Linear driving traction system testing device and method

Abstract

The invention provides a linear driving traction system testing device. The linear driving traction system testing device comprises a plurality of motor stator section assemblies; each motor stator section assembly comprises two motor stators, an electronic switch cabinet and two switching cabinets; the two motor stators comprise the first motor stator and the second motor stator, the two switching cabinets comprise the first switching cabinet and the second switching cabinet, the first switching cabinet and the second switching cabinet are each provided with two wiring sets, one wiring set on the first switching cabinet is electrically connected with the first end of the first motor stator, and the other wiring set on the second switching cabinet is electrically connected with the second end of the second motor stator. The other wiring group on the first switching cabinet is electrically connected with the first end of the second motor stator, one wiring group on the second switching cabinet is electrically connected with the second end of the first motor stator, and the other wiring group on the second switching cabinet is electrically connected with the second end of the second motor stator; the electronic switch cabinet is electrically connected with the first motor stator and the second motor stator. By using the first switching cabinet and the second switching cabinet for wiring, the connection mode of each motor stator and the switch can be rapidly changed.

Description

Technical Field

[0001] This invention relates to the technical field of linear drive, and in particular to a testing device and method for a linear drive traction system. Background Technology

[0002] Electromagnetic launch technology is a launch technology that uses electrical energy as a power source and electromagnetic force to accelerate a payload to a maximum speed over a certain distance. In linear motor electromagnetic launch technology, due to the system's pursuit of high speed and large mass, linear motors are usually combined with magnetic levitation technology to perform contactless electromagnetic launch. This can break through the speed and energy limits of traditional launch methods and is an inevitable path for future launch methods.

[0003] Currently, the experimental devices used for verification and research related to electromagnetic launch technology can only be used for research on a certain system scheme. If the system scheme is changed, a new corresponding test bench needs to be built. Summary of the Invention

[0004] Therefore, it is necessary to provide a testing device and method for a linear drive traction system to address the aforementioned technical problems.

[0005] A testing device for a linear drive traction system includes: several motor stator segment assemblies;

[0006] Each of the motor stator segment assemblies includes two motor stators, an electronic switch cabinet, and two transfer cabinets;

[0007] The two motor stators include a first motor stator and a second motor stator, and the two adapter cabinets include a first adapter cabinet and a second adapter cabinet. Each of the first adapter cabinet and the second adapter cabinet has two wiring groups. One wiring group on the first adapter cabinet is electrically connected to a first end of the first motor stator, and the other wiring group on the first adapter cabinet is electrically connected to a first end of the second motor stator. One wiring group on the second adapter cabinet is electrically connected to a second end of the first motor stator, and the other wiring group on the second adapter cabinet is electrically connected to a second end of the second motor stator.

[0008] The electronic switch cabinet is electrically connected to the first motor stator and the second motor stator respectively, and the electronic switch cabinet is used to control the first motor stator and the second motor stator to be energized or de-energized.

[0009] Each of the first motor stators and each of the second motor stators in each of the motor stator segment assemblies are electrically connected through each of the first transfer cabinets and each of the second transfer cabinets.

[0010] In one embodiment, each wiring group includes three copper busbars, and both the first motor stator and the second motor stator are three-phase motor stators; the three copper busbars of one wiring group in the first transfer cabinet are electrically connected to the three-phase terminals of the first end of the first motor stator, the three copper busbars of another wiring group in the first transfer cabinet are electrically connected to the three-phase terminals of the first end of the second motor stator, the three copper busbars of one wiring group in the second transfer cabinet are electrically connected to the three-phase terminals of the second end of the first motor stator, and the three copper busbars of another wiring group in the second transfer cabinet are electrically connected to the three-phase terminals of the second end of the second motor stator.

[0011] In one embodiment, each of the copper busbars has at least five wiring holes.

[0012] In one embodiment, the motor stator segment assemblies are arranged at equal intervals.

[0013] In one embodiment, the electronic switch cabinet includes two switches, each of which is electrically connected to one of the motor stators.

[0014] A testing method for a linear drive traction system testing device, implemented based on the linear drive traction system testing device described in any of the above embodiments, the method comprising:

[0015] According to any one of the system topologies of parallel mode, open winding mode, leapfrog mode and series mode, each of the first transfer cabinets and each of the second transfer cabinets in each of the motor stator segment assemblies are electrically connected.

[0016] The linear drive traction system test device is tested by controlling the electronic switch cabinets in each of the motor stator segment assemblies.

[0017] In one embodiment, in the parallel mode,

[0018] The first and second motor stators of the motor stator segments with odd serial numbers in each of the motor stator segments are electrically connected to the power lines led out from the converter through the first transfer cabinet.

[0019] The first and second motor stators of the odd-numbered motor stator segment assemblies are connected to the first transfer cabinet of the even-numbered motor stator segment assemblies via the second transfer cabinet of the odd-numbered motor stator segment assemblies, so that the first and second motor stators of the odd-numbered motor stator segment assemblies are respectively connected in parallel with the first and second motor stators of the even-numbered motor stator segment assemblies.

[0020] The first and second motor stators of the even-numbered motor stator segment assemblies are star-connected through the second transfer cabinet of the even-numbered motor stator segment assemblies.

[0021] In one embodiment, in the open winding mode,

[0022] The adjacent motor stator segment assemblies are combined in pairs to form an open winding group, the open winding group including a first motor stator segment assembly and a second motor stator segment assembly;

[0023] The first motor stator and the second motor stator in the first motor stator segment assembly within the open winding are connected in series through the first transfer cabinet and the second transfer cabinet of the first motor stator segment assembly.

[0024] The first motor stator and the second motor stator in the second motor stator segment assembly within the open winding are connected in series through the first transfer cabinet and the second transfer cabinet of the second motor stator segment assembly.

