Research of doubly-fed machine vector control

This paper presents a double-fed motor speed sensor less control method of simple, through the detection of the rotor current, rotor voltage and rotor current control of the same phase or reversed. Double-fed speed, the control rotor voltage vector and rotor vector always maintain the same phase (corresponding to super-synchronous) or reversed-phase (corresponding to sub-synchronous), thereby ensuring the rotor side of the power factor is 1, so that can greatly reduce the rotor side of the Variable frequency capacity. In this paper, the feasibility of this program is for the conduct of system simulation and experimental validation.