Abstract: A flexible clean energy power generation device with high power efficiency, which is a multi-film structure, includes an internal conductive support layer and an ion transport layer. The internal conductive support layer is formed by coating a conductive material onto a hydrophilic substrate; the ion transport layer is formed by coating a polyelectrolyte onto an outer side of the internal conductive support layer. After a solution is dropped on the device, the solution produces a capillary pressure difference by capillary action and evaporation phenomena to drive water molecules and counterions of the solution to move from a wet side to a dry side, thus producing a potential difference. Without an external pressure, the device uses a layered two-dimensional conductive material together with a polyelectrolyte, realizing a self-electrokinetic power generation with high energy output and long-life by capillary action and evaporation phenomena with using pure aqueous solution or other electrolyte solutions.

Abstract: An end coil cooling structure includes: a shielding member which is disposed within a motor housing, surrounds an area where an end coil is disposed, and forms an enclosed space; and a plurality of heat conducting particles disposed to fill the enclosed space and to come into contact with the end coil.

Abstract: An apparatus includes a housing configured to receive at least a portion of an electric motor. The apparatus also includes a manifold disposed on an upper surface of the housing. The manifold includes a number of vertical jets configured to target one or more portions of the electric motor, the vertical jets includes multiple vias extending between (i) a cavity within the manifold and (ii) an interior portion of the housing. The cavity within the manifold is defined by (i) at least a portion of the upper surface of the housing, (ii) one or more side walls extending from the upper surface of the housing, and (iii) a cover lid coupled to the one or more side walls and configured to cover the cavity and the vias.

Abstract: To solve the problem of large electromagnetic noise in AC traction motor, embodiments have open square notches at symmetrical positions on both sides of stator teeth of AC traction motor to effectively reduce electromagnetic noise without affecting other performance indicators of motor. In addition, embodiments fit the functional relationship between the optimal notch size or optimal slotting position size of motors and their power by determining the optimal notch size or optimal slotting position size of motors with different power grades, so as to achieve the noise reduction effect.

Abstract: A dual pole high temperature superconductive parallel path switched reluctance motor combining high temperature superconductive wire in stator coils, a switched reluctance motor type, parallel path motor technology, and a configuration and geometry of electromagnetic coils and permanent magnets in a dual pole stator in a magnetically coupled relation to a dual annular salient rotor to create complete and continuous square, short flux path.

Abstract: An internal stator of a rotary field machine has a number of N stator teeth. Two stator teeth each form a number of N/2 tooth groups, wherein one tooth group each is formed by two directly adjacently arranged stator teeth has a pole core and a pole shoe formed thereon, and thus, the inner stator comprises semi-closed grooves. The pole cores are made of a first material, for example, silicon iron. In addition thereto, an intermediate element extending in the axial direction of the stator is arranged between each of two stator teeth of two adjacent tooth groups, which is made of a different material. The second material of the intermediate element is different from the first material of the stator teeth.

Abstract: A flywheel system includes a fixture providing a base and a stator, rotor having a cavity to receive the stator, a generator/motor module having a plurality of permanent magnets mechanically coupled to the rotor and an active magnetic bearing module. The active magnetic bearing module includes a plurality of magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to a shaft and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. The windings of the generator/motor module are arranged around the rotation axis of the rotor at a first distance from the rotation axis of the rotor, the electromagnets of the active magnetic bearing module are arranged around the rotation axis of the rotor at a second distance, and the first distance is greater than or equal to the second distance.

Abstract: A motor controller comprises a switch circuit, a driving circuit, a pulse width modulation circuit, and a Hall sensor. The switch circuit is coupled to a three-phase motor for driving the three-phase motor. The driving circuit generates a plurality of control signals to control the switch circuit. The pulse width modulation circuit generates a pulse width modulation signal to the driving circuit. The pulse width modulation signal has a duty cycle. The Hall sensor is coupled to the pulse width modulation circuit for generating a Hall signal. When the duty cycle is less than an alignment duty cycle, the motor controller generates an alignment waveform based on the initial value of the Hall signal. The alignment waveform may be a part of an M-shaped waveform.

Abstract: The invention relates to a rotary induction heater with direct-current excitation for heating solid or liquid or gaseous substances. The alternating magnetic field required for induction or for generating inductive heat is generated with a direct-current coil having a constant magnetic field. The constant magnetic field is converted into an alternating magnetic field by way of a rotating mechanical component.

