Abstract: Disclosed herein is a rotor for an interior permanent magnet synchronous motor, the rotor including: a rotor core having a through-hole formed in an axial direction so that a shaft is press-fitted thereinto, a permanent magnet receiving part formed at an outer peripheral portion thereof in a circumferential direction so that a permanent magnet is inserted thereinto, and slits formed to be adjacent to the permanent magnet receiving part and be extended toward a circumferential end in a radial direction; and at least one permanent magnet inserted into the permanent magnet receiving part.

Abstract: Disclosed herein is an assembling structure for a resolver capable of improving precision in sensing a position of a rotor of a motor by stably coupling and fixing a resolver stator part. More specifically, a fixing ring is coupled to the resolver stator part, a first coupling part of a motor housing, and a second coupling part of a cover member so as to simultaneously contact three surfaces of the resolver stator part, the first coupling part, and the second coupling part to form a stable coupling structure among the resolver stator part, the first coupling part, and the second coupling part, thereby making it possible to secure precision of a coupling position of the resolver stator part.

Abstract: Disclosed herein are a motor driving apparatus and method. The motor driving apparatus includes: an inverter including a main driver sequentially activating N phases and a spare driver activating a spare phase substituting for a faulted phase among the activated N phases; a detecting unit detecting the respective output signals of the N phases; a switching unit performing switching so that the spare phase is connected to the faulted phase of the exited N phases; and a controlling unit driving the inverter to determine whether or not a fault is generated and control the switching unit so that the faulted phase is connected to the spare phase. Therefore, since the motor may be driven without replacing the inverter, a cost may be reduced, and since the motor may be driven without a change in the number of phases, the motor may be efficiently and stably driven.

Abstract: According to a preferred embodiment of the present invention, in a structure in which a permanent magnet is embedded radially outwardly from a rotor portion, a pair of permanent magnets is embedded in a V-letter shape and a slit in a longitudinal direction is radially formed between the pair of permanent magnets. According to the preferred embodiment of the present invention, it is possible to implement relatively higher torque performance while minimizing the number of permanent magnets embedded in an interior permanent synchronous machine (IPMSM).

Abstract: Disclosed herein is a laminated core used for a motor such as an electric motor, including: a unit laminate laminated in at least one layer and formed of a soft magnetic composite, wherein each powder particle forming the soft magnetic composite is insulation-coated. The preferred embodiments of the present invention can improve the mechanical strength of the core of the soft magnetic composite by manufacturing the core using the laminating method of the soft magnetic composite and reduce core loss by performing insulation coating on powder particles forming the soft magnetic composite.

Abstract: Disclosed herein are an apparatus and a method for diagnosing a fault of a multi-sensor of a motor. The apparatus includes: a plurality of tachometers attached to the motor to measure rotation speeds; and a plurality of processors each connected directly to the plurality of tachometers to receive the measured rotation speeds, thereby securing a plurality of directly obtained rotation speeds, sharing the obtained rotation speeds with each other, thereby obtaining a plurality of indirectly obtained rotation speeds, and performing a fault diagnosis on the plurality of tachometers using the plurality of directly obtained rotation speeds and the plurality of indirectly obtained rotation speeds.

Abstract: Disclosed herein are an apparatus and a method of driving a switched reluctance motor. The apparatus includes: a power supply unit; N pairs of coils; N common switch devices each connected in series with an upper portion of each of the N pairs of coils; N pairs of lower switch devices each connected in series with a lower portion of each of the N pairs of coils; first freewheel diodes; second freewheel diodes; and a switch driving unit providing a control signal to the N common switch devices and the N pairs of lower switch devices to sequentially supply current to the N pairs of coils.

Abstract: Disclosed herein is an apparatus of driving wheels for an in-wheel system, including: a driving shaft which is the center of rotatable driving; a fixation supporter rotatably supporting the driving shaft and coupled to the driving shaft; an in-wheel motor generating rotational power, which is coupled to the inside of a wheel in which a tire is mounted on one driving shaft in a shaft direction of the fixation supporter; and a balancing member formed on the other driving shaft in the shaft direction of the fixation supporter and formed at a position corresponding to the wheel coupled with the in-wheel motor. According to the present invention, an eccentricity phenomenon which is caused due to inclination of a wheel and a motor in one direction of a fixation supporter can be prevented in an apparatus of driving wheels for an in-wheel system.

Abstract: Disclosed herein are an apparatus and a method of driving a switched reluctance motor. The apparatus includes: a power supply unit; N pairs of coils; N pairs of upper switch devices each connected in series with an upper portion of each of the N pairs of coils; N pairs of lower switch devices each connected in series with a lower portion of each of the N pairs of coils; 2N first freewheel diodes; 2N second freewheel diodes; and a switch driving unit providing a control signal to the N pairs of upper switch devices and the N pairs of lower switch devices to sequentially supply current to the N pairs of coils.

Abstract: Disclosed herein is a laminated core used for a motor including an electric motor, wherein the core is formed of a soft magnetic composite and has a structure in which one or more unit laminates are laminated. Since the core is fabricated by laminating soft magnetic composites, the mechanical strength of the core formed of the soft magnetic composites can be improved.

