2018 IEEE Wireless Power Transfer Conference (WPTC)

1 / 2017-12-09 16:50:12

Design of Z-Source fed LCLC resonant converter for Electric vehicle charging application through wireless power transmission

LCLC resonant converter, wireless power transfer, soft switching, Z-source converter and constant current

Electric vehicles (EVs) are increasingly popular in which electro chemical batteries, the ultra capacitors and fuel cells are the main energy storage elements. A conventional on board chargers is used for charging application. In recent days the technology is moving towards a clean charging methods like wireless power transmission, wherein the power transmitted without cords and cables. But, in actual practice this technology has been limited to low power applications. In this paper an attempt has been made to explore this technology for EV charging application by adopting Z-source is also categorized as potential of high power application. To achieve precise control on the output charge feeding to battery has been achieved by cascading resonant converter with Z-source converter. In this paper proposed a novel converter which utilizing fourth order LCLC resonant converter along with Z-source converter. In addition soft switching reduces losses in the inverter, which in-tern increases the overall efficiency. A detailed mathematical analysis has been carried out and the results are verified through simulation. The design is rated for 12V and can provide load independent constant current of 100A.