Analysis and Simulation of Low Speed Sensorless Vector Control with Two Current Signal Injection Schemes

2013 ◽  
Vol 722 ◽  
pp. 361-368
Author(s):  
Yu Dong Li ◽  
Bo Zhou ◽  
Ying Liu ◽  
Cheng Liang Zhao
Keyword(s):  
Vector Control ◽  
Permanent Magnet Synchronous Motor ◽  
Low Frequency ◽  
Simulation Models ◽  
Position Estimation ◽  
Estimation Methods ◽  
Current Signal ◽  
Rotor Position ◽  
Sensorless Vector Control ◽  
Signal Injection

Two current signal injection methods, the fluctuating high frequency (HF) current signal injection and low frequency (LF) current signal injection, were discussed. The basic principles of rotor position self-sensing using these current signal injection and the key techniques in implementation were presented and the simulation models for sensorless vector control systems of a permanent magnet synchronous motor (PMSM) were established using two proposed rotor position estimation methods. Comparative simulation study of the fluctuating HF current signal injection and LF current signal injection was investigated, and draw the conclusions that the saliency-tracking scheme using fluctuating HF current signal injection possesses simpler configuration and better speed-adjustable performance both in static and dynamic.

Sensorless Control of PMSM Based on Low-Frequency Current Signal Injection in the Direct Axis at Low and Zero Speed

2011 ◽  
Vol 143-144 ◽  
pp. 103-107
Author(s):  
Yu Dong Li ◽  
Xiao Wei Wang ◽  
Wei Hu
Keyword(s):  
Control Method ◽  
Sensorless Control ◽  
Permanent Magnet Synchronous Motor ◽  
Low Frequency ◽  
Voltage Response ◽  
Current Response ◽  
Current Signal ◽  
Rotor Position ◽  
Signal Injection ◽  
Simulation Results

A novel sensorless control method of permanent magnet synchronous motor (PMSM) based on low frequency (LF) current signal injection is proposed in this paper. A LF sinusoidal current signal is superimposed into the estimated d-axis, and the corresponding voltage response and current response are detected to estimate the rotor speed and the rotor position. This method doesn't rely on the non-ideal features but just the fundamental model of PMSM. As a result, the introduced method can be applied to not only IPMSM, but also to SPMSM. Theoretical analysis and simulation results are carried out. The simulation results indicate that the rotor position and speed can be obtained exactly at low and zero speed. The approach ensures good dynamic and static performances, and can realize accurate position servo control.

Sensorless Control of SPMSM Based on High-Frequency Current Signal Injection in the Direct Axis at Low and Zero Speed

2011 ◽  
Vol 383-390 ◽  
pp. 2856-2861 ◽  
Author(s):  
Ying Feng ◽  
Bo Zhou ◽  
Ying Liu ◽  
Shuai Li
Keyword(s):  
High Frequency ◽  
Control Method ◽  
Sensorless Control ◽  
Permanent Magnet Synchronous Motor ◽  
Current Signal ◽  
Rotor Position ◽  
Position Servo Control ◽  
Accurate Position ◽  
Signal Injection ◽  
Sinusoidal Current

A novel sensorless control method of surface-mounted permanent magnet synchronous motor (SPMSM) based on high frequency (HF) current signal injection is proposed in this paper. A HF sinusoidal current signal is superimposed into the estimated d-axis, and the rotor position can be demodulated after q-axis voltage is regulated, which is relative to error angle. Ultimately sensorless control can be achieved. Theoretical analysis and simulation validation are carried out. The simulation results indicate that the rotor position and speed can be obtained exactly at low and zero speed. The approach ensures good dynamic and static performances, and can realize accurate position servo control.

