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This paper proposes an improved vector space decomposition current control scheme for dual three-phase permanent magnet (PM) synchronous motors having two sets of three-phase windings spatially shifted by 30$^{\circ}$ electrical degrees. A proportional-integral (PI) and resonant (second) controller is developed for eliminating the current unbalance in $\alpha\beta$ subplane, which is effective...
This paper deals with the power flow analysis and control strategy research of unified power quality conditioner (UPQC). A UPQC is a combination of shunt and series active power filter (APF), sharing a common dc link. It can compensate almost all power quality problems such as voltage harmonics, voltage unbalance, voltage flickers, voltage sags, voltage swells, current harmonics, current unbalance,...
The main purpose of this paper is the evaluation of the shunt active power filter apparent power ratio between the apparent power generated by the source power system to the load and the compensation apparent power produced by the shunt APF to force the currents circulating toward the source to be sinusoidal and balanced. This ratio allows defining the compensations capability for different perturbations...
The main purpose of this paper is the study of the shunt active power filter (APF) compensations capability for different perturbations in three wire AC power system such as current unbalance, phase shift current and undesired harmonics generated by non linear load under balanced power system voltages. Indeed Shunt APF has been proved to be an effective solution to compensate for such disturbances...
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