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- W2381457691 abstract "When grid voltage is unbalanced,the negative sequence component of grid voltage leads to harmonics with twice as much as power frequency in DC side voltage of full power grid-connecting converters for direct drive permanent magnet synchronous generators(PMSG),and it will evidently affect the service life of capacitors at DC side of the converter and jeopardize stable operation of wind power generating units while such an operating condition is persistent.A mathematical model of the full power grid-connecting converter at grid side is built,and on the basis of taking the influence of grid-connecting impedance on active power into account,a control strategy,which takes the enhancement of DC side voltage stability as the object,is proposed.In the proposed control strategy,by means of ensuring no double-frequency oscillation in active power flow between DC side capacitor and grid-connecting converter the positive and negative current instructions are obtained,thus it is unnecessary to solve complex high-order matrix for the calculation of the instructions and there are not more variables to be led in as well.The effectiveness of the proposed voltage control strategy is verified by simulation results of direct drive PMSG.Comparing with traditional balanced control strategy,the proposed control strategy can effectively suppress the double-frequency oscillation in the active power transmitted to power grid while the DC side voltage stability control is implemented,thus the ability of uninterrupted secure and stable operation of direct drive PMSG under unbalanced grid voltage is improved." @default.
- W2381457691 created "2016-06-24" @default.
- W2381457691 creator A5040469723 @default.
- W2381457691 date "2012-01-01" @default.
- W2381457691 modified "2023-09-22" @default.
- W2381457691 title "A Control Strategy for Grid-Connecting Full Power Converter of Wind Power Generation System Under Unbalanced Grid Voltage" @default.
- W2381457691 hasPublicationYear "2012" @default.
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