving control circuit 01b can be communicatively connected to realize real-time communication of fault information.

[0120] Optionally, Figure 13 FIG. is a schematic structural diagram of another control device for an AC switch machine provided by an embodiment of the present invention.Figure 14 It is a schematic structural diagram of another control device for an AC switch machine provided by an embodiment of the present invention. With reference to Figures 6 - 10 and Figures 12 - 14 , the control device for the AC switch machine further includes a first switch machine base plate 02, a four-wire AC switch machine terminal board 03, and a six-wire AC switch machine terminal board 04; the first switch machine base plate 02 includes left-operating connection terminals corresponding to each left-operating switch and right-operating connection terminals corresponding to each right-operating switch; each left-operating switch is respectively a first left-operating switch K11, a second left-operating switch K12, a third left-operating switch K13, and a fourth left-operating switch K14; each right-operating switch is respectively a first right-operating switch K21, a second right-operating switch K22, a third right-operating switch K23, and a fourth right-operating switch K24. As shown in Figures 6 - 8 and Figure 13 , each left-operating connection terminal and each right-operating connection terminal are electrically connected to the four-wire AC switch machine MF through the four-wire AC switch machine terminal board 03; or, as shown in Figure 9 and Figure 10 Figure 14 , each left-operating connection terminal and each right-operating connection terminal are electrically connected to the six-wire AC switch machine MS through the six-wire AC switch machine terminal board 04.

[0121] Specifically, with reference to Figure 13 , the four-wire AC switch machine terminal board 03 includes four connection terminals corresponding to the four connection cables of the four-wire AC switch machine MF, which are respectively a first connection terminal QF1 electrically connected to the first connection cable XF1, a second connection terminal QF2 electrically connected to the second connection cable, a third connection terminal QF3 electrically connected to the third connection cable XF3, and a third connection terminal QF4 electrically connected to the fourth connection cable XF4. Since the drive control circuit 01 can drive two AC switch machines M (the first AC switch machine M1 and the second AC switch machine M2) simultaneously through the first drive control module 011 and the second drive control module 012, the four connection terminals can be respectively set to two.

[0122] Exemplarily, for one of the drive control circuits 01, since it includes a first drive control module 011 and a second drive control module 012 for driving two AC switch machines M, the left operation connection terminals corresponding to the left operation switches in the first drive control module 011 and the second drive control module 012 can be respectively set in one-to-one correspondence. In the first drive control module 011 and the second drive control module 012, the end of the first left operation switch K11 electrically connected to the AC switch machine M is the left operation N-phase output terminal LN, the end of the second left operation switch K12 electrically connected to the AC switch machine M is the left operation A-phase output terminal LA, the end of the third left operation switch K13 electrically connected to the AC switch machine M is the left operation B-phase output terminal LB, and the end of the fourth left operation switch K14 electrically connected to the AC switch machine M is the left operation C-phase output terminal LC. Similarly, the end of the first right operation switch K21 electrically connected to the AC switch machine M is the right operation N-phase output terminal RN, the end of the second right operation switch K22 electrically connected to the AC switch machine M is the right operation A-phase output terminal RA, the end of the third right operation switch K23 electrically connected to the AC switch machine M is the right operation B-phase output terminal RB, and the end of the fourth right operation switch K24 electrically connected to the AC switch machine M is the right operation C-phase output terminal RC.

[0123] In the first turnout soleplate 02, each left operation connection terminal includes a left operation N-phase connection terminal LN' electrically connected to the left operation N-phase output terminal LN, a left operation A-phase connection terminal LA' electrically connected to the left operation A-phase output terminal LA, a left operation B-phase connection terminal LB' electrically connected to the left operation B-phase output terminal LB, and a left operation C-phase connection terminal LC' connected to the left operation C-phase output terminal LC. Similarly, each right operation connection terminal includes a right operation N-phase connection terminal RN' electrically connected to the right operation N-phase output terminal RN, a right operation A-phase connection terminal RA' electrically connected to the right operation A-phase output terminal RA, a right operation B-phase connection terminal RB' electrically connected to the right operation B-phase output terminal RB, and a right operation C-phase connection terminal RC' electrically connected to the right operation C-phase output terminal RC. Corresponding to the situation where the first drive control module 011 and the second drive control module 012 drive two AC switch machines M (the first AC switch machine M1 and the second AC switch machine M2) simultaneously, the above-mentioned left operation connection terminals and right operation connection terminals can be respectively set to two.

