SUPPLY AND LOADING QUALITY IMPROVEMENT IN SINUSOIDAL POWER-SYSTEMS WITH UNBALANCED LOADS SUPPLIED WITH ASYMMETRICAL VOLTAGE

Asymmetry of the supply voltage of a load and variation of its RMS value deteriorate supply quality, similarly as asymmetry of the load current, its reactive component, and variation of the current RMS value deteriorate loading quality. A method for adaptively improving the supply and loading quality with respect to the load unbalance and the voltage asymmetry is suggested and analyzed in this paper. The discussed method can be implemented for the development of an adaptive compensator for both the load balancing and supply voltage symmetrization. It was shown, moreover, that only three samples per period T of two voltages and two currents are needed for generating the control signals for the adaptive operation of such a compensator.