A new circuit topology using Z-source resonant inverter for high power contactless powertransfer applications
Divisions of PAS
Abstract: In this study, a new circuit topology using a Z-source resonant inverter (ZSRI) for high power applications in large-air-gap contactless power transfer (CPT) systems, has been investigated. The main shortcoming of a large-air-gap CPT system is the poor power transfer efficiency due to low magnetic coupling. In order to minimize this short-coming and to improve the overall performance of the system by boosting the power transfer capability, in this paper a CPT system with the newly developed circuit topology using high frequency Z-source resonant inverter has been proposed. Using the newly developed circuit topology for the CPT system, it has been observed that the overall per-formance of the system has been improved to a reasonable level with a purely sinusoidal resonant current flowing through the primary side. Therefore, no harmonics will be in-jected into the source. The proposed CPT system with an air gap of 16 cm and a misa-lignment of 3 cm has been simulated using the Maxwell finite element tool and Simp-lorer circuit simulation software for an output power of 2 kW.
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