Electric locomotive bogie rectification and voltage regulation control device and electric locomotive test method

Abstract

The invention discloses an electric locomotive bogie rectification and voltage regulation control device and an electric locomotive test method. The device comprises an acquisition module, a control module and an output module, the acquisition module is used for acquiring a phase-shift trigger pulse signal sent by the electronic control cabinet and sending the phase-shift trigger pulse signal to the control module, and the phase-shift trigger pulse signal is used for triggering a corresponding thyristor to be conducted so as to supply power to a corresponding motor; the control module comprises a switch assembly, and the switch assembly is used for controlling the on-off of phase-shift trigger pulse signals for triggering the conduction of the thyristors, and carrying out AC positive and negative half-wave conduction and disconnection control on the three sections of bridges in each group of three-section bridge AC rectification circuits. According to the invention, segmentation of the three-section bridge AC rectification circuit and control of AC positive and negative half waves can be realized, and correct line, thyristor performance and electronic pulse control of each section of bridge in the three sections of bridges can be ensured.

Description

Technical Field

[0001] The present invention relates to the field of railway electric locomotive maintenance, and more specifically, to an electric locomotive bogie rectification and voltage regulation control device and an electric locomotive test method. Background Art

[0002] The SS4 electric locomotive is an eight-axle heavy-duty freight locomotive, consisting of two identical four-axle locomotives connected by a coupler and a windshield. The SS4 electric locomotive adopts the "independent bogie power supply" method. There are two sections and four bogies, each of which has two motors connected in parallel and powered by a set of main rectifiers. The two sections have a total of four independent rectifier and voltage regulation circuits.

[0003] The rectifier and voltage regulation circuit (three-stage bridge AC rectifier circuit) adopts advanced high-power thyristor multi-stage bridge phase-controlled rectification method to perform stepless and smooth speed regulation control on the locomotive, and controls the traction and braking performance of the locomotive through unequal three-stage rectification phase-controlled voltage regulation. The conduction of the thyristor in the rectifier and voltage regulation circuit needs to be realized through the phase-shift trigger pulse of the electronic control cabinet and the phase change of the pulse.

[0004] When the locomotive is undergoing high-voltage performance tests and EMU tests after maintenance, there are often problems such as thyristor failure, line failure, and electronic control cabinet trigger pulse failure, which affect the traction and braking performance of the locomotive. For such failures, there are many electrical components involved, which are difficult to distinguish and judge. Therefore, it is particularly necessary to design a device that can judge the working status of the thyristor, the correctness of the line, and the electronic pulse signal control to solve such problems. Summary of the invention

[0005] The purpose of the present invention is to propose an electric locomotive bogie rectifier voltage regulation control device and an electric locomotive test method, so as to realize segmentation of a three-section bridge AC rectifier circuit and control of the AC positive and negative half-waves, and ensure that the circuit, thyristor performance and electronic pulse control of each section of the three-section bridge are correct.

[0006] To achieve the above object, the present invention proposes a rectifier and voltage regulating control device for an electric locomotive bogie, wherein the electric locomotive comprises two four-axle locomotives, each of which comprises two bogies, each of which comprises two parallel motors and a set of three-bridge AC rectifier circuits for controlling the power supply to the motors, each set of three-bridge AC rectifier circuits comprises six thyristors, and each bridge is triggered and turned on by two thyristors;

[0007] The device comprises: a collection module, a control module and an output module;

[0008] One end of the acquisition module is connected to the external interface of the electronic control cabinet of the locomotive, the other end of the acquisition module is connected to one end of the control module, the other end of the control module is connected to one end of the output module, and the other end of the output module is connected to the control circuits of 12 thyristors of two groups of three-stage bridge AC rectifier circuits of two bogies of the same four-axle locomotive;

[0009] The acquisition module is used to acquire the phase-shift trigger pulse signal emitted by the electronic control cabinet, and send the phase-shift trigger pulse signal to the control module, and the phase-shift trigger pulse signal is used to trigger the corresponding thyristor to turn on to power the corresponding motor;

[0010] The control module includes a switch component, which is used to control the on and off of the phase-shift trigger pulse signal that triggers each thyristor to turn on, and to control the AC positive and negative half-wave conduction and disconnection of the three bridges in each group of three-bridge AC rectifier circuits, so as to check and confirm the circuit of each bridge in the three-bridge AC rectifier circuit, the performance of the thyristor and the electronic pulse control during the electric locomotive test.