[0124] Among them, taking the first drive control module 011 driving the first AC switch machine M1 as an example, in the first drive control module 011, the left-operated N-phase connection terminal LN′ and the right-operated N-phase connection terminal RN′ are both connected to the third connection terminal QF3, the left-operated A-phase connection terminal LA′ and the right-operated B-phase connection terminal RB′ are both connected to the first connection terminal QF1, the left-operated B-phase connection terminal LB′ and the right-operated A-phase connection terminal RA′ are both connected to the second connection terminal QF2, and the left-operated C-phase connection terminal LC′ and the right-operated C-phase connection terminal RC′ are both connected to the fourth connection terminal QF4. Thus, the first drive control module 011 can be correspondingly connected to each wiring cable of the first AC switch machine M1 through the first switch machine base plate 02 and the four-wire AC switch machine terminal board 03, and can drive the first AC switch machine M1. Based on the same principle, the second drive control module 012 is correspondingly connected to each wiring cable of the second AC switch machine M2 through the first switch machine base plate 02 and the four-wire AC switch machine terminal board 03, which will not be elaborated here.

[0125] Reference Figure 14 , the six-wire AC switch machine terminal board 04 includes six connection terminals correspondingly arranged for six wiring cables of the six-wire AC switch machine MS, which are respectively the first connection terminal QS1 electrically connected to the first wiring cable XS1, the second connection terminal QS2 electrically connected to the second wiring cable XS2, the third connection terminal QS3 electrically connected to the third wiring cable XS3, the third connection terminal QS4 electrically connected to the fourth wiring cable XS4, the fifth connection terminal QS5 electrically connected to the fifth wiring cable XS5, and the sixth connection terminal QS6 electrically connected to the sixth wiring cable XS6. Since the drive control circuit 01 can drive two AC switch machines M (the first AC switch machine M1 and the second AC switch machine M2) simultaneously through the first drive control module 011 and the second drive control module 012, the six connection terminals can be respectively set to two.

[0126] Exemplarily, when the drive control circuit 01 includes the first indication acquisition module 014 and the second indication acquisition module 015, the first switch machine base plate 02 can also be provided with acquisition connection terminals correspondingly arranged for the acquisition ends of the respective indication acquisition modules. For example, both the first indication acquisition module 014 and the second indication acquisition module 015 include a first acquisition end B1, a second acquisition end B2, a third acquisition end B3, and a fourth acquisition end B4, then the first switch machine base plate 02 includes a first acquisition connection terminal B1′ electrically connected to the first acquisition end B1, a second acquisition connection terminal B2′ electrically connected to the second acquisition end B2, a third acquisition connection terminal B3′ electrically connected to the third acquisition end B3, and a fourth acquisition connection terminal B4′ electrically connected to the fourth acquisition end B4. Reference Figure 13, when the AC switch machine M1 is the four-wire AC switch machine MF, the first acquisition connection terminal B1' can be electrically connected to the third connection terminal QF3 in the four-wire AC turnout terminal board 03, the second acquisition connection terminal B2' is electrically connected to the second connection terminal QF2, the third acquisition connection terminal B3' is electrically connected to the first connection terminal QF1, and the fourth acquisition connection terminal B4' is electrically connected to the fourth connection terminal QF4. The acquisition of the indication signal of the four-wire AC switch machine MF can be realized.

