Alternative to field-weakening of surface-mounted permanent-magnet motors for variable-speed drives
- Royal Inst. of Technology, Stockholm (Sweden)
Today the interest is increasing to use inverter-fed permanent-magnet (PM) synchronous motors in variable-speed drive applications. A problem is the difficulty to obtain a sufficiently large field-weakening range. Especially for surface-mounted permanent-magnet (SMPM) motors, having the highest power density in relation to the required magnet material, this problem is very pronounced. An alternative method is studied how to obtain a sufficiently wide field-weakening range. The basic idea is to connect different coil groups of the stator winding in different configurations. In this way an extension in the speed range is obtained comparable to the field-weakening range of asynchronous motor drives. The influences on the motor design are studied and an example of a SMPM motor design is presented together with possible switching arrangements.
- OSTI ID:
- 419500
- Report Number(s):
- CONF-9510203-; TRN: IM9706%%44
- Resource Relation:
- Conference: IEEE/Industrial Application Society conference, Orlando, FL (United States), 8-12 Oct 1995; Other Information: PBD: 1995; Related Information: Is Part Of Conference record of the 1995 IEEE Industry Applications Society, thirtieth IAS annual meeting. Volume 1; PB: 977 p.
- Country of Publication:
- United States
- Language:
- English
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