Mueangngoen, S. “A Unique Grid-flux-oriented Control Algorithm for Synchronization and Power Controls of a Doubly-Fed Induction Generator System”. Srinakharinwirot University Engineering Journal, vol. 13, no. 1, Aug. 2018, pp. 132-4, https://ph02.tci-thaijo.org/index.php/sej/article/view/141252.