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 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 Implementation of a Fault-Tolerant AC/DC Converter for Permanent Magnet Synchronous Motor Drive Systems

2021 ◽  
Vol 2 ◽  
Author(s):  
Tian-Hua Liu ◽  
Yu-Wei Wang
Keyword(s):  
Fault Detection ◽  
Digital Signal Processor ◽  
Fault Tolerant ◽  
Permanent Magnet Synchronous Motor ◽  
Digital Signal ◽  
Drive System ◽  
Motor Drive ◽  
Bridge Rectifier ◽  
Drive Systems ◽  
And Control

Fault tolerant drive systems have played an increasing role for electric vehicles in order to improve reliability, availability, and to reduce maintenance. For safety reason, a fault-tolerant drive system, which includes some redundant devices and a traditional motor drive system, has been developed. This fault-tolerant system executes real-time fault detection, diagnosis, isolation, and control to make the fault-tolerant drive system operate normally even though some faults have happened. In this paper, an AC/DC converter faults, which includes a single-phase full-bridge rectifier diode fault, a three-phase full-bridge rectifier diode fault, and a DC-link capacitor fault are investigated. The fault-tolerant processes include fault detection, diagnosis, isolation, and control to improve the reliability of the drive system and reduce the disturbances during faulty interval. A digital signal processor, manufactured by Texas Instruments, type TMS320F2808, is used as a control center to achieve the fault tolerant processes. Experimental results validate theoretical analysis to demonstrate the correctness and feasibility of the proposed methods. The proposed method can be easily implemented in industrial products due to its simplicity.

DSP Based Implementation of Hybrid Fuzzy PI Speed Controller for Direct Torque Controlled Permanent Magnet Synchronous Motor Drive

2007 ◽  
Vol 8 (2) ◽  
Author(s):  
Bhim Singh ◽  
B. P. Singh ◽  
Sanjeet Dwivedi
Keyword(s):  
Permanent Magnet ◽  
Digital Signal Processor ◽  
Fuzzy Logic Controller ◽  
Hybrid Control ◽  
Permanent Magnet Synchronous Motor ◽  
Digital Signal ◽  
Synchronous Motor ◽  
Drive System ◽  
Fuzzy Membership Function ◽  
Speed Controller

This paper presents a Digital Signal Processor (DSP) based implementation of Hybrid of Fuzzy Logic Controller (FLC) and Proportional-Integral (PI) speed controller for Direct Torque Controlled (DTC) Permanent Magnet Synchronous Motor (PMSM) drive. The fuzzy membership function is used for hybrid control of these two FLC and PI speed controllers in such a way that at the time of dynamic conditions such as starting, the degree of belonging for FLC speed controller is higher than the PI speed controller and near set point the degree of belonging of PI controller is having higher weightage. The simulation model of the drive system is developed in MATLAB environment with simulink, PSB and FLC toolboxes to analyze the performance of the PMSM drive system. This hybrid speed controller is found suitable for DTC based PMSM drive to maintain the high level of performance while maintaining the excellent response at the time of starting, speed reversal, load perturbation and steady-state operating condition of the drive.

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