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Study on a new control strategy based on three phase current inverter

The three-phase current source inverter has the characteristics of accurate current control, high dynamic response speed and strong current limiting ability, and the DC side voltage can be adjusted from zero. In this paper, the three-phase current source inverter topology is studied, the mathematical model of the converter is established in the three-phase static coordinate system and two-phase rotating coordinate system, and get the equivalent circuit in two coordinates. The current modulation method including SPWM and SVPWM is studied. A new type of system control strategy based on two-phase rotating coordinate system is proposed. The simulation model of the whole system is established by PSIM. The results show that the proposed new control strategy is correct and feasible.