Method and apparatus for hybrid direct-indirect control of a swi

Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems

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318138, 318254, 318696, H02K 1910, H02P 800

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active

056379749

ABSTRACT:
A device for controlling a 4-phase 8-stator pole/6 rotor pole switched reluctance machine includes a microcontroller, a converter circuit for energizing the stator windings of the switched reluctance machine, four Hall sensors adapted to detect rotor position to a resolution of 15 mechanical degrees, a phase current sensor, and a phase voltage sensor. The controller is programmed to implement a rotor position estimator for generating an estimated rotor position signal corresponding to the position of the rotor. The estimator is implemented using an observer-based state variable motor model, and is responsive to the measured phase voltage, the measured phase current, and the transitions generated by the Hall sensors. The estimated rotor position signal is determined by running the observer model in parallel with the physical motor. The observer uses a phase current error signal, and a position error signal generated using the low resolution position transitions, to force the estimated rotor position state variable to converge. The generated estimated rotor position signal is substantially continuously-valued and is used by a commutation means programmed in the controller for controlling commutation of the machine phases.

REFERENCES:
patent: 4680518 (1987-07-01), Kurakake et al.
patent: 4707650 (1987-11-01), Bose
patent: 4739240 (1988-04-01), MacMinn et al.
patent: 4772839 (1988-09-01), MacMinn et al.
patent: 4933620 (1990-06-01), MacMinn et al.
patent: 4959596 (1990-09-01), MacMinn et al.
patent: 5097190 (1992-03-01), Lyons et al.
patent: 5107195 (1992-04-01), Lyons et al.
patent: 5140243 (1992-08-01), Lyons et al.
patent: 5140244 (1992-08-01), Lyons et al.
patent: 5214365 (1993-05-01), Bahn
patent: 5325026 (1994-06-01), Lyons et al.
Elimination of Discrete Position Sensor and Current Sensor in Switched Reluctance Motor Drives; Ehsani, et al.,; IEEE Transactions on Industry Applications, vol. 28, No. 1, Jan./Feb. 1992, pp. 128-135.
Dual-Decay Converter for Switched Reluctance Motor Drives in Low-Voltage Applications; Ehsani, et al.; IEEE Transactions on Power Electronics, vol. 8, No. 2, Apr. 1993, pp. 224-230.
A Sliding Mode Observer Based Controller for Switched Reluctance Motor Drives, Husain, et al.,; 1994 IEEE; pp. 635-642.
New Modulation Encoding Techniques for Indirect Rotor Position Sensing in Switched Reluctance Motors; Ehsani et al.; IEEE Transactions on Industry Applications, vol. 30, No. 1, Jan./Feb. 1994; pp. 85-90.
Rotor Position Sensing in Switched Reluctance Motor Drives by Measuring Mutually Induced Voltages; Husain, et al.; IEEE Transactions on Industry Applications, vol. 30, No. 3, May/Jun. 1994, pp. 665-672.

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