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Memory motor control method based on parameter identification

A technology of memorizing motors and control methods, which is applied in the direction of motor generator control, AC motor control, electronic commutation motor control, etc., can solve problems such as poor effect magnetic regulation control, and achieve improved efficiency, high accuracy, and robustness strong effect

Active Publication Date: 2021-07-20
SOUTHEAST UNIV
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Problems solved by technology

[0005] Purpose of the invention: The present invention proposes a memory motor control method based on parameter identification for the problems of poor effect of applying the MTPA and FW control methods of permanent magnet synchronous motors to memory motors and magnetic modulation control.

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  • Memory motor control method based on parameter identification
  • Memory motor control method based on parameter identification
  • Memory motor control method based on parameter identification

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Embodiment Construction

[0050] The technical solution of the present invention will be further introduced below in combination with specific implementation methods and accompanying drawings.

[0051] In the specific embodiment of the present invention, a memory motor control method based on parameter identification is disclosed, such as figure 1 As shown, it specifically includes the following steps:

[0052] S1. Off-line measurement of motor phase resistance R, no-load dq axis static inductance L d0 , L q0 , measure the magnetization curve of the memory motor, select two high and low magnetization states (MS1 and MS2), and record the minimum d-axis demagnetization current value (negative value) that can be applied in the MS1 state, denoted as I de , figure 2 is the relationship curve between charge and demagnetization current and flux linkage, I deThat is, to maintain the minimum magnetizing current of MS1;

[0053] S2. Design an active disturbance rejection feedforward decoupling current cont...

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Abstract

The invention discloses a memory motor control method based on parameter identification, and the method comprises the steps: designing an active-disturbance-rejection current controller based on feedforward decoupling, and carrying out the online identification of a permanent magnet flux linkage and dq-axis inductance of a memory motor in combination with a least square method. based on the identified inductance parameters, the maximum torque current ratio and field weakening control of the memory motor in different magnetization states and a switching algorithm between the two control methods are realized, and the load demagnetization effect in a high magnetization state is considered; meanwhile, a magnetic adjustment control module is designed according to the identified permanent magnet flux linkage; according to the control method provided by the invention, the control performance and the operation efficiency can be improved through an online identification method according to the characteristic of large parameter change of the memory motor.

Description

technical field [0001] The invention relates to motor control technology, in particular to a memory motor control method based on parameter identification. Background technique [0002] Compared with the ordinary permanent magnet synchronous motor, the memory motor (MM) has variable permanent magnet flux linkage, which has attracted the attention and recognition of scholars at home and abroad. Usually, the magnetizing current pulse is applied at low speed to make the motor in a high magnetization state and improve the torque output capability; the demagnetization current pulse is applied at the high speed operation stage to make the motor in a low magnetization state, widen the speed range and reduce the loss of magnetic field weakening . [0003] The inductance parameters of the memory motor vary greatly under different magnetization states and load conditions, so the maximum torque current ratio (Maximum-Torque-per-Ampere, MTPA) and flux-weakening (Flux-Weakening, FW) con...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/14H02P21/22H02P25/02
CPCH02P21/0003H02P21/14H02P21/141H02P21/22H02P25/02
Inventor 林鹤云仲宇翔阳辉陈智勇王伟
Owner SOUTHEAST UNIV
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