A high voltage battery simulator using Z-source converter with a wide output voltage range

This paper proposes the battery simulator using Z-source converter with wide output voltage range and we make a research on a control method for driving a battery simulator. We also explain the superiority in applying the Z-source converter to the battery simulator through the analysis of the output voltage range of Z-source. Analysis results show that the Z-source converter for battery simulator can implement buck-boost operation by using the shoot-through state, which is prohibited in the conventional AC/DC PWM converter as voltage source rectifier (VSR), it can overcome the voltage limitation of conventional battery simulator. A simple battery model is used for the battery simulator considering the internal series resistance and open circuit voltage (OCV), a voltage reference of battery simulator is generated by using a shepherd model. The validity of the proposed system which is battery simulator using Z-source converter is verified through simulation results.