Regenerative Braking Mode Operation of a Three-Phase H-Bridge Inverter Fed PMBLDC Motor Generator Drive in an Electric Bike

Abstract

In this article, the industrial application of three-phase H-bridge inverter fed PMBLDC drive system with its regenerative braking and motoring modes of operation produce electric energy harvestation and its effective utilization in an electric bike is discussed. The H-bridge inverter topology having two legs with four gate drive switches, reduce current ripples and improves the current rating of a drive system. Therefore, the three-phase H-bridge inverter connected PMBLDC drive can be preferred for high torque applications with reduced torque ripples during the commutation of switches. The PMBLDC drive is a permanent magnet machine; so it is proposed in both motoring and regenerative braking modes of operation. In motoring mode, drive consumes electrical energy from battery source for converting the electrical energy into suitable mechanical energy for riding the electric bike. But in a regenerative braking mode, drive produces electricity for charging the battery source from a mechanical loading of an electric bike. The regenerative braking mode of operation improves the overall efficiency of the drive system. The performance of a three-phase H-bridge inverter fed PMBLDC drive with these modes are analyzed using MATLAB/Simulink software, the hardware circuit is implemented with supporting simulations in the Proteus 8.0 software and finally the electric bike is designed using 2 hp PMBLDC drive system.