Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1989-12-12
1991-10-22
Ro, Bentsu
Electricity: motive power systems
Switched reluctance motor commutation control
318700, 318721, 318722, H02P 700
Patent
active
050598767
ABSTRACT:
A brushless rotating electrical machine based on a novel rotatable transformer. The motor can operate on both AC or DC. The rotatable transformer, termed brushless power unit, transfers power to the rotating armature without any physical contact and the operation of the brushless power unit is independent of speed of armature. A sensor on the armature detects the position of the armature coils in relation to magnetic neutral axis and switches semiconductor switching devices located on the armature to reverse the direction of current in the armature coils to commutate the current and produce a continuous torque. The electronic commutation is also applied to polyphase AC machines to obtain brushless operation. DC excitation system for synchronous machines can obtain brushless operation using the brushless power unit.
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