Title :
Higher performance from brushless spindle motors with magnetic flux control (GFC)
Author :
Geraldi, Charles F.
Author_Institution :
Parvex Servo Syst., New York, NY, USA
fDate :
Sept. 28 1991-Oct. 4 1991
Abstract :
The author presents a novel design of brushless magnet motors where the magnetic flux is controlled by the gradual flux control (GFC) method. This novel technique in magnetic field weakening allows a wide speed range at constant power (1750 to 7000 r.p.m.). Compared to the classical induction motor, the GFC motor is two times smaller and presents high positioning stiffness and a higher efficiency. Spindle drive, axis drives, and energy recovery are fully compatible on the same power supply. This method allows for expanded operation at constant power up to a ratio of 4:1 between the maximum speed and the base speed.<>
Keywords :
design engineering; electric motors; machine control; machine theory; magnetic flux; position control; brushless spindle motors; design; drives; efficiency; energy recovery; gradual flux control; machine control; magnetic field weakening; magnetic flux control; positioning stiffness; power supply; Brushes; Brushless DC motors; Brushless motors; DC motors; Induction motors; Magnetic flux; Permanent magnet motors; Servomotors; Synchronous motors; Torque;
Conference_Titel :
Industry Applications Society Annual Meeting, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Dearborn, MI, USA
Print_ISBN :
0-7803-0453-5
DOI :
10.1109/IAS.1991.178042