Design and Implementation of Sensorless Vector Control System for Permanent Magnet Synchronous Motor

2014 ◽  
Vol 960-961 ◽  
pp. 1183-1188
Author(s):  
Sheng Wen Fan ◽  
Dong Liu ◽  
Zheng Xi Li ◽  
Ze Ting Wang ◽  
Peng Wang
Keyword(s):  
Control System ◽  
Vector Control ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Estimation Method ◽  
Synchronous Motor ◽  
Position Estimation ◽  
Experimental Result ◽  
Sensorless Vector Control ◽  
Vector Control System

This paper will introduce the sensorless vector control system of permanent magnet synchronous motor,it adopts the PLL structure to correct motor back electromotive force for the motor rotor speed/position estimation and vector control algorithm to realize speed and current loop control of PMSM.This paper established a mathematical model of the PMSM,design of system software and hardware,the principle of speed/position estimation method and simulation of system in Matlab/Simulink.Finally,it introduces the experiment of whole system in TMS320F2808-based PMSM experiment platform,the simulation and experimental result verify feasibility,fast response and practicability of the system.

Sensor-based and Sensorless Vector Control of Permanent Magnet Synchronous Motor Drives: A Comparative Study

2020 ◽  
Vol 13 (2) ◽  
pp. 276-284
Author(s):  
Shweta Singh ◽  
Amar N. Tiwari ◽  
Sri N. Singh
Keyword(s):  
Vector Control ◽  
Permanent Magnet ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Position Estimation ◽  
Estimation Accuracy ◽  
Parameter Mismatch ◽  
Rotor Position ◽  
Control Scheme

Background: Speed and rotor position estimation is mandatory for vector control scheme of Permanent Magnet Synchronous Motor (PMSM). Methods: The estimation accuracy of Non-adaptive (Open loop) methods degrades as mechanical speed reduces. The system becomes more robust against parameter mismatch and signal noises by employing adaptive observers for estimation of speed and position. Sensorless scheme adopted for estimating the PMSM rotor position based on its performance which eliminates the need for speed sensors which are usually required in such control applications. Results: To achieve this goal, a Space Vector Pulse Width Modulation (SVPWM) control scheme is applied to work in conjunction with a vector control PMSM drive using Simulink. The PI controller uses from estimated speed feedback for the speed sensorless control of PMSM. Conclusion: In this paper, a comprehensive analysis of sensor-based and sensorless based on Sliding Mode Observer (SMO) techniques for vector control of PMSM is presented with regards to the steadystate and dynamic performance robustness against parameter sensitivity, stability and computational complexity. The control scheme is simulated in the MATLAB/Simulink software environment.

scholarly journals Position Estimation of a PMSM in an Electric Propulsion Ship System Based on High-Frequency Injection

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 276 ◽  
Author(s):  
Hongfen Bai
Keyword(s):  
Permanent Magnet ◽  
High Frequency ◽  
Electric Propulsion ◽  
Permanent Magnet Synchronous Motor ◽  
Estimation Algorithm ◽  
Synchronous Motor ◽  
Position Estimation ◽  
Second Order ◽  
Application Range ◽  
Rotor Position

To improve the operating performance of electric propulsion ships, the permanent magnet synchronous motor is commonly used as the propulsion motor. Additionally, position estimation without sensors can further improve the application range of the propulsion motor and the estimated results can represent the redundancy of measured values from mechanical sensors. In this paper, the high-frequency (HF) injection algorithm combined with the second-order generalized integrator (SOGI) is presented on the basis of analyzing the structure of the electric propulsion ship and the vector control of the motors. The position and rotor speed were estimated accurately by the approximate calculation of q-axis currents directly related to the rotor position. Moreover, the harmonics in the estimated position were effectively reduced by the introduction of the second-order generalized integrator. Then, the rotor position estimation algorithm was verified in MATLAB/Simulink by choosing different low speeds including speed reversal, increasing speed, and increasing load torque. Finally, the correctness of the proposed improved high-frequency injection algorithm based on the second-order generalized integrator was verified by the experimental propulsion permanent magnet synchronous motor (PMSM) system at low speed.

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