An Antiovervoltage Control Scheme for Electrolytic Capacitorless IPMSM Drives Based on Stator Current Vector Orientation

2020 ◽  
Vol 67 (5) ◽  
pp. 3517-3527 ◽  
Author(s):  
Dawei Ding ◽  
Gaolin Wang ◽  
Nannan Zhao ◽  
Guoqiang Zhang ◽  
Dianguo Xu
Keyword(s):  
Stator Current ◽  
Current Vector ◽  
Control Scheme ◽  
Vector Orientation

scholarly journals Stator Current Vector Orientation-Based Backstepping Predictive Control of Torque Ripple Minimization for PMSM with consideration of Electrical Loss

2020 ◽  
Vol 2020 ◽  
pp. 1-17
Author(s):  
Yang Yu ◽  
Leyao Cong ◽  
Xia Tian ◽  
Renjie Xie ◽  
Jianbin Lu
Keyword(s):  
Control Method ◽  
Torque Ripple ◽  
Backstepping Control ◽  
Prediction Algorithm ◽  
Operating Efficiency ◽  
Stator Current ◽  
Current Vector ◽  
Wide Range ◽  
Vector Orientation ◽  
Electrical Loss

Existing research studies on torque ripple suppression mostly ignore the electrical loss of PMSM. However, the electrical loss will not only decrease the operating efficiency but also adversely influence the suppression of torque ripple. This paper attempts to construct a unified framework to suppress torque ripple with consideration of electrical loss. Firstly, a dynamic mathematical model of PMSM under current vector orientation is established with a combination of electrical loss. The constraints that can achieve the control of both torque ripple and electrical loss for PMSM are derived. Then, on the basis of the backstepping control principle, a closed-loop I/f integrative control method under stator current vector orientation is proposed. Meanwhile, this paper also proposes a speed estimation algorithm of PMSM based on the least-squares method to realize wide-range speed identification and an online prediction algorithm for control parameters of backstepping control to enhance the stability of the motor in operation. Both simulations and experiments have been performed to verify the effectiveness of the proposed control method, and the results indicate that torque ripple is suppressed effectively, operating efficiency is significantly improved, and all variables are regulated to track their reference signals correctly and rapidly.

The Rotor Current Orientation Decoupling Control of Doubly-Fed Motor

2013 ◽  
Vol 816-817 ◽  
pp. 375-378
Author(s):  
Xian Biao Chen
Keyword(s):  
Vector Control ◽  
Simulation Experiment ◽  
Decoupling Control ◽  
Operating Condition ◽  
Stator Current ◽  
Current Vector ◽  
Directional Control ◽  
Control Scheme ◽  
Stator Flux ◽  
Doubly Fed

This paper presents a vector control scheme of doubly-fed motor based on stator flux orientation. The scheme achieves decoupled flux and torque component of stator current through directional control of the rotor current vector. It is suitable for both motor sub synchronous operating condition and super synchronous operating condition. Simulation experiment based on the scheme is carried out by Matlab/Simulink and simulating waveforms are given to prove the correctness of the scheme.

Simultaneous suppression of torque ripple and flexible load vibration for PMSM under stator current vector orientation

2019 ◽  
Vol 13 (3) ◽  
pp. 359-369 ◽  
Author(s):  
Yang Yu ◽  
Leyao Cong ◽  
Xia Tian ◽  
Zengqiang Mi ◽  
Jingqiu Tang ◽  
...  
Keyword(s):  
Torque Ripple ◽  
Stator Current ◽  
Current Vector ◽  
Flexible Load ◽  
Vector Orientation

scholarly journals A Parameter Independent Stator Current Space-Vector Reference Frame-Based Sensorless IPMSM Drive Using Sliding Mode Control

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2365
Author(s):  
Mohammadreza Moradian ◽  
Jafar Soltani ◽  
Mohamed Benbouzid ◽  
Abbas Najjar-Khodabakhsh
Keyword(s):  
Sliding Mode Control ◽  
Reference Frame ◽  
Sliding Mode ◽  
Rotor Speed ◽  
Space Vector ◽  
Stator Current ◽  
Mode Control ◽  
Control Scheme ◽  
Stator Flux ◽  
Stator Resistance

In this paper, a sliding mode control is presented for direct torque and stator flux control of interior permanent magnet synchronous motor in a rotor speed sensorless drive system. The control scheme is developed in a specific synchronous rotating reference frame (X-Y) in which the stator current space vector coincides with the direct (X) axis. For this control technique no need to have any knowledge of machine parameters such as stator two-axis inductances, rotor permanent magnets flux linkage, and even the rotor initial position. However, the on-line actual stator resistance value is required to estimate the stator flux components in the stator stationary two-axis reference frame. In this control strategy, two simple methods are described for estimating the rotor speed and stator resistance. Some simulation and experimental results are presented to support the validity and effectiveness of the proposed control scheme.

scholarly journals Forced dynamics control of an actuator with linear PMSM

2009 ◽  
Vol 22 (2) ◽  
pp. 183-195
Author(s):  
Ján Vittek ◽  
Vladimir Vavrús ◽  
Jozef Buday ◽  
Jozef Kuchta
Keyword(s):  
Control System ◽  
Control Method ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Control Law ◽  
Flux Vector ◽  
Stator Current ◽  
Current Vector ◽  
Filtering Effect ◽  
Speed Response

The paper presents design and verification of Forced Dynamics Control of an actuator with linear permanent magnet synchronous motor. This control method is a relatively new one and offers an accurate realization of a dynamic speed response, which can be selected for given application by the user. In addition to this, the angle between stator current vector and moving part flux vector is maintained mutually perpendicular as it is under conventional vector control. To achieve prescribed speed response derived control law requires estimation of an external force, which is obtained from the set of observers. The first observer works in pseudo-sliding mode and observes speed of moving part while the second one has filtering effect for elimination of the previous one chattering. The overall control system is verified by simulations and experimentally. Preliminary experiments confirmed that the moving part speed response follows the prescribed one fairly closely.

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