Novel line-side inverter with active filter option: Two paralleled inverters with high speed direct current control algorithms

This paper presents a novel direct current control algorithm for Voltage Source Inverters (VSI) which combines the advantages of common space vector pulse-width modulation (SVPWM) techniques with the outstanding dynamic performance of direct current control methods. An implementation on a grid-connected line-side inverter is introduced followed by corresponding measurement results. In this connection an active filter option for improved power quality is discussed.