Sizing and Short-Circuit Capability of a Transformerless HVDC DC–DC Converter

Step up dcdc converter pdf

DC Fault Ride-through Capability and STATCOM Operation of a HVDC Hybrid Voltage Source Converter

HVDC transmission systems are becoming increasingly popular when compared to conventional AC transmission methods. HVDC voltage source converters (VSC) can offer advantages over traditional HVDC current source converter topologies; as such, it is expected that HVDC-VSCs will be further exploited with the growth of HVDC transmission. This paper presents the DC fault ride through capability and n...

a New Resonant Converter Circuit for Reluctance

The purpose of this paper is to introduce a different type of converter circuit used to drive switched reluctance motors. It continues with detailed discussion on the resonant converter armed at minimizing or eliminating the transistors switching losses. Finally the drive has been tested on a disc-type reluctance motor for the perfomance and functionality.

A New Circuit Topology for Open Circuit and Short Circuit Fault Tolerant Dc - Dc Converter

This paper describes a new design for a fault tolerant Hbridge dc-dc converter. Open circuit and short circuit fault tolerance is achieved using multilevel converter topology in combination with pulse width modulation control strategy allowing a large set of converter switching states to produce bidirectional power flows at any required output voltage. If two switches fail at particular instant...

Of a High Current Hvdc Circuit Breaker with Fast Fault Clearing Capability

Recent yea rs have seen r a p i d growth i n d i r e c t c u r r e n t t ransmiss ion. Th is growth increases the need and scope o f a p p l i c a t i o n f o r a h i g h vo l tage d i r e c t c u r r e n t c i r c u i t breaker . S i g n i f i c a n t improvements have been made i n a p r e v i o u s l y developed 500 kV, 2000A HVdc c i r c u i t breaker . These improvements have increased t h...