[0025] The two first motor stators and two second motor stators in the two sets of motor stator segment assemblies in each of the open winding groups are connected in series;

[0026] The two first motor stators and two second motor stators in each of the open windings are connected in parallel on the power lines led out of the converter.

[0027] In one embodiment, in the frog-jumping mode,

[0028] The first end of the first motor stator in each motor stator segment assembly is connected to the power line led out from the converter through the first adapter cabinet.

[0029] The second end of the first motor stator is connected through the first and second transfer cabinets to realize the series connection of the second end of the first motor stator and the first end of the second motor stator.

[0030] The second end of the second motor stator is star-connected through the second adapter cabinet.

[0031] In one embodiment, in the serial mode:

[0032] Each first motor stator in each motor stator segment assembly is connected in series via a first transfer cabinet and a second transfer cabinet; the first motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line led out from the converter via the first transfer cabinet, and the first motor stator of the motor stator segment assembly that is last in the sequence is star-connected via the second transfer cabinet.

[0033] Each second motor stator in each motor stator segment assembly is connected in series through a first transfer cabinet and a second transfer cabinet. The second motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line led out from the converter through the first transfer cabinet. The second motor stator of the motor stator segment assembly that is last in the sequence is star-connected through the second transfer cabinet.

[0034] One switch in the electronic switch cabinet within each motor stator segment assembly is connected in parallel at both ends of the first motor stator via a first transfer cabinet and a second transfer cabinet; the other switch in the electronic switch cabinet is connected in parallel at both ends of the second motor stator via a first transfer cabinet and a second transfer cabinet.

[0035] The linear drive traction system testing device provided by this invention electrically connects a first transfer cabinet and a second transfer cabinet at both ends of the first motor stator, and electrically connects a first transfer cabinet and a second transfer cabinet at both ends of the second motor stator. By connecting wires to the first transfer cabinet and the second transfer cabinet, the connection method of the first motor stator, the second motor stator, and the switch in each motor stator segment assembly is changed, thereby realizing the conversion of multiple main circuits. By studying various key technologies of linear drive through multiple main circuits, the research and development cost can be significantly reduced and the research and development cycle can be shortened. Attached Figure Description

[0036] Figure 1 This is a schematic diagram showing the relationship between the subsystems of the linear drive traction system test device in one embodiment.

[0037] Figure 2 This is a three-dimensional structural diagram of the test device for a linear drive traction system in one embodiment, along the track direction.

[0038] Figure 3 This is a schematic cross-sectional view of the test device for a linear drive traction system in one embodiment along the track direction.

[0039] Figure 4 This is a schematic diagram of the structure of a motor stator segment assembly in one embodiment;

[0040] Figure 5 This is a schematic diagram of the internal structure of the transfer cabinet in one embodiment;

[0041] Figure 6 This is a schematic diagram of the circuit structure in parallel mode in one embodiment;

[0042] Figure 7 This is a schematic diagram of the circuit structure in an open-winding mode according to one embodiment;

[0043] Figure 8 This is a schematic diagram of the circuit structure for the frog-jumping mode in one embodiment;

[0044] Figure 9 This is a schematic diagram of the circuit structure in a series mode in one embodiment;

[0045] Figure 10 This is a schematic diagram of the first step circuit control in the parallel mode of one embodiment;

[0046] Figure 11 This is a schematic diagram of the second-step circuit control in the parallel mode of one embodiment;

[0047] Figure 12 This is a schematic diagram of the third step circuit control in the parallel mode of one embodiment;

[0048] Figure 13 This is a schematic diagram of the first step circuit control for a two-stage series switching in a series mode in one embodiment.

[0049] Figure 14 This is a schematic diagram of the second step circuit control for a two-stage series switching in a series mode in one embodiment.

[0050] Figure 15 This is a schematic diagram of the first step circuit control of a four-segment series switching in a series mode in one embodiment.

[0051] Figure 16 This is a schematic diagram of the second step circuit control for a four-segment series switching in a series mode in one embodiment.

[0052] In the attached diagram, 100 is the motor stator segment assembly; 110 is the first motor stator; 120 is the second motor stator; 130 is the first transfer cabinet; 140 is the second transfer cabinet; 150 is the electronic switch cabinet; 160 is the wiring group; 161 is the wiring copper busbar; and 162 is the wiring hole. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0054] In one embodiment, such as Figure 1As shown, 1.1 represents a low-voltage switchgear group, 1.2 represents a charger, 1.3 represents an energy storage cabinet group, 1.4 represents a DC input switchgear group, 1.5 represents a DC output switchgear group, 2.1 represents a converter cabinet group, 2.2 represents a stator switch station, 3 represents a suspension and guidance system, and 4.1 represents a motor stator, 4.2 represents a motor mover, 5.1 represents a vehicle-mounted code plate, 5.2 represents a laser emission pair, 5.3 represents a ground device, 6 represents a central control room, and 7 represents a braking system. A linear drive traction system testing device includes a power supply and energy storage system, a converter system, a suspension and guidance system, a linear motor system, a control and communication system, a positioning and speed measurement system, and a braking system.

[0055] In this embodiment, the power supply and energy storage system includes a charger, an energy storage cabinet group, a DC output switch cabinet group, and a low-voltage switch cabinet group. The power supply and energy storage system is mainly used to provide DC power to the intermediate circuit of the converter. The converter system mainly includes a converter cabinet group, an electronic switch cabinet group, and a transfer cabinet group. The converter system is used to invert and output three-phase power to drive the linear motor. The linear motor system adopts a segmented power supply method, mainly including the motor stator and mover, stator support, and track. The levitation and guidance system mainly includes a levitation permanent magnet, which is used to achieve stable levitation of the mover. The positioning and speed measurement system includes a comprehensive control unit, a laser code reader, and an on-board code plate, used to monitor the position and speed of the mover in real time and feed it back to the traction control system. The control and communication system includes communication and monitoring, which performs closed-loop control of the converter output based on the position and speed information of the motor mover, and simultaneously monitors and stores relevant variables of the traction system in real time.

