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Current setting method for open-circuit fault tolerance control of five-phase permanent magnet synchronous motor

A permanent magnet synchronous motor, winding open circuit technology, applied in the direction of torque ripple control, etc., can solve the problem of weak torque output capacity of the motor

Active Publication Date: 2016-07-06
黑龙江省工研院资产经营管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of weak motor torque output capability in the fault-tolerant control of the open circuit fault of the conventional five-phase permanent magnet synchronous motor winding, and to provide a current setting for the fault-tolerant control of the open circuit fault of the five-phase permanent magnet synchronous motor winding method

Method used

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  • Current setting method for open-circuit fault tolerance control of five-phase permanent magnet synchronous motor
  • Current setting method for open-circuit fault tolerance control of five-phase permanent magnet synchronous motor
  • Current setting method for open-circuit fault tolerance control of five-phase permanent magnet synchronous motor

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specific Embodiment approach 1

[0132] Specific implementation mode one: the following combination Figure 2 to Figure 5 This embodiment is described. The current setting method used in the five-phase permanent magnet synchronous motor winding open-circuit fault fault-tolerant control described in this embodiment is the case of one-phase open circuit.

[0133] A five-phase permanent magnet synchronous motor can use a five-phase full-bridge inverter (such as figure 2 shown) or five-phase six-leg inverter (such as image 3 shown) for power supply, where image 3 The topology shown is disclosed in the Chinese patent "Neighboring Five-Vector SVPWM Method Based on Five-Phase Six-Wire Topology" with publication number CN103051273A. The schematic diagram of the winding space of a five-phase permanent magnet synchronous motor is shown in Figure 4 shown.

[0134] The number of turns in series for each phase of the five-phase permanent magnet synchronous motor A, B, C, D, and E phase windings is N, and the axes ...

specific Embodiment approach 2

[0174] Specific embodiment two: below in conjunction with 2 to Figure 4 , Image 6 with Figure 7 This embodiment is described. The current setting method used in the five-phase permanent magnet synchronous motor winding open-circuit fault fault-tolerant control described in this embodiment is the case of two-phase open-circuit.

[0175] A five-phase permanent magnet synchronous motor can use a five-phase full-bridge inverter (such as figure 2 shown) or five-phase six-leg inverter (such as image 3 shown) for power supply, where image 3 The topology shown is disclosed in the Chinese patent "Neighboring Five-Vector SVPWM Method Based on Five-Phase Six-Wire Topology" with publication number CN103051273A. The schematic diagram of the winding space of a five-phase permanent magnet synchronous motor is shown in Figure 4 shown.

[0176] The number of turns in series for each phase of the five-phase permanent magnet synchronous motor A, B, C, D, and E phase windings is N, a...

specific Embodiment approach 3

[0221] Specific embodiment three: below in conjunction with 2 to Figure 4 , Figure 8 with Figure 9 This embodiment is described. The current setting method used in the five-phase permanent magnet synchronous motor winding open-circuit fault fault-tolerant control described in this embodiment is for the case of three-phase open circuit.

[0222] A five-phase permanent magnet synchronous motor can use a five-phase full-bridge inverter (such as figure 2 shown) or five-phase six-leg inverter (such as image 3 shown) for power supply, where image 3 The topology shown is disclosed in the Chinese patent "Neighboring Five-Vector SVPWM Method Based on Five-Phase Six-Wire Topology" with publication number CN103051273A. The schematic diagram of the winding space of a five-phase permanent magnet synchronous motor is shown in Figure 4 shown.

[0223] The number of turns in series for each phase of the five-phase permanent magnet synchronous motor A, B, C, D, and E phase winding...

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Abstract

A current setting method for open-circuit fault tolerance control of a five-phase permanent magnet synchronous motor belongs to the field of motor control. The current setting method settles a problem of low motor torque output capability in fault tolerance control of routine five-phase permanent magnet synchronous motor open-circuit faults. The current setting method is characterized in that a five-phase permanent magnet synchronous motor is powered by a five-phase full-bridge or five-phase six-bridge inverter; on condition that one-phase, two-phase or three-phase winding open-circuit fault of the motor occurs, for making the motor output a highest smooth torque, maximizing of amplitude of a forward rotation component is required under a precondition that a forward rotation component in a synthetic magnetomotive force is zero; and a positive circular rotating magnetic field with highest amplitude is generated in an air gap. The input current of each residual winding phase is adjusted. Compared with a traditional winding open-circuit fault tolerance control method, the current setting method can improve torque output capability of the five-phase permanent magnet synchronous motor on the condition of winding open-circuit fault, realizing higher output torque and smaller torque fluctuation.

Description

technical field [0001] The invention belongs to the field of motor control. Background technique [0002] Since the 21st century, with the increasingly serious energy crisis and environmental pollution problems, new energy vehicles represented by electric vehicles have gained more and more attention. For electric vehicles, the safety and reliability of their electric drive systems are of paramount importance. However, when the traditional three-phase permanent magnet synchronous motor has a winding open circuit or a short circuit fault, the output torque of the motor will change drastically, and even fail to work. The five-phase permanent magnet synchronous motor has good fault-tolerant operation ability due to its redundant phase number. It can adjust the current of the remaining phase winding through the inverter when the motor has a winding open circuit fault, so that the motor still has a certain torque output capability. Therefore, the five-phase permanent magnet sync...

Claims

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Application Information

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IPC IPC(8): H02P6/10
CPCH02P6/10
Inventor 隋义刘勇程路明张书宽尹佐生
Owner 黑龙江省工研院资产经营管理有限公司
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