In this letter, a novel control system for the operation of a doubly fed induction generator (DFIG), feeding an unbalanced three-phase load is presented. The load unbalance is compensated using the front-end converter. The control system is based on two revolving axes, rotating at plusmnomegae, which are used to control the positive and negative sequence currents supplied by the front-end converter. Experimental results obtained from a 2-kW experimental prototype are presented and discussed in this letter.
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Pea et al. (2007) studied this question.
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