A motor provided with: a resin sealing member that is made from a resin and that covers a stator; and a cover member that is fixed to the resin sealing member. The protrusions protruding radially outward are formed on the resin sealing member. A part of the cover member on a Z2 direction side thereof is configured as a cylindrical cover section covering the resin sealing member from the outer circumferential side. The cover section has formed therein notch sections, engagement grooves that extend toward one side in the circumferential direction from the ends of the notch sections on a Z1 direction side and with which the protrusions engage, and a stopper restricting movement of the cover member toward the other side in the circumferential direction. The widths of the notch sections are wider than the widths of the protrusions in the circumferential direction.

To prevent the creation of unnecessary resin from the resin used for fixing the magnet, a device for manufacturing a magnet embedded core including a magnet embedded in resin filling a magnet insertion hole (104) extending axially in a motor core comprises a resin charging device (80) configured to charge the resin (114) in solid form into the magnet insertion hole (104), a magnet insertion device (90) configured to insert the magnet (110) into the magnet insertion hole (104), and a heating device (70) configured to heat the motor core (101) to melt the resin (114) in solid form received in the magnet insertion hole (104).

A method of hot drop fastening components and a product thereby made is described. Machine components are provided. A first machine component defines a passageway and carries a coating. The first machine component is caused to expand by delivering a predetermined amount of energy to the first machine component, wherein the predetermined amount of energy is based on a property of the coating. A second machine component is inserted into the passageway of the expanded first machine component. Thereafter, the first machine component is permitted to cool with the first machine component inserted in the passageway thereby fastening the first machine component with the second machine component by the first machine component contracting as it cools. Properties such as adhesion and/or rust prevention properties of a primer coating in a motor manufactured using a hot drop process are preserved during the hot drop process in the manufactured product.

A rotary electric machine system includes a rotary electric machine unit, a temperature adjustment unit, and a control unit. The rotary electric machine unit includes a rotary electric machine and a temperature detection unit. The rotary electric machine includes a stator core around which a coil is wound, and a rotor having a magnet. The temperature adjustment unit increases the temperature of the stator core. When a rotational speed of the rotary electric machine is in a predetermined high-speed rotation state, in a case in which the temperature detected by the temperature detection unit is less than a predetermined value, the control unit controls the temperature control unit to increase the temperature of the rotary electric machine.

A wind power generator set, an electromagnetic device and a heat exchange or drying device for an iron core. The heat exchange or drying device for an iron core includes a sprayer capable of feeding an airflow, wherein the sprayer is provided with a spraying hole, and the airflow can be sprayed to an end of the iron core through the spraying hole. The sprayer sprays a cold airflow or a hot airflow at the end of the iron core, creating a cooling and drying environment at the end of the iron core. This facilitates the heat dissipation of the iron core and also the maintenance of the insulation performance of an end of a winding, including the insulation of the winding itself and the insulation between the winding and the iron core, and also the protection of a magnetic pole and a protective covering layer thereof.

The disclosure relates to a redundant electric machine for driving a propulsion means with increased operational safety. The machine may include two systems, with each system including a stator winding system and a rotor assigned thereto with permanent magnets, wherein the rotors are fastened on a common shaft for driving the propulsion means. If a fault occurs in one of the stator winding systems, the rotor, which continues to rotate, has to be prevented from inducing electric voltages in the stator winding system because this may lead to a fire in the machine. A demagnetization apparatus is therefore provided which, in a targeted manner, demagnetizes the permanent magnets of the rotor assigned to the faulty stator winding system such that the inducing of electric voltages is prevented.

A method for producing an electric drive machine, including the steps of providing a stator having a cavity for the introduction of a rotor and introducing a hardenable seal into the cavity in contact with the stator and then hardening the seal.

Various embodiments include a passive component comprising: a substrate; and two conductor tracks disposed on the substrate. The substrate forms an electrically insulating bridge between at least two phases of an electrically rotating machine. Each of the two conductor tracks is coupled to a separate phase of the at least two phases so an electrical potential across the electrically insulating bridge is the same as in the insulation system of the machine and the potential load on the passive component corresponds to the potential load on the insulation system.

Systems and methods that utilize continuous field flash as integrated alternator heaters in a genset are disclosed herein. The method includes detecting that a generator set is in a non-rotating state, enabling a field flash circuit of the generator set to operate while the generator set is in the non-rotating state, and activating the field flash circuit so that current flows through and heats at least a portion of an alternator of the generator set and reduces a moisture on the at least a portion of the generator set.

A rotating electrical machine with one or more heating elements is provided in that the one or more heating elements mount circumferentially on an inside of a frame or enclosure of the rotating electrical machine. The rotating electrical machine comprises an enclosure with multiple cooling fins, insulated stator windings positioned inside the enclosure, and a heating element positioned inside the enclosure. The heating element provides suitable heating of the insulated stator windings through heated air to prevent condensation while being physically decoupled from an insulation of the insulated stator windings.