Combined time‐domain and frequency‐domain approach to hybrid compensation in unbalanced non‐sinusoidal systems
This paper deals with improving power quality in a situation where this quality is degraded by a low‐quality load that may cause voltage asymmetry, harmonic distortion and variation of the voltage RMS value. The paper discusses a decomposition of the useless component of the supply current into a component compensated with an adaptive passive circuit, of parameters updated to varying load conditions once a cycle, and a component compensated with a continuously controlled current source. Controlling such a hybrid compensator requires that some parameters of the load, defined in the frequency domain, are measured along with instantaneous values of voltages and currents. Compensators with such a structure and control make it possible to circumvent limitations of active power filters with respect to their power rating. Copyright © 1994 John Wiley & Sons, Ltd.
Publication Source (Journal or Book title)
European Transactions on Electrical Power
Czarnecki, L. (1994). Combined time‐domain and frequency‐domain approach to hybrid compensation in unbalanced non‐sinusoidal systems. European Transactions on Electrical Power, 4 (6), 477-484. https://doi.org/10.1002/etep.4450040610