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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Bulletin of Electrical Engineering and Informatics
Teik Hua Kuan
Universiti Tunku Abdul Rahman
Control & Systems Engineering Electrical & Electronics Engineering

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Behavioral studies of surge protection components Teik Hua Kuan; Kuew Wai Chew; Kein Huat Chua
Bulletin of Electrical Engineering and Informatics Vol 10, No 1: February 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v10i1.2665

Abstract

In our daily life, almost all the items we used, being a computer, television, lift or vehicle we drive consist of some kind of electrical or electronics component inside. The operation of these devices could be severely affected by lightning activity or electrical switching events, as there are more than 2000 thunderstorms in progress at any time resulting in 100 lightning flashes to ground per second. In practice, any device using electricity will subject to surge damages induced from the lightning or switching of heavy load. Surge protection device (SPD) is added at the power distribution panel and critical process loop to prevent damage subsequently cause plant shutdown. There are many questions raised on the SPD. How can this small device protect the equipment from large energy release by the lightning? What is inside the device? How does it work? This paper provides comprehensive detail in revealing the science and engineering behind the SPD, its individual component characteristic and how does it work. The technical information presented is limited to surge protection on equipment; surge protection for building structure will not be discussed here.
A novel overvoltage protection scheme for power electronics switching under differential surge conditions Teik Hua Kuan; Kuew Wai Chew; Kein Huat Chua
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 13, No 3: September 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v13.i3.pp1537-1547

Abstract

The proposed scheme is employed for the efficient operation of a DC-DC-based buck converter. This protection scheme shows the optimal placement of a varistor in the power electronics converter side under different surge conditions. Advanced varistors have excellent electrical material properties and electrothermal behavior for the enhancement of power absorption capability. Varistors have been examined widely in the last four decades that are employed for surge protection applications. The advantage of power surge protection using varistor-based power devices is vital due to the great sensitivity of the equipment integrated into the grid and emerging power electronics-based DC systems with low and high voltage ratings. In this research, a varistor can be placed to protect the switching devices such as MOSFETs in power electronic-based buck converter side due to uncertain overvoltage under differential surge. The proposed MATLAB simulation study shows the peak voltage stress on the grid due to the surge and its enhancement scheme.
Co-Authors Kein Huat Chua Kuew Wai Chew