Design And Analysis Of Integrated Dual-Input Dual-Output DC-DC Converter For Electric Vehicle And Drives Applications

To enable efficient and reliable operation of Electric Vehicles (EV)/Drives, optimization of power electronic converters in terms of size and cost is necessary. EVs and also some drive applications require a minimum of two different DC voltage levels, one for supplying the electric motor and the other for auxiliary loads. To supply these loads, electric vehicles utilize a battery along with renewable sources like solar panels and fuel cell. Incorporation of several sources and loads into a single system is usually achieved using two or more conventional DC-DC converters. But this increases the size and complexity of the converter system. A new Dual-Input Dual-Output (DIDO) DC-DC converter with reduced component count is introduced as an effective alternative. This converter integrates a PV system with a battery to provide boost and buck voltages at the two output ports capable of feeding the EV loads, namely DC motor and auxiliary load rated at 72V and 24V respectively. The proposed converter is operated in battery charging and discharging mode and a system efficiency of around 90% is (a) obtained. Performance of the converter is analyzed and compared with other DIDO topologies. Simulation of the converter is carried out using MATLAB-Simulink and the results are validated.