Field weakening control method, device and motor

A field-weakening control and current technology, which is applied in the direction of controlling generators, electromechanical transmissions, and electromechanical brakes, etc., can solve the problems of limited speed-up effects of field-weakening control methods, achieve improved field-weakening effects, improve drive performance, The effect of high speed

Active Publication Date: 2021-08-27
ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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Problems solved by technology

[0003] In order to solve the technical problem that the speed-up effect of the field-weakening control method in the prior art is limited and it is difficult to meet the actual needs, the present invention provides a field-weakening control method, device and motor for a motor with a higher field-weakening speed-up effect

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  • Field weakening control method, device and motor
  • Field weakening control method, device and motor
  • Field weakening control method, device and motor

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[0037] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as there is no conflict with each other.

[0038] The motor field-weakening control method provided by the present invention can be used to control drive motors such as permanent magnet synchronous motors and DC brushless motors, perform field-weakening control on the motors, and increase the speed of the motors. It should be noted that, in the f...

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Abstract

The invention relates to the technical field of drive motors, and specifically provides a motor field weakening control method, device and motor. A field weakening control method, comprising: obtaining an output value of the q-axis voltage and a set value of the q-axis voltage in a field-weakening state; determining a compensation value of a field-weakening current according to the output value and the set value; The value compensates for the field weakening current. The control method of the present invention improves the field weakening effect of the motor by correcting and compensating the field weakening current on the basis of the existing field weakening method, and further increases the motor speed. performance to meet more demand scenarios.

Description

technical field [0001] The invention relates to the technical field of drive motors, in particular to a motor field weakening control method, device and motor. Background technique [0002] With the development of the new energy vehicle industry, the number of electric vehicles is increasing rapidly. As the core component of electric vehicles, the electric vehicle motor drive control system is the fundamental guarantee for improving the driving performance, driving reliability and stability of electric vehicles. Therefore, the driving Motor is an important research direction of new energy vehicles. For the drive motor, under a certain voltage, the maximum speed (base speed) that the motor can run is difficult to meet the actual demand. Therefore, it is necessary to further increase the speed under the condition of constant power of the motor through other methods, that is, the constant power method to increase the speed. Magnetic field-weakening speed-up is a constant power...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/22
CPCH02P21/0089H02P21/22
Inventor 韩利利李立徐常升唐森
Owner ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
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