Title :
Performance simulation of a high-speed magnetic bearing two-phase drive for special applications
Author :
Mhango, LMC ; Perryman, R.
Author_Institution :
Greenwich Univ., London, UK
Abstract :
There are a number of special applications which require high-speed high-power motor drives. A typical example is a spindle drive which often operates at speeds in excess of 30,000 r/min. The majority of these drives are supported by air bearings whist magnetic bearings are used for essentially highly specialised applications. Most spindle drives use three-phase induction motors which are supplied by three-phase inverters. This paper describes the performance simulation of a two-phase motor drive that has been developed recently for a spindle drive application. The motor is supported by magnetic bearings and rotates at 30,000 r/min, developing 1.0 kW of shaft power. The advantages of using a two-phase drive with magnetic bearings rather than a three-phase drive are discussed. A comparison is presented between the use of magnetic and air bearings
Keywords :
induction motor drives; machine bearings; machine theory; magnetic devices; 1 kW; air bearings; applications; high-speed magnetic bearing; performance simulation; spindle drive; two-phase motor drive;
Conference_Titel :
Electrical Machines and Drives, 1995. Seventh International Conference on (Conf. Publ. No. 412)
Conference_Location :
Durham
Print_ISBN :
0-85296-648-2
DOI :
10.1049/cp:19950872