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Modular Multilevel Converter Topologies with DC-Short Circuit Current Limitation
Rainer Marquardt 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5
Demanding future applications in power transmission and drives ? like solar-thermic power plants and off-shore wind power ? require advanced converter systems. Modular Multilevel Converters are well adopted to these needs, owing to industrial scalability, high efficiency and fast dynamic controllability under transient and fault conditions ? including DC-Side faults. The respective features of the established concepts for the high power range (M2C) and of new concepts for the low power range (MHF) are explained.
High performance switched reluctance drives with wide field weakening range
Rainer Marquardt,Marc Hiller 전력전자학회 2001 ICPE(ISPE)논문집 Vol.2001 No.10
For electrical vehicles, switched reluctance drives present a promising alternative - compared to asynchronous and synchronous (permanent magnet) concepts. For these applications, a very wide field weakening range is a key issue. Other requirements include high torque output from a small machine and low current ripple at the DC-side without the use of bulky filters - when powered from fuel cells or advanced Lithium-Ion-batteries. A new converter and control strategy according to these requirements is presented and compared to existing designs. The comparison is done for a drive system with a continuous power rating of 30 to 40 kW.<br/>