Patent application number | Description | Published |
20090001843 | ROTATING ELECTRICAL MACHINE - A rotating electrical machine includes: a claw pole stator constituted with a stator core that includes a plurality of claw poles and a stator coil wound inside the stator core; and a rotor rotatably disposed at a position facing opposite the claw poles. The stator core is constituted of split blocks each corresponding to at least one of magnetic pole pairs each made up with two claw poles assuming different magnetic polarities when an electric current is supplied to the stator coil. | 01-01-2009 |
20090102314 | Rotating electrical machinery - A rotating electrical machine includes: a stator that includes two stator stages each constituted with a plurality of claw poles extending toward opposite sides along an axial direction at alternate positions and a ring-shaped core back that forms a magnetic path between the claw poles, the two stator stages being stacked over along the axial direction; a stator winding formed by winding a coil in a ring shape and disposed in a space enclosed by the claw poles and the core back at each of the stator stages; and a rotor rotatably disposed at a position facing the claw poles of the stator, and: stator windings corresponding to a plurality of phases are disposed together at least at one of the two stator stages. | 04-23-2009 |
20110025162 | Rotating Electrical Machine - A rotating electrical machine, includes; a rotor in which a plurality of magnetic poles are provided in circumferential direction, and a stator within the rotor is disposed with a gap against the rotor, wherein; two stator magnetic poles are formed by winding coils in phase and by the stator core within 360° of electrical angle defined by the magnetic poles of the rotor; the coil turns that form respective stator magnetic poles have angular widths in circumferential direction of less than 180° of electrical angle; the coil turns that form the respective two stator magnetic poles are provided so as not to mutually overlap and are wound so that adjacent ones of the stator magnetic poles have mutually opposite polarities, and; in the stator, each winding of each coil consists of an external bridge wire, a turn portion, an internal bridge wire, and a turn portion in that order. | 02-03-2011 |
Patent application number | Description | Published |
20090230806 | ELECTRIC MOTOR - An electric motor comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 09-17-2009 |
20100194230 | Process of Manufacture and Manufacturing Device of Stator - An object of the present invention is to provide a small, high-power rotating electrical machine by suitably forming a distributed winding coil such that two stator magnetic poles each formed of in-phase coil turns are arranged within an electric angle of 360 degrees formed by magnetic poles of the rotor. The present invention provides a method for manufacturing a stator, the method including a first step of placing a distributed winding coil | 08-05-2010 |
20110018381 | ELECTRIC MOTOR - An electric motor comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 01-27-2011 |
20110144959 | FAST ANALYSIS METHOD OF STEADY-STATE FIELDS, FAST ANALYSIS PROGRAM OF STEADY-STATE FIELDS, AND RECORDING MEDIUM - A fast analysis method of steady-state fields performs arithmetic processing over plural time steps, performs transient analysis on the basis of an equation having a time derivative term, obtains a physical quantity of an analysis object, and includes the steps of reading input data including a time average width necessary to perform time averaging on the physical quantity, a phase width of a fundamental wave corresponding to the time average width, or a time step width necessary to perform the time averaging, and finite element modeling data of the analysis object by the arithmetic device; obtaining a time-averaged physical quantity using the time average width, the phase width of the fundamental wave, or the time step width by the arithmetic device; and obtaining a steady-state field of the physical quantity through a correction of the physical quantity using the time average quantity by the arithmetic device. | 06-16-2011 |
20110148241 | Electric Motor - An alternator comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 06-23-2011 |
20120043847 | ELECTRIC MOTOR - An alternator comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 02-23-2012 |
20120078559 | FAST STEADY STATE FIELD ANALYSIS METHOD, FAST STEADY STATE FIELD ANALYSIS APPARATUS, FAST STEADY STATE FIELD ANALYSIS PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM OF STORING ITS PROGRAM - In the fast steady state field analysis method, the following processes are executed in a computer. First, the physical quantity of the analysis object is calculated through transient analysis based on an analysis execution module in which a differential equation including the time-derivative term is made discrete. A time-averaged value of the calculated physical quantities of the analysis object that are present in a set time width is calculated. The physical quantity of the analysis object calculated in step | 03-29-2012 |
