Novel Adaptive Hysteresis Current Controller for Active Power Filters
Eyad k. Almaita, Johnson A. Asumadu |Pages: 55-72|

Abstract— Hysteresis Current Control (HCC) is considered one of the most popular PWM techniques used in active power filters applications. The variable switching frequency is an associated problem with the conventional HCC. In this paper, a novel adaptive HCC algorithm is introduced. The proposed algorithm inherits the advantages of the conventional HCC algorithm and effectively mitigates the problem of the variable switching frequency, associated with the conventional HCC. The proposed algorithm uses a closed-loop control scheme to maintain a nearly constant switching frequency for a Hysteresis current controller. Although this algorithm was applied on shunt active power filters, it can be extended to other applications. The proposed algorithm is validated through simulation results using MATLAB/SIMULINK.