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Homopole type AC generator
Homopole type AC generator
An improvement of a homopole type AC generator which is of homopole type arrangement and is adapted to generate alternating current (AC) depending upon interlinkaging operation of magnetic fluxed comprising a rotor magnet rotatable by a roational force from outside, a yoke through which magnetic fluxes flow from the N pole of the rotor magnet to the S pole and forms a part of a magnetic circuit, and generating coils provided at positions interlinking with the magnetic circuit.
BACKGROUND OF THE INVENTION
The present invention generally relates to brushless alternator, and in particular to an improvement of a homopole type brushless ac generator which is of homopole type arrangement and is adapted to generate alternating current ( AC) depending upon interlinking operation of magnetic fluxes, wherein a magnetic circuit connecting two rotary pole pieces which are provided on a rotary drive shaft at both sides of a rotor magnet is disconnected to eliminate a harmful magnetic circuit opposing the action of generation.
PRIOR ART
The applicant proposed in the commonly owned U.S. Pat. No. 3,668,448 entitled "homopole type ac alternator" a homopole type AC generator comprising a rotor magnet rotatable by a rotational force from outside, a yoke through which magnetic fluxes flow from the N pole of the rotor magnet to the S pole and forms a part of a magnetic circuit, and generating coils provided at positions interlinking with the magnetic circuit. The generating coils induce AC voltage so as to effect AC generation as the magnetic fluxes make magnetic engagement and disengagement with or from the generating coils during the rotation of the rotary magnet.
SUMMARY OF THE INVENTION
Accordingly, it is an general object of the present invention to provide a novel and useful improved homopole type AC generator wherein the problems aforementioned are eliminated.
Another and more specific object of the present invention is to provide a homopole type AC generators comprising a rotor magnet rotatable by a rotational force from outside, front and rear yoke pairs surrounding the rotor magnet in a displaced relation such that the front yoke pair and the rear yoke pair are respectively displaced to a front side and rear side of the rotor magnet along a rotary axis of the rotor magnet, the front and rear yoke pairs respectively forming front and rear magnetic circuits through which a magnetic flux is alternatively guided from one of the magnetic poles to the other of the magnetic poles responsive to the rotation of the rotor magnet, wherein the front and rear magnetic circuits are made independently to achieve an effective generation.
An improvement of a homopole type AC generator which is of homopole type arrangement and is adapted to generate alternating current (AC) depending upon interlinkaging operation of magnetic fluxed comprising a rotor magnet rotatable by a roational force from outside, a yoke through which magnetic fluxes flow from the N pole of the rotor magnet to the S pole and forms a part of a magnetic circuit, and generating coils provided at positions interlinking with the magnetic circuit.
BACKGROUND OF THE INVENTION
The present invention generally relates to brushless alternator, and in particular to an improvement of a homopole type brushless ac generator which is of homopole type arrangement and is adapted to generate alternating current ( AC) depending upon interlinking operation of magnetic fluxes, wherein a magnetic circuit connecting two rotary pole pieces which are provided on a rotary drive shaft at both sides of a rotor magnet is disconnected to eliminate a harmful magnetic circuit opposing the action of generation.
PRIOR ART
The applicant proposed in the commonly owned U.S. Pat. No. 3,668,448 entitled "homopole type ac alternator" a homopole type AC generator comprising a rotor magnet rotatable by a rotational force from outside, a yoke through which magnetic fluxes flow from the N pole of the rotor magnet to the S pole and forms a part of a magnetic circuit, and generating coils provided at positions interlinking with the magnetic circuit. The generating coils induce AC voltage so as to effect AC generation as the magnetic fluxes make magnetic engagement and disengagement with or from the generating coils during the rotation of the rotary magnet.
SUMMARY OF THE INVENTION
Accordingly, it is an general object of the present invention to provide a novel and useful improved homopole type AC generator wherein the problems aforementioned are eliminated.
Another and more specific object of the present invention is to provide a homopole type AC generators comprising a rotor magnet rotatable by a rotational force from outside, front and rear yoke pairs surrounding the rotor magnet in a displaced relation such that the front yoke pair and the rear yoke pair are respectively displaced to a front side and rear side of the rotor magnet along a rotary axis of the rotor magnet, the front and rear yoke pairs respectively forming front and rear magnetic circuits through which a magnetic flux is alternatively guided from one of the magnetic poles to the other of the magnetic poles responsive to the rotation of the rotor magnet, wherein the front and rear magnetic circuits are made independently to achieve an effective generation.