DC-link Capacitor Voltage Balancing for a Five-Level Diode-Clamped Active Power Filter using Redundant Vectors

Abstract

This paper investigates the compensation and modulation processes of the five-level diode-clamped active power filter, compensating a three-phase rectified resistor-inductor load with redundant vectors. From the analysis, a hybrid space vector modulation algorithm allows capacitor voltage balancing. Simulation and experimental results validate the space vector modulation algorithm.

Keywords:

• Five-level diode-clamped active power filter
• capacitor voltage balancing
• space vector modulation
• non-linear loads