Electricity: motive power systems – Synchronous motor systems – Hysteresis or reluctance motor systems
Patent
1997-05-23
1998-12-22
Ro, Bentsu
Electricity: motive power systems
Synchronous motor systems
Hysteresis or reluctance motor systems
318254, 318432, 318702, H02P 505
Patent
active
058523553
ABSTRACT:
A switched reluctance machine run as a servo-motor has its torque ripple reduced by shaping the chopping current by which the rotor is rotated relative to the stator. The shaping includes reducing the rate of change of torque with respect to time such that the magnitude of the torque ripple is reduced and therefore more easily rejected by the control function of the machine controller.
REFERENCES:
patent: 4645991 (1987-02-01), Ban et al.
patent: 4670696 (1987-06-01), Byrne et al.
patent: 4707650 (1987-11-01), Bose
patent: 4961038 (1990-10-01), MacMinn
"Torque Ripple Minimization in Switched Reluctance Motor Drives by PWM Current Control", by Husian and Ehsani, IEEE Transactions on Power Electronics, vol. 11, No. 1, Jan. 1996.
"Computer-optimised current waveforms for switched-reluctance motors", by Lovatt and Stephenson, IEE Proc.-Electr. Power Appl., vol. 141, Mar. 1994, pp. 45-51.
"The Characteristics, Design and Applications of Switched Reluctance Motors and Drivers", by Stephenson and Blake, presented at the PCIM '93 Conference and Exhibition at Nurnberg, Germany, Jun. 21-24, 1993.
"The Design and Performance of a Multiphase Switched Reluctance Drive", by Pollock and Williams, EPE Aachen, 1989, pp. 29-34.
"Feedback Linearizing Control of Switched Reluctance Motors", by Ilic'-Spong, Marino, Peresada and Taylor, IEEE Transactions on Automatic Control, vol. AC-32, No. 5, May 1987, pp. 371-379.
"Three-Phase Switched Reluctance Motor Design to Reduce Torque Ripple", by Wallace and Taylor, Georgia Institute of Technology, School of Electrical Engineering, Atlanta, Georgia, pp. 783-787.
"Digital Control of Dynamic Systems", by Franklin, Powell and Workman, Addison-Wesley Publishing Company, Second Edition, pp. 581-592.
Ro Bentsu
Switched Reluctance Drives Limited
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