New Energy Converter Control Method Based on the Droop of Hyperbolic Tangent Function

Abstract

Aiming at the problems of slow response speed of the output active power of the new energy converter based on droop control, and large active power oscillation and overshoot in the dynamic process, a new energy converter control method based on the drop of the hyperbolic tangent function is proposed. This method first calculates the average value of the output active and reactive power of the converter; then performs the hyperbolic tangent function droop control on the active power to obtain the angular frequency command of the output voltage; performs linear droop control on the reactive power to obtain the output voltage Amplitude command; finally, double closed-loop control of output voltage and inductor current in dq coordinate system. Compared with the traditional droop control, the simulation results show that the output active power response speed becomes faster, and it has a shorter dynamic adjustment process.