Prof. Dr. Muhammad Murtadha Othman
Universiti Teknologi MARA (UiTM)
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Academic Career Length
21Years (2006-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications17 March 2023 in IEEE Transactions on Power Electronics
Journal Article
Kamrul HasanMuhammad Murtadha OthmanSMSheikh Tanzim Meraj
Sheikh Tanzim Meraj
Saad MekhilefAAAhmad Farid Bin Abidin
Ahmad Farid Bin Abidin
This article introduces a novel reference current generation technique based on the Savitzky–Golay filter (SGF) for shunt active power filter (SAPF). Although the existing and conventional SAPF can mitigate harmonics under grid disturbances and nonlinear load environments, they have numerous performance deficiencies including computational complexity, average filtration ability, and slow dynamic response. The proposed SAPF based on SGF can generate a harmonic-free fundamental reference current that can eventually improve the overall harmonic profile and performance compared to existing SAPFs. In addition, an SGF-based phase-locked loop (PLL) is introduced to generate reference phases directly from the distorted grid voltages by retaining the fundamental information of the signal. Thus, it does not induce any phase delay or distortions in the output, unlike the conventional PLLs utilized in the SAPFs. Comparative analysis of performance evaluation is carried out with other SAPFs, and the findings represent the principal achievements of this article. This includes a substantial improvement in performance and harmonic profile under transient conditions. The results are further validated through simulation analysis and hardware implementation.
8 August 2022 in IEEE Transactions on Instrumentation and Measurement
Journal Article
Kamrul HasanSMSheikh Tanzim Meraj
Sheikh Tanzim MerajMuhammad Murtadha OthmanMLMolla Shahadat Hossain Lipu
Molla Shahadat Hossain LipuMHM A Hannan
M A HannanKMKashem M. Muttaqi
Kashem M. MuttaqiA phase-locked loop (PLL) based on synchronous reference frame (SRF) is a standard PLL that has a simple construction and performs well under undisrupted grid conditions. However, in imbalanced and harmonically disturbed environments, the fundamental grid voltage characteristics deteriorate greatly. Integrating a variety of filters in the control algorithm has been suggested as a solution to address this issue. An optimal low-pass filter characteristic can be achieved with the Savitzky–Golay filter (SGF), which is a zero-phase smoothing filter. The primary objective of this article is to offer a new small-signal design of SGF-based filtration in the SRF-PLL. Using this model, a researcher can easily evaluate the SGF-PLL’s behavior and stability condition. A comparative analysis on performance evaluation is carried out with other PLLs, and the findings represent the principal achievements of this article. This includes a substantial improvement in dynamic response and harmonic profile under transient conditions because of SGF’s superior filtration ability, which is obtained through the convolution process. Moreover, the results are also free of any unnecessary phase delay or distortions due to SGF’s zero-phase filtering characteristics. The results are further validated through mathematical analysis and hardware implementation.
8 February 2025 in International Journal of Hydrogen Energy
Journal Article
MAMasoud Ahmadipour
Masoud Ahmadipour
Hussein RidhaZAZaipatimah Ali
Zaipatimah Ali
ZZZhao Zhining
Zhao Zhining
MAMohsen Ahmadipour
Mohsen Ahmadipour
VRVigna K. Ramachandaramurthy
Vigna K. Ramachandaramurthy
+1
19 January 2006 in International Journal of Electrical Power & Energy Systems
Journal Article
1 June 2013
Conference Paper
AGAmir Ghaedi
Amir Ghaedi
AAAli Abbaspour
Ali AbbaspourMFMahmud Fotuhi-Firuzabad
Mahmud Fotuhi-FiruzabadMMMoein Moeini-Aghtaie
Moein Moeini-AghtaieMuhammad Murtadha OthmanVariability and uncertainty of wind and photovoltaic (PV) generations greatly influence technical and financial aspects of power systems. This paper examines the potential impacts of large-scale wind and PV farms on reliability level of composite generation and transmission systems. At first, reliability models of renewable-based units are developed. In these models, both component failure rates and uncertainty nature of renewable resources are taken into account. Using the proposed technique, the multi-state analytical models of a wind farm placed in Manjil and a PV farm placed in Jask both in Iran are extracted. Then, reliability studies of high renewable-energies penetrated power system at Hierarchical Level II (HLII) based on the state enumeration method taking into account the multi-state models of renewable-based units are completely addressed. The proposed technique is then applied to two well-known modified test systems, i.e. (RBTS and IEEE-RTS) and different reliability indices are calculated. The obtained results well confirms the proposed method simplicity and accuracy.
1 April 2022 in Energy Reports
Journal Article
Kamrul HasanMuhammad Murtadha OthmanSMSheikh Tanzim Meraj
Sheikh Tanzim MerajNRNor Farahaida Abdul Rahman
Nor Farahaida Abdul RahmanSNSiti Zaliha Mohammad Noor
Siti Zaliha Mohammad NoorIAIzham Zainal Abidin
Izham Zainal Abidin +1
About Me
Assoc. Prof. Dr. Muhammad Murtadha Othman received his B.Eng. (Hons) from Staffordshire University, England in 1998; M.Sc from Universiti Putra Malaysia in 2000 and PhD from Universiti Kebangsaan Malaysia in 2006. He is currently working as a Director for the UiTM-Solar Energy Research (U-SER) Centre under the project of 50MW LSSPV at Gambang, Pahang. He is also an Associate Professor at the Faculty of Electrical Engineering (FEE), Universiti Teknologi MARA (UiTM), Malaysia. He served as the Head of Department of the Centre for Electrical Power Engineering Studies (CEPES) from February 2009 to December 2010. From 2012 until present he served two times as the Deputy Director for the collaborative research project under the auspices of Ministry of Energy, Green Technology and Water (KeTTHA), Malaysia, and also the Public Works Department (JKR), Malaysia. He also served as the Deputy Director for service commercialization on energy efficiency technology under the collaboration with Centre of Excellence for Engineering and Technology JKR (CREaTE), Malaysia. He was previously appointed as the Chairman for the Energy Efficiency Committee in FEE, UiTM and also the committee member in the Master of Electrical Power Engineering Programme, Faculty of Engineering, Universiti Putra Malaysia (UPM). He has served as the panel assessor for research grant proposals at the Ministry of Higher Education (MOHE), Malaysia and Latvian Science Council, Europe.