Design and Regulation of the HF Inverter for Contactless Power Transfer Systems

Resonant inverters with width regulation of the power supply have been used many years and have been applied in the High Frequency (HF) inverters in different applications. Since they use the HF transistors (MOSFETs, IGBTs, SiC FETs and GaN) in their circuit the resonant inverters receive a new development, from an applied point of view. Their utilization in regulable and contactless systems is perspective. The circuit realization of the Resonant Inverters is a half or full bridge with free-wheeling diodes and specific switching algorithm of the control system, which are natural or slave commutations. A procedure for design and analysis of these inverters is proposed, characterized by simplification, natural purity and reliability. The procedure is a part of computerized educative-scientific program. All kinds of resonant inverters are included in the case of powering contactless power transfer systems (CPTS).