[0011] Optionally, the switch assembly includes two switch groups, each switch group includes three universal switches;

[0012] The two switch groups are used to control the three-stage bridge AC rectifier circuits of the two bogies respectively;

[0013] The three 10,000-turn switches in each switch group are a one-stage bridge 10,000-turn switch, a two-stage bridge 10,000-turn switch and a three-stage bridge 10,000-turn switch, which are used to control the on and off of two thyristors of one stage bridge, two thyristors of the second stage bridge and two thyristors of the third stage bridge in the three-stage bridge AC rectifier circuit.

[0014] Optionally, the gear positions of each of the 10,000-turn switches include:

[0015] 0 position: disconnect;

[0016] 1 bit: positive half-wave conduction;

[0017] 2-bit: negative half-wave conduction;

[0018] 3-bit: Positive half-wave and negative half-wave are turned on at the same time.

[0019] Optionally, one end of the acquisition module is connected to an external interface of the electronic control cabinet through an electrical connector.

[0020] Optionally, the other end of the acquisition module is communicatively connected to one end of the control module via a CAN bus, and the other end of the control module is communicatively connected to one end of the output module via a CAN bus.

[0021] Optionally, the other end of the output module is connected to a control circuit of each thyristor of the three-stage bridge AC rectifier circuit.

[0022] Optionally, the device further comprises a shell, and the acquisition module, the control module and the output module are integrated in the shell.

[0023] Optionally, the knobs of the six universal switches of the two switch groups are arranged on the same side outside the shell, and the multiple gears of the universal switch are arranged on the shell surface around the knobs.

[0024] Optionally, the output module includes an output interface, the output interface is arranged at one end of the shell, and the electrical connector is arranged at the other end of the shell.

[0025] The present invention also provides an electric locomotive test method, using the above-mentioned electric locomotive bogie rectification and voltage regulation control device, the method comprising:

[0026] The acquisition module is connected to the external interface of the electronic control cabinet to acquire the phase-shift trigger pulse signal issued by the electronic control cabinet, and the output module is connected to each thyristor control circuit of the three-stage bridge AC rectifier circuit of the two bogies of the locomotive, so that each control signal can be accurately output to the thyristor; wherein the electronic control cabinet is also used to acquire the voltage of the motor of the bogie and send it to the operating table of the locomotive driver's cab to display the voltage value of the motor;

[0027] Conduct high voltage performance and motor vehicle tests on electric locomotives. During the test:

[0028] The on and off of the 12 thyristor trigger pulse signals on the two bogies are controlled by the switch assembly on the control module, and the voltage value of each motor after the 10,000-turn switch is selected and controlled is compared with the standard motor voltage value to determine the correctness of the thyristor, circuit, and electronic pulse triggering;

[0029] In addition, the triggering of the thyristor is controlled by selecting the gear position of the 10,000-turn switch, and the motor voltage values ​​of the thyristors on the two bogies are compared horizontally to further determine the correctness of the thyristor, circuit, and electronic pulse triggering.

[0030] The beneficial effects of the present invention are:

[0031] (1) When the SS4 electric locomotive is subjected to high voltage test and motor vehicle test, the rectification and voltage regulation control device of the present invention can arbitrarily control the three-stage bridge AC rectification circuit and comprehensively detect the correctness of the locomotive AC rectification circuit and the electronic pulse control circuit.

[0032] (2) By using the rectifier and voltage regulating control device, problems can be discovered in advance, and a quick judgment can be made on the locomotive's thyristor fault, line fault, and electronic pulse trigger control fault; it can effectively solve the problem of difficulty and time in finding faults; it can improve the pass rate of vehicle trial operation and reduce the maintenance cycle and maintenance cost.

[0033] The system of the present invention has other characteristics and advantages, which will be apparent from the drawings incorporated herein and the following detailed description, or will be described in detail in the drawings incorporated herein and the following detailed description, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, in which like reference numerals generally represent like components.

[0035] Figure 1 The schematic diagram of a rectification and voltage regulation control device for an electric locomotive bogie according to an embodiment of the present invention is shown.

