Electricity: single generator systems – Generator control – With armature or primary circuit control
Patent
1995-08-04
1998-01-06
Stephan, Steven L.
Electricity: single generator systems
Generator control
With armature or primary circuit control
322 95, 318701, 363 20, H02P 900
Patent
active
057059187
ABSTRACT:
A switched reluctance generator is controlled such that flux growth in a phase winding occurs at a faster rate during the initial part of the phase inductance cycle and at a second, slower rate during the subsequent part of the phase inductance cycle. The difference between flux growth and decay may be achieved either by applying different voltages during the two parts of the phase inductance cycle or by applying the same voltage over only part of the phase winding during the initial part of the phase inductance cycle and then applying that voltage across the phase winding thereafter. It is advantageous to make the increase in flux more rapid than its decay because minimizing the length of time that the flux is present while the phase inductance is rising will minimize the production of unwanted (motoring) torque.
REFERENCES:
patent: 4682093 (1987-07-01), Murphy et al.
patent: 5327069 (1994-07-01), Radun et al.
patent: 5548196 (1996-08-01), Lim
patent: 5548964 (1996-08-01), Stephenson et al.
V. R. Stefanovic etal., SRM Inverter Topologies: A Comparative Evaluation, paragraph 3.3; FIG. 1C, Oct. 1990, vol. 2, No. Meeting 25, Oct. 7-12, 1990, Conference Record of the Industry Applications Society Annual Meeting, Seattle.
Bimal K. Bose, Control System for Switched Reluctance Motor, U.S. Pat. No. 4,707,650, Nov. 17, 1987.
Ponomarenko Nicholas
Stephan Steven L.
Switched Reluctance Drives Ltd.
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