[0127] Among them, taking the first drive control module 011 driving the first AC switch machine M1 as an example, in the first drive control module 011, the left operation N-phase connection terminal LN' and the right operation N-phase connection terminal RN' are both suspended, the left operation A-phase connection terminal LA' and the right operation B-phase connection terminal RB' are both connected to the first connection terminal QS1, the left operation B-phase connection terminal LB' is connected to the second connection terminal QS2, the left operation C-phase connection terminal LC' is connected to the fifth connection terminal QS5, the right operation A-phase connection terminal RA' is connected to the fourth connection terminal QS4, and the right operation C-phase connection terminal RC' is connected to the third connection terminal QS3. Thus, the first drive control module 011 can be correspondingly connected to each wiring cable of the first AC switch machine M1 through the first turnout base plate 02 and the six-wire AC turnout terminal board 04, and the drive of the first AC switch machine M1 can be realized. Based on the same principle, the second drive control module 012 is correspondingly connected to each wiring cable of the second AC switch machine M2 through the first turnout base plate 02 and the six-wire AC turnout terminal board 04 to realize the drive of the second AC switch machine M1, which will not be elaborated here.

[0128] Reference Figure 14 , when the drive control circuit 01 includes the first indication acquisition module 014 and the second indication acquisition module 015, and the AC switch machine M1 is the six-wire AC switch machine MS, the first acquisition connection terminal B1' can be electrically connected to the first connection terminal QS1 in the six-wire AC turnout terminal board 04, the second acquisition connection terminal B2' is electrically connected to the second connection terminal QS2, the third acquisition connection terminal B3' is electrically connected to the sixth connection terminal QS6, and the fourth acquisition connection terminal B4' is electrically connected to the third connection terminal QS3. The acquisition of the indication signal of the six-wire AC switch machine MS can be realized.

[0129] Optionally, Figure 15 is a schematic structural diagram of another control device for an AC switch machine provided by an embodiment of the present invention, Figure 16 is a schematic structural diagram of another control device for an AC switch machine provided by an embodiment of the present invention, with reference to Figure 15 and Figure 16, in the case where the control device of the AC switch machine includes a first drive control circuit 01a and a second drive control circuit 01b to implement a main - standby redundant control system, the terminals in the first switch machine base plate 02, the four - wire AC switch machine terminal board 03, and the six - wire AC switch machine terminal board 04 that are electrically connected to the same AC switch machine M are multiplexed, and can be electrically connected to both the first drive control circuit 01a and the second drive control circuit 01b at the same time.

[0130] Figure 15 Exemplarily, the situation where the first drive control module 011 and the first indication acquisition module 014 in the first drive control circuit 01a, and the first drive control module 011 and the first indication acquisition module 014 in the second drive control circuit 01b are electrically connected to the same four - wire AC switch machine MF is shown. It can be understood that at this time, the second drive control module 012 and the second indication acquisition module 015 in the first drive control circuit 01a and the second drive control module 012 and the second indication acquisition module 015 in the second drive control circuit 01b can be set to be commonly electrically connected to another four - wire AC switch machine MF (not shown in the figure).

[0131] Figure 16 Exemplarily, the situation where the first drive control module 011 and the first indication acquisition module 014 in the first drive control circuit 01a, and the first drive control module 011 and the first indication acquisition module 014 in the second drive control circuit 01b are electrically connected to the same six - wire AC switch machine MS is shown. It can be understood that at this time, the second drive control module 012 and the second indication acquisition module 015 in the first drive control circuit 01a and the second drive control module 012 and the second indication acquisition module 015 in the second drive control circuit 01b can be set to be commonly electrically connected to another six - wire AC switch machine MS (not shown in the figure).

