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Motor driving device with fault tolerance function

A technology of motor drive and fault tolerance function, which is applied in the direction of AC motor control, electrical components, control systems, etc., and can solve problems such as high magnetic field weakening rate, low speed and large torque

Active Publication Date: 2015-07-08
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the problems of high magnetic field weakening rate, low speed, high torque, and high reliability of the current permanent magnet motor drive device, and proposes a new permanent magnet motor drive device

Method used

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  • Motor driving device with fault tolerance function
  • Motor driving device with fault tolerance function
  • Motor driving device with fault tolerance function

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Such as figure 1 As shown, the motor drive device with fault-tolerant function of the present invention at least includes a permanent magnet motor 1, a battery pack 2, two three-phase inverters 3, 6, a pre-charging circuit 4, a short-circuit device 5, four IGBT modules 7 , 8 , 9 , 10 and a capacitor 37 . The first three-phase inverter 3 includes a first IGBT module 31, a second IGBT module 32, a third IGBT module 33, a fourth IGBT module 34, a fifth IGBT module 35 and a sixth IGBT module 36; the second The three-phase inverter 6 includes an eleventh IGBT module 61, a twelfth IGBT module 62, a thirteenth IGBT module 63, a fourteenth IGBT module 64, a fifteenth IGBT module 65 and a sixteenth IGBT module 66; The magneto 1 includes a first winding 11, a second winding 12, a third winding 13, a fourth winding 14, a fifth winding 15 and a si...

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Abstract

Provided is a motor driving device with a fault tolerance function. Six windings of a permanent magnet motor (1) are distributed sequentially in a mutually staggered 60-degree electric angle in a stator. The A, C, E ends of the six-phase winding are connected with the alternating current output phase of a first three-phase inverter (3), and the B, D, F ends of the six-phase winding are connected with the alternating current output phase of a second three-phase inverter (6); the other ends, a and d, b and e, c and f, of the six-phase winding are connected with the three-phase alternating current input ends of a rectifier bridge (51) of a short-circuiting device; a seventeenth IGBT module (52) of the short-circuiting device (5) is connected with the rectifier bridge (51) of the short-circuiting device (5) in parallel, and the on-off of the seventeenth IGBT module (52) controls circuit shorting and opening of a circuit on the alternating current input side of the rectifier bridge (51). A ninth IGBT module (9) is connected with the first three-phase inverter (3) in parallel, a tenth IGBT module (10) is connected with the second three-phase inverter (6) in parallel, the on-off of the ninth IGBT module (9) or the tenth IGBT module controls circuit shorting and opening of the A, C, E ends or the B, D, F ends of the six-phase winding.

Description

technical field [0001] The invention relates to a motor drive device, in particular to a motor drive device with multiple working modes, fault tolerance function and protection for inverters. Background technique [0002] Permanent magnet motors have high power density and high efficiency, so they are widely used in the fields of aviation, aerospace, military industry and electric vehicles. Many permanent magnet motor drives require low speed and high torque on the one hand, and a wide range of speed regulation on the other hand, that is, high-speed field weakening. At the same time, they also require high reliability or good fault tolerance. At present, multi-phase motors are mostly used to achieve fault-tolerant control and improve the reliability of the drive device. However, this method can only achieve fault-tolerant control for limited faults, and it is difficult to isolate faults, so the practicability is relatively poor. Contents of the invention [0003] The pres...

Claims

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Application Information

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IPC IPC(8): H02P25/18H02P27/06
Inventor 赵峰温旭辉
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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