Three-phase Four-wire Voltage Converter with D-Σ Control and Phase-Amplitude Compensation

This paper proposes a converter with division-summation (D-Σ) control and phase-amplitude compensation. The system allows independent adjustment of specific harmonic voltage, reducing the tracking error. Compared with the D-Σ control alone, the converter can track the command more accurately. Moreover, it retains the characteristics of high inductance degradation tolerance. Finally, the proposed control is validated by measurement results.