A Multienergy Interface Electric-Drive- Reconstructed Onboard Charger for EVs With Integrated Control Strategy

In this article, an innovative multienergy interface electric-drive-reconstructed onboard charger (MEI-EDROC) and its derivative integrated control strategy (ICS) are proposed for a solar-powered electric vehicle that is equipped with a six-phase machine drive. The proposed MEI-EDROC is capable of dc charging, single-phase charging, in-motion charging, and normal driving with applications for single-phase ac grid, dc grid, and photovoltaic energy input interfaces. In particular, all the operation modes are implemented by the ICS extended from the vector control of the six-phase permanent-magnet synchronous machine. First, the topology and operation modes of the proposed MEI-EDROC are discussed. Then, operation principles for all work scenarios are studied in detail, and the concept of integrated control is proposed. Thereafter, based on the vector control strategy, the ICS is designed. Finally, a 2-kW experimental test rig is built, and the obtained results verify the steady-state and dynamic performances, as well as the mode switching operation.