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A Memory Motor Control Method Based on Parameter Identification

A technology of memory motor and control method, which is applied in motor generator control, AC motor control, electronic commutation motor control and other directions, can solve the problems of poor magnetic control and other problems, and achieves improved efficiency, high accuracy and robustness. strong effect

Active Publication Date: 2022-06-21
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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  • A Memory Motor Control Method Based on Parameter Identification
  • A Memory Motor Control Method Based on Parameter Identification
  • A Memory Motor Control Method Based on Parameter Identification

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Embodiment Construction

[0050] The technical solutions of the present invention will be further introduced below with reference to the specific embodiments and the 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 shown, including the following steps:

[0052] S1. Motor phase resistance R, no-load dq-axis static inductance L measured offline 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 by the MS1 state, denoted as I de , figure 2 is the change relationship between the charging and demagnetizing current and the flux linkage, I deThat is to maintain the minimum magnetizing current of MS1;

[0053] S2. Design the active disturbance rejection feedforward decoupling current controller, from the q-a...

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Abstract

The invention discloses a memory motor control method based on parameter identification. In the method, an active disturbance rejection current controller based on feedforward decoupling is designed, and combined with the least square method, the permanent magnet flux linkage and dq-axis inductance of the memory motor are identified online. ; Based on the identified inductance parameters, the maximum torque-current ratio and field-weakening control of the memory motor under different magnetization states and the switching algorithm between the two control methods are realized, and the load demagnetization effect under high magnetization state is considered; at the same time, according to The magnetization control module is designed for the identified permanent magnet flux linkage; the control method proposed by the present invention can improve the control performance and operating efficiency through the online identification method for the characteristics of large changes in memory motor parameters.

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] Memory Motor (MM), compared with ordinary permanent magnet synchronous motor, its permanent magnet flux linkage is variable, which has been concerned and recognized by scholars at home and abroad. Usually, a magnetizing current pulse is applied at low speed, so that the motor is in a high magnetization state and the torque output capability is improved; in the high-speed running stage, a demagnetizing current pulse is applied to make the motor in a low magnetization state, broaden the speed regulation range, and reduce the field weakening loss. . [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 (FW) based on fixed parameters are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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