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Method and device for controlling permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of motor generator control, electromechanical transmission control, electronic commutation motor control, etc., and can solve the problem that the rotor flux parameters of permanent magnet synchronous motor cannot be identified at the same time, and the control accuracy is not high , Narrow application range and other issues, to achieve the effect of fast calculation speed, high calculation accuracy, and save calibration time

Active Publication Date: 2016-05-18
BYD CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

However, since this method uses a model reference adaptive identification method, it cannot identify the inductance, stator resistance, and rotor flux parameters of the permanent magnet synchronous motor at the same time. Stick-type permanent magnet synchronous motor, narrow application range

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  • Method and device for controlling permanent magnet synchronous motor
  • Method and device for controlling permanent magnet synchronous motor
  • Method and device for controlling permanent magnet synchronous motor

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0034] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicat...

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Abstract

The invention discloses a method of controlling a permanent magnet synchronous motor. The method comprises the following steps: according to d-axis feedback current, q-axis feedback current, d-axis given voltage and q-axis given voltage during a permanent magnet synchronous motor operation process and the rotation speed of the permanent magnet synchronous motor, the stator resistance, the rotor flux, the d-axis inductance and the q-axis inductance of the permanent magnet synchronous motor are identified; according to the identified stator resistance, the rotor flux, the d-axis inductance and the q-axis inductance, a maximum torque per ampere (MTPA) curve for the permanent magnet synchronous motor is calculated; according to the MTPA curve, a motor parameter table is generated; and through querying the motor parameter table, control parameters of the permanent magnet synchronous motor are acquired, and according to the control parameters of the permanent magnet synchronous motor, the permanent magnet synchronous motor is controlled. The permanent magnet synchronous motor control method of the invention can improve the control accuracy and the response speed of the permanent magnet synchronous motor. The invention also discloses a device for controlling the permanent magnet synchronous motor.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a control method for a permanent magnet synchronous motor and a control device for a permanent magnet synchronous motor. Background technique [0002] A parameter identification method of a permanent magnet synchronous motor proposed in the related art is to realize the motor parameter identification by improving the traditional model reference adaptive structure. Model parameter adaptive system) module 1, build a new MRAS module 2, and construct a cascaded model reference adaptive module. [0003] Among them, MRAS module 1 is used to realize the identification of rotor speed, and MRAS module 2 is used to realize the identification of stator resistance and rotor flux linkage. However, since this method uses a model reference adaptive identification method, it cannot identify the inductance, stator resistance, and rotor flux parameters of the permanent magnet synchronous mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00
Inventor 韩罡杜智勇吴小军
Owner BYD CO LTD
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