In this paper, a boost converter with a clamp circuit is proposed for high intensity discharge (HID) lamp application. The clamp circuit provides zero voltage turn on for both main and clamp switches. Compared to conventional boost converters, the proposed converter has the following advantages: (i) high voltage gain without suffering from extreme duty ratio, (ii) low stress on the switches and...

this paper presents a new arc starter circuit that is usable in manual metal arc welding (mma) power supplies. the proposed circuit uses an auxiliary circuit and a series coupling transformer for adding high frequency spikes to output dc voltage during arc striking. the proposed circuit is usable in inverter based arc welding supplies and it could result in a decrease of weigh, volume and expen...

In order to protect wiring, facilities, human bodies and the like from electric accidents such as overcurrent to the load, a short circuit, ground fault or earth leakage of an electrical line, low-voltage circuit breakers, as typifi ed by molded case circuit breakers (MCCB) and earth leakage circuit breakers (ELCB), are installed in every type of machine, equipment, facility and building that u...

Abstract High voltage direct current (HVDC) systems are efficient solutions for the integration of large-scale renewable energy sources with main power grids. The rapid development HVDC grid has resulted in a growing interest DC circuit breakers (DCCBs). A fast and reliable breaker is necessary requirement large scale This paper provides comprehensive review survey CBs discusses potential resea...

In this paper, a new design of circuit breaker is proposed which operates based on the energy Electronic switching gadgets. A simple constructed and tested with overload conditions. Based contemporary go flow threshold, mosfet becomes ON OFF. The triggers relay sends journey signal to breaker. reset time may be numerous microcontroller. response in comparison conventional for distinct hundreds....

Abstract This paper proposes a high-voltage circuit breakers status evaluation method based on the primary and secondary integrated switch detection platform to cope with poor effect of existing methods. A breaker index system was determined in combination actual situation breakers. The subjective weight analytic hierarchy process, objective calculated by entropy method, analog acquisition accu...

This paper is devoted to simulate the arc movement in the quenching chamber of the low-voltage circuit breaker. Based on a group of governing equations, a three-dimensional (3-D) arc model is built and solved by a modified commercial code. According to the simulated results, some phenomena such as a ‘bulge’ in front of the arc column, a tail in the rear of the arc column, arc shrinkage near the...