A hard start capacitor replacement unit includes a capacitor container having a cover, a plurality of capacitors received within the container, each of said capacitors having a capacitance value, a common terminal mounted on the cover and electrically connected to a common terminal of each of said plurality of capacitors, a plurality of cover terminals mounted on the cover spaced apart from the common terminal and from each other, each cover terminal respectively electrically connected to one of the plurality of capacitors, a relay having contacts and being capable of opening and closing said contacts in response to a monitored condition of the motor, the relay having relay terminals, a fuse electrically connected to one of the relay terminals by a first wire wherein the fuse electrically disconnects the hard start capacitor replacement unit and the motor upon a failure, and a second wire electrically connecting one of the relay terminals and the motor, a third wire electrically connecting the common terminal and one of the relay terminals, a fourth wire electrically connecting one or more cover terminals to one of the relay terminals, wherein the contacts of the relay close to electrically connect one or more capacitors of the plurality of capacitors to the motor, and the contacts of the relay open to electrically disconnect the one or more capacitors of the plurality of capacitors from the motor.

A miniature handheld electric traction device including a shell, a power supply part, a power motor, a reduction gear set, a braking part and a winding drum, wherein the power motor, the reduction gear set and the winding drum are arranged in the shell; the power motor is linked with the winding drum through the reduction gear set; a surface of the winding drum is wound with a traction rope; the reduction gear set includes a planetary gear; the sun gear of the planetary gear is coaxial with the winding drum; the power motor or the motor shaft of the power motor is inserted into the inner ring of the winding drum; the motor shaft is linked with the planetary gear.

Power plant having generator with stator and rotor rotating in opposite directions and comprising rotor generator linear gear and stator generator linear gear positioned in opposite directions to one another relatively to generator axis consisting of rotor shaft and stator shaft, rotor generator impeller and stator generator impeller in contact with rotor generator linear gear and stator generator linear gear, and have rotational motion in opposite directions, at least one carrying motor allowing lifting the mechanism up by motor linear gear, sensor groups detecting location of the mechanism, battery and/or power supply and/or electricity grid providing electrical energy for the system, brush-slip ring system and mechanism phase output for drawing out electricity generated in said generator, a control unit controlling accelerating, decelerating and stopping actions of said mechanism of which location is detected by mechanism phase output and sensor groups and carrying motor and motor drive circuit preforming said actions.

A power system, a power system control method, an unmanned aerial vehicle (UAV) and a UAV control method are disclosed. The power system includes an engine, a motor, and a battery. The engine includes an engine body and an engine output shaft. The motor includes a stator, a rotor, and a stator connector for connecting the stator and the rotor. The stator connector is arranged on the engine body, and the rotor is coaxially arranged on the engine output shaft. The rotor is used for coaxial connection with the external power receiver. The battery is connected to the motor, and the battery can be discharged to provide electric energy to the motor, or receive the electric energy output by the motor for charging.

A voltage divider circuit is configured by a resistor having one end connected to a positive electrode of a battery configuring a power source and another end connected to a first terminal that is a motor terminal on one side of a wiper motor, and a FET having one end connected to the first terminal and another end grounded. The voltage divider circuit lowers a voltage of the battery to a test voltage that does not cause the wiper motor to rotate. A microcomputer detects a detected voltage that is a voltage output from the voltage divider circuit to a second terminal that is a motor terminal on the other side of the wiper motor via the first terminal of the wiper motor and the wiper motor, and computes a motor terminal voltage, this being a potential difference between the first terminal and the second terminal, from the detected voltage.

A system for wirelessly supplying electric energy to a rotating device includes a flange disk, a disk-shaped ring, an annular plastic filling, a receiving coil which is embedded in the annular plastic filling, a U-shaped ferrite core having a short section, the end face of which is directed to the plastic filling, a long section which is oriented parallel to the short section and which extends parallel along the outer surface of the annular plastic filling, with the sections connected to one another via a section, a coil system and a receiving coil made of revolving wire windings. A distance of the end face of the long section from the rotation axis of the flange disk is smaller than a distance of the receiving coil from the rotation axis of the flange disk.

A thin cooling fan includes a fan shell, a motor, a plurality of blades, and a PCB. The fan shell comprises a base plate and a shell cover which cover to each other to form an inner space. The base plate has a first surface facing toward the inner space and a second surface having a receiving space and opposite to the first surface. The motor is combined in the inner space. The blades are disposed in the inner space and rotated by the motor. The PCB is disposed in the receiving space and flush with the second surface. Thus, the whole thickness of the cooling fan is reduced and the flow channel design in the inner space is not affected.

Heat radiation base body 23 that is adjacent to electric motor unit EM and extends in direction of rotation shaft 50 of electric motor is provided close to rotation shaft 50 of electric motor. Board 24 of one electronic control unit of redundant system is fixed to heat radiation base body along direction in which heat radiation base body 23 extends with thermal conduction to heat radiation base body 23 allowed. Board 26 of the other electronic control unit of redundant system is fixed to heat radiation base body so as to face to board 24 of one electronic control unit of redundant system, with thermal conduction to heat radiation base body 23 allowed. Size reduction of electric drive device in radial direction can be achieved. Since heat radiates to housing of electric motor unit through heat radiation base body, heat from board can radiate efficiently to the outside.

A system and method for integrated charging a vehicle includes a hybrid excitation machine, operable as a traction motor and including a rotor separated by an air gap from a stator with AC windings. An AC utility line power supply is connected to the AC windings providing an electrical current to the vehicle and inducing a magnetic flux across the air gap and in the rotor. A short circuit, an open circuit, or a DC voltage may be applied to a DC winding in the stator to reduce the magnetic flux into the rotor. A field coil in the rotor may be excited with a DC voltage using a secondary coil on the rotor in a traction mode. The secondary coil is excited by the stator windings using field-oriented control in a “self-excited machine” embodiment, and is directly excited by a separate primary coil in an “externally-excited machine” embodiment.

A scarecrow includes a scarecrow body corresponding generally in shape to a body of a live animal and an assembled hollow scarecrow head of molded plastic construction corresponding in shape to a head of the live animal. The assembled head includes a front face portion and a separate rear head portion fixed together to form the head, the front face portion having a front receiver and the rear head portion having a rear receiver. The scarecrow includes a motor having a rotatable motor shaft; a mounting insert fixed to the motor with the motor shaft extending below the mounting insert, the mounting insert received by the front receiver and the rear receiver to fix the mounting insert to the head; and a mounting bracket fixed to the scarecrow body and having a motor shaft receiver into which the rotatable motor shaft is received. Rotation of the motor shaft rotates the assembled scarecrow head relative to the scarecrow body.