Enhancing Harmonics Mitigation of 5-Level Cascaded H-Bridge Inverter Through Fuzzy Proportional Voltage Balancing Control

Swee Xiang Yong; Hoon Yap; Hou Kit Mun; Foo Wah Low

Authors

Swee Xiang Yong Universiti Tunku Abdul Rahman, Sungai Long campus https://orcid.org/0009-0009-7440-7261
Hoon Yap Universiti Tunku Abdul Rahman, Sungai Long Campus
Hou Kit Mun Universiti Tunku Abdul Rahman, Sungai Long Campus
Foo Wah Low Universiti Tunku Abdul Rahman, Sungai Long Campus

Keywords:

Shunt Active Power Filter (SAPF), Harmonics , DC-link Voltage Unbalance, Cascaded H-Bridge (CHB)

Abstract

This work presents a novel approach to enhancing harmonics mitigation in 5-level cascaded H-Bridge inverters (5-lv CHB) through a Fuzzy Proportional Voltage Balancing Control technique. The proposed technique is applied to a Shunt Active Power Filter (SAPF) system to effectively reduce Total Harmonic Distortion (THD) in power systems. By dynamically balancing the voltages of the inverter’s DC-link capacitors, the proposed technique minimizes overshoot and ripple in the output waveform, ensuring a more stable and efficient operation. Simulation and experimental results demonstrate that the proposed technique significantly outperforms traditional voltage balancing technique, achieving improved harmonic suppression and reduced THD under varying load conditions. This approach provides a robust solution for enhancing power quality in modern power systems.

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Author Biographies

Swee Xiang Yong, Universiti Tunku Abdul Rahman, Sungai Long campus

SWEE XIANG YONG earned his B.Eng. degree in Mechatronic Engineering from Universiti Tunku Abdul Rahman (UTAR), Sungai Long, Malaysia. He is currently a student of Master of Engineering Science at UTAR. He is a registered Graduate Engineer with the Board of Engineers Malaysia (BEM). His research interests include power electronics, power quality, fuzzy control, and multilevel inverters.
Hoon Yap, Universiti Tunku Abdul Rahman, Sungai Long Campus

YAP HOON received the B.Eng. degree in Electrical and Electronic engineering and Ph.D. degree in Electrical Power Engineering from Universiti Putra Malaysia (UPM), Serdang, Malaysia, in 2013 and 2017, respectively. After completing his Ph.D., he served as a Postdoctoral Researcher at the Advanced Lightning, Power, and Energy Research Centre (ALPER), UPM. He is currently an Assistant Professor with Universiti Tunku Abdul Rahman (UTAR), Sungai Long, Malaysia. His research and teaching interests include power electronics, power quality, artificial intelligence, and multilevel inverter.
Hou Kit Mun, Universiti Tunku Abdul Rahman, Sungai Long Campus

HOU KIT MUN received the B.Eng. (Hons.), M.Eng., and Ph.D. degrees in electrical engineering from the Universiti Teknologi Malaysia, Skudai, Johor, Malaysia, in 2006, 2008, and 2014, respectively. He is currently an Assistant Professor in the Department of Mechatronics & BioMedical Engineering in Universiti Tunku Abdul Rahman (UTAR), Malaysia. He is a registered member of the Institution of Engineering and Technology (IET) and a Graduate Engineer with the Board of Engineers Malaysia (BEM). He is also a Professional Engineer (Ir) registered under BEM and a Chartered Engineer registered with the Engineering Council of the United Kingdom. His current research interests include microwave and RFID sensors and their applications, Internet of Things (IoT) implementation, artificial intelligence and machine learning, and non-intrusive power monitoring.
Foo Wah Low, Universiti Tunku Abdul Rahman, Sungai Long Campus

Ts Dr Low Foo Wah currently working as Assistant Professor under Department of Electrical and Electronics Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus. He received his PhD from Nanotechnology & Catalysis Research Centre, University of Malaya in nanomaterials and nanoscience field. His main research interests are in the areas of graphene nanomaterial incorporated with metal oxide for photovoltaic cell application especially on Dye-sensitized Solar Cells and Perovskites Photovoltaics cells. His works have been published in more than 50 referred international top-tier journals with h-index of 17 and more than 10 international proceedings in materials science, physics, chemistry, and any related renewable energy researches. Overall, he has reviewed more than 30 papers in the past one year, mainly for top international journals and conferences.