Variable-frequency synchronous motor drives for electric vehicles
- Univ. of Manchester Inst. of Science and Technology (United Kingdom). Dept. of Electrical Engineering and Electronics
- Sydney Univ., New South Wales (Australia). Dept. of Electrical Engineering
The performance capability envelope of a variable-frequency, permanent-magnet synchronous motor drive with field weakening is dependent upon the product of maximum current and direct-axis inductance. To obtain a performance characteristic suitable for a typical electric vehicle drive, in which short-term increase of current is applied, it is necessary to design an optimum value of direct-axis inductance. The paper presents an analysis of a hybrid motor design which uses a two-part rotor construction comprising a surface-magnet part and an axially laminated reluctance part. This arrangement combines the properties of all other types of synchronous motor and offers a greater choice of design variables. It is shown that the desired form of performance may be achieved when the high-inductance axis of the reluctance part is arranged to lead the magnet axis by 90{degree} (elec.).
- OSTI ID:
- 372174
- Report Number(s):
- CONF-9510203-; ISSN 0093-9994; TRN: IM9641%%251
- Journal Information:
- IEEE Transactions on Industry Applications, Vol. 32, Issue 4; Conference: IEEE/Industrial Application Society conference, Orlando, FL (United States), 8-12 Oct 1995; Other Information: PBD: Jul-Aug 1996
- Country of Publication:
- United States
- Language:
- English
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