A New Active Damping Control Strategy for Stator Ironless Axial-Flux Permanent Magnet Generator System with LC Filter

This paper proposes a new active damping control strategy with LC filter for stator ironless axial-flux permanent magnet (AFPM) generator system. AFPM machines with enough power density and efficiency are the preferred choice for the propulsion of electric aircrafts. The LC filter connects the generator and the converter to increase the generator inductance, which improves the control effect. An active damping control strategy is introduced to weaken the resonant spike caused by the LC filter, which improves the stability of system according to the Bode diagram. The root locus indicates that active damping control can also enhance the dynamic performance of the stator ironless AFPM generator system. Finally, a model is designed in accordance with the active damping strategy and the simulation results prove the superiority of the proposed control strategy.