Zero Sequence Astatic Control of Three-Phase Four-Leg Voltage Source Inverter of Power Supply System

In this paper, a synthesis of the regulator for the fourth leg transistors of the three-phase four-leg voltage source inverter with the use of the analytic signal concept is proposed. Taking into account the feature of the electrical network of the aircraft, the type of the load is assumed to be three-phase four-wire Y connection. In addition, the load unbalance is allowed.