Research on Optimization of Power Generation Guality of Marine Main Engine Electric Dynamometer System

In order to solve a series of power quality problems such as harmonics, three-phase voltage and current imbalance when the marine main engine electric dynamometer system is integrated into the grid as a distributed energy source. A design method of LCL filter grid-connected inverter with dual three-phase space vector pulse width modulation (SVPWM) power balance joint control combining the marine main engine electric dynamometer speed loop and capacitor current feedforward control is proposed, and the proper parameters are designed to realize the ideal functions of the system. Through the simulation test of the energy feedback system of the whole marine main engine, the optimization effect of the total harmonic distortion rate of the grid-connected current based on this design method can be detected. Compared with other control modes, it is reduced from 2.18% and 1.6% to 1.03%, which effectively optimizes the quality of the feedback power generated by the marine main engine electric dynamometer system.