Abstract: A claw-pole motor according to the present invention has the maximum occupancy ratio of a wound wire by using a rectangular electric wire for the annular coil of a claw-pole-type motor, winding the rectangular electric wire into an almost analogous shape with the cross section of a wound-wire space and setting the rectangular electric wire. Moreover, a lead-out portion is formed by keeping the shape of a lead-out portion as a rectangular wire, the terminal portion of the lead-out portion is deformed into a predetermined connector shape by appropriate processing method and a insulating coating is removed. Thereby, it is possible to greatly decrease man-hours of a terminal connecting portion.

Abstract: A three-phase permanent magnet brushless motor comprises a stator having three-phase windings, and a rotor having a permanent magnet with a plurality of poles for serving as a field magnet. The stator comprises a stator core which includes a powder core that is compacted at a high density in at least teeth thereof. A combination of the number of magnetic poles of the rotor with the number of slots of the stator satisfies a condition that a least common multiple of the number of slots and the number of magnetic poles is 60 or more in a region in which the number of magnetic poles is 16 or less, and the number of slots is 12 or less. The powder core is made by compacting magnetic powders to have a green density of 7.5 g/cm3 or higher.

Abstract: It is desired to design a coreless motor in which a gap size is set to be as small as possible, and a magnet having a large energy product is used in order to increase the gap magnetic flux density since the coreless motor has no iron core so that the magnetic flux density is small in the gap part. A rotor core of the motor has a permanent magnet rotor which is formed by a compression molding means, and which is formed of a compact formed by molding a powder material, the compact comprising a bond magnetic portion mainly composed of a binder and a magnetic powder, and a soft magnetic portion mainly composed of a binder and a soft magnetic powder, the bond magnetic portion having magnetic poles having at least one surface which is mechanically bonded to the soft magnetic portion, in order to solve the inherent problems.

Abstract: In a multiple phase claw pole type motor which includes: a plurality of claw poles including a claw portion extending in an axial direction and having a magnetic pole surface facing a rotor in a state of being separated from the rotor by a small gap, a radial yoke portion extending radially outwardly from this claw portion, and an outer peripheral yoke extending from this radial yoke portion in the same direction as the direction of extension of the claw portion; a stator core formed by alternately placing the claw poles in a circumferential direction so that a distal end of each claw portion faces the outer peripheral yoke of an adjacent one of the claw poles; and a stator constructed by sandwiching an annular coil with the adjacent claw poles of this stator core, a multiple phase claw pole type motor characterized in that the claw poles are formed by compacting a magnetic powder and are formed of a magnetic compact having a DC magnetizing property of its flux density becoming 1.

Abstract: A three-phase claw-pole-type motor having claw poles easily manufacturable and having high efficiency. A plurality of claw poles are provided each of which has a claw portion, a radial yoke portion extending radially outwardly and perpendicularly from the claw portion, and an outer peripheral yoke extending from the radial yoke portion in the same direction as the direction of extension of the claw portion. A stator is constructed by interposing an annular coil between the craw poles. The claw poles are formed by compacting a magnetic powder of 2 teslas or higher.

Abstract: An angle-torque sensor has: a torque detection coil that detects a change in state quantity in a mechanism to detect a relative angle made between input axis and output axis of a torsion bar to be twisted by a torque; an angle detection coil that detects a change in state quantity in a mechanism to detect a rotation angle of a reduction axis which rotates with a rotation being transmitted from the input axis or output axis and being reduced by a reduction mechanism; a torque detection circuit that detects the relative angle from the output of the torque detection coil; and an angle detection circuit that detects the rotation angle from the output of the angle detection coil.

Abstract: An electric rotating machine having permanent magnets comprising a rotor having a plurality of permanent magnets, a stator iron core disposed in opposite relation with the rotor, and a stator winding wound around the stator core, wherein the stator core is constituted by a yoke and a plurality of teeth portions disposed to the yoke. The teeth portions are projected towards the inner periphery of the rotor. The teeth portions is made of amorphous magnetic material.

Abstract: A fluid-passage built-in type electrical rotating machine, which comprises a rotor fixed to a rotating shaft by means of a bearing; a stator in rotating relation to the rotor with a gap therebetween; a housing surrounding the stator; a pump turbine, fixed to one end of the rotating shaft, for circulating fluid in the electrical rotating machine; a first end bracket fixed to one end of the housing; and a second end bracket fixed to the other end of the housing. The first end bracket has a suction port for suctioning fluid into the electrical rotating machine, and the second end bracket has a discharging port for discharging fluid from the electrical rotating machine.

Abstract: A power controller for a vehicle controls the supply of power to an electrical load when the vehicle's engine is stopped or a key switch is turned off, so as to prevent lowering of the remaining capacity of a main battery. The control system has a control portion which controls operation of a power generator and an electrical load mounted on an automotive vehicle. The control system also includes remaining capacity measuring means for measuring the remaining capacity of a battery. The control portion drives a predetermined power load when the engine is stopped or when a key switch is held OFF, and operation of the power load is stopped when a remaining capacity of the battery measured by the remaining capacity measuring means becomes smaller than a predetermined value.

