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SIC device current source type dual three-phase permanent magnet synchronous motor drive system and method

A dual-three-phase permanent magnet and current source technology, which is applied in the direction of motor generator control, electronic commutation motor control, control system, etc., to achieve the effect of improving performance, improving operating efficiency, and improving efficiency

Active Publication Date: 2021-09-21
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the traditional motor drive system soft switching technologies are aimed at voltage source converters, and have not yet achieved technological breakthroughs in current source soft switching.

Method used

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  • SIC device current source type dual three-phase permanent magnet synchronous motor drive system and method
  • SIC device current source type dual three-phase permanent magnet synchronous motor drive system and method
  • SIC device current source type dual three-phase permanent magnet synchronous motor drive system and method

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Embodiment Construction

[0106] The technical solutions provided by the present invention will be described in detail below in conjunction with specific examples. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0107] The present invention provides a SiC device current source type dual three-phase permanent magnet synchronous motor drive system, the main circuit topology of which is as follows: figure 1 shown, including:

[0108] The two motor stator winding ports located on the side of the dual three-phase permanent magnet synchronous motor 1.10 are respectively fed by two current source inverters (1.6, 1.7) connected in series;

[0109] The AC sides of the two current source inverters (1.6, 1.7) connected in series are respectively connected in parallel with the three-phase filter capacitors (1.8, 1.9);

[0110] One end of the DC side of two current source inverters ...

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Abstract

The invention discloses a SiC device current source type dual three-phase permanent magnet synchronous motor drive system using soft switching technology. The system includes: two motor stator winding ports located on the side of the dual three-phase permanent magnet synchronous motor, two current Source type inverter, two three-phase filter capacitors, DC bus inductance, power supply side chopper, voltage source, zero voltage switch auxiliary circuit; method includes: including control process of current source type inverter one, current source type The control process of the inverter 2 and the control process of the soft switch. The multi-phase winding is fed by two series-connected current source power converters, which improves the reliability and fault tolerance of the motor drive system. At the same time, soft switching technology and active damping technology are adopted to make the SiC device switch flexible and suppress It solves the electromagnetic interference problem caused by the high-frequency operation of SiC devices, improves the performance of the motor drive system, and has the advantages of small torque ripple and strong fault tolerance.

Description

technical field [0001] The invention belongs to the field of motor drive, and relates to a multi-phase motor drive system, and more specifically relates to a current source type dual-three-phase motor drive system and a control method thereof. Background technique [0002] At present, the power of the motor system is continuously increasing, and the size of the corresponding motor is also continuously expanding. The stator winding of the traditional three-phase motor system is three-phase, and the power of the motor is increased by connecting the three-phase windings in series and parallel, and the three-phase power converter is used to feed the motor. However, the windings of this traditional three-phase motor are concentrated and distributed throughout the entire space of the motor, which is not conducive to the modular production and assembly of the motor. The continuous increase of motor power has brought greater difficulties to the production and assembly of motors. W...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/22H02P6/08H02P25/026H02P27/08
CPCH02P25/02H02P27/08H02P21/22
Inventor 王政徐阳刘鹏程程明
Owner SOUTHEAST UNIV
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