An analysis on power variance of SMFIR structure

In this paper, we study on the optimized SMFIR(Shaped Magnetic Field In Resonance) structure to reduce OLEV´s(On-Line Electric Vehicle) power variance. It is hard to locate the vehicle on a road exactly in which the power line is placed under the road. This is the main reason why the power variance would occur dramatically since the shape of magnetic fields which are absorbed on pick-ups doesn´t match between power line and pick-ups. As to this problem, OLEV should be designed to compensate unmatched magnetic fields by optimizing the structure. In addition, it is important to limit EMF, generated from high frequency current, within ISNIRP standard. As safety is verified, OLEV will be stepped forward to commercialization. Therefore, we analyze the factors that affect to power increase and decrease from SMFIR structure. Furthermore, we suggest the optimized SMFIR structure which is safer and have higher performance.