Review of Key Technologies of Multi-phase Machine-based Electric-drive-reconstructed Onboard Chargers for Electric Vehicles
The electric-drive-reconstructed onboard charger provides a new lightweight design idea for the electric part of electric vehicles,aiming to utilize the electric drive unit to perform driving and charging operations separately at different moments.Compared with three-phase electric drive systems,multi-phase ones possess several merits,such as smooth output torque and fault tolerance.In view of the above,this paper first summarizes the topologies and control strategies of the grid-connected multi-phase electric-drive-reconstructed onboard chargers.Besides,fault-tolerant operation schemes of the grid-connected multi-phase electric-drive-reconstructed onboard chargers are introduced.Then,the operating principle and control strategy of multi-energy interface electric-drive-reconstructed onboard chargers for solar-powered electric vehicles are analyzed emphatically.Finally,conclusions are made,and the development direction of the multi-phase electric-drive-reconstructed onboard charger is outlined.
electric-drive-reconstructed onboard chargerelectric vehiclemulti-phase machinessolar-powered electric vehicleskey technology
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