[0056] In one embodiment, such as Figure 2 and Figure 3 As shown, the main structure of the linear drive traction system test device includes a T-shaped mover, stator, stator support, and track for the linear motor. The T-shaped mover includes a support frame, a mover permanent magnet, a permanent magnet protective shell, a moving platform, and a limiting structure. The laser detection terminal in the positioning and speed measurement system detects the speed and position of the mover by recognizing the moving vehicle code plate. A traveling wave magnetic field is generated in the three-phase winding through three-phase alternating current. Under the action of the traveling wave magnetic field, the mover permanent magnet generates a driving force that drives the mover to move linearly.

[0057] In this embodiment, the linear drive traction system testing device can be used to study key technologies of linear drive systems, such as linear drive system integration technology, mathematical model of bilateral permanent magnet linear motor, control strategy and algorithm, high real-time and high synchronization traction control and communication technology, stator segment step-changing phase-controlled synchronous switching technology, and positioning speed measurement synchronization real-time technology.

[0058] In one embodiment, such as Figure 4As shown, a linear drive traction system testing device includes: several motor stator segment assemblies 100;

[0059] Each of the motor stator segment assemblies 100 includes two motor stators, an electronic switch cabinet 150, and two transfer cabinets;

[0060] The two motor stators include a first motor stator 110 and a second motor stator 120, and the two adapter cabinets include a first adapter cabinet 130 and a second adapter cabinet 140. Both the first adapter cabinet 130 and the second adapter cabinet 140 have two wiring groups 160. One wiring group 160 on the first adapter cabinet 130 is electrically connected to a first end of the first motor stator 110, and the other wiring group 160 on the first adapter cabinet 130 is electrically connected to a first end of the second motor stator 120. One wiring group 160 on the second adapter cabinet 140 is electrically connected to a second end of the first motor stator 110, and the other wiring group 160 on the second adapter cabinet 140 is electrically connected to a second end of the second motor stator 120.

[0061] The electronic switch cabinet 150 is electrically connected to the first motor stator 110 and the second motor stator 120 respectively, and the electronic switch cabinet 150 is used to control the first motor stator 110 and the second motor stator 120 to be powered on or off.

[0062] Each of the first motor stators 110 and each of the second motor stators 120 in each of the motor stator segment assemblies 100 are electrically connected through each of the first transfer cabinets 130 and each of the second transfer cabinets 140.

[0063] Specifically, by electrically connecting the two wiring groups 160 on the first adapter cabinet 130 to the first end of the first motor stator 110 and the first end of the second motor stator 120 respectively, and by electrically connecting the two adapter groups on the second adapter cabinet 140 to the second end of the first motor stator 110 and the second end of the second motor stator 120 respectively, the electrical connections to the first motor stator 110 and the second motor stator 120 can be achieved by correspondingly connecting the wires to the two adapter groups on the first adapter cabinet 130 and the two adapter groups on the second adapter cabinet 140. According to actual wiring requirements, wiring can be performed on the two wiring groups 160 on the first adapter cabinet and the two wiring groups 160 on the second adapter cabinet, thereby changing the connection method of the first motor stator 110, the second motor stator 120, and the switches in each motor stator segment assembly 100. This enables the conversion of multiple main circuits. By studying various key technologies of linear drive through multiple main circuits, research and development costs can be significantly reduced and the research and development cycle shortened.

[0064] In order to match and connect the terminals of the wiring group 160 with the terminals of the first motor stator 110 and the second motor stator 120 of the three-phase motor, in one embodiment, such as Figure 5 As shown, each of the wiring groups 160 includes three copper busbars 161. The first motor stator 110 and the second motor stator 120 are both three-phase motor stators. The three copper busbars 161 of one wiring group 160 in the first transfer cabinet 130 are electrically connected to the three-phase terminals of the first end of the first motor stator 110. The three copper busbars 161 of another wiring group 160 in the first transfer cabinet 130 are electrically connected to the three-phase terminals of the first end of the second motor stator 120. The three copper busbars 161 of one wiring group 160 in the second transfer cabinet 140 are electrically connected to the three-phase terminals of the second end of the first motor stator 110. The three copper busbars 161 of another wiring group 160 in the second transfer cabinet 140 are electrically connected to the three-phase terminals of the second end of the second motor stator 120.

[0065] In this embodiment, both the first motor stator 110 and the second motor stator 120 are three-phase motor stators. Therefore, the first motor stator 110 has three terminals at each end, and these three terminals are electrically connected to three copper busbars 161 on one set of wiring groups 160 on the first adapter cabinet 130 and three copper busbars 161 on one set of wiring groups 160 on the second adapter cabinet 140. Similarly, the second motor stator 120 has three terminals at each end, and these three terminals are electrically connected to three copper busbars 161 on another set of wiring groups 160 on the first adapter cabinet 130 and three copper busbars 161 on one set of wiring groups 160 on the second adapter cabinet 140. Through this arrangement, the terminals of the wiring groups 160 can be matched and connected to the terminals of the first motor stator 110 and the second motor stator 120 of the three-phase motor.

[0066] To achieve multiple wiring methods, in one embodiment, such as Figure 5 As shown, each of the aforementioned copper busbars 161 is provided with at least five wiring holes 162. Specifically, by providing at least five wiring holes 162 on each of the aforementioned copper busbars 161, one terminal of the first motor stator 110 or the second motor stator 120 can be electrically connected to at least five external electronic components, thereby realizing multiple wiring methods.