[0132] The above - mentioned specific implementation manners do not constitute a limitation on the protection scope of the present invention. Those skilled in the art should understand that various modifications, combinations, sub - combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drive control circuit for an AC switch machine, characterized in that, Including: A first drive control module, a second drive control module, and a control module; Both the first drive control module and the second drive control module include: a left operation relay, a right operation relay, a first electronic switch, a second electronic switch, and a third electronic switch; The left operation relay includes a first left operation switch, a second left operation switch, a third left operation switch, and a fourth left operation switch; the right operation relay includes a first right operation switch, a second right operation switch, a third right operation switch, and a fourth right operation switch; The first end of the first left operation switch and the first end of the first right operation switch are both electrically connected to the N-phase output terminal of the AC power supply through the first electronic switch, and the second end of the first left operation switch and the second end of the first right operation switch are both electrically connected to the AC switch machine; The first end of the second left operation switch and the first end of the second right operation switch are both electrically connected to the A-phase output terminal of the AC power supply through the second electronic switch, and the second end of the second left operation switch and the second end of the second right operation switch are both electrically connected to the AC switch machine; The first end of the third left operation switch and the first end of the third right operation switch are both electrically connected to the B-phase output terminal of the AC power supply through the third electronic switch, and the second end of the third left operation switch and the second end of the third right operation switch are both electrically connected to the AC switch machine; The first end of the fourth left operation switch and the first end of the fourth right operation switch are both electrically connected to the C-phase output terminal of the AC power supply, and the second end of the fourth left operation switch and the second end of the fourth right operation switch are both electrically connected to the AC switch machine; The coils of the left operation relay and the right operation relay are both electrically connected to the control module, and the first electronic switch, the second electronic switch, and the third electronic switch are also all electrically connected to the control module.

2. The drive control circuit of the AC switch machine according to claim 1, characterized in that, When the AC switch machine is a four-wire AC switch machine, the second ends of the first left operation switch and the first right operation switch are both electrically connected to the third wiring cable of the four-wire AC switch machine; The second end of the second left operation switch is electrically connected to the first wiring cable of the four-wire AC switch machine; the second end of the second right operation switch is electrically connected to the second wiring cable of the four-wire AC switch machine; The second end of the third left operation switch is electrically connected to the second wiring cable of the four-wire AC switch machine; the second end of the third right operation switch is electrically connected to the first wiring cable of the four-wire AC switch machine; The second ends of the fourth left operation switch and the fourth right operation switch are both electrically connected to the fourth wiring cable of the four-wire AC switch machine.

3. The drive control circuit of the AC switch machine according to claim 1, characterized in that, When the AC switch machine is a six-wire AC switch machine, the second ends of the first left operation switch and the first right operation switch are both suspended; The second ends of the second left operation switch and the second right operation switch are both electrically connected to the first wiring cable of the six-wire AC switch machine; The second end of the third left operation switch is electrically connected to the second wiring cable of the six-wire AC switch machine; the second end of the third right operation switch is electrically connected to the fourth wiring cable of the six-wire AC switch machine; The second terminal of the fourth left operation switch is electrically connected to the fifth wiring cable of the six-wire AC switch machine; the second terminal of the fourth right operation switch is electrically connected to the third wiring cable of the six-wire AC switch machine.

4. The drive control circuit of the AC switch machine according to claim 1, wherein Both the first drive control module and the second drive control module further include: a safety cut-off relay; The safety cut-off relay includes a first safety switch, a second safety switch, a third safety switch, and a fourth safety switch; The first safety switch is electrically connected between the first electronic switch and the N-phase output terminal of the AC power supply; The second safety switch is electrically connected between the second electronic switch and the A-phase output terminal of the AC power supply; The third safety switch is electrically connected between the third electronic switch and the B-phase output terminal of the AC power supply; The first terminal of the fourth safety switch is electrically connected to the first terminals of the fourth left operation switch and the fourth right operation switch, and the second terminal of the fourth safety switch is electrically connected to the C-phase output terminal of the AC power supply; The coil of the safety cut-off relay is electrically connected to the control module.

5. The drive control circuit of the AC switch machine according to claim 1, characterized in that Both the first drive control module and the second drive control module further include: a first voltage acquisition unit, a second voltage acquisition unit, and a third voltage acquisition unit; The first voltage acquisition unit is electrically connected between the N-phase output terminal and the A-phase output terminal of the AC power supply; The second voltage acquisition unit is electrically connected between the N-phase output terminal and the B-phase output terminal of the AC power supply; The third voltage acquisition unit is electrically connected between the N-phase output terminal and the C-phase output terminal of the AC power supply; The first voltage acquisition unit, the second voltage acquisition unit, and the third voltage acquisition unit are also all electrically connected to the control module.

