Minimization of Energy Losses in the Traction Drive of HEV Using Optimized Adaptive Control

This paper proposes a simulation model of an adaptive optimal control strategy for the traction drive of the hybrid electric vehicle. The control unit has to ensure the stability of the power network at different operating conditions. Moreover, the optimal design of the controller is required for the power management in order to reduce the energy losses during acceleration and braking processes. The traction drive is a variable speed drive with a three-phase externally excited synchronous machine operating in both the motoring mode and the generation mode. A voltage source inverter is utilized in order to control the machine in the motoring operation and to obtain the DC power when the machine is operated as a generator during the regenerative braking. The control unit guarantees a robust operation at different rotor speeds and at different load conditions.