Method and device for controlling speed of permanent-magnet synchronous motor
A permanent magnet synchronous motor, speed control technology, applied in the direction of motor generator control, AC motor control, control of electromechanical transmission devices, etc., can solve problems such as large speed fluctuations
Active Publication Date: 2015-06-03
SHANDONG UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to provide a permanent magnet synchronous motor speed control method and device to solve the problem of large speed fluctuations under load disturbance in the permanent magnet synchronous motor speed control, so as to improve the energy efficiency of the permanent magnet synchronous motor and reduce motor noise
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0047] The specific technical solutions of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The structural block diagram of the permanent magnet synchronous motor speed control method provided by the embodiment of the present invention, such as image 3 As shown, the load torque observer and its feedforward controller are designed on the basis of ADRC. The function of feedforward control and the control function of ADRC are used as the reference input of the quadrature axis current loop to carry out Speed control of permanent magnet synchronous motors. Flow chart of the speed control method of the permanent magnet synchronous motor, such as Figure 4 shown, including the following steps:
[0048] S101, obtain the rotor position and speed of the permanent magnet synchronous motor, and detect the rotor position of the permanent magnet synchronous motor through a photoelectric encoder , and calculate t...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method and a device for controlling speed of a permanent-magnet synchronous motor. The method includes that an active-disturbance-rejection control technology is adopted for a speed ring, speed setting and a speed detection value are taken as input of a first-order active-disturbance-rejection controller, a tracking differentiator reasonably arranges a transition process, an extended state observer observes an actual value of rotating speed of the motor, estimates total disturbance of a system and acquires output of the speed ring through a nonlinear state error feedback control ratio, a load torque observer is designed through detection values of a current and the speed, and observed load torque through output of a feedforward controller and the active-disturbance-rejection controller is taken as reference input of a quadrature-axis current. The method carries forward characteristics of overshoot freeness, high disturbance rejection capacity, good robustness and the like of the permanent-magnet synchronous motor in speed control in the active-disturbance-rejection control technology, and compensation is performed on the problem of load disturbance, so that the problem of fluctuation of the rotating speed under the circumstance of load disturbance is improved.
Description
technical field [0001] The invention relates to synchronous motor control technology, in particular to a speed control method and device for a permanent magnet synchronous motor. Background technique [0002] At present, the speed control of permanent magnet synchronous motor is mainly based on vector control technology, and direct torque control has also been applied in some special occasions. The invention is based on The vector control technology, using The structure of the permanent magnet synchronous motor control system based on the vector control technology is as follows: figure 1 As shown, the current of A and B two phases is obtained through the current sensor, and the direct axis current is obtained through CLARKE and PARK transformation and quadrature current , as the current feedback value of the two current loops; in addition, the position and speed of the rotor are calculated by the encoder, and the position of the rotor is used for PARK and its inverse...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/05H02P21/14H02P27/06
Inventor 王松许庆阳张立赵瑞杰崔晓光
Owner SHANDONG UNIV