摘要:
An electric motor has a stator defining multiple stator poles with associated electrical windings, and a rotor having multiple rotor poles. The rotor has flux barriers between adjacent rotor poles, the flux barriers each having a material with an electrical conductivity higher than the rotor pole material. The flux barriers are electrically isolated from one another external to the ferromagnetic material. Eddy currents are induced in the flux barrier to cause destructive interference of an impending magnetic field, such that the flux barrier effectively acts to inhibit magnetic flux during motor operation, which in some cases will result in a repulsive force that will act to increase an induced motive force on the rotor poles.
摘要:
A ring varistor-based method for reducing electromagnetic interference of a motor, a corresponding motor commutator, and the motor. The method comprises: forming a counter bore in an end portion of a motor commutator; and placing a ring varistor into the counter bore
摘要:
The purpose of the present invention is to provide an electric power supply system that is superior to conventional systems.This electric power supply system has a configuration in which: a fixed member 8 is provided with an inner conductor 9 arranged along the axial direction of the fixed member 8, an outer conductor 13 arranged along the axial direction of the fixed member 8 so as to cover the inner conductor 9, and a high-frequency conductive path dielectric 5 disposed between the inner conductor 9 and the outer conductor 13; a rotating member 7 is provided with an inner conductor 9 arranged along the axial direction of the rotating member 7, an outer conductor 13 arranged along the axial direction of the rotating member 7 so as to cover the inner conductor 9, and a high-frequency conductive path dielectric 5 disposed between the inner conductor 9 and the outer conductor 13; a high-frequency electric power source 27, the outer conductor 13 of the fixed member 8, the outer conductor 13 of the rotating member 7 and a load 26 are electrically connected so that it is possible to supply electric power from the high-frequency electric power source 27 to the load 26; and the fixed member 8 and the rotating member 7 are combined to form an electromagnetic wave attenuation structure for attenuating the electromagnetic waves emitted from the electric power supply system.
摘要:
A connector assembly body has: on an end surface on an opposite side to an output side of a motor; a large-current connector of a power supply system, with large-current connector being disposed in the same direction as the motor output shaft; a small-current connector of a signal system, with the small-current connector being disposed in the same direction as the motor output shaft; and a component mounting section including at least one of a capacitor and a coil, and the large-current connector, the small-current connector and the component mounting section are disposed separately in respective regions.
摘要:
Rotary capacitor assemblies divert or mitigate high-frequency electrical currents and voltages in bearings of electric machinery (e.g., motors and generators) without direct contact with the bearings. The assemblies include rotating capacitors, in which surfaces in close proximity are free to rotate with respect to another while maintaining relative surface area and separation distance. A lubricant (such as air or oil) facilitates capacitive surfaces hydrodynamically “floating” on each other. A shunt body is connected electrically in parallel with the bearings of the machine, providing a non-contact or nearly non-contact electrical pathway for damaging high-frequency currents an voltages to be shunted around the mechanical load carrying bearings.
摘要:
An electric drive system for a household appliance includes an electric motor, and a passive power factor correction coil, wherein the passive power factor correction coil is mechanically coupled to an end shield of the electric motor or the passive power factor correction coil is arranged inside a housing of the electric motor.
摘要:
A motor may include a housing, a motor assembly accommodated in the housing, and a mold cover having an outer circumferential surface. The outer circumferential surface may be coupled to the housing, which has electrical conducitivity. A noise filter is provided in the mold cover. A ground terminal of the noise filter is electrically connected to the outer circumferential surface of the mold cover.
摘要:
An electric machine has a base body in which a stator of the electric machine is arranged. The electric machine has a rotor shaft which is mounted in the base body in bearings for rotation. The electric machine has a pick-up element connected in fixed rotative engagement with the base body and which taps a voltage present on the rotor shaft. The pick-up element is electrically connected to the base body via a capacitor and/or an ohmic resistor. A capacitance value of the capacitor is at least 1 nF. A resistance value of the ohmic resistor is between 10 mO and 10 O.
摘要:
An assembly includes a resistor pack, a first spring clip, and a first rigid connector. The resistor pack has a first clip-shaped cavity therein. The first spring clip is disposed within the first clip-shaped cavity and the first connector is abutted by opposing portions of the first spring clip.
摘要:
An apparatus includes multiple brushes (30, 30B, 30A, 30a, 30b) and a commutator (10) that has multiple commutator plates (12, 12A, 12B, 13B) to contact the multiple brushes for commutation in order to convert electrical energy into mechanical energy or vice versa. A brush may include an EMI suppression mechanism (30, 38A, 38B) to reduce random electromagnetic interferences or a filter circuitry (400B) to reduce the overall level of electromagnetic interferences. An EMI suppression mechanism may include a specially designed brush that leverages dielectric properties or mechanical properties of the brush to reduce electromagnetic interferences. An EMI suppression filter circuitry may include an all-capacitor filter circuitry that does not include beads or chokes.