Title :
Regenerative power control for VVVF motor drive (critical braking method applied to the elevator)
Author :
Nomura, Wasami ; Ikejima, H. ; Morita, Shigetaka ; Watanabe, Eiki
Author_Institution :
Mitsubishi Electr. Corp., Osaka, Japan
Abstract :
A method for braking induction motors is described. The method, called critical braking, consumes the regenerative power within the rotor and stator windings of the induction motor itself. Critical braking is realized by maintaining the induction motor slip at a constant value at which the regenerative power and the consumed power in the windings balance. A practical control system is described that applies this principle to a motor drive for elevator applications
Keywords :
angular velocity control; braking; electric drives; induction motors; lifts; machine windings; consumed power; control system; critical braking; elevator; lifts; motor drive; motor slip; regenerative power; rotor; stator windings; velocity control; Angular velocity; Elevators; Equations; Equivalent circuits; Induction motors; Motor drives; Power control; Rotors; Torque control; Traction motors;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1988. APEC '88. Conference Proceedings 1988., Third Annual IEEE
Conference_Location :
New Orleans, LA
DOI :
10.1109/APEC.1988.10556
