Modeling and Control of an Integrated Power Electronics Interface for Plug-In Hybrid Electric Vehicles

Plug-in Hybrid Electric Vehicles (PHEVs) have been proposed as alternatives that can reduce fuel consumption with low driving costs compared to hybrid electric vehicles. In addition, they can operate like mobile energy storage units when idling to store energy and feed it back to the grid. When the vehicle is parked (at work or at home), the PHEV battery would be recharged from the power grid and would thus allow for a reduction in the overall fuel consumption. This paper proposes a novel integrated power electronics interface for PHEVs, which consists of a novel multi-device interleaved DC/DC converter (MDIC) and Eight-Switch Inverter (ESI), in order to reduce the cost, the mass and the size of the power electronics interface (PEI) used in PHEVs while yielding high performance at any operating mode. In the proposed topology, Eight-Switch Inverter (ESI) is able to function as a bidirectional single-phase AC/DC battery charger/ vehicle to grid (V2G) and to transfer electrical energy between the DC-link (connected to the battery) and the electric traction system as three-phase DC/AC inverter. In addition, a novel multi-device interleaved DC/DC converter is proposed for interfacing the ESI to a low-voltage input source (such as Fuel Cell and battery) in order to minimize the input current/output voltage ripples and to improve the efficiency of the DC system with lower passive components size. The proposed topology is designed and its dynamic performance is validated by using MATLAB/ Simulink. The analytical and simulation results related to this research are presented. Finally, the proposed topology is experimentally verified with results obtained from the prototypes that have been built and tested in our laboratory.

Publication year:2012

Keywords:Plug-In Hybrid Electric Vehicles, Multi-Device Interleaved Converter (MDIC), Eight-Switch Inverter (ESI), Indirect Field Oriented Control (IFOC), Particle Swarm Optimization