Multi-parameter identification method of flux linkage adjustable permanent magnet auxiliary synchronous reluctance motor

A reluctance motor and auxiliary synchronization technology, applied in the field of motor parameter identification, can solve problems such as the problem of online motor parameter identification

Active Publication Date: 2020-11-10
SOUTHEAST UNIV
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Problems solved by technology

[0004] Different from the traditional permanent magnet synchronous motor, the flux linkage adjustable permanent magnet assisted synchronous reluctance motor has the inherent characteristics of rich magnetic field space harmonics, tight AC / DC axis current coupling, strong rotor salient polarity, and nonlinear time-varying parameters. Therefore, it brings difficulties to the online identification of the parameters of the motor.

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  • Multi-parameter identification method of flux linkage adjustable permanent magnet auxiliary synchronous reluctance motor
  • Multi-parameter identification method of flux linkage adjustable permanent magnet auxiliary synchronous reluctance motor
  • Multi-parameter identification method of flux linkage adjustable permanent magnet auxiliary synchronous reluctance motor

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Embodiment Construction

[0063] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.

[0064] like figure 1 , figure 2 As shown, under the cooperation of the torque flux linkage control algorithm, on the one hand, the torque flux linkage control algorithm implements the injection of the high-frequency flux linkage signal, and on the other hand, the torque flux linkage control algorithm provides the flux linkage adjustable permanent magnet assist. High-frequency flux linkage λ of synchronous reluctance machine in steady state sh , the speed ω r , the stator temperature T 0 , the alternating and direct axis voltage u dq and current i dq .

[0065] Based on this, the parameter identification method proposed by the ...

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Abstract

The invention discloses a multi-parameter identification method of a flux linkage adjustable permanent magnet auxiliary synchronous reluctance motor, and the method mainly comprises four steps: A, building a static inductance data table and an iron loss current data table based on off-line finite element electromagnetic field analysis under the cooperation of a torque flux linkage control algorithm; B, performing the high-frequency equivalent resistance and dynamic inductance identification based on high-frequency components; C, performing stator resistance and permanent magnet flux linkage identification based on fundamental frequency components; D, performing flux linkage separation of different coercive forces and rotor temperature identification. According to the method, the online identification of multiple physical parameters such as static/dynamic inductance, the stator resistance, permanent magnet flux linkage and rotor temperature of the flux linkage adjustable permanent magnet auxiliary synchronous reluctance motor can be realized, and the dynamic separation of low-coercivity permanent magnet flux linkage can also be realized.

Description

technical field [0001] The invention relates to a multi-parameter identification method of a permanent magnet auxiliary synchronous reluctance motor with adjustable flux linkage, and belongs to the technical field of motor parameter identification. Background technique [0002] The permanent magnet-assisted synchronous reluctance motor with adjustable flux linkage adopts the hybrid excitation mode of permanent magnet and direct-axis current, and adopts permanent magnet torque to assist the reluctance torque. Coercive permanent magnets, so this type of motor has good comprehensive motor performance in terms of torque density, power factor, efficiency, magnetic adjustment capability, and fault tolerance. The high-performance control and improved torque performance of the permanent magnet-assisted synchronous reluctance motor with adjustable flux linkage are inseparable from the online identification of the motor model parameters. [0003] The parameter identification of the e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P21/20H02P21/05H02P25/098H02P25/026H02P27/08H02P6/34
CPCH02P21/14H02P21/20H02P21/05H02P25/098H02P25/026H02P27/08H02P6/34H02P2207/05
Inventor 王政余开亮叶江川李玉庆
Owner SOUTHEAST UNIV
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