Electricity: motive power systems – Switched reluctance motor commutation control
Patent
1985-04-19
1986-09-16
Shoop, Jr., William M.
Electricity: motive power systems
Switched reluctance motor commutation control
318138, 310 68R, 310113, H02K 2912
Patent
active
046124861
ABSTRACT:
A semiconductor electric motor is disclosed which comprises: an outer housing; a cylindrical magnetic core fixedly mounted to the inside of the outer housing; polyphase armature coils mounted upon the magnetic core; a rotative shaft rotatably held by bearings mounted upon the outer housing; a rotor which is fixed to the rotative shaft and which is excited by exciting coils mounted thereon in such a way that the outer surface is polarized south and north at regular intervals and that the produced magnetic field penetrates through the armature coils; a first core made from a magnetic material and centrally provided with a hole which is made stationary relative to the rotative shaft extending through the hole; a second core made from a magnetic material and fixed inside the outer housing; the first and second cores cooperating with secondary and primary coils respectively mounted upon the first and second cores to constitute a rotary transformer; an RF oscillator consisting of a semiconductor circuit and acting to supply RF alternating current to the primary coil; an electric circuit for rectifying the output from the secondary coil and supplying it to the exciting coils; and an electric current supply control circuit for controlling the electric current supplied to the armature coils to produce a torque in one direction.
REFERENCES:
patent: 3445697 (1969-05-01), Costa
patent: 4080553 (1978-03-01), Lyman
patent: 4256997 (1981-03-01), Brusaglino et al.
patent: 4385249 (1983-05-01), Fukushima
Ban Itsuki
Nakajima Akihiro
Ro Bentsu
Shoop Jr. William M.
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