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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Computer Science
Jurifa Mat Lazi
Universiti Teknikal Malaysia Melaka
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

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Journal : Indonesian Journal of Electrical Engineering and Computer Science

 1 
Sliding mode control with observer for permanent magnet synchronous machine drives Muhammad Haziq Nashren Razali; Jurifa Mat Lazi; Zulkifilie Ibrahim; Md Hairul Nizam Talib; Fizatul Aini Patakor
Indonesian Journal of Electrical Engineering and Computer Science Vol 25, No 1: January 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v25.i1.pp89-97

Abstract

This paper aims to develop the sliding mode control (SMC) scheme in sensorless permanent magnet synchronous machine (PMSM) drives to replace conventional proportional integral (PI) speed control. The SMC is formulated based on the integral sliding surface of the speed error. And the error is corrected based on the concept of Lyapunov stability. The SMC is designed with the load torque observer so that the disturbance can be estimated as feedback to the controller. The vector control technique which is also known as field-oriented control (FOC) is also used to split the stator current into the magnetic field generating part which is the direct axis and the torque generating part which is the quadrature axis. This can be done by using Park and Clarke transformations. The performance of the proposed SMC is tested under changes in load-torque and without load for different speed commands. The results prove that the SMC produces robust performances under variations of speeds and load disturbances. The effectiveness of the proposed method is verified and simulated by using MATLAB/SIMULINK software.
Non-independent speed control for dual-PMSM drives fed by a single three-leg VSI Jurifa Mat Lazi; Zulkifilie Ibrahim; Md Hairul Nizam Talib
Indonesian Journal of Electrical Engineering and Computer Science Vol 20, No 3: December 2020
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v20.i3.pp1717-1724

Abstract

The objective of this article is to analyze the performances of non-independent speed control of dual-pmsm (permanent magnet synchronize motor) drives by a single three-leg voltage source inverter (VSI) using control of mean and differential torque technique. In general, there are two types of control strategies for dual-motor drives. One is master-slave technique and another one is mean control technique. For mean control technique, this study chooses mean and differential approach for the motors parameters and using average value for the voltage space vector. The advantages of dual-motor drives fed by a single inverter topology are, it can decrease the size and cost compared to the dual-motor drives which used by individual inverter, either in industrial or in traction applications. However, by using a single three-phase inverter, the topology only restricted for the same operating conditions which are at the same speed, same parameters and same direction. The dual-motors are dependent (non-independent) on the other motor. It is can only be tested on different load operation. The analysis is focuses on speed and load variation for dual-PMSM drives considering the forward and reverse operations of the motor. This simulation model is modelled using MATLAB-Simulink.
Fuzzy membership functions tuning for speed controller of induction motor drive: performance improvement Nabil Farah; Md Hairul Nizam Talib; Zulkifilie Bin Ibrahim; Qazwan Abdullah; Ömer Aydoğdu; Jurifa Mat Lazi; Zm Isa
Indonesian Journal of Electrical Engineering and Computer Science Vol 23, No 3: September 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v23.i3.pp1258-1270

Abstract

Fuzzy logic controller (FLC) has gained high interest in the field of speed control of machine drives in both academic and industrial communities. This is due to the features of FLC of handling non-linearity and variations. FLC system consists of three main elements: scaling factors (SFs), membership functions (MFs), and rule-base. Fuzzy MFs can be designed with different types and sizes. For induction motor (IM) speed control, (3x3), (5x5) and (7x7) MFs are the most used MFs sizes, and normally designed based on symmetrical distribution. However, changing the width and peak position of MFs design enhance the performance. In this paper, tuning of MFs of FLC speed control of IM drives is considered. Considering (3x3), (5x5) and (7x7) MFs sizes, the widths and peak positions of these MFs are asymmetrically distributed to improve the performance of IM drive. Based on these MFs sizes, the widths and peak positions are moved toward the origin (zero), negative and positive side that produces a controller less sensitive to the small error variations. Based on simulation and performance evaluations, improvement of 5% in settling time (Ts), 0.5% in rise time and 20% of steady-state improvement achieved with the tuned MFs compared to original MFs.
Co-Authors Ainain Nur Auzani Jidin Azrita Alias Fizatul Aini Patakor Ismadi Bin Bugis M. H. N. Talib Maaspaliza Azri Md Hairul Nizam Talib MD Hairul Talib Md. Liton Hossain MHN Talib Muhammad Haziq Nashren Razali Nabil Farah Nurazlin Mohd Yaakop Ömer Aydoğdu Qazwan Abdullah Tole Sutikno Z. Ibrahim Zm Isa Zulhani Rasin Zulkifilie Bin Ibrahim Zulkifilie Ibrahim