Publication

New hybrid circuit breaker/current limiter with serial and parallel commutation assistance

2004
Conference Papers

Abstract

This paper presents a new hybrid circuit breaker topology based on the use of serial and parallel semiconductors that allows to increase the supply voltage and default current with no arc, and to benefit from a current limitation function. A concrete marine application, with 6.6 kV AC breakers, have been studied and simulated for the DGA (French defence procurement agency). The whole constraints have been shared between the different components in order to optimise the system. This new circuit breaker shows interesting performances and new functionalities that should be able to give additional margins on network components design.

Official source

https://infoscience.epfl.ch/entities/publication/9fa6a432-776c-47e6-b435-7c929d709335

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2004
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9fa6a432-776c-47e6-b435-7c929d709335

About this result

Related concepts (32)

Power supply

A power supply is an electrical device that supplies electric power to an electrical load. The main purpose of a power supply is to convert electric current from a source to the correct voltage, current, and frequency to power the load. As a result, power supplies are sometimes referred to as electric power converters. Some power supplies are separate standalone pieces of equipment, while others are built into the load appliances that they power. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.

Circuit breaker

A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by overcurrent. Its basic function is to interrupt current flow to protect equipment and to prevent the risk of fire. Unlike a fuse, which operates once and then must be replaced, a circuit breaker can be reset (either manually or automatically) to resume normal operation. Circuit breakers are made in varying sizes, from small devices that protect low-current circuits or individual household appliances, to large switchgear designed to protect high voltage circuits feeding an entire city.

High-voltage direct current

A high-voltage direct current (HVDC) electric power transmission system (also called a power superhighway or an electrical superhighway) uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. Most HVDC links use voltages between 100 kV and 800 kV. However, a 1,100 kV link in China was completed in 2019 over a distance of with a power capacity of 12 GW. With this dimension, intercontinental connections become possible which could help to deal with the fluctuations of wind power and photovoltaics.

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New hybrid circuit breaker/current limiter with serial and parallel commutation assistance

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