Capacitor Energy Based DC-Link Voltage Control Method for Dual Three-Phase PM Assisted SynR Starter/Generator

This paper proposes a voltage control method based on the DC-link capacitor energy concept for dual three-phase (DTP) permanent-magnet-assisted synchronous reluctance starter/generator (PMa-SynRS/G). Conventional voltage control methods suffer from poor dynamic performance and the control parameters are sensitive to speed and load. To solve this problem, the DC-link capacitor energy is taken as controlled plant in the proposed method, where the control model of the generation system is linearized. The energy and power relationship between motor and rectifier is analyzed and a load power feed-forward strategy is applied to reduce the impact of load uncertainty. Control parameters are designed based on mathematical analyzing of the system. Finally, simulation and experimental results verify the proposed method.