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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Reconfigurable and Embedded Systems (IJRES) TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Computer Science
Auzani Jidin
Universiti Teknikal Malaysia Melaka (UTeM)
Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering

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A simple duty cycle control technique to minimize torque ripple in open-end winding induction motor Muhammad Zaid Aihsan; Auzani Jidin; Azrita Alias; Tole Sutikno
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 14, No 2: June 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v14.i2.pp1270-1279

Abstract

Modern electric vehicles (EVs) that drive an induction motor (IM) fed by a traction inverter are fast gaining popularity due to their simple configuration and robustness. The direct torque control (DTC) technique is one of the best control methods to drive the IM, especially in open-end winding configurations, as it offers more voltage vectors. However, the existence of hysteresis controllers and improper switching technique causes larger torque ripples that leads to variable switching frequency. The study will be focused on the open-end winding induction motor where the direct current (DC) power is fed from both sides of the stator windings using the dual inverter configuration. To minimize the torque ripples, a simple switching technique using the duty cycle control method is proposed by injecting a high-frequency square wave into the default inverter switching status to form the new pattern of voltage vectors. The effectiveness of the proposed technique is tested through MATLAB/Simulink software and validated experimentally with a lab-scale setup using a dSPACE controller. The findings show that the proposed method reduces torque ripple by over 50% while keeping the DTC's simple structure.
Evaluation of CHB MLI based shunt APF using low pass filter and self-tuning filter Musa Yusup Lada; Mohd Amran Mohd Radzi; Jasronita Jasni; Hashim Hizam; Auzani Jidin; Syahrul Hisham Mohamad
Indonesian Journal of Electrical Engineering and Computer Science Vol 31, No 3: September 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v31.i3.pp1274-1285

Abstract

The increasing demand for high-rating power supply in the distribution system causes the conventional inverter topology, six step voltage source inverter (SSVSI) unsuitable for being applied as active power filter (APF). Multilevel inverter (MLI) is generally the best suitable inverter for APF, but not all types of MLI can be used for high-voltage applications. Among the MLIs topology, cascaded H-bridge (CHB) is the best choice since it can produce output voltage more than twice the amount of DC source. Moreover, CHB MLI topology uses fewer power devices and is simple in design. Low pass filter (LPF) is a common method used for harmonic extraction in this controller. However, this method faces various problems, such as an additional need for phase lock loop (PLL) algorithm and slow transient and steady-state responses. Therefore, self-tuning filter (STF) is introduced as a new filtering method to overcome this problem. This paper evaluates CHB MLI's performance for APF using STF as a harmonic extraction. The model was developed and verified in MATLAB/Simulink. The results show that harmonic extraction using STF performs better total harmonic distortion (THD) than conventional LPF. Nevertheless, both algorithms produce THD below 5%, defined as the permissible value stated in IEEE 519.
Co-Authors Abdul Halim Mohd Yatim Aiman Zakwan Jidin Ali Monadi Azrita Alias Azziddin M. Razali Goh Wee Yen Hashim Hizam Jasronita Jasni Kasrul Abdul Karim Logan Raj Lourdes Victor Raj Mohd Amran Mohd Radzi Mohd Hatta Jopri Mohd Luqman M. Jamil Mohd Luqman Mohd Jamil Muhammad Zaid Aihsan Musa Yusup Lada Nik Rumzi Nik Idris Nik Rumzi Nik Idris Nor Aishah Md Zuki Nor Azizah Mohd Yusoff Nor Azizah Yusoff Nurfaezah Abdullah Nuryono Satya Widodo R. Sundram Raja Nor Firdaus Kashfi Raja Othman Siti Azura A. Tarusan Syahrul Hisham Mohamad Tole Sutikno Zuraidi Md Tahir