Sensorless control of PMSM in high speed range with iterative sliding mode observer

Author(s):  
Kye-Lyong Kang ◽  
Jang-Mok Kim ◽  
Keun-Bae Hwang ◽  
Kyung-Hoon Kim

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 175302-175312 ◽  
Author(s):  
Abebe Teklu Woldegiorgis ◽  
Xinglai Ge ◽  
Songtao Li ◽  
Mannan Hassan






Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 607
Author(s):  
Youssouf Mini ◽  
Ngac Ky Nguyen ◽  
Eric Semail ◽  
Duc Tan Vu

This two-part study proposes a new sensorless control strategy for non-sinusoidal multiphase permanent magnet synchronous machines (PMSMs), especially integrated motor drives (IMDs). Based on the Sliding Mode Observer (SMO), the proposed sensorless control strategy uses the signals (currents and voltages) of all fictitious machines of the multiphase PMSMs. It can estimate the high-accuracy rotor positions that are required in vector control. This proposed strategy is compared to the conventional sensorless control strategy that applies only current and voltage signals of the main fictitious machine, including the fundamental component of back electromotive force (back EMF) of non-sinusoidal multiphase PMSMs. Therefore, in order to choose an appropriate sensorless control strategy for the non-sinusoidal multiphase PMSMs, these two sensorless control strategies will be highlighted in terms of precision with respect to rotor position and speed estimation. Simulations and the experimental results obtained with a non-sinusoidal seven-phase PMSM will be shown to verify and compare the two sensorless control strategies. In this part of the study (part I), only sensorless control in the medium and high-speed range is considered. Sensorless control at the zero and low-speed range will be treated in the second part of this study (part II).



2014 ◽  
Vol 986-987 ◽  
pp. 1134-1137 ◽  
Author(s):  
Xiao Dong Wang ◽  
Gang Liu

In sensorless vector control of permanent magnet synchronous motor, it is necessary to achieve an accurate estimate of the motor speed and position of the rotor. Traditional sliding mode observer algorithm has the inherent chattering problem which reduces accuracy. The Sigmoid function was used to replace the sign function in the traditional sliding mode observer as the switching control function to cancel the filter and phase compensation links. A new sliding mode observer was designed and its stability was proved. High-speed permanent magnet synchronous motor simulation and experimental results show: the new modified sliding mode observer based on Sigmoid function can eliminate the severe buffeting of the traditional sliding mode observer, achieve the accurate estimation of the rotor speed and position for high-speed permanent magnet synchronous motor to complete a wide range of speed control; the correctness and feasibility of the sensorless control strategy based on this method is verified.



2014 ◽  
Vol 494-495 ◽  
pp. 1401-1404 ◽  
Author(s):  
Hua Cai Lu ◽  
Juan Ti ◽  
Lu Lu Sun ◽  
Li Sheng Wei

In order to achieve sensorless control for permanent magnet linear synchronous motor (PMLSM) direct drive system, speed and position of the motor must be estimated. A new high speed sliding mode observer (SMO) is proposed for a PMLSM based on the sliding mode variable structure theory. A Sigmoid function is used for the SMO as a switching function of the control law, eliminating sliding mode chattering and improving its response rate. Simulation results show that the proposed SMO based on Sigmoid function is capable of estimating speed and position of the motor accurately and rapidly, and the proposed PMLSM sensorless control system has a good dynamic response.



Sign in / Sign up

Export Citation Format

Share Document