High Dynamic Cooperative Voltage Stabilization Control for the Generator and Energy Storage based Aircraft Hybrid Electric Power System with Millisecond Class Transient Load Interference

To improve the voltage stabilization control performance, a high dynamic cooperative voltage stabilization control is proposed for the generator and energy storage based hybrid electrical power system in the aircraft applications, which can effectively suppress the millisecond class transient periodic and non-periodic interference due to the electric actuator and the pulse load. The robust electrical power system (REPS) topology is proposed, which consists of the three-stage brushless synchronous generator system and the energy storage system (ESS). The generator is used to supply the steady electrical power, while the ESS is used to compensate for the transient electrical power. The coupling power supply behavior of the REPS is then thoroughly analyzed, which can provide a guideline for the voltage stabilization control design. The load current feedforward based voltage control is proposed to suppress the millisecond class transient non-periodic load interference, while the load current periodic component feedforward based voltage control is proposed to improve the REPS performance with the millisecond class transient periodic load interference. Furthermore, the notch compensation based current control is proposed to improve the dynamic response performance of the ESS, which can eliminate the LC resonance issue due to the bidirectional DC-DC converter. Finally, the effectiveness of the proposed voltage stabilization control is verified on a 40kW REPS experimental platform. The resulting REPS has an excellent voltage stabilization control performance even under the millisecond class transient periodic and non-periodic load disturbance conditions.