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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) Proceeding of the Electrical Engineering Computer Science and Informatics Indonesian Journal of Electrical Engineering and Computer Science
Nik Rumzi Nik Idris
Universiti Teknologi Malaysia
Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering

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An Exact Model for Rotor Field-Oriented Control of Single-Phase Induction Motors Mohammad Jannati; Ali Monadi; Sajad A. Anbaran; Nik Rumzi Nik Idris; Mohd Junaidi Abdul Aziz
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 7: July 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v12.i7.pp5110-5120

Abstract

This work presents a new Rotor Field-Oriented Control (RFOC) technique for single-phase Induction Motors (IMs). The proposed method uses two rotational transformations, which extract from the steady-state equivalent circuit of single-phase IM. It is proved by using proposed rotational transformations, the single-phase IM asymmetrical equations change into symmetrical equations. In the proposed technique, the assumption of (Mq/Md)2=Lqs/Lds=a2 which is usually used in other FOC of single-phase IMs, is not considered. Performance of the proposed technique is assessed using MATLAB/SIMULINK. Extensive simulation results show the performance and correctness of the proposed method.
Performance numerical evaluation of modified single-ended primary-inductor converter for photovoltaic systems Tole Sutikno; Rizky Ajie Aprilianto; Nik Rumzi Nik Idris; Ahmad Saudi Samosir
International Journal of Electrical and Computer Engineering (IJECE) Vol 13, No 4: August 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v13i4.pp3720-3732

Abstract

Single-ended primary-inductor converter (SEPIC) was considered a good alternative to a DC-DC converter for photovoltaic (PV) systems. The SEPIC converter can operate with an input voltage greater or less than the regulated output voltage, or as a step-up or step-down. As a step-up converter, SEPIC boosts PV voltage to specific levels. However, gain limitation and voltage stress continue to reduce the efficiency of conventional SEPIC converters. Because of this, researchers created a modified SEPIC converter to improve performance. In this paper, six modified SEPIC converters were compared and evaluated. To compare fairly, all modified SEPIC converters are non-isolated and use a single switch. Power simulator (PSIM) software was used to simulate each converter with a BISOL BMO-250 PV module and maximum power point tracking (MPPT) P&O controller. The converter with the highest static voltage gain and lowest duty cycle has been identified. It results in up to ten times voltage increment with a 0.8-duty ratio. All topologies have the same voltage stress, with maximum and minimum values of 30.1 and 29.5 V, respectively. On the other hand, each topology produces different average efficiencies, with the highest and lowest efficiency at 99.5% and 97.2%, respectively.
Co-Authors Ahmad Saudi Samosir Aiman Zakwan Jidin Aiman Zakwan Jidin Ali Monadi Auzani Jidin Auzani Jidin Awang Jusoh Goh Wee Yen Ibrahim Mohd Alsofyani Ibrahim Mohd. Alsofyani Jenn Hwa Wong Low Wen Yao M. Ghanbari Makbul Anwari Mohamed Salem Mohammad Jannati Mohd Hatta Jopri Mohd Junaidi Abdul Aziz Naziha Ahmad Azli Norjulia Mohamad Nordin Nur Huda Ramlan Nuryono Satya Widodo Rizky Ajie Aprilianto Sajad A. Anbaran Sajad Abdollahzadeh Anbaran Sajjad A. Anbaran Seyed Hesam Asgari Siti Nursyuhada Mahsahirun Syamim Sanusi Tole Sutikno Y.A. Alamri Yahya Ahmed Alamri Yonis.M.Yonis Buswig Zulkifli Md. Yusof