scholarly journals Torque Ripple Minimization in PMSM Based on an Indirect Adaptive Robust Controller

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Ruichao Tao ◽  
Jie Ma ◽  
Hui Zhao
Keyword(s):  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Adaptive Robust Control ◽  
Least Square ◽  
Parametric Estimation ◽  
Current Loop ◽  
Recursive Least Square ◽  
Robust Controller ◽  
Adaptation Law ◽  
Torque Ripples

This paper addresses the problem of torque ripple minimization in permanent magnet synchronous motor (PMSM), which plays an important role in modern aerospace industry. Accurate motion control and disturbance compensation are challenging issues of PMSM systems, where the nonlinear disturbances are quite complicated and various uncertainties exist. To overcome these control problems, based on the adaptive robust control (ARC) algorithm, an indirect adaptive robust controller (IARC) with a robust recursive least square (RRLS) adaption law is proposed as a solution. A modified PMSM model which indicates the torque ripple generation is first derived. The IARC in current loop is then described, holding the good tracking performance of ARC algorithm and minimizing the torque ripples while speed tracking. The RRLS adaption law in IARC is synthesized based on modified model and then a correction factor is added to enhance the robustness of this adaptation law. This can enable the better parametric estimation and adaptive compensation to minimize the torque ripples. The stability of the system with the proposed controller is proved. Finally, the effectiveness of the proposed method is demonstrated by the simulation results.

scholarly journals Comparative Evaluation of Control Techniques of PMSM Drive in Automotive Application

2021 ◽  
Vol 2062 (1) ◽  
pp. 012024
Author(s):  
Rakesh Shriwastava ◽  
Satayjit Deshmukh ◽  
Ashwini Tidke ◽  
Mohan Thakre
Keyword(s):  
Comparative Evaluation ◽  
Control Method ◽  
Simulation Analysis ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Automotive Application ◽  
Control Techniques ◽  
Snubber Circuit ◽  
Low Torque ◽  
Torque Ripples

Abstract This paper deal with comparative evaluation of control techniques of Permanent magnet synchronous motor (PMSM) drive in automotive application is investigated. The FOC, DTC and proposed SVM-DTC with LC-Snubber circuit are presented. In SVM-DTC, this reduces low torque ripple by using space vector modulated. The parameters of FOC, DTC and proposed SVM-DTC with LC-Snubber method are studied by simulation. The simulation analysis of control method is investigated in terms of speed, current and torque ripples It was observed that the proposed method upgrade the performance of PMSM drive in respect to speed, current ripples, and torque responses

A power perturbation-based MTPA control with disturbance torque observer for IPMSM drive system

2018 ◽  
Vol 40 (10) ◽  
pp. 3179-3188 ◽  
Author(s):  
Faa-Jeng Lin ◽  
Shih-Gang Chen ◽  
Ying-Tsen Liu ◽  
Shih-Yao Chen
Keyword(s):  
Digital Signal Processor ◽  
Feedforward Control ◽  
Permanent Magnet Synchronous Motor ◽  
Drive System ◽  
Least Square ◽  
Experimental Results ◽  
Recursive Least Square ◽  
Control Approach ◽  
Torque Observer ◽  
Disturbance Torque

A novel maximum torque per ampere (MTPA) method based on power perturbation for a field-oriented control (FOC) interior permanent magnet synchronous motor (IPMSM) drive system is proposed in this study. The proposed MTPA method is designed based on the power perturbation resulting from the signal injection in the current angle. Moreover, the influence of current and voltage harmonics to the MTPA control can be effectively eliminated. Furthermore, to enhance the robustness of the control system, a real-time design scheme for the integral–proportional (IP) speed controller using a recursive least square (RLS) estimator with disturbance torque feedforward control is developed. The disturbance torque is obtained from an improved disturbance torque observer with online parameters updated. Finally, some experimental results using an IPMSM drive system based on a low-price digital signal processor (DSP) are presented. From the experimental results, the proposed control approach can guarantee the control performance of a speed loop even under a cyclic fluctuating load.