[0036] Figure 2 The physical structure diagram of a rectification and voltage regulation control device for an electric locomotive bogie according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0037] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment provides an electric locomotive bogie rectification and voltage regulation control device 1. The electric locomotive in this embodiment is an SS4 electric locomotive, including two connected four-axle locomotives, each four-axle locomotive includes two bogies, each bogie includes two parallel motors and a group of three-stage bridge AC rectification circuits 5 for controlling the power supply to the motors, each group of three-stage bridge AC rectification circuits 5 includes 6 thyristors, and each bridge is triggered and turned on by two thyristors;

[0040] The device comprises: a collection module 2, a control module 3 and an output module 4;

[0041] One end of the acquisition module 2 is connected to the external interface of the electronic control cabinet 6 of the locomotive, the other end of the acquisition module 2 is connected to one end of the control module 3, the other end of the control module 3 is connected to one end of the output module 4, and the other end of the output module 4 is connected to the control circuits of 12 thyristors of two groups of three-stage bridge AC rectifier circuits 5 of two bogies of the same four-axle locomotive;

[0042] The acquisition module 2 is used to acquire the phase-shift trigger pulse signal emitted by the electronic control cabinet 6, and send the phase-shift trigger pulse signal to the control module 3, and the phase-shift trigger pulse signal is used to trigger the corresponding thyristor to turn on to power the corresponding motor;

[0043] The control module 3 includes a switch component, which is used to control the on and off of the phase-shift trigger pulse signal that triggers each thyristor to turn on, and to control the AC positive and negative half-wave conduction and disconnection of the three bridges in each group of three-bridge AC rectifier circuits 5, so as to check and confirm the circuit of each bridge in the three-bridge AC rectifier circuit 5, the performance of the thyristor and the electronic pulse control during the electric locomotive test.

[0044] In this embodiment, the switch assembly includes two switch groups, each of which includes three universal switches (including knobs and corresponding switch circuits, which are existing);

[0045] The two switch groups are used to control the three-stage bridge AC rectifier circuits 5 of the two bogies respectively;

[0046] The three 10,000-turn switches in each switch group are a one-stage bridge 10, a two-stage bridge 10, and a three-stage bridge 10, which are used to control the on and off of two thyristors of the one-stage bridge, two thyristors of the two-stage bridge, and two thyristors of the three-stage bridge in the three-stage bridge AC rectifier circuit 5.

[0047] Wherein, the gear positions of each of the ten-thousand-turn switches include:

[0048] 0 position: disconnect;

[0049] 1 bit: positive half-wave conduction;

[0050] 2-bit: negative half-wave conduction;

[0051] 3-bit: Positive half-wave and negative half-wave are turned on at the same time.

[0052] like Figure 1As shown, in this embodiment, one end of the acquisition module 2 is connected to the external interface of the electronic control cabinet 6 through the electrical connector 11. The other end of the acquisition module 2 is connected to one end of the control module 3 through the CAN bus, and the other end of the control module 3 is connected to one end of the output module 4 through the CAN bus. The other end of the output module 4 is connected to the control circuit of each thyristor of the three-stage bridge AC rectifier circuit 5.

[0053] like Figure 2 As shown, the device in this embodiment further includes a housing 13, and the acquisition module 2, the control module 3 and the output module 4 are integrated in the housing 13. The knobs of the six universal switches of the two switch groups are arranged on the same side outside the housing 13, and the multiple gears of the universal switches are arranged on the surface of the housing 13 around the knobs. The output module 4 includes an output interface 12, which is arranged at one end of the housing 13, and the electrical connector 11 is arranged at the other end of the housing 13.

[0054] Specifically, the acquisition module 2 in the present device is connected to the external interface of the electronic control cabinet 7 through an electrical connector to collect the phase-shift trigger pulse signal emitted by the electronic control cabinet. The other end is connected to the control module through the CAN bus for communication, and the collected phase-shift trigger pulse signal of the electronic control cabinet is sent to the control module; the control module 3 is connected to the CAN communication bus, and transmits the signal after thyristor control to the output module through the CAN communication bus; one end of the output module 4 is connected to the CAN communication bus of the control module, and the other end is connected to each thyristor control circuit of the rectifier and voltage regulator, to ensure that each control signal can be accurately output to the thyristor.

