DC-DC Converter Solutions for Modern Electric Vehicle Power Supply Systems

The main objective of this paper is to present a survey on power electronics DC-DC converter arrangements and basic cell structures that are used to combine multiple and different power sources with distinct energy and power density. The power electronic converter must be able to control the power flow among the multiple power sources and loads. An important feature of this converter, in applications such as modern electric vehicles and distributed generation supply systems, is to obtain high individual power sources performance, achieving high efficiency in the use of the generated power and improving the time response under load disturbances. In fact, the control strategy of the overall power electronic converter system is quite challenging because the vehicle performance must also be considered. An energy management fuzzy supervisory system witch takes into account all these issues are presented. Experimental results on a 3 kW prototype multiple input power electronic converter are presented.