scholarly journals Compensation for Inverter Nonlinearity in Permanent Magnet Synchronous Motor Drive and Effect on Torsional Vibration of Electric Vehicle Driveline

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2542 ◽  
Author(s):  
Weihua Wang ◽  
Wenkai Wang
Keyword(s):  
Permanent Magnet ◽  
Torsional Vibration ◽  
Permanent Magnet Synchronous Motor ◽  
Harmonic Component ◽  
Torque Ripple ◽  
Voltage Reference ◽  
Permanent Magnet Synchronous Motors ◽  
Current Harmonics ◽  
Motor Torque ◽  
Torque Ripples

Permanent magnet synchronous motors (PMSMs) with inverters are widely used in electric vehicles (EVs). However, current harmonics caused by the nonlinearity of the inverter generate torque ripples and give rise to torsional vibration in the vehicle driveline. This paper proposes a new compensation method to suppress the torque ripples. This method extracts the 6th-order harmonic component online from the d-axis and q-axis currents with the approximate Fourier transform, and adopts a harmonic current PI regulator to calculate compensation voltage, which is added to the voltage reference to compensate the nonlinearity of the inverter. After correcting the current distortion and improving the motor torque smoothness, the torsional vibration of the driveline caused by the motor pulsating torque is reduced. According to the simulation results, the 6th-order of motor torque ripple and the torsional vibration response is reduced about 26–28%, which confirms the validity of the proposed strategy. The proposed method does not need any additional hardware and can be implemented broadly in PMSM drives.

Study on 12-Sector Control Based Torque Ripple Reduction in DTC System

2012 ◽  
Vol 433-440 ◽  
pp. 233-237
Author(s):  
Hong Ge Zhao ◽  
Jing Wei Zhu ◽  
Yin Hai Fan ◽  
Xiao Chen Zhang
Keyword(s):  
Electric Propulsion ◽  
Permanent Magnet Synchronous Motor ◽  
Direct Torque Control ◽  
High Capacity ◽  
Torque Ripple ◽  
Torque Control ◽  
Ripple Reduction ◽  
Function Relationship ◽  
Torque Ripples ◽  
Zero Voltage

This paper is based on permanent magnet synchronous motor Direct Torque Control system as research background. It analyzes the zero voltage vector’s function of regulating electromagnetic torque and provides function relationship curves graph. Based on that, the strategy of 12-sector control based regional interpolation of zero voltage vector is proposed and is applied in the Marine Electric Propulsion System of high-capacity parameters as the operating environment, then is tested. The result shows that the strategy effectively reduces torque ripples as the theoretical analysis. Finally, the application of strategy of regional interpolation is systematically summarized.

scholarly journals Artificial Neural Networks Models Based on ARX and State Space Forms and Adaptive Control PID/LQR of Systems Based on Peltier Cells

2021 ◽  
Vol 9 (11) ◽  
pp. 455-477
Author(s):  
Denis Fabricio Sousa De Sá ◽  
João Viana Fonseca Neto
Keyword(s):  
Neural Networks ◽  
Artificial Neural Networks ◽  
Control Strategies ◽  
Least Square ◽  
Parametric Estimation ◽  
Training Algorithms ◽  
Recursive Least Square ◽  
Space Forms ◽  
Linear Regulator ◽  
Artificial Neural

To improve the performance of a thermal plant based on Peltier cell actuators, an online parametric estimation via artificial neural networks and adaptive controller is presented. The control actions  are based on adaptive digital controller and an adaptive quadratic linear regulator approaches. The Artificial neural networks topology is based on ARX and NARX models, and its training algorithms, such as accelerated backpropagation and recursive least square. The Control strategies are design-oriented to adaptive digital PID controller and quadratic linear regulator framework. The proposal is evaluated on  temperature control of an object that is inside of a chamber.

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