[0067] In one embodiment, the motor stator segment assemblies 100 are arranged at equal intervals. Specifically, the first motor stator 110 and the second motor stator 120 in each motor stator segment assembly 100 are arranged side by side. The first motor stators 110 in each motor stator segment assembly 100 are equally spaced in the same row, and the second motor stators 120 in each motor stator segment assembly 100 are equally spaced in the same row. With the above arrangement, the linear drive traction system test device can be used to test linear motion.

[0068] In order to enable separate energization or de-energization control of the two motor stators in the motor stator segment assembly 100, in one embodiment, the electronic switch cabinet 150 includes two switches, each of which is electrically connected to one of the motor stators. Specifically, the electronic switch cabinet 150 includes two switches, each of which is electrically connected to one of the motor stators, and each switch is used to control the energization or de-energization of one of the motor stators.

[0069] In one embodiment, a test method for a linear drive traction system test apparatus, using the linear drive traction system test apparatus described in any of the above embodiments, includes:

[0070] According to any one of the system topologies of parallel mode, open winding mode, leapfrog mode and series mode, each of the first transfer cabinets and each of the second transfer cabinets in each of the motor stator segment assemblies are electrically connected.

[0071] The linear drive traction system test device is tested by controlling the electronic switch cabinets in each of the motor stator segment assemblies.

[0072] In this embodiment, by changing the electrical connection between each first transfer cabinet and each second transfer cabinet in each of the motor stator segment assemblies, the electrical connection between each first motor stator and each second motor stator in each of the motor stator segment assemblies is realized. That is, the linear drive traction system test device is wired in any of the following system topologies: parallel mode, open winding mode, leapfrog mode, and series mode. After completing one of the wiring modes, the linear drive traction system test device is tested by controlling each of the electronic switch cabinets in each of the motor stator segment assemblies.

[0073] In one embodiment, such as Figure 6 As shown, L1-L6 represent the first motor stator, L7-L12 represent the second motor stator, T1, T3, T5, T7, T9 and T11 represent the first transfer cabinet, T2, T4, T6, T8, T10 and T12 represent the second transfer cabinet, and Q1-Q12 represent the individual switches in the electronic switch cabinet.

[0074] In the parallel mode, the first motor stator and the second motor stator of the motor stator segment assembly with odd serial numbers in each motor stator segment assembly are electrically connected to the power lines led out from the converter through the first transfer cabinet.

[0075] The first and second motor stators of the odd-numbered motor stator segment assemblies are connected to the first transfer cabinet of the even-numbered motor stator segment assemblies via the second transfer cabinet of the odd-numbered motor stator segment assemblies, so that the first and second motor stators of the odd-numbered motor stator segment assemblies are respectively connected in parallel with the first and second motor stators of the even-numbered motor stator segment assemblies.

[0076] The first and second motor stators of the motor stator segment assemblies with even serial numbers are star-connected through the second transfer cabinet of the motor stator segment assemblies with even serial numbers.

[0077] The electronic switch cabinets in each of the motor stator segment assemblies are electrically connected to the first motor stator and the second motor stator. Specifically, each electronic switch cabinet includes two switches, each of which is electrically connected to the first motor stator and the second motor stator in the motor stator segment assembly, respectively.

[0078] In this embodiment, as Figure 6 As shown, L1, L3, and L5 represent the first motor stator of the motor stator segment assembly with odd-numbered serial numbers; L7, L9, and L11 represent the second motor stator of the motor stator segment assembly with odd-numbered serial numbers; L2, L4, and L6 represent the first motor stator of the motor stator segment assembly with even-numbered serial numbers; L8, L10, and L12 represent the second motor stator of the motor stator segment assembly with even-numbered serial numbers; T1, T5, and T9 represent the first transfer cabinet of the motor stator segment assembly with odd-numbered serial numbers; and T2, T6, and T10 represent serial numbers... The second transfer cabinet represents the odd-numbered motor stator segment assemblies; T3, T7, and T11 represent the first transfer cabinets for the even-numbered motor stator segment assemblies; T4, T8, and T12 represent the second transfer cabinets for the even-numbered motor stator segment assemblies; Q1, Q2, Q5, Q6, Q9, and Q10 represent the individual switches in the electronic switch cabinets for the odd-numbered motor stator segment assemblies; and Q3, Q4, Q7, Q8, Q11, and Q12 represent the individual switches in the electronic switch cabinets for the even-numbered motor stator segment assemblies.

[0079] In the parallel mode, the first motor stator (L1, L3 and L5) and the second motor stator (L7, L9 and L11) of the motor stator segment assemblies with odd serial numbers are electrically connected to the power lines led out from the converter through the first transfer cabinet (T1, T5 and T9).

[0080] The first stator (L1, L3, and L5) and second stator (L7, L9, and L11) of the odd-numbered stator segment assemblies are connected to the first transfer cabinet (T3, T7, and T11) of the even-numbered stator segment assemblies via the second transfer cabinet (T2, T6, and T10) of the odd-numbered stator segment assemblies. This allows the first stator (L1, L3, and L5) and second stator (L7, L9, and L11) of the odd-numbered stator segment assemblies to be connected in parallel with the first stator (L2, L4, and L6) and second stator (L8, L10, and L12) of the even-numbered stator segment assemblies, respectively.

[0081] The first motor stator (L2, L4 and L6) and the second motor stator (L8, L10 and L12) of the motor stator segment assembly with even serial numbers are star-connected through the second transfer cabinet (T4, T8 and T12) of the motor stator segment assembly with even serial numbers, respectively.

