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- W2359779912 abstract "In order to improve the wave of voltage,a delay signal cancel(DSC) method has been used to distinguish and control the positive and negative sequence components.However,while reinforcing the voltage waveform,the method increases the imbalance of the current,which results in seriously neutral-point voltage oscillating,under the space vector pulse width modulation(SVPWM).Thus,impact of the negative sequence current to neutral-point voltage oscillation is calculated.The results show that the neutral-point control ability could be increased or decreased with the negative sequence component increasing,which is mostly depended on the power factor.When the modulate proportion is bigger than 0.5,the neutral-point control ability can be descend to zero because of the inconsonance between the power factor and negative sequence gene.Moreover,the boundary of the ability to control the unbalance by controlling the redundant voltage small vectors is found.Therefore the neutral-point control SVPWM is built.Plus,a integrate control strategy for three-level neutral-point clamped(NPC) voltage source inverter with unbalanced load based on distinguishing and controlling the positive and negative sequence components by DSC is put forward.Simulation exhibit that by the presented method,the negative sequence voltage can be restrained,and the negative sequence current makes the neutral-point unbalanced,while the voltage fluctuation at the neutral-point is controlled by the integrate control strategy.It is proved that under the integrated control strategy,three-level NPC voltage source inverter(VSI) performs well with unbalance load." @default.
- W2359779912 created "2016-06-24" @default.
- W2359779912 creator A5028717386 @default.
- W2359779912 date "2013-01-01" @default.
- W2359779912 modified "2023-09-23" @default.
- W2359779912 title "Integrate Control Strategy for Three-level Neutral-point Clamped Voltage Source Inverter with Unbalanced Load" @default.
- W2359779912 hasPublicationYear "2013" @default.
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