Abstract: Disclosed herein is a switched reluctance motor having a double rotor structure. An out stator salient pole corresponding to an out rotor salient pole is formed to have an “E” shape by sequentially disposing a main salient pole, a first auxiliary salient pole, and a second auxiliary salient pole and an in stator salient pole corresponding to an in rotor salient pole is formed to have a pi (?) shape by sequentially disposing a first salient pole and a second salient pole, such that a magnetic flux path is reduced, thereby making it possible to prevent the loss of magnetic force.

Abstract: Disclosed herein is a transversal switched reluctance motor including: a rotor assembly formed by arranging a plurality of rotors including a rotor pole mounting part having a shaft coupled to an inner portion thereof and a plurality of rotor poles coupled to the rotor pole mounting part along an outer peripheral surface thereof in a direction of the shaft; and a stator assembly including a plurality of stators each including a coil enclosing an outer peripheral surface of the rotor assembly so that the rotor assembly is rotatably received in an inner portion thereof and a plurality of stator cores fitted with the coil from one side direction thereof along an outer peripheral surface thereof to thereby face the plurality of rotor poles, wherein the stator core has a C shaped cross section with respect to the direction of the shaft around which the rotor assembly rotates.

Abstract: Disclosed herein is a linear motor including: a first stator part including a plurality of stator cores having coils wound therearound multiple times and arranged to be spaced apart from each other by predetermined intervals in a longitudinal direction; a second stator part arranged to be spaced apart from the first stator part by a predetermined interval in a transversal direction so as to face the first stator part and including a plurality of stator cores having coils wound therearound multiple times and arranged to be spaced apart from each other by predetermined intervals in the longitudinal direction so that the second stator part is in parallel with the first stator part; and a mover arranged in an interval formed by the first and second stator parts and moving linearly.

Abstract: Disclosed herein is a transverse switched reluctance motor including: a rotor including a plurality of rotor disks each having a shaft fixedly coupled to an inner portion thereof, having a plurality of rotor poles fixedly coupled thereto along an outer peripheral surface thereof, and arranged in a direction of a shaft; and a stator assembly including a plurality of stators each facing the plurality of rotor poles, having coils wound therearound, and arranged in a circumferential direction of the plurality of rotor disks so that the plurality of rotor disks are rotatably received therein, wherein magnetic flux paths are formed so that magnetic fluxes move in the direction of the shaft by the plurality of stators and the plurality of rotor poles facing the plurality of stators to circulate the stators.

Abstract: Disclosed herein is a switched reluctance motor, including: a rotor provided with a plurality of salient poles protruded along an outer peripheral surface thereof; and a stator including a plurality of stator cores in a pi (?) shape that have the rotor rotatably accommodated therein, are opposite to the plurality of salient poles, and have coils wound therearound, wherein a magnetic flux path is formed along the stator cores in the pi shape and the salient pole opposite thereto.

Abstract: Disclosed herein is a switched reluctance motor comprising: an outer rotor provided with a plurality of salient poles protruded at equidistance along an inner peripheral surface thereof; and a stator provided in the outer rotor, including a plurality of stator cores including a pair of stator salient poles protruded toward the salient pole of the outer rotor and a stator yoke connecting and supporting stator salient poles to each other, and having phase windings in which coils are wound around the stator salient poles, wherein a magnetic flux generated by applying a current to the phase winding flows through the pair of stator salient poles and the salient pole of the outer rotor.

Abstract: Disclosed herein is a switched reluctance motor in which an outer rotor provided with a plurality of salient poles protruded at equidistance along an inner peripheral surface thereof; and a stator provided in the outer rotor, provided with a plurality of stator cores including main salient poles protruded toward the salient poles of the outer rotor and including coils wound therearound and auxiliary salient poles positioned at both sides of the main salient poles, and having phase windings in which the coils are wound around the main salient poles are provided, a magnetic flux is bisected in the main salient pole and flows into the auxiliary salient poles of adjacent phase windings, such that a short magnetic flux route is implemented, thereby making it possible to reduce core loss, and a magnet is also provided, thereby making it possible to improve torque characteristics.

Abstract: A showerhead for chemical vapor deposition (CVD) includes a head storing reaction gas flowing thereinto and feeding the stored reaction gas to a reaction chamber, and at least one support member passing through and coupled with the head and the reaction chamber so as to support the head.

Abstract: Provided is a chemical vapor deposition apparatus. The apparatus includes a reaction chamber, a gas introduction unit, and a gas exhaust unit. The reaction chamber includes a susceptor on which a wafer is loaded and a reaction furnace in which the wafer is processed by chemical vapor deposition. The gas introduction unit is disposed at an outer wall of the reaction chamber to supply reaction gas from an outside of the reaction furnace to a center portion of the reaction furnace. The gas exhaust unit is disposed at a center portion of the reaction chamber to discharge the reaction gas to an upper or lower outside of the reaction chamber after the reaction gas is used for a reaction in the reaction furnace. Therefore, the gas density inside the chamber can be kept at a substantially uniform state even when process pressure is increased for growing a high-temperature deposition layer.

Abstract: There is provided a chemical vapor deposition apparatus improved in structure such that a reaction gas introduced into a reactor where deposition is performed flows at a substantially uniform rate to ensure a thin film is grown substantially uniformly on the deposition object. The chemical vapor deposition apparatus includes: a chamber; a reactor provided in the chamber to have a deposition object deposited therein; and a reservoir storing a reaction gas fed from the outside to introduce the reaction gas to the reactor, the reservoir having a cross-sectional area changing according to a flow path of the introduced reaction gas.