[0055] The control module 3 is specifically used for: (1) controlling the on and off of the trigger pulse signal of 12 thyristors of two bogies (6 thyristors of one bogie) according to the degree of thyristor opening of the locomotive three-stage bridge AC rectifier circuit under the input AC positive and negative half-wave conditions, so that each bridge section is triggered and turned on by two thyristors (one thyristor is turned on in the AC positive half-wave and the other is turned on in the AC negative half-wave); (2) by controlling the thyristor triggering, the locomotive three-stage bridge AC rectifier circuit can be divided into: one bridge section positive half-wave and negative half-wave; two bridge sections positive half-wave and negative half-wave; three bridge sections positive half-wave and negative half-wave. Three 10,000-turn switches are set on each of the bogies I and II to control the first, second and third sections of the bridge respectively. The gear position is selected through the 10,000-turn switch (position 0: disconnected; position 1: positive half-wave on; position 2: negative half-wave on; position 3: positive half-wave and negative half-wave on at the same time). The voltage value of each motor after the 10,000-turn switch is selected and controlled (displayed by the voltmeter on the operating table in the locomotive driver's cab) is compared with the standard motor voltage value to determine the correctness of the thyristor, circuit and electronic pulse triggering; (3) According to the principle that the thyristor control of the two bogies I and II of the locomotive is completely the same, the motor voltage value of the thyristor-conducted motor of the two bogies I and II (displayed by the voltmeter on the operating table in the locomotive driver's cab) can be horizontally compared through the 10,000-turn switch to control the thyristor triggering, so as to further determine the correctness of the thyristor, circuit and electronic pulse triggering.

[0056] Example 2

[0057] This embodiment provides an electric locomotive test method, using the electric locomotive bogie rectification and voltage regulation control device 1 described in the above embodiment 1, the method comprising:

[0058] The acquisition module 2 is connected to the external interface of the electronic control cabinet 6 to acquire the phase-shift trigger pulse signal issued by the electronic control cabinet 6, and the output module 4 is connected to each thyristor control circuit of the three-stage bridge AC rectifier circuit 5 of the two bogies of the locomotive, so that each control signal can be accurately output to the thyristor; wherein the electronic control cabinet 6 is also used to acquire the voltage of the motor of the bogie and send it to the operating console 7 of the locomotive cab to display the voltage value of the motor;

[0059] Conduct high voltage performance and motor vehicle tests on electric locomotives. During the test:

[0060] The switch assembly on the control module 3 is used to control the on and off of the 12 thyristor trigger pulse signals on the two bogies. By selecting the gear position of the 10,000-turn switch, the voltage value of each motor after the 10,000-turn switch is selected and controlled is compared with the standard motor voltage value to determine the correctness of the thyristor, circuit, and electronic pulse triggering;

[0061] In addition, the triggering of the thyristor is controlled by selecting the gear position of the 10,000-turn switch, and the motor voltage values ​​of the thyristors on the two bogies are compared horizontally to further determine the correctness of the thyristor, circuit, and electronic pulse triggering.

[0062] For the high-voltage performance and EMU test of SS4 electric locomotive, two of the above-mentioned electric locomotive bogie rectification and voltage regulation control devices 1 are used to perform rectification and voltage regulation control on the four bogies of two four-axle locomotives respectively, so that the three-section bridge AC rectification circuit 5 can be segmented and the AC positive and negative half-waves can be controlled during the test, thereby ensuring that the circuit, thyristor performance and electronic pulse control of each section of the three-section bridge are correct.

