Làm phiền down cho em bài báo này:
1. Variable speed drives evaluation test
http://ieeexplore.ieee.org/xpl/freea...rnumber=563885
2. Behavior of AC and DC drives during voltage sags with phase-angle jump and three-phase unbalance
http://ieeexplore.ieee.org/xpl/freea...rnumber=747388
cảm ơn.