[0082] Each switch (Q1-Q12) in the electronic switch cabinet of each motor stator segment assembly is electrically connected to the first motor stator (L1-L6) and the second motor stator (L7-L12) in each motor stator segment assembly. Specifically, each electronic switch cabinet includes two switches, each of which is electrically connected to the first motor stator and the second motor stator in the motor stator segment assembly, respectively.

[0083] For example, the first motor stator L1 and the second motor stator L7 of the odd-numbered motor stator segment assembly are electrically connected to the power lines led out from the converter through the first transfer cabinet T1, respectively; the first motor stator L1 of the odd-numbered motor stator segment assembly is electrically connected to the first motor stator L2 of the even-numbered motor stator segment assembly through the second transfer cabinet T2 and the first transfer cabinet T3; and the first motor stator L2 of the even-numbered motor stator segment assembly is star-connected through the second transfer cabinet T4.

[0084] Specifically, by connecting the first and second motor stators of the even-numbered motor stator segment assemblies via a star connection through the second transfer cabinet of the even-numbered motor stator segment assemblies, it is ensured that adjacent first and second motor stators are simultaneously powered during each working cycle to form a power supply circuit. In each motor stator segment assembly, an electronic switch cabinet has two switches that control the energization or de-energization of the first and second motor stators respectively. After electrically connecting the first and second motor stators in each motor stator segment assembly in the above manner, the control of each first and second motor stator is achieved by controlling the switches in the electronic switch cabinet of each motor stator segment assembly. For example, by controlling four switches Q1, Q2, Q3, and Q4, the energization or de-energization of two first motor stators L1 and L2, and two second motor stators L7 and L8 can be controlled.

[0085] In this embodiment, as Figure 6 , Figure 10 , Figure 11 and Figure 12 As shown, the specific test method for the parallel mode includes: first, closing two switches Q1 and Q2 in the electronic switch cabinet of the first motor stator segment assembly, and two switches Q3 and Q4 in the electronic switch cabinet of the second motor stator segment assembly; energizing the first motor stator L1 and the second motor stator L7 in the first motor stator segment assembly, and the first motor stator L2 and the second motor stator L8 in the second motor stator segment assembly. Then, closing two switches Q5 and Q6 in the electronic switch cabinet of the third motor stator segment assembly; energizing the first motor stator L3 and the second motor stator L9 in the third motor stator segment assembly. Then, opening two switches Q1 and Q2 in the electronic switch cabinet of the first motor stator segment assembly; de-energizing the first motor stator L1 and the second motor stator L7 in the first motor stator segment assembly. This cycle repeats, sequentially closing and disconnecting the electronic switch cabinets in each motor stator segment assembly, thereby energizing and de-energizing the first and second motor stators in each motor stator segment assembly. This allows the motor mover placed on the energized first and second motor stators to pass through each motor stator under electromagnetic force.

[0086] In this embodiment, by using the parallel circuit wiring method of the linear drive traction system test device, key technologies of the linear drive system, such as the mathematical model of the double-sided permanent magnet linear motor, control strategies and algorithms, high real-time and high synchronization traction control and communication technology, stator segment step-changing phase-controlled synchronous switching technology, and positioning speed measurement synchronous real-time technology, can be studied through continuous experimentation.

[0087] In one embodiment, such as Figure 7 As shown, L1-L6 represent the first motor stator, L7-L12 represent the second motor stator, T1, T3, T5, T7, T9 and T11 represent the first transfer cabinet, T2, T4, T6, T8, T10 and T12 represent the second transfer cabinet, and Q1, Q3, Q5, Q7, Q9 and Q11 represent the electronic switch cabinet.

[0088] In the open winding mode, adjacent motor stator segment assemblies are combined in pairs to form an open winding group, which includes a first motor stator segment assembly and a second motor stator segment assembly.

[0089] The first motor stator and the second motor stator in the first motor stator segment assembly within the open winding are connected in series through the first transfer cabinet and the second transfer cabinet of the first motor stator segment assembly.

[0090] The first motor stator and the second motor stator in the second motor stator segment assembly within the open winding are connected in series through the first transfer cabinet and the second transfer cabinet of the second motor stator segment assembly.

[0091] The two first motor stators and two second motor stators in the two sets of motor stator segment assemblies in each of the open winding groups are connected in series;

[0092] The two first motor stators and two second motor stators in each of the open windings are connected in parallel on the power lines led out of the converter;

[0093] The electronic switch cabinet in the first motor stator segment assembly within the open winding is electrically connected to the first motor stator and the second motor stator in the first motor stator segment assembly, and the electronic switch cabinet in the second motor stator segment assembly within the open winding is connected in series with the first motor stator and the second motor stator in the second motor stator segment assembly.

[0094] In this embodiment, as Figure 7As shown, L1, L3, L5 and L7, L9, L11 represent the first motor stator and the second motor stator in the first motor stator segment assembly within the open winding, respectively; L2, L4, L6 and L8, L10, L12 represent the first motor stator and the second motor stator in the second motor stator segment assembly within the open winding, respectively; T1, T5, T9 and T2, T6, T10 represent the first transfer cabinet and the second transfer cabinet in the first motor stator segment assembly within the open winding, respectively; T3, T7, T11 and T4, T8, T12 represent the first transfer cabinet and the second transfer cabinet in the second motor stator segment assembly within the open winding, respectively; Q1, Q5, and Q9 represent the electronic switch cabinet in the first motor stator segment assembly within the open winding; Q3, Q7, and Q11 represent the electronic switch cabinet in the first motor stator segment assembly within the open winding.