20130069473 | Electric Rotating Machine - An alternator comprising a rotor having plural magnetic poles in the circumferential direction; and a stator whose teeth are disposed opposite to the periphery of the rotor, with an air gap interposed between the rotor and the stator, wherein the coil conductors are wound on the stator so that two stator magnetic poles may be formed by two coil units of a phase wound around stator teeth within the range of 360 electrical degrees subtended by the magnetic poles of the rotor; each of the two coil units forming the stator magnetic poles spans an electrical angle less than 180 electrical degrees; the two coil turns forming the two stator magnetic poles are laid out so that they may not overlap each other; and the coil conductors are so wound that the adjacent stator magnetic poles exhibit opposite magnetic polarities. | 03-21-2013 |
20130082564 | ALTERNATOR FOR VEHICLE - An alternator for a vehicle includes: a rundel-type rotor including a cylindrical portion around which a field coil is wound, a pair of plate-shaped end plate portions which are arranged such that the end plate portions face both end surfaces of the cylindrical portion in the axial direction in an opposed manner, first claw portions which extend parallel to a rotary axis from one end plate portion, and second claw portions which extend parallel to the rotary axis from the other end plate portion, and a stator which is arranged on an outer peripheral side of the rotor with a rotary gap therebetween so as to face the rotor in an opposed manner, and has a laminated core on which an armature coil is wound. The between claw magnetic poles of the first and second claw portions is set to a optimum gap range to maximize output current. | 04-04-2013 |
20130187515 | Vehicular Alternating Current Generator - A vehicular alternating current generator includes a Lundell rotor and a stator. The Lundell rotor includes a cylindrical portion around which a field coil is wound; plate-shaped first and second end plate portions disposed on both end faces in an axial direction of the cylindrical portion so as to face each other; a plurality of first claw portions extending in parallel with a rotational axis in a direction from the first end plate portion to the second end plate portion; and second claw portions extending in parallel with the rotational axis in a direction from the second end plate portion to the first end plate portion, the second claw portions being disposed circumferentially and alternately relative to the first claw portions. The stator is disposed on an outer periphery of the rotor so as to face the rotor with a small rotational air gap there between. | 07-25-2013 |
Patent application number | Description | Published |
20090133912 | RESIN COMPOSITION AND HYBRID INTEGRATED CIRCUIT BOARD MAKING USE OF THE SAME - A substrate, a circuit board and a multilayer circuit board are provided which, although being made of an inorganic filler as a crushed product, are capable of providing a highly reliable hybrid integrated circuit because of having excellent adhesion to a metal plate or metal foil and exhibiting a high thermal conductivity. | 05-28-2009 |
20100027261 | LED LIGHT SOURCE UNIT - To provide an LED light source unit which is excellent in heat dissipation performance, able to prevent damage to LED and bright, and which has a long life. | 02-04-2010 |
20100164362 | METAL BASE CIRCUIT BOARD - Provided is a metal base circuit board having a new function of a light reflection in addition to the conventional printed circuit board function for mounting electronic parts. The metal base circuit board has a circuit arranged on a metal plate via an insulation layer. A white film is arranged at least one the insulation layer. | 07-01-2010 |
20130143981 | RESIN COMPOSITION, MOLDED OBJECT AND SUBSTRATE MATERIAL BOTH OBTAINED FROM THE RESIN COMPOSITION, AND CIRCUIT BOARD INCLUDING THE SUBSTRATE MATERIAL - To provide a resin composition having excellent thermal conductivity and excellent insulation reliability, a molded object, a substrate material, and a circuit board. [Solution] Provided is a resin composition which comprises an epoxy resin, a hardener, and an inorganic filler, wherein the epoxy resin and/or the hardener has a naphthalene structure, the inorganic filler comprises hexagonal boron nitride, and the inorganic filler accounts for 50-85 vol. % of the whole resin composition. Since a naphthalene structure, which imparts the satisfactory ability to wet the hexagonal boron nitride included in the inorganic filler, has been introduced into the epoxy resin and/or the hardener to heighten the inorganic-filler loading characteristics, this resin composition attains excellent heat dissipation properties, heat resistance, insulating properties, etc. | 06-06-2013 |