TY  - JOUR
AB  - Purpose– The purpose of this paper is to investigate a control strategy to fulfill low-voltage ride through (LVRT) requirements in wind energy conversion system (WECS). Design/methodology/approach– This paper considers an active front-end converter of a grid connected WECS working under grid fault conditions. Two strategies based on symmetrical components are studied and proposed: the first one considers control only for positive sequence control (PSC); the second one considered a dual controller for positive and negative sequence controller (PNSC). The performance of each strategy is studied on LVRT requirements fulfillment. Findings– This paper shows presents a control strategy based on symmetrical component to keep the operation of grid-connected WECS under unsymmetrical grid fault conditions. Research limitations/implications– This work is being applied to a 2 kVA laboratory prototype. The lab prototype emulates a grid connected WECS. Originality/value– This paper validate the PNSC strategy to LVRT requirements fulfillment by experimental results obtained for a 2 kVA laboratory prototype. PNSC strategy allows constant active power delivery through grid-voltage dips. In addition, the proposed strategy is able to grid-voltage support by injection of reactive power. Additional features are incorporated to PNSC: sequence separation method using delay signal cancellation and grid frequency identification using phase locked loop.
VL  - 33
IS  - 5
SN  - 0332-1649
DO  - 10.1108/COMPEL-09-2013-0305
UR  - https://doi.org/10.1108/COMPEL-09-2013-0305
AU  - Díaz Matías
AU  - Cárdenas-Dobson Roberto
PY  - 2014
Y1  - 2014/01/01
TI  - Dual current control strategy to fulfill LVRT requirements in WECS
T2  - COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering
PB  - Emerald Group Publishing Limited
SP  - 1665
EP  - 1677
Y2  - 2024/04/25
ER  -