[0095] In the open winding mode, adjacent motor stator segment assemblies are combined in pairs to form an open winding group, which includes a first motor stator segment assembly and a second motor stator segment assembly; the first motor stator (L1, L3 and L5) and the second motor stator (L7, L9 and L11) in the first motor stator segment assembly within the open winding group are connected in series through the first transfer cabinet (T1, T5 and T9) and the second transfer cabinet (T2, T6 and T10) of the first motor stator segment assembly;

[0096] The first motor stator (L2, L4 and L6) and the second motor stator (L8, L10 and L12) in the second motor stator segment assembly within the open winding are connected in series through the first transfer cabinet (T3, T7 and T11) and the second transfer cabinet (T4, T8 and T12) of the second motor stator segment assembly.

[0097] The two first motor stators (L1-L6) and the two second motor stators (L7-L12) in the two sets of motor stator segment assemblies in each of the open winding groups are connected in series;

[0098] The two first motor stators and two second motor stators in each of the open windings are connected in parallel on the power lines led out of the converter;

[0099] The electronic switch cabinet in the first motor stator segment assembly within the open winding is electrically connected to the first motor stator and the second motor stator in the first motor stator segment assembly, and the electronic switch cabinet in the second motor stator segment assembly within the open winding is connected in series with the first motor stator and the second motor stator in the second motor stator segment assembly.

[0100] Specifically, in each of the motor stator segment assemblies, an electronic switch cabinet is provided to control the energization or de-energization of the first and second motor stators. After electrically connecting each first and second motor stator in each motor stator segment assembly in the above manner, the control of each first and second motor stator is achieved by controlling the electronic switch cabinet in each motor stator segment assembly. For example, by controlling two electronic switch cabinets Q1 and Q3, the energization or de-energization of the two first motor stators L1 and L2, and the two second motor stators L7 and L8 can be controlled.

[0101] In this embodiment, the specific test method for the open winding mode is the same as the specific control test method for the parallel mode described above.

[0102] In this embodiment, the open winding mode of the linear drive traction system test device and the parallel mode of the linear drive traction system test device have the same working mechanism. The difference between the two modes is that the open winding mode does not perform star connection of the motor, which allows for the study of motor characteristics and converter control-related characteristics under this circuit topology.

[0103] In one embodiment, such as Figure 8 As shown, L1-L6 represent the first motor stator, L7-L12 represent the second motor stator, T1, T3, T5, T7, T9 and T11 represent the first transfer cabinet, T2, T4, T6, T8, T10 and T12 represent the second transfer cabinet, and Q1, Q3, Q5, Q7, Q9 and Q11 represent the electronic switch cabinet.

[0104] In the frog-jump mode, the first end of the first motor stator in each motor stator segment assembly is connected to the power line led out from the converter through the first adapter cabinet.

[0105] The second end of the first motor stator is connected through the first and second transfer cabinets to realize the series connection of the second end of the first motor stator and the first end of the second motor stator.

[0106] The second end of the second motor stator is star-connected through the second adapter cabinet;

[0107] The electronic switch cabinet in the motor stator section assembly is connected in series with the first motor stator and the second motor stator.

[0108] In one embodiment, such as Figure 8 As shown, L1-L6 represent the first motor stator, L7-L12 represent the second motor stator, T1, T3, T5, T7, T9 and T11 represent the first transfer cabinet, T2, T4, T6, T8, T10 and T12 represent the second transfer cabinet, and Q1, Q3, Q5, Q7, Q9 and Q11 represent the electronic switch cabinet.

[0109] In the leapfrog mode, the first end of the first motor stator (L1-L6) in each motor stator segment assembly is connected to the power line from the converter through the first adapter cabinet (T1, T3, T5, T7, T9 and T11);

[0110] The second end of the first motor stator (L1-L6) is connected to the first transfer cabinet (T1, T3, T5, T7, T9 and T11) and the second transfer cabinet (T2, T4, T6, T8, T10 and T12) to realize the series connection of the second end of the first motor stator (L1-L6) and the first end of the second motor stator (L7-L12);

[0111] The second end of the second motor stator (L7-L12) is star-connected through the second adapter cabinet (T2, T4, T6, T8, T10 and T12);

[0112] The electronic switch cabinets (Q1, Q3, Q5, Q7, Q9 and Q11) in the motor stator section assembly are connected in series with the first motor stator (L1-L6) and the second motor stator (L7-L12).

[0113] Specifically, in each of the motor stator segment assemblies, an electronic switch cabinet is provided to control the energization or de-energization of the first and second motor stators. After electrically connecting each first motor stator and each second motor stator in each motor stator segment assembly in the above manner, the control of each first motor stator and each second motor stator is achieved by controlling each electronic switch cabinet in each motor stator segment assembly. For example, by controlling two electronic switch cabinets Q1 and Q3, the energization or de-energization of the two first motor stators L1 and L2, and the two second motor stators L7 and L8 can be controlled.

[0114] In this embodiment, the specific testing method for the frog-jump mode is the same as the specific testing method for the parallel mode described above.

[0115] In this embodiment, the difference between the leapfrog mode and the parallel mode of the linear drive traction system test device lies in that, in the leapfrog mode, the first and second motor stators in the same motor stator segment assembly are powered by the same converter, while in the parallel mode, the first and second motor stators in the same motor stator segment assembly are powered by different converters. Therefore, in the leapfrog mode, the motor characteristics and converter control-related characteristics under the circuit topology of the leapfrog mode can be studied.

[0116] In one embodiment, such as Figure 9As shown, L1-L6 represent the first motor stator, L7-L12 represent the second motor stator, T1, T3, T5, T7, T9 and T11 represent the first transfer cabinet, T2, T4, T6, T8, T10 and T12 represent the second transfer cabinet, and Q1-Q12 represent the individual switches in the electronic switch cabinet.

