Inspec keywords: machine testing; variable speed gear; asynchronous generators; machine control; AC-AC power convertors; rotors; machine theory; PWM power convertors; wind power plants; velocity control; electric current control; power control

Other keywords: doubly fed induction generator; grid-connected power system; back-to-back PWM voltage-source power converters; optimal speed tracking; rotor circuit; reactive power; vector-control scheme; performance characteristics; active power; variable-speed wind-energy generation; 7.5 kW

Subjects: Power and energy control; Power electronics, supply and supervisory circuits; Other power stations and plants; Power convertors and power supplies to apparatus; Asynchronous machines; Control of electric power systems; Current control; Velocity, acceleration and rotation control