Analysis of contactless power transfer system characteristics influenced by multi-primary multi-secondary contactless transformer

Contactless power transfer (CPT) system is widely used in high power occasion recently. The characteristics of movable loosely coupled transformer (MLCT) in CPT system have powerful influences to the performance of whole system. This paper studies a kind of CPT system with multi-primary multi-secondary contactless transformer. By establishing the equivalent circuit of CPT system, this paper analysis the characteristics of system such as output current, output voltage, output power and efficiency, influenced by the internal resistance, mutual inductance and frequency of multi-primary multi-secondary contactless transformer. Moreover, a further simulation has done to prove the theoretical analysis.