Three-Phase Electroless Swiss Converter Grid-Side Current Harmonic Suppression Strategy

Electrolytic capacitors have become an important factor restricting the reliability of the Swiss converter due to their easy aging characteristics. A driving scheme based on three-phase electroless Swiss converter is proposed in this paper, which aims to reduce the size and weight of the bus capacitor, and at the same time, improve the power quality of the underdamped system to ensure the realization of electroless Swiss converter control under AC380V power supply and 3kW operation power. Finally, a prototype of the three-phase electroless Swiss converter is developed, and the feasibility of the designed algorithm is verified.