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Permanent magnet synchronous motor control method based on super-twisted sliding-mode observer

A technology of permanent magnet synchronous motor and sliding mode observer, which is applied in observer control, motor control, AC motor control, etc., can solve the problems of low stability rotor position and speed, low precision, etc., and achieve small chattering, Smooth speed and torque curve effect

Pending Publication Date: 2022-06-28
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a permanent magnet synchronous motor control method based on a super-twisted sliding mode observer, to solve the back electromotive force obtained by the traditional sliding mode observer, as well as the low precision and low stability of the rotor position and speed, etc. question

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  • Permanent magnet synchronous motor control method based on super-twisted sliding-mode observer
  • Permanent magnet synchronous motor control method based on super-twisted sliding-mode observer
  • Permanent magnet synchronous motor control method based on super-twisted sliding-mode observer

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Embodiment Construction

[0028] The specific embodiments of the present invention are further described below with reference to the accompanying drawings.

[0029] figure 1 It is a block diagram of a permanent magnet synchronous motor control system based on a super twisted sliding mode observer. figure 1 , the three-phase current and three-phase voltage of the motor are converted into U through the Clark module α , U β ,i α ,i β ; in the SuperTwisted Sliding Mode module, the input is U α , U β ,i α ,i β , the output is the rotor position angle θ e and angular velocity ω e ;The input of the speed PI is the error n between the given speed and the actual speed ref -n, the output is the q-axis given current Through the Park transform module and the rotor position angle θ e Turn the three-phase current of the motor into the actual d, q-axis current i d ,i q ; d, q axis current module input is given d, q axis current i d * and the actual d, q axis current i d ,i q The error, the output...

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Abstract

The invention discloses a permanent magnet synchronous motor control method based on a super-twisted sliding-mode observer. A mathematical model is established according to a motor under an alpha-beta two-phase coordinate system, and a super-twisted sliding-mode observer is designed to replace a traditional sliding-mode observer, so that a counter electromotive force with a better effect is obtained; an arc tangent method with phase compensation is designed to replace a traditional arc tangent method to obtain more accurate rotor information. And the overall control effect is improved.

Description

technical field [0001] The invention relates to the field of motor control, in particular to a method for controlling a permanent magnet synchronous motor based on a super-torsion sliding mode observer. Background technique [0002] With the wide application of permanent magnet synchronous motors in military, industrial and other fields, in some occasions with high reliability requirements such as electric vehicles, ship propulsion, aerospace, etc., a stable and reliable motor drive system is particularly important. During the operation of the motor, the motor will often be subject to load disturbance and external disturbance; due to factors such as vibration during the operation of the motor, the sensitivity of the position sensor will also decrease, resulting in a decrease in the reliability of the motor operation. Aiming at the high performance requirement of the sensorless control of the permanent magnet synchronous motor, the invention proposes a control method of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/12H02P25/022H02P6/10
CPCH02P23/12H02P25/022H02P6/10H02P2207/05
Inventor 肖芳姜大力
Owner HARBIN UNIV OF SCI & TECH