Current loop control method of permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and control method, which is applied in the direction of motor generator control, electronic commutation motor control, control system, etc., can solve the problems affecting the control accuracy and dynamic response speed of the permanent magnet synchronous motor control system, and improve the Effects of dynamic running performance, dynamic performance improvement, and control accuracy improvement
CN101753091AInactive Publication Date: 2010-06-23重庆红宇精密工业集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
重庆红宇精密工业集团有限公司
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A current loop control method of a permanent magnet synchronous motor relates to the current loop control method of a permanent magnet synchronous motor under the rotor field-oriented synchronous rotating coordinate axes, which comprises: acquiring stator current signal of the motor; detecting the position of the rotor of the motor, and computing the electrical angular velocity and the electrical angle; performing coordinate transformation for the stator current signal of the motor to obtain the d, q axis component of the stator current of the motor; establishing stationary equation set; establishing current loop control equation set; and undergoing coordinate transformation to obtain the switching signal of the motor operation. The invention has the benefit effect that the invention has higher voltage control precision, can meet the requirement of the high precision of different parameter motors within wider velocity range, and has high control precision, good dynamic performance, simple method and wider application range.
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Description

technical field

[0001] The invention relates to a current loop control method of a permanent magnet synchronous motor under a synchronous rotating coordinate axis system oriented by the rotor magnetic field. Background technique

[0002] The key to the vector control of permanent magnet synchronous motor is to effectively control the stator current. The rotor field oriented vector control method is a widely used permanent magnet synchronous motor control method. Its basic principle is to decompose the stator three-phase winding current of the permanent magnet synchronous motor into the synchronous rotation coordinates oriented by the rotor field through the synchronous rotation coordinate transformation. On the shaft system, the d-axis magnetic field current and q-axis torque current of the permanent magnet synchronous motor are obtained by decomposition. The d-axis field current and q-axis torque current of the permanent magnet synchronous motor are decoupled and controlle...

Claims

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