Analysis of Torque Ripple Caused by Current Signal Injection on the Maximum Torque Control Frame for Sensorless Control

2010 ◽  
Author(s):  
Takumi Ohnuma ◽  
Shinji Doki ◽  
Shigeru Okuma
Keyword(s):  
Sensorless Control ◽  
Torque Ripple ◽  
Torque Control ◽  
Current Signal ◽  
Maximum Torque ◽  
Signal Injection

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.

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.

Sign in / Sign up

Export Citation Format

Share Document