摘要:
Provided is a rotating electric machine that is capable of sufficiently cooling, by using a liquid coolant, electronic devices which are attached to a rotor. The rotating electric machine is equipped with: a stator for generating a rotating magnetic field; a rotatable rotor that is installed so as to face the stator; diode devices that are connected to coils wound on the rotor and arranged so as to rotate with the rotor; and a cooling structure for cooling the diode devices by means of a cooling oil which is supplied from the inner side in the radial direction with respect to the diode devices.
摘要:
A hybrid induction motor includes a motor casing; a rotational shaft rotatably coupled with the motor casing; an induction rotor rotated by being integrally coupled with the rotational shaft and having a rotor core and a conductor bar inserted in the rotor core; a stator having a hollow into which the induction rotor is inserted and installed with a certain length in a direction of the rotational shaft; a first magnetic rotor inserted between the stator and the induction rotor and coupled with the rotational shaft so as to be freely rotatable; a second magnetic rotor inserted between the stator and the induction rotor so as to be symmetrical with the first magnetic rotor and coupled with the rotational shaft so as to be freely rotatable; and a magnetic spacer inserted between the first and second magnetic rotors.
摘要:
A rotor for a line-start reluctance motor is provided to improve core area efficiency to make flux flow in one direction. The rotor for the line-start reluctance motor includes a core having an axis coupling hole in a coupling direction of a shaft, a plurality of bars formed in the periphery of the core, and a plurality of flux barriers, one and the other ends of the flux barriers approaching the bars formed in first and second areas facing each other at a predetermined angle on a central line of a first axis on a core plane vertical to the coupling direction, at least parts of the centers of the flux barriers passing through a third or fourth area between the first and second areas, surrounding the axis coupling hole at predetermined intervals.
摘要:
The invention relates to a rotor for an electric motor, especially an electric line-start motor, comprising spaces (4 to 7) which receive permanent magnets (10 to 13) and extend in an axial direction, and spaces (20 to 25) that accommodate conductor rods and extend in an axial direction. In order for the rotor to run as regularly as possible, the spaces (20 to 25) accommodating the conductor rods are provided with a substantially elongate cross-section in at least one sector of the rotor while being embodied in a curved manner along the longitudinal axis thereof in said sector when viewed from a cross-sectional perspective.
摘要:
A driving circuit for improving starting of a hybrid induction motor and its method includes a capacitor for operation electrically connected between a main coil and a auxiliary-coil, and a starting and current cutting-off means electrically connected with the capacitor for operation, applying a high starting current to a motor in starting, and cutting off the starting current when the motor is operated at a synchronous speed after the starting, so that a satisfactory starting characteristic can be obtained by increasing output under a low voltage state in starting, and effective operation can be performed by decreasing output under a normal operation state after the starting is completed.
摘要:
A line start reluctance synchronous motor comprises: a single phase stator arranged at an inner circumferential surface of a motor body and on which a main coil and a sub coil are wound; a magnet unit free-rotatably arranged along an inner circumferential surface of the stator in order to maintain an air gap with the stator; and a cage rotor provided with a rotation shaft at a center portion thereof to be rotatable along an inner circumferential surface of the magnet unit, provided with a cage bar at a peripheral portion thereof, and provided with magnetic barriers having the same pole numbers as the magnet unit.
摘要:
An induction motor is suggested with a permanent magnet rotor and a stator which is excited electromagnetically by an alternating field, whereby an electrically conductive rotor outer part (17) is mounted between a freely rotatable permanent magnetic rotor inner part (16) and the stator poles (11,12) in the form of a hollow cylinder or a short circuit cage. The rotor outer part (17) rotates in form of a cage runner asynchronous and drives the connected load, after the start of the permanent magnetic inner part (16) which runs synchronous in the continuous operation. A rotating direction arresting device (36,37) assures a defined rotating direction of a drive shaft (27).
摘要:
A turntable drive motor comprises a stator having a core defining an airgap for receiving a rotor, and a field winding for establishing an alternating magnetic flux of a given frequency therein. An elastic belt is disposed about a pully mounted on the rotor shaft and a flange secured to the turntable. A ring having a plurality of permanently magnetized poles of alternate polarity along its periphery is attached to the flange. A pair of elements are secured to the core for diverting a portion of the stator magnetic flux to a region adjacent to the ringed magnets. The relationship between the excitation frequency and the number of the permanently magnetized poles is such that deviations in the rate of rotation of the turntable for a desired rotational rate are opposed.