An analysis and an operating method of switched reluctance motors based on a simple inductance representation

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:419528

Chiba, Akira ^[1]; Fukao, Tadashi ^[2]

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1. Science Univ. of Tokyo, Chiba (Japan)
2. Tokyo Inst. of Tech. (Japan)

In this paper, a mathematical analysis based on a simple model is carried out. The operating characteristics of switched reluctance motors fed by square waveform voltage are analyzed. Inductance variations with respect to the rotor rotational position is approximated with only a sinusoidal function and a constant. Square waveform voltage is approximated by a fundamental component only. Based on this simple representation, it is possible to analyze operating characteristics mathematically in normalized planes and to derive a general control method. It is found that there exists a particular voltage phase angle which realizes the maximum output per current. It was also found that the maximum output per voltage can be achieved at the another particular voltage phase angle. These characteristics are found to be very similar to those of synchronous reluctance motors. As a result of the analysis, an efficient operating method is proposed. These results are confirmed by a 6,000 r/min., 2kW prototype machine.

• OSTI ID: 419528
• Report Number(s): CONF-9510203--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CONTROL THEORY
ELECTRIC MOTORS
INVERTERS
MATHEMATICAL MODELS
POWER SUPPLIES
TORQUE