Indirect matrix transformation multi-phase multi-level permanent magnet motor system and its control method

A matrix transformation, permanent magnet motor technology, applied in motor generator control, electronic commutation motor control, AC motor control and other directions, can solve problems such as adding energy feedback circuit, achieve high magnetization efficiency, short winding length, The effect of high energy density
CN105896856BActive Publication Date: 2018-03-20SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2018-03-20

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Abstract

The invention discloses an indirect matrix transformation type multi-phase multi-level permanent magnet motor system. The indirect matrix transformation type multi-phase multi-level permanent magnet motor system includes a double-stator multi-phase composite permanent magnet synchronous motor, wherein two independent five-phase three-level inverters supplies power for stator winding ports of the motor respectively; an independent controllable rectifier supplies power for each five-phase three-level inverter; the two controllable rectifiers can share one set of LC filter at the power grid side; the LC filter includes a three-phase grid-connected inductor and a three-phase filter capacitor which is connected with the three-phase grid-connected inductor in parallel; and the first five-phase three-level inverter and the second five-phase three-level inverter are respectively connected with the two stator winding ports of the double-stator multi-phase composite permanent magnet synchronous motor. The invention also discloses a control method of the indirect matrix transformation type multi-phase multi-level permanent magnet motor system. The indirect matrix transformation type multi-phase multi-level permanent magnet motor system and the control method thereof can significantly improve reliability, power density, torque smoothness and operation efficiency of the motor driving system, and can lay the foundation of solving the technical difficulty that a high capacity motor traction driving system requires compact designs, reliable operation and energy-efficient aspects.
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Description

technical field

[0001] The invention is a novel dual-stator multi-phase composite permanent magnet motor drive system based on a multi-phase multi-level matrix converter, which belongs to the technical fields of electric engineering, motor and power electronics. Background technique

[0002] At present, the requirements for capacity, efficiency, power density, and reliability of motor drive systems are constantly increasing. Early traction drive systems mainly used asynchronous motors. Although the asynchronous motor is simple in structure and durable, its power factor and efficiency are limited. Due to the advantages of power density and efficiency, permanent magnet motors have gradually become the development trend of drive motors. The permanent magnet synchronous motor has the advantages of simple structure, small size, light weight, small loss and high efficiency. The switched reluctance motor has a simple structure and high reliability, but it has large torque fluctu...

Claims

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