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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Indonesian Journal of Electrical Engineering and Computer Science

Awang Jusoh

Universiti Teknologi Malaysia

Author-ID : 2376687

Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering

Published : 27 Documents Claim Missing Document

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Enhancing the performance of cascaded three-level VSC STATCOM by ANN controller with SVPWM integegration Mohamad Milood Almelian; Izzeldin. I. Mohd; Abu Zaharin Ahmad; Mohamed Salem; Mohamed A. Omran; Awang Jusoh; Tole Sutikno
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 5: October 2019
Publisher : Institute of Advanced Engineering and Science

This article presents a cascaded three-level voltage source converter (VSC) based STATCOM employing an artificial neuron network (ANN) controller with a new simple circuit of space vector pulse width modulation (SVPWM) technique. The main aim of utilizing ANN controller and SVPWM technique is to minimize response time (RT) of STATCOM and improve its performance regard to PF amplitude, and total harmonic distortion (THD) of VSC output current during the period of lagging/leading PF loads (inductive/capacitive loads). The performance of STATCOM is tested using MATLAB/SIMULINK in IEEE 3-bus system. The simulation results clearly proved that the STATCOM with intelligent controller is more efficient compared to a conventional controller (PI controller), where ANN enables the voltage and current to be in the same phase rapidly (during 1.5 cycles) with THD less than 5%.

Extended family of DC-DC Quasi-Z-Source converters Muhammad Ado; Awang Jusoh; Tole Sutikno
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 6: December 2019
Publisher : Institute of Advanced Engineering and Science

The family of DC-DC q-ZSCs is extended from two to three classes and four to six members. All the members were analyzed based on efficient duty ratio range (RDeff) and general duty ratio range (RDgen). Findings showed that similar to the traditional buck-boost converter (BBC), each of the topologies is theoretically capable of inverted buck-boost (BB) operation for the RDgen with additional advantages but differed according to class in how the gains are achieved. The new topologies have advantages of BB capability at the RDeff, continuous and operable duty ratio range with unity gain at contrary to existing topologies where undefined or zero gain is produced. Potential applications of each class were discussed with suitable topologies for applications such as fuel cells, photovoltaic, uninterruptible power supply (UPS), hybrid energy storage and load levelling systems identified.

Dynamic model of A DC-DC quasi-Z-source converter (q-ZSC) Muhammad Ado; Awang Jusoh; Abdulhamid Usman Mutawakkil; Tole Sutikno
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 3: June 2019
Publisher : Institute of Advanced Engineering and Science

Two quasi-Z-source DC-DC converters (q-ZSCs) with buck-boost converter gain were recently proposed. The converters have advantages of continuous gain curve, higher gain magnitude and buck-boost operation at efficient duty ratio range when compared with existing q-ZSCs. Accurate dynamic models of these converters are needed for global and detailed overview by understanding their operation limits and effects of components sizes. A dynamic model of one of these converters is proposed here by first deriving the gain equation, state equations and state space model. A generalized small signal model was also derived before localizing it to this topology. The transfer functions (TF) were all derived, the poles and zeros analyzed with the boundaries for stable operations presented and discussed. Some of the findings include existence of right-hand plane (RHP) zero in the duty ratio to output capacitor voltage TF. This is common to the Z-source and quasi-Z-source topologies and implies control limitations. Parasitic resistances of the capacitors and inductors affect the nature and positions of the poles and zeros. It was also found and verified that rather than symmetric components, use of carefully selected smaller asymmetric components L1 and C1 produces less parasitic voltage drop, higher output voltage and current under the same conditions, thus better efficiency and performance at reduced cost, size and weight.

Co-Authors Abba Lawan Bukar Abdulhamid Usman Mutawakkil Abu Zaharin Ahmad Abu Zaharin Ahmad Abu Zaharin Ahmad Azhar Bin Khairuddin Basilah Ismail Bazilah Ismail Bazilah Ismail Bazilah Ismail Budi Santosa Chee Wei Tan F. A. Ismail F. N. Hanafi Firdaus Ramli Hendril Satrian Purnama Ibrahim Alhamrouni Ibrahim Alhamrouni Ibrahim Alhamrouni Ibrahim Alhamrouni Ibrahim Alhamrouni Ibrahim Alhamrouni Ibrahim Alhamrouni Ibrahim Alhamrouni Iftikhar Abid Izzeldin I Mohd Izzeldin. I. Ibrahim Izzeldin. I. Mohd Jamilatul Lilik Lilik J. Awalin M. A Alif M. A. Hairullah M. Iskandar M. K. Rahmat M. R. Bin Hamzah Mohamad M Almelian Mohamad Milood Almelian Mohamad Milood Almelian Mohamed A Omran Mohamed A. Omran Mohamed Asghaiyer Omran Mohamed Salem Mohamed Salem Mohammed Salheen Alatshan Mohammed Salheen Alatshan Muhammad Ado Muhammad Nubli Zulkifli N. S. Omar N.Rumzi N. Idris Nadia H. A. Rahman Nik Din Muhamad Nik Rumzi Nik Idris Nor Hidayah Abdul Kahar Nurul Hanis Azhan Nuryono Satya Widodo Rasyid Ismail Razman Ayop Rizky Ajie Aprilianto Rozana Alik Saad Mekhilef Saad Mekhilef Syed Norazizul Syed Nasir T. Sutikno Tan Kar Guan Tarmo Korõtko Tole Sutikno Yonis.M.Yonis Buswig Younes Zahraoui Younes Zahraoui

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