[미국특허]
Non-interruptible power supply systems
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H02K-016/00
H02K-021/04
H02K-047/04
출원번호
US-0844597
(1977-10-25)
발명자
/ 주소
Roesel
Jr. John F. (Bradenton FL)
출원인 / 주소
Precise Power Corporation (Bradenton FL 02)
인용정보
피인용 횟수 :
38인용 특허 :
1
초록▼
A non-interruptible power system (NIPS) for generating polyphase A.C. of a substantially constant desired frequency and a substantially constant selected voltage, comprising: (A) a source of interruptible power and a motor energized thereby, (B) a novel generator for producing the desired polyphase
A non-interruptible power system (NIPS) for generating polyphase A.C. of a substantially constant desired frequency and a substantially constant selected voltage, comprising: (A) a source of interruptible power and a motor energized thereby, (B) a novel generator for producing the desired polyphase A.C. driven by the motor, the generator comprising a plurality of field cores each having a cylindrical surface with a layer of magnetizable permanent magnetic material thereon, cooperatively juxtaposed wound stators each with an excitation coil therein for magnetizing an adjacent layer of permanent magnetic material into a pattern of magnetic poles and at a high remanent flux density, modifying windings for changing the remanent flux density in such pole pattern, supplementing windings for energizing the excitation coil, and primary potential generating windings in slots in the stator, a source of exciter current, and electrical control means for the generator, (C) the generator producing the desired substantially constant frequency A.C. at the desired voltage regardless of variations in the motor speed and even for a brief period of time when the source of power to the motor is interrupted by converting a part of its rotational energy to A.C. output, and leading windings, alone, or with lagging windings, in each of the wound stators having the primary windings, the leading and lagging windings being placed in such positions that, in a three-stator generator, they will each generate a single phase A.C. potential from about 110°to 115°out of phase with the single phase A.C. generated by the primary windings in the same stator, but the A.C. potentials of the leading windings and lagging windings of one stator will each be synchronous with the single phase A.C. potential developed in the other stators\primary windings, thereby obtaining three phase A.C. having a low total harmonic distortion.
대표청구항▼
In a polyphase electrical generator capable of generating polyphase A.C. of a substantially constant selected frequency and a substantially constant selected voltage, in combination, a rotatable shaft having a coaxial cylindrical shell attached thereto, a plurality of field cores numerically corresp
In a polyphase electrical generator capable of generating polyphase A.C. of a substantially constant selected frequency and a substantially constant selected voltage, in combination, a rotatable shaft having a coaxial cylindrical shell attached thereto, a plurality of field cores numerically corresponding to the phases of the polyphase current and an exciter field core attached to the interior surface of the cylindrical shell, all of the cores comprising high permeability soft magnetic material and having a central cylindrical coaxial aperture with a layer of magnetizable permanent magnetic material applied to the face of the coaxial cylindrical aperture of the first mentioned field cores, a layer of permanent magnetic material magnetized to a pattern of poles applied to the face of the cylindrical aperture in the exciter field core, support means maintaining the shaft and the cylindrical shell for rotation thereon, the support means having non-rotatably attached thereto an elongated member disposed about and coaxial with the shaft and extending into the cylindrical shell, a plurality of slotted wound stators attached to the elongated member, each stator having an outer cylindrical surface slightly smaller in diameter than the apertures in the field cores and being spaced on the elongated support means so that each stator is juxtaposed and operatively aligned with a field core, each stator core comprising high permeability soft magnetic material, the stator core opposite the exciter field core having exciter windings therein for generating an A.C. when the exciter field rotates, the remaining stator cores having a first pair of slots with an excitation coil therein, slots spaced from the first slots having a modifying winding therein, a supplementing winding being wound between slots at about 60°and 240°in a clockwise direction from the first pair of slots, and potential output windings being wound in slots to the right side and to the left hand side of the diametral line through the first pair of slots so as to form a two pole winding, electrical control means for supplying both exciting AC from the exciter windings and electrical AC from the supplementing windings to each excitation coil of such magnitude and in such timed relation that a narrow magnetic field of high flux density is produced to cause a patterned magnetic field with magnetic poles to be formed in the layer of magnetizable permanent magnetic material in each juxtaposed field core, the electrical control means also supplying electrical current to the modifying windings in such timed relation and of such magnitude that the magnetic field thereof will modify the pattern of the magnetic poles in said layer of magnetic material to provide for a remanent flux strength such that the potential output windings of each stator sweeping through said patterned magnetic field will generate single phase A.C. of the selected frequency and the selected voltage, the combined potential output of all of the stators, apart from that of the exciter field core, constituting the desired polyphase alternating current.
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