Results 121 to 130 of about 2,008 (171)

An Approximate Mathematical Expression for Nonlinear Resistive Properties of Metal Oxide Varistor Elements for FDTD Simulations

IEEE transactions on electromagnetic compatibility (Print), 2020
A simple mathematical expression for nonlinear resistive properties of metal oxide varistor (MOV) elements is proposed for electromagnetic and surge simulations using the finite-difference time-domain (FDTD) method.
Tokuya Tanaka, Ryosuke Tsuge, Y. Baba, Yoshimasa Tsujimoto, N. Tsukamoto   +4 more
semanticscholar   +1 more source

A Method of Creating the High-Voltage Circuit Model of Metal–Oxide Varistor for the Simulation of Square Pulse Forming

IEEE Transactions on Circuits and Systems - II - Express Briefs, 2020
Metal–oxide varistor (MOV) is a kind of special ceramic which can be used for square pulse forming based on its nonlinear electrical characteristics.
Yancheng Cui, Qilin Wu, Hanwu Yang, Jingming Gao, Song Li, Chengyu Shi   +5 more
semanticscholar   +1 more source

Durability Analysis of Metal Oxide Varistor under Direct Current Switching Surges

2020 International SAUPEC/RobMech/PRASA Conference, 2020
The circuit-break switch of a direct current (DC) system will have to dissipate any stored residual line inductance energy during the switch-off period.
D. van Niekerk, P. Bokoro
semanticscholar   +1 more source

The Effect of Electrical and Moisture Degradation of Metal Oxide Varistor with Insulation Diagnosis

IEEE International Conference on Condition Monitoring and Diagnosis, 2020
Condition based monitoring of surge arresters (SA) has become a primary concern to ensure power supply quality on medium and high voltage networks. Understanding of SA behavior helps forecast their failure.
C. Chuayin, M. Zinck, A. Kunakorn, N. Pattanadech   +3 more
semanticscholar   +1 more source

Coordination of surge protection and operation of thermal protection at metal oxide varistor (MOV)

2025 International Symposium on Lightning Protection (XVIII SIPDA)
In the design of MOV modules including a thermal cut off for low-voltage AC power supplies, PV, and DC applications, thermal coordination between MOV heat generation by impulses and protection for thermal runaway was investigated in order to realize a ...
N. Tsukamoto, Mitsunobu Shiozaki, M. Ishii   +2 more
semanticscholar   +1 more source

Data-Driven Characterization and Forecasting of Metal-Oxide Varistor Degradation in DC Circuit Breakers

Applied Power Electronics Conference
Energy absorption devices play a critical role in semiconductor-based dc circuit breakers (DCCBs), where they generate a counter-voltage to reverse fault current direction and dissipate fault energy during the interruption process.
Z. Zhang, Yang Liu, Lukas Graber, Maryam Saeedifard   +3 more
semanticscholar   +1 more source

Failure Analysis of Metal Oxide Varistor used in Wireless Charger of Automotive Vehicle

ARAI Journal of Mobility Technology
Automotive advancement mainly focuses on Personalization, Automation, Connectivity and Electrification (PACE) which includes advancement in wireless and telecommunication domain.
Srishti Bhatt, Dr. Shirish C. Bali
semanticscholar   +1 more source

A Conventional Distance Protection for Series-Compensated Lines Considering TCSC Protected by a Metal Oxide Varistor

2019 IEEE 8th International Conference on Advanced Power System Automation and Protection (APAP), 2019
In this paper, a modified distance protection setting method is proposed to use the conventional distance relays for the transmission lines. The comprehensive studies regarding the impact of the thyristor-controlled series capacitor (TCSC) on a ...
Woo-Seok Seo, Sang-Hee Kang, Younghyun Yoon, Jong-su Yoon   +3 more
semanticscholar   +1 more source

A Dynamic Nonlinear Model for Metal-Oxide Varistor Considering the Energy Absorption Excited by Wide-Range Transients

IEEE Transactions on Power Delivery
The dynamic models of the metal-oxide varistors (MOV) have been developed successively and they show good performances in the prediction of the residual voltage.
Yu-ying Wu, Yan-zhao Xie, Ning Dong, Fu-zheng Tian   +3 more
semanticscholar   +1 more source

Impedance Characteristics of Metal Oxide Varistor under Different Pulses

2019 IEEE Pulsed Power & Plasma Science (PPPS), 2019
In this paper, the metal oxide is determined according to the characteristics of the very fast transient overvoltage (VFTO) waveform measured in the gas-insulated metal-enclosed switchgear (GIS) according to the standard regulations.
Wei Zhang, Jie Guo
semanticscholar   +1 more source