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Abstract.The principle and analysis of usage of the generalized non-active power theory for the parallel compensation of periodic and non-periodic current disturbances is presented in the paper. A non-linear unbalanced load generating periodic as well as non-periodic stochastic currents connected to an unsymmetrical non-sinusoidal voltage source is considered.

Abstract. The expected high penetration of battery chargers for electric vehicles (EV) in electric networks is foreseen as a potential problem for power quality. Battery chargers are nonlinear devices that inject harmonic currents and pollute network voltages. Thus, their harmonic emissions must be analyzed and reduced by harmonic mitigation techniques to avoid future problems. This paper analyzes and reports some real case measurements of harmonics injected by single-and three-phase battery chargers and their attenuation using line choke inductances.