Paper
A Simple Adaptive Control Technique for Shunt Active Power Filter Based on Clamped-Type Multilevel Inverters
- Authors:
- Ahmad M. Assad; Morad Abdelaziz; Mostafa I. Marei
- Abstract
- The clamped-type multilevel inverters, which include Neutral Point Clamped (NPC) and Flying Capacitor (FC) inverters, are very attractive topologies for implementing shunt Active Power Filters (APF) in medium and high power networks. This paper presents a simple and adaptive control algorithm for a three-level current-controlled NPC-based APF. The proposed control algorithm employs three independent ADAptive LINEar combiners (ADALINE) modules to provide fast, accurate, and adaptive harmonic tracking. Two Proportional Integral (PI) controllers are implemented to generate the necessary reference current components for regulating the neutral point potential and the dc-side voltage, simultaneously. Furthermore, the proposed control algorithm is expanded for the control of the FC-based APF by replacing the Neutral Point (NP) potential controller with a modified dual band hysteresis current control (HCC) to regulate the voltage of the clamping capacitors using the redundant switching states. Simulation results are provided to evaluate the performance the two proposed multifunction control algorithms. The results expose the adaptive and accurate compensation of the load harmonics as well as the fast regulation of the voltages across the dc-side capacitors under normal and dynamic conditions.
- Keywords
- Active Power Filter; Flying Capacitor Multilevel Inverter; Harmonics Compensation; Neutral Point Clamped Inverter
- StartPage
- 85
- EndPage
- 95
- Doi