Multiphase ZVS active clamp boost converter: DC and dynamic current sharing
IEEE Transactions on Industrial Electronics
- Volumen: 60
- Número: 11
- Fecha: 01 enero 2013
- Páginas: 4947-4959
- ISSN: 02780046
- Tipo de fuente: Revista
- DOI: 10.1109/TIE.2012.2227896
- Tipo de documento: Artículo
- Editorial: Institute of Electrical and Electronics Engineers Inc.
The active clamp boost converter (ACBC) has been analyzed, and a complete model has been obtained. It has been checked that it behaves as a voltage source with high input impedance. Because of this feature, this topology is suitable for multiphase design, where different stages share the load in a passive way, without any extra mechanism or components. The design of multiphase converters is simplified, particularly for a big number of phases, as no extra information must be processed. Steady-state current sharing has been studied as well as how component tolerances affect the current distribution. A simple design guide to select different components has been detailed, and, moreover, the conditions to achieve soft switching have been revised. To test passive current sharing, a two-phase ACBC has been built. It has been tested in open loop to prove that without any control loop or extra components, the load sharing is achieved. © 1982-2012 IEEE.