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ZERO – CURRENT SWITCHING OF RESONANT INVERTER FOR CONTACTLESS INDUCTIVE POWERING TRANSMISSION SYSTEMS OVER LONG AIR–SEPARATION | ||
| AL-TAQANI | ||
| Article 1, Volume 24, Issue 3, 2011, Pages 96-105 | ||
| Author | ||
| Abd- ALjabar .F. ALI | ||
| Abstract | ||
| The proposed high frequency inverter circuit is devoted to analyze the behavior of contactless inductive powering transmission system with large air separation. Typical applications are for automatic battery charging station and for power supply of inductively powered electric vehicles and other movable consumers. The paper investigates the influence of geometrical and electrical parameters on power transmission with air-separation of (1000mm) through zero-switching state simulation of the proposed high frequency inverter. Contactless powering transmission systems operate at resonance frequency with a proper choice of the resonance capacitor on the primary and secondary side, the contactless system represents an ohmic load for the primary inverter. Therefore switching events take place at zero current (ZCS) without auxiliary commutation elements, which is an important precondition for reaching higher transmission frequencies. For this application a special inverter was developed. The phase–shifted controlled bridge at the primary side is equipped with Insulated-Gate bipolar transistors and freewheeling silicon carbide schottky diodes. Because of their ultra low reverse recovery charge, the operation behavior is much better as compared with fast silicon diodes. | ||
| Keywords | ||
| flux model; magnetic devices; contactless power transmission; high frequency inverter; schottkey diodes | ||
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