Output Voltage Control Strategy of Microgrid Inverter Based on Improved Constant Power Outer Loop Control

The inverter is an important power conversion device for the microgrid system. In the common inverter constant power outer loop control method, most of the structures are complex, the dynamic response is slow, and the control efficiency is not high. This paper proposes an improved inverter output voltage for the typical structure of constant power outer loop control. The constant power outer loop control strategy obtains the voltage component by transforming the voltage of the inverter, and advances the control parameters. According to the relationship between power, phase angle, reactance and voltage amplitude, the reference value in the dq0 coordinate system is obtained, and the harmonic is reduced. The effect of the wave on the control structure avoids the cumbersome control brought about by power decoupling. The superiority of the control strategy is verified by building a simulation model.