Abstract: The present invention relates to an electromagnetic machine comprising: rotation shaft; a stator comprising a multi-phase winding wire; a mover (rotor 1) comprising the multi-phase winding wire and spaced apart from the stator at a preset interval; and a controller for independently controlling a first magnetic field of the stator and a second magnetic field of the mover (rotor 1). The electromagnetic machine according to the present invention can resolve, by means of the mover (rotor 1) and the wound-type stator that can be independently and actively controlled, a torque issue at start-up or when needed and, thereby, has the effects of producing a maximum driving torque while having a minimum size, and of maximizing efficiency.

Abstract: An electric motor including a tension member is proposed. The electric motor includes the tension member installed therein and composed of step parts stacked in multiple steps, so that structural strength and structural robustness are improved.

Abstract: An electric machine including a shaft, a rotor back assembly surrounding a portion of the shaft, and two or more permanent magnets radially positioned around the perimeter of the rotor back assembly. The electric machine also includes a rotor fan with multiple fan blades formed in an exterior surface of the rotor back assembly and one or more ventilation channels extending through the rotor back assembly. Methods of exporting heat from an electric machine, wither from a machine housing or through the shaft is also disclosed. The heat exportation methods feature the circulation of a fluid with the rotor fan through the ventilation channels and into contact with the housing, or exporting heat from the rotor back assembly through the shaft.

Abstract: A slinger for an electric motor broadly includes a hub and a wheel. The motor includes a housing in which a stator and rotor are at least partly housed. The motor also includes a rotatable output shaft projecting upwardly through a shaft opening in the housing. The hub is fixedly attachable to the output shaft of the motor so that the slinger rotates with the output shaft. The wheel is configured to divert liquid radially away from the shaft opening. The wheel includes a wheel plate and a plurality of radially extending blades cooperatively forming a series of passages extending radially outward relative to the shaft opening, when the hub is attached to the output shaft. The wheel plate is supported by the hub so as to be positioned above the housing when the hub is attached to the output shaft. The blades present radially inboard ends intersecting the hub.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: An electric motor and a method for manufacturing an electric motor capable of improving rotation balance of an armature and realizing effective brake braking with a simple configuration are provided. In an electric motor including an armature core having a plurality of teeth and teeth within a yoke, a winding wound between the slots, and a commutator having and a plurality of segments to which the winding is connected, the winding has a main winding that applies a rotational force to the armature core and a brake winding that applies a braking force to the armature core, and an H bridge circuit is built between the winding and a power supply, and the main winding and the brake winding of the winding are disposed at positions for adjusting balance when the armature core rotates.

Abstract: The present disclosure describes a mover of a linear motor system. The mover includes a housing and a material coupled to the housing, the material having one or more protrusions extending towards a track of the linear motor system. The mover also includes a bearing to interface with the track. The bearing includes one or more recesses extending from a first surface of the bearing toward a second surface of the bearing, opposite the first surface. Each of the one or more recesses receives a respective protrusion of the one or more protrusions of the material. The bearing wears away from the second surface over time as the mover travels along the track, exposing the one or more protrusions to the track.

Abstract: The present disclosure relates to an electronic clutch-coupled motor assembly and a driving device for a washing machine having the same. The electronic clutch-coupled motor assembly includes a motor including a stator defining a space having a predetermined size at an inner center thereof and a rotor spaced a predetermined distance from an outer circumference of the stator, disposed to surround the stator and configured to rotate, and an electronic clutch including an electronic clutch insert core having a circular shape and an electronic clutch bobbin fixed and coupled to an inside of the electronic clutch insert core, and press-fitted and coupled to the stator through the space and integrated with the stator.

Abstract: A resonance device includes a resonator, an upper lid, and a lower lid. The resonator includes a vibration portion, a frame, and holding arms. The vibration portion includes a base and a plurality of vibration arms. The lower lid has a protruding portion protruding between two adjacent vibration arms, the protruding portion has an insulating film, the vibration arms have a weight portion that has a conductive film formed on the insulating film, and in a direction in which the plurality of vibration arms extend, a first distance between the weight portion of any one of the two adjacent vibration arms and the holding portion is less than a second distance between the weight portion and the protruding portion.

Abstract: Apparatus, systems, and methods used to produce linear and rotational motion, acceleration, and actuation by the use of mobile ferromagnetic or permanent magnets subjected to asymmetric electromagnetic field distributions are disclosed herein. A variety of exemplary embodiments and applications are described, involving different coil and actuator geometries to include and allow for both stationary and moving magnets, electric fields, and magnetic fields.

Abstract: A damper arrangement for a motor vehicle drive train includes a damper (120) for damping torsional vibrations and a rotationally fixed fluid guide element (110). The fluid guide element (110) is axially adjacent to the damper (120). The damper (120) has at least one duct (112-1, 112-2, 112-3). A fluid (140) that at least partially surrounds the damper (120) is conveyed through the at least one duct (112-1, 112-2, 112-3) when the damper (120) rotates.