6. The drive control circuit of the AC switch machine according to claim 1, wherein Both the first drive control module and the second drive control module further include: a first current acquisition unit, a second current acquisition unit, and a third current acquisition unit; The first current acquisition unit is electrically connected between the A-phase output terminal of the AC power supply and the second electronic switch; The second current acquisition unit is electrically connected between the B-phase output terminal of the AC power supply and the third electronic switch; The first terminal of the third current acquisition unit is electrically connected to the C-phase output terminal of the AC power supply, and the second terminal of the third current acquisition unit is electrically connected to the first terminals of the fourth left operation switch and the fourth right operation switch; The first current acquisition unit, the second current acquisition unit, and the third current acquisition unit are also all electrically connected to the control module.

7. The drive control circuit of the AC switch machine according to claim 1, characterized in that, The control module includes a first controller and a second controller; The first controller is communicatively connected to the second controller, and both the first controller and the second controller are communicatively connected to the upper computer.

8. The drive control circuit of the AC switch machine according to claim 1, wherein the control module is configured to: When the right operation control signal is obtained, control each right operation switch in the right operation relay and the electronic switch unit to conduct in sequence; or, when the left operation control signal is obtained, control each left operation switch in the left operation relay and the electronic switch unit to conduct in sequence; where Each of the right operation switches is the first right operation switch, the second right operation switch, the third right operation switch, and the fourth right operation switch; each of the left operation switches is the first left operation switch, the second left operation switch, the third left operation switch, and the fourth left operation switch; the electronic switch unit includes the first electronic switch, the second electronic switch, and the third electronic switch; When the position of the AC switch machine is in the middle position, control the first electronic switch to open; When it is determined that there is a phase loss in the three-phase current supplied to the AC switch machine, control the second electronic switch and the third electronic switch to open; After controlling the second electronic switch and the third electronic switch to open, control the left operation relay and the right operation relay to open.

9. The drive control circuit of the AC switch machine according to claim 1, characterized in that, It further includes: The first indication acquisition module and the second indication acquisition module; Both the first indication acquisition module and the second indication acquisition module are electrically connected to the control module; The control module is further configured to: after obtaining the right operation control signal, and before controlling the right operation switches in the right operation relay and the electronic switch unit to conduct in sequence, obtain the indication acquisition signals provided by the first indication acquisition module and the second indication acquisition module; when it is determined that there is no cable fault according to the indication acquisition signals, control the right operation switches in the right operation relay and the electronic switch unit to conduct in sequence; And / or, the control module is further configured to: after obtaining the left operation control signal, before controlling the left operation switches in the left operation relay and the electronic switch unit to conduct in sequence, obtain the indication acquisition signals provided by the first indication acquisition module and the second indication acquisition module; when it is determined that there is no cable fault according to the indication acquisition signals, control the left operation switches in the left operation relay and the electronic switch unit to conduct in sequence.

10. A control device for an AC switch machine, characterized in that, It includes: The drive control circuit of the AC switch machine according to any one of claims 1 to 9, with at least two.

11. The control device of the AC switch machine according to claim 10, characterized in that It further includes: The first switch machine base plate, the four-wire AC switch machine terminal board, and the six-wire AC switch machine terminal board; The first switch machine base plate includes left operation connection terminals corresponding to each of the left operation switches and right operation connection terminals corresponding to each of the right operation switches; each of the left operation switches is the first left operation switch, the second left operation switch, the third left operation switch, and the fourth left operation switch; each of the right operation switches is the first right operation switch, the second right operation switch, the third right operation switch, and the fourth right operation switch; Each of the left operation connection terminals and each of the right operation connection terminals are electrically connected to the four-wire AC switch machine through the four-wire AC switch machine terminal board; Alternatively, each of the left operation connection terminals and each of the right operation connection terminals are electrically connected to the six-wire AC switch machine through the six-wire AC switch machine terminal board.

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