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Energies 2017, 10(7), 995; https://doi.org/10.3390/en10070995

Low Voltage Ride-through Scheme of the PMSG Wind Power System Based on Coordinated Instantaneous Active Power Control

Ministry of Education Key Laboratory of Modern Power System Simulation Control and Green Power Technology, Northeast Dianli University, Jilin 132012, China
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Received: 7 April 2017 / Revised: 7 July 2017 / Accepted: 10 July 2017 / Published: 14 July 2017
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

Fast control DC-link voltage is the key to enhance Low-Voltage Ride-Through (LVRT) for the Permanent Magnet Synchronous Generator (PMSG). When grid voltage dips deeply, by the constraint of the capacity of the grid-side converter and reactive power support by the grid-code required, the active power capacity of the grid-side converter will be reduced. Therefore, it cannot stabilize the DC-link voltage relying solely on the grid-side converter. This paper proposes an improved control strategy to combine generator-side and grid-side converter active power. Reactive power support and negative sequence feed-forward compensation are also considered in the paper. The effectiveness of the control strategy is verified by both simulation and the experimental results. View Full-Text
Keywords: permanent magnet synchronous generator (PMSG); low-voltage ride-through (LVRT); coordinate active power control; unbalanced voltage sag permanent magnet synchronous generator (PMSG); low-voltage ride-through (LVRT); coordinate active power control; unbalanced voltage sag
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Zhong, C.; Wei, L.; Yan, G. Low Voltage Ride-through Scheme of the PMSG Wind Power System Based on Coordinated Instantaneous Active Power Control. Energies 2017, 10, 995.

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