[0117] In the series connection mode, each first motor stator in each motor stator segment assembly is connected in series sequentially through a first transfer cabinet and a second transfer cabinet; the first motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line led out from the converter through the first transfer cabinet, and the first motor stator of the motor stator segment assembly that is last in the sequence is star-connected through the second transfer cabinet.

[0118] Each second motor stator in each motor stator segment assembly is connected in series through a first transfer cabinet and a second transfer cabinet. The second motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line led out from the converter through the first transfer cabinet. The second motor stator of the motor stator segment assembly that is last in the sequence is star-connected through the second transfer cabinet.

[0119] One switch in the electronic switch cabinet within each motor stator segment assembly is connected in parallel at both ends of the first motor stator via a first transfer cabinet and a second transfer cabinet; the other switch in the electronic switch cabinet is connected in parallel at both ends of the second motor stator via a first transfer cabinet and a second transfer cabinet.

[0120] In this embodiment, as Figure 9 As shown, L1-L6 represent the first motor stator, L7-L12 represent the second motor stator, T1, T3, T5, T7, T9 and T11 represent the first transfer cabinet, T2, T4, T6, T8, T10 and T12 represent the second transfer cabinet, and Q1-Q12 represent the individual switches in the electronic switch cabinet.

[0121] In the series connection mode, the first motor stators (L1-L6) in each motor stator segment assembly are connected in series sequentially through the first transfer cabinet (T1, T3, T5, T7, T9 and T11) and the second transfer cabinet (T2, T4, T6, T8, T10 and T12); the first motor stator (L1-L6) of the motor stator segment assembly that is first in the sequence is electrically connected to the power line from the converter through the first transfer cabinet (T1, T3, T5, T7, T9 and T11), and the first motor stator (L1-L6) of the motor stator segment assembly that is last in the sequence is star-connected through the second transfer cabinet (T2, T4, T6, T8, T10 and T12);

[0122] Each second motor stator (L7-L12) in each motor stator segment assembly is connected in series through a first transfer cabinet (T1, T3, T5, T7, T9 and T11) and a second transfer cabinet (T2, T4, T6, T8, T10 and T12). The second motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line from the converter through the first transfer cabinet (T1, T3, T5, T7, T9 and T11). The second motor stators (L7-L12) of the motor stator segment assembly that is last in the sequence are star-connected through the second transfer cabinet (T2, T4, T6, T8, T10 and T12).

[0123] One switch (Q1, Q3, Q5, Q7, Q9, and Q11) in the electronic switch cabinet within each motor stator segment assembly is connected in parallel across the two ends of the first motor stator via a first transfer cabinet (T1, T3, T5, T7, T9, and T11) and a second transfer cabinet (T2, T4, T6, T8, T10, and T12); the other switch (Q2, Q4, Q6, Q8, Q10, and Q12) in the electronic switch cabinet is connected in parallel across the two ends of the second motor stator via a first transfer cabinet (T1, T3, T5, T7, T9, and T11) and a second transfer cabinet (T2, T4, T6, T8, T10, and T12).

[0124] Specifically, after electrically connecting each first motor stator and each second motor stator in each motor stator segment assembly in the above manner, controlling each first motor stator and each second motor stator is achieved by controlling each switch in the electronic switch cabinet of each motor stator segment assembly. For example, by controlling two switches Q1 and Q2, the first motor stator L1 and the second motor stator L7 can be energized or de-energized.

[0125] In this embodiment, the specific testing methods for the series mode include: two-stage series switching and four-stage series switching.

[0126] like Figure 9 , Figure 13 and Figure 14As shown, in the two-stage series switching, all switches in the electronic switch cabinet are first closed, while only two switches Q1 and Q2 in the electronic switch cabinet of the first motor stator segment assembly, and two switches Q3 and Q4 in the electronic switch cabinet of the second motor stator segment assembly are opened; this energizes the first motor stator L1 and the second motor stator L7 in the first motor stator segment assembly, and the first motor stator L2 and the second motor stator L8 in the second motor stator segment assembly. Then, two switches Q5 and Q6 in the electronic switch cabinet of the third motor stator segment assembly are opened, and two switches Q1 and Q2 in the electronic switch cabinet of the first motor stator segment assembly are closed; this energizes the first motor stator L2 and the second motor stator L8 in the second motor stator segment assembly, and the first motor stator L3 and the second motor stator L9 in the third motor stator segment assembly. This process is repeated, sequentially disconnecting and sequentially closing the electronic switch cabinets in each motor stator segment assembly, that is, sequentially energizing and de-energizing the first and second motor stators in each motor stator segment assembly, so that the motor mover placed on the energized first and second motor stators can pass through each motor stator under electromagnetic force.

[0127] like Figure 15 and Figure 16 As shown, in the four-stage series switching, all switches in the electronic switch cabinet are closed first, while only the eight switches Q1-Q8 in the electronic switch cabinets of the four motor stator segment assemblies in the first, second, third, and fourth positions are opened, so that the eight motor stators L1-L4 and L7-L10 in the four motor stator segment assemblies in the first, second, third, and fourth positions are energized; then the two switches Q9 and Q10 in the electronic switch cabinet of the motor stator segment assembly in the fifth position are opened, and the two switches Q1 and Q2 in the electronic switch cabinet of the motor stator segment assembly in the first position are closed, so that the eight motor stators L2-L5 and L2-L11 in the four motor stator segment assemblies in the second, third, fourth, and fifth positions are energized. This process is repeated, sequentially disconnecting and sequentially closing the electronic switch cabinets in each motor stator segment assembly, that is, sequentially energizing and de-energizing the first and second motor stators in each motor stator segment assembly, so that the motor mover placed on the energized first and second motor stators can pass through each motor stator under electromagnetic force.

