TY - JOUR
AU - Savaghebi, Mehdi
AB - Preservation of wind turbines (WTs) grid‐connectivity during grid faults and grid‐code (GC) compliant reactive power injection at PCC during voltage drops is an imperative task to perform in modern WTs. This is known as the low‐voltage ride‐through (LVRT) capability of WTs, emerging as an integral GC requirement. Despite current provision of LVRT in PMSG‐based WTs, there is still likelihood of grid voltage drops leading to adverse effects in wind power plants. In this research, a peak current limiter has been designed for machine‐side converter (MSC) of the PMSG‐based WT to execute GC requirements in a reliable manner. This scheme is capable of preventing over‐voltage across the dc link of back‐to‐back (BTB) converter and over‐current in the grid‐side converter (GSC). A dual current controller is utilised for regulating GSC positive‐ and negative‐sequence components. A prominent feature of the proposed controller is its simplicity and applicability to available BTB control systems. On the other hand, the WT mechanical system operates as a storage device during voltage drops, eliminating the need for installing external apparatus such as energy storage systems and braking choppers across the dc‐link. Simulation results conclude the reliable operation of the WT equipped with MSC current limitation scheme during grid faults.
TI - Current limitation for the machine side converter of permanent magnet synchronous generator wind turbines during grid faults
JF - IET Renewable Power Generation
DO - 10.1049/iet-rpg.2019.1246
DA - 2020-12-01
UR - https://www.deepdyve.com/lp/wiley/current-limitation-for-the-machine-side-converter-of-permanent-magnet-0vuhGigH6R
SP - 3448
EP - 3456
VL - 14
IS - 17
DP - DeepDyve
ER -