Abstract: The present invention is characterized by a hybrid car comprising a motor generator mechanically connected with the crank shaft of an internal combustion engine for driving a car wherein the internal combustion engine is started by electric power supplied by a battery and power is generated by rotation from the internal combustion engine to charge the battery, an inverter for controlling the drive and power generation of the motor generator, and a control circuit for controlling the inverter, this hybrid car further characterized in that the motor generator is driven by battery power to start the internal combustion engine, and after the internal combustion engine has started, the battery is charged by the generator mode operation of the motor generator using the power of the internal combustion engine, wherein a step-down chopper circuit is provided between the battery and the inverter, and step-down control is provided to ensure that the power generation voltage will reach the level of the battery charging

Abstract: An angle-torque sensor has: a torque detection coil that detects a change in state quantity in a mechanism to detect a relative angle made between input axis and output axis of a torsion bar to be twisted by a torque; an angle detection coil that detects a change in state quantity in a mechanism to detect a rotation angle of a reduction axis which rotates with a rotation being transmitted from the input axis or output axis and being reduced by a reduction mechanism; a torque detection circuit that detects the relative angle from the output of the torque detection coil; and an angle detection circuit that detects the rotation angle from the output of the angle detection coil.

Abstract: An angle-torque sensor has: a torque detection coil that detects a change in state quantity in a mechanism to detect a relative angle made between input axis and output axis of a torsion bar to be twisted by a torque; an angle detection coil that detects a change in state quantity in a mechanism to detect a rotation angle of a reduction axis which rotates with a rotation being transmitted from the input axis or output axis and being reduced by a reduction mechanism; a torque detection circuit that detects the relative angle from the output of the torque detection coil; and an angle detection circuit that detects the rotation angle from the output of the angle detection coil.

Abstract: A magnetostriction-type torque sensor has a rotating shaft having magnetostrictive properties and first and second coils which each constitute three or more closed loops. For each coil, the closed loop is disposed in a concentric relationship (a concentric circle located on a plane perpendicular to the rotating shaft) with the rotating shaft. Further, the direction of magnetostrictive properties of the rotating shaft detected by the first coil is made different from the direction of magnetostrictive properties of the rotating shaft detected by the second coil.

Abstract: A synchronous motor controlling apparatus which can be applied to the carrier synchronized position estimating method as well and have protection-related functions such as detection of inverted magnetic pole position of a motor in a simple method, and an electric motor using the synchronous motor control apparatus. A controller controls a voltage applied to an AC motor with a PWM signal. A magnetic pole position detector of the controller detects a current of the AC motor to estimate a pole position of the AC motor. A fault detector detects a fault in the estimated magnetic position of the AC motor.

Abstract: In order to propose an inexpensive and highly precise motor controller, it is structured so as to detect the position of the rotor on the basis of the difference between the real current differential vector and the reference current differential vector, thereby control the motor without using a rotation position sensor.

Abstract: A power controller for a vehicle can operate electrical load upon stopping of engine or turning OFF of a key switch, and lowering of remaining capacity of a main battery can be prevented. The control system has a control portion controlling operation of a power generator and an electrical load mounted on an automotive vehicle. The control system also includes remaining capacity measuring means for measuring a remaining capacity of a battery. The control portion drives a predetermined power load when an engine is stopped or a key switch is held OFF, and operation of the power load is stopped when a remaining capacity of the battery measured by the remaining capacity measuring means becomes smaller than a predetermined value.

Abstract: A composite power transmission mechanism 10, comprising the combination of a planetary gear unit 15 and a differential planetary gear mechanism 16, wherein a planetary gear is connected with a drive shaft of a vehicle, while other three gears let the shafts of the motor 12, a motor 13 and an engine 11 rotate respectively. The drive shaft of the vehicle is made to rotate by means of the planetary gear of the composite power transmission mechanism; since the rotation of different sources of a driving force, i.e., those of the motor 12, the motor 13 and the engine 11, can be transmitted to one another by only one meshing of the gears, the mechanical loss that is dependent on the number of times of the meshing of the gears can be reduced to a minimum.

Abstract: A power controller for a vehicle can operate electrical load upon stopping of engine or turning OFF of a key switch, without lowering of remaining capacity of a main battery. The control system has a control portion controlling operation of a power generator and an electrical load mounted on an automotive vehicle. The control system also includes remaining capacity measuring means for measuring a remaining capacity of a battery. The control portion energizes a predetermined power load when an engine is stopped or a key switch is held OFF, and operation of the power load is stopped when a remaining capacity of the battery measured by the remaining capacity measuring means becomes smaller than a predetermined value.

Abstract: A provide a position-sensorless motor control apparatus comprises a salient-pole AC motor 2, a PWM inverter 3 for applying voltage to the AC motor 2, and a controller 1 for controlling the PWM inverter 3 by means of PWM signals, wherein the controller 1 has a position estimation means 11 which detects motor inductance in the pre-determined direction to the vector direction of the current that flows through the AC motor 2 and estimates the AC motor's rotor position based on the motor inductance.

Abstract: A motor control apparatus includes an inverter for applying voltage to a synchronous motor and a control apparatus 4 for calculating a voltage instruction value to be applied by a PWM signal. There are provided a current difference sensing unit of the synchronous motor, a current difference calculation unit for calculating a current change attributed to the voltage applied, and a position sensing unit for estimating a counter electromotive force direction according to the current change sensed by the current change sensing unit and the current change calculated by the current difference calculation unit. The magnetic pole position of the rotor of the synchronous motor is estimated according to the counter electromotive force direction estimated by the position sensing unit and the voltage applied to the synchronous motor is controlled according to the estimated magnetic pole position.