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Fault tolerance control system for double three-phase permanent magnet synchronous motor when one phase is in open circuit

A technology of permanent magnet synchronous motor and double-three-phase permanent magnet, which is applied in the field of electrical transmission, can solve the problems of complex control hardware circuit, complex mathematical model of the system, and large parameter dependence, and achieve simple switching and optimization, simple hardware circuit, The effect of superior performance

Active Publication Date: 2014-01-08
浙江乾方电气有限公司
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Problems solved by technology

However, these control hardware circuits are relatively complex, and the fault-tolerant control strategy is relatively complicated for the mathematical model of the system, and has a large dependence on parameters.

Method used

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  • Fault tolerance control system for double three-phase permanent magnet synchronous motor when one phase is in open circuit
  • Fault tolerance control system for double three-phase permanent magnet synchronous motor when one phase is in open circuit
  • Fault tolerance control system for double three-phase permanent magnet synchronous motor when one phase is in open circuit

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with accompanying drawing:

[0025] The fault-tolerant control system for double-three-phase permanent magnet synchronous motors when one phase is open is composed of double-three-phase permanent magnet synchronous motors, hardware drive circuits with fault isolation and fault tolerance functions, and a new type of fault-tolerant control strategy. Among them, the hardware control system of dual three-phase permanent magnet synchronous motor with fault tolerance function is as follows: Figure 5 As shown; it is characterized in that the hardware system is composed of six bridge arms, taking the A-phase bridge arm as an example, each bridge arm is composed of a fast fuse FTF_A and two full-control power switching devices from top to bottom S1, S2, and a normally closed relay KA, wherein one end of the normally closed relay KA is connected to the midpoint of the power switching device, and the other end i...

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Abstract

The invention relates to a fault tolerance control system for a double three-phase permanent magnet synchronous motor when one phase is in open circuit. The fault tolerance control system consists of the double three-phase permanent magnet synchronous motor, a hardware driving circuit with fault isolation and tolerance functions as well as a novel fault tolerance control strategy. When any one phase of the double three-phase permanent magnet synchronous motor has faults, the system can cut off a fault phase in time, select the fault tolerance control strategy according to the running state of the motor before the faults occur and realize a fault tolerance control function of the double three-phase permanent magnet synchronous motor. The fault tolerance control system has the characteristics of simple hardware structure, high reliability and strong robustness; an optimal fault tolerance control strategy can be selected according to the running state of the motor before the faults occur and the excellent control performance of the system after the fault tolerance is realized is realized, and the like.

Description

technical field [0001] The invention relates to the field of electric transmission, in particular to a fault-tolerant control system for double-three-phase permanent magnet synchronous motors when one phase is open. Background technique [0002] The three-phase AC drive system has always had an absolute advantage in the traditional transmission system. However, in recent years, due to some special applications such as: aerospace, electric / hybrid fuel vehicles, ship propulsion systems, etc., higher requirements have been placed on the reliability and power range of the speed control system. Restricted by the voltage and power levels of power electronic devices, in high-power applications, power electronic devices are often connected in series and in parallel to achieve multi-level high-power output, but what follows is the voltage equalization and Problems such as current sharing affect the overall reliability of the speed control system; corresponding to the multi-level str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/00H02P21/00
Inventor 王海兵寿金乔张政毓程俊
Owner 浙江乾方电气有限公司
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