[0128] In this embodiment, the study of the circuit wiring method of the series mode of the linear drive traction system test device allows for flexible changes in the number of stator segments, thereby enabling the study of motor-related characteristics and converter control-related characteristics with different stator segment lengths.

[0129] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A testing device for a linear drive traction system, characterized in that, include: Several motor stator segment assemblies; Each of the motor stator segment assemblies includes two motor stators, an electronic switch cabinet, and two transfer cabinets; The two motor stators include a first motor stator and a second motor stator, and the two adapter cabinets include a first adapter cabinet and a second adapter cabinet. Each of the first adapter cabinet and the second adapter cabinet has two wiring groups. One wiring group on the first adapter cabinet is electrically connected to a first end of the first motor stator, and the other wiring group on the first adapter cabinet is electrically connected to a first end of the second motor stator. One wiring group on the second adapter cabinet is electrically connected to a second end of the first motor stator, and the other wiring group on the second adapter cabinet is electrically connected to a second end of the second motor stator. The electronic switch cabinet is electrically connected to the first motor stator and the second motor stator respectively, and the electronic switch cabinet is used to control the first motor stator and the second motor stator to be energized or de-energized. Each of the first motor stators and each of the second motor stators in each of the motor stator segment assemblies are electrically connected through each of the first transfer cabinets and each of the second transfer cabinets.

2. The linear drive traction system testing device according to claim 1, characterized in that, Each of the aforementioned wiring groups includes three copper busbars, and both the first motor stator and the second motor stator are three-phase motor stators; the three copper busbars of one wiring group in the first transfer cabinet are electrically connected to the three-phase terminals of the first end of the first motor stator, the three copper busbars of another wiring group in the first transfer cabinet are electrically connected to the three-phase terminals of the first end of the second motor stator, the three copper busbars of one wiring group in the second transfer cabinet are electrically connected to the three-phase terminals of the second end of the first motor stator, and the three copper busbars of another wiring group in the second transfer cabinet are electrically connected to the three-phase terminals of the second end of the second motor stator.

3. The linear drive traction system testing device according to claim 2, characterized in that, Each of the aforementioned copper busbars has at least five wiring holes.

4. The linear drive traction system testing device according to claim 1, characterized in that, The stator segments of each motor are arranged at equal intervals.

5. The linear drive traction system testing device according to claim 1, characterized in that, The electronic switch cabinet includes two switches, each of which is electrically connected to one of the motor stators.

6. A test method for a linear drive traction system test device, implemented based on the linear drive traction system test device according to any one of claims 1-5, characterized in that, The method includes: According to any one of the system topologies of parallel mode, open winding mode, leapfrog mode and series mode, each of the first transfer cabinets and each of the second transfer cabinets in each of the motor stator segment assemblies are electrically connected. The linear drive traction system test device is tested by controlling the electronic switch cabinets in each of the motor stator segment assemblies.

7. The test method of the linear drive traction system test device according to claim 6, characterized in that, In the parallel mode, The first and second motor stators of the motor stator segments with odd serial numbers in each of the motor stator segments are electrically connected to the power lines led out from the converter through the first transfer cabinet. The first and second motor stators of the odd-numbered motor stator segment assemblies are connected to the first transfer cabinet of the even-numbered motor stator segment assemblies via the second transfer cabinet of the odd-numbered motor stator segment assemblies, so that the first and second motor stators of the odd-numbered motor stator segment assemblies are respectively connected in parallel with the first and second motor stators of the even-numbered motor stator segment assemblies. The first and second motor stators of the even-numbered motor stator segment assemblies are star-connected through the second transfer cabinet of the even-numbered motor stator segment assemblies.

8. The test method of the linear drive traction system test device according to claim 6, characterized in that, In the open winding mode The adjacent motor stator segment assemblies are combined in pairs to form an open winding group, the open winding group including a first motor stator segment assembly and a second motor stator segment assembly; The first motor stator and the second motor stator in the first motor stator segment assembly within the open winding are connected in series through the first transfer cabinet and the second transfer cabinet of the first motor stator segment assembly. The first motor stator and the second motor stator in the second motor stator segment assembly within the open winding are connected in series through the first transfer cabinet and the second transfer cabinet of the second motor stator segment assembly. The two first motor stators and two second motor stators in the two sets of motor stator segment assemblies in each of the open winding groups are connected in series; The two first motor stators and two second motor stators in each of the open windings are connected in parallel on the power lines led out of the converter.

9. The test method of the linear drive traction system test device according to claim 6, characterized in that, In the frog-jumping mode The first end of the first motor stator in each motor stator segment assembly is connected to the power line led out from the converter through the first adapter cabinet. The second end of the first motor stator is connected through the first and second transfer cabinets to realize the series connection of the second end of the first motor stator and the first end of the second motor stator. The second end of the second motor stator is star-connected through the second adapter cabinet.

10. The test method of the linear drive traction system test device according to claim 6, characterized in that, In the series mode: Each first motor stator in each motor stator segment assembly is connected in series via a first transfer cabinet and a second transfer cabinet; the first motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line led out from the converter via the first transfer cabinet, and the first motor stator of the motor stator segment assembly that is last in the sequence is star-connected via the second transfer cabinet. Each second motor stator in each motor stator segment assembly is connected in series through a first transfer cabinet and a second transfer cabinet. The second motor stator of the motor stator segment assembly that is first in the sequence is electrically connected to the power line led out from the converter through the first transfer cabinet. The second motor stator of the motor stator segment assembly that is last in the sequence is star-connected through the second transfer cabinet. One switch in the electronic switch cabinet within each motor stator segment assembly is connected in parallel at both ends of the first motor stator via a first transfer cabinet and a second transfer cabinet; the other switch in the electronic switch cabinet is connected in parallel at both ends of the second motor stator via a first transfer cabinet and a second transfer cabinet.

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