A new sensorless drive method of Switched Reluctance Motors based on motor's magnetic characteristics

We propose a new sensorless drive method of Switched Reluctance Motor (SRM) based on motor's magnetic characteristics. Some drawbacks of the method using impressed voltage pulse at unenergized phases to detect the magnetic characteristic have been improved. The proposed method has the features:...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2001-07, Vol.37 (4), p.2831-2833
Main Authors: Guo, H.J., Takahashi, M., Watanabe, T., Ichinokura, O.
Format: Article
Language:English
Subjects:
Applied sciences
Control theory
Digital signal processing
Electric motors
Electrical engineering. Electrical power engineering
Electrical machines
Exact sciences and technology
Field programmable gate arrays
Hardware
Magnetic switching
Magnetism
Motors
Phase detection
Phases
Reluctance
Reluctance machines
Reluctance motors
Time measurements
Timing
Torque control
Voltage control
Voltage pulses
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Summary:We propose a new sensorless drive method of Switched Reluctance Motor (SRM) based on motor's magnetic characteristics. Some drawbacks of the method using impressed voltage pulse at unenergized phases to detect the magnetic characteristic have been improved. The proposed method has the features: only one unenergized phase has been injected by impressed voltage pulse, that simplifies both hardware and control algorithm, and a new idea to determining the injecting timing for impressed voltage pulse has been introduced, that extremely eliminates the negative torque caused by some residual currents. Because the proposed method is very simple, instead of expensive DSP, the entire experimental system has been implemented in an analog and digital circuit (FPGA: Field Programmable Gate Array).
ISSN:0018-9464
1941-0069
DOI:10.1109/20.951320