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Since low voltage ride-through (LVRT) was proposed, its improvements have never been stopped, especially the improvements for operation under unbalanced faults. In this paper, an overall control strategy is proposed to solve the problem that the output current quality and dc-link voltage quality cannot be guaranteed at the same time. For this propose, a current control method is employed to guarantee...
The rapid development of photovoltaic (PV) generation systems has made the low voltage ride-through (LVRT) techniques, which is stepping forward fast, more and more important. This paper presents a review of LVRT techniques for PV generation systems, which mainly focuses on the critical techniques of fault detection and grid synchronization, current control and dc-link voltage control under various...
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