[0063] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A rectifier and voltage regulating control device for an electric locomotive bogie, the electric locomotive comprising two four-axle locomotives, each four-axle locomotive comprising two bogies, each bogie comprising two parallel motors and a set of three-bridge AC rectifier circuits for controlling the power supply to the motors, each set of three-bridge AC rectifier circuits comprising six thyristors, and each bridge section being triggered and turned on by two thyristors; It is characterized in that The device comprises: a collection module, a control module and an output module; One end of the acquisition module is connected to the external interface of the electronic control cabinet of the locomotive, the other end of the acquisition module is connected to one end of the control module, the other end of the control module is connected to one end of the output module, and the other end of the output module is connected to the control circuits of 12 thyristors of two groups of three-stage bridge AC rectifier circuits of two bogies of the same four-axle locomotive; The acquisition module is used to acquire the phase-shift trigger pulse signal emitted by the electronic control cabinet, and send the phase-shift trigger pulse signal to the control module, and the phase-shift trigger pulse signal is used to trigger the corresponding thyristor to turn on to power the corresponding motor; The control module includes a switch component, which is used to control the on and off of the phase-shift trigger pulse signal that triggers each thyristor to turn on, and to control the AC positive and negative half-wave conduction and disconnection of the three bridges in each group of three-bridge AC rectifier circuits, so as to check and confirm the circuit of each bridge in the three-bridge AC rectifier circuit, the performance of the thyristor and the electronic pulse control during the electric locomotive test.

2. The electric locomotive bogie rectification and voltage regulation control device according to claim 1, characterized in that: The switch assembly includes two switch groups, each switch group includes three 10,000-turn switches; The two switch groups are used to control the three-stage bridge AC rectifier circuits of the two bogies respectively; The three 10,000-turn switches in each switch group are a one-stage bridge 10,000-turn switch, a two-stage bridge 10,000-turn switch and a three-stage bridge 10,000-turn switch, which are used to control the on and off of two thyristors of one stage bridge, two thyristors of the second stage bridge and two thyristors of the third stage bridge in the three-stage bridge AC rectifier circuit.

3. The electric locomotive bogie rectification and voltage regulation control device according to claim 2, characterized in that: The gear positions of each of the ten-thousand-turn switches include: 0 position: disconnect; 1 bit: positive half-wave conduction; 2-bit: negative half-wave conduction; 3-bit: Positive half-wave and negative half-wave are turned on at the same time.

4. The electric locomotive bogie rectification and voltage regulation control device according to claim 3, characterized in that: One end of the acquisition module is connected to the external interface of the electronic control cabinet through an electrical connector.

5. The electric locomotive bogie rectification and voltage regulation control device according to claim 4, characterized in that: The other end of the acquisition module is communicatively connected to one end of the control module via a CAN bus, and the other end of the control module is communicatively connected to one end of the output module via a CAN bus.

6. The electric locomotive bogie rectification and voltage regulation control device according to claim 5, characterized in that: The other end of the output module is connected to the control circuit of each thyristor of the three-stage bridge AC rectifier circuit.

7. The electric locomotive bogie rectification and voltage regulation control device according to claim 6, characterized in that: The device also includes a shell, and the acquisition module, the control module and the output module are integrated in the shell.

8. The electric locomotive bogie rectification and voltage regulation control device according to claim 7, characterized in that: The knobs of the six universal switches of the two switch groups are arranged on the same side outside the shell, and the multiple gears of the universal switch are arranged on the shell surface around the knobs.

9. The electric locomotive bogie rectification and voltage regulation control device according to claim 8, characterized in that: The output module comprises an output interface, wherein the output interface is arranged at one end of the shell, and the electrical connector is arranged at the other end of the shell.

10. An electric locomotive testing method, using the electric locomotive bogie rectification and voltage regulation control device according to any one of claims 1 to 9, characterized in that: The method comprises: The acquisition module is connected to the external interface of the electronic control cabinet to acquire the phase-shift trigger pulse signal issued by the electronic control cabinet, and the output module is connected to each thyristor control circuit of the three-stage bridge AC rectifier circuit of the two bogies of the locomotive, so that each control signal can be accurately output to the thyristor; wherein the electronic control cabinet is also used to acquire the voltage of the motor of the bogie and send it to the operating table of the locomotive driver's cab to display the voltage value of the motor; Conduct high voltage performance and motor vehicle tests on electric locomotives. During the test: The on and off of the 12 thyristor trigger pulse signals on the two bogies are controlled by the switch assembly on the control module, and the voltage value of each motor after the 10,000-turn switch is selected and controlled is compared with the standard motor voltage value to determine the correctness of the thyristor, circuit, and electronic pulse triggering; In addition, the triggering of the thyristor is controlled by selecting the gear position of the 10,000-turn switch, and the motor voltage values ​​of the thyristors on the two bogies are compared horizontally to further determine the correctness of the thyristor, circuit, and electronic pulse triggering.

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