Highly integrated three-port power spring based on reactive power optimization modulation strategy

Aiming at the three-port power spring based on dual phase-shift control, this paper proposes a DPS optimal control strategy considering the full power range and full operating modes. Firstly, the reactive power generation is elaborated in detail. Then, a DPS optimal control strategy based on the minimum reactive power is proposed to analyze the optimal coordinate trajectory of the reactive power in the operating mode by dividing the power interval of each operation mode, and then optimize the transmission efficiency of the power spring. Finally, a test platform is constructed to verify the feasibility of the optimized control.