To prevent creation of unnecessary resin when fixing a magnet with resin, a manufacturing method for manufacturing a magnet embedded core comprises: a placing step of placing the rotor core on a mounting table such that an end surface of the rotor core is in contact with the mounting table; a resin charging step of charging the resin in solid state into the magnet insertion hole; a melting step of inciting the resin in the magnet insertion hole; a magnet inserting step of inserting the magnet into the magnet insertion hole; a closure step of closing the opening of the magnet insertion hole remote from the mounting table; and a resin pressurizing step of pressurizing the molten resin that has flowed into a buffer chamber formed in the mounting table from the opening of the magnet insertion hole on a side of the mounting table following the closure step.

In a method of manufacturing a magnet embedded core (1), creation of unnecessary resin from the resin for fixedly securing the magnet is prevented. The method includes a resin charging step of charging resin material (3) in solid form into the magnet insertion hole; a melting step of melting the resin material (33) in the magnet insertion hole, and a pressurization step of pressurizing an interior of the magnet insertion hole (3). The melting step includes melting the resin material (33) at least partly by preheating and inserting the magnet (4) into the magnet insertion hole (3).

The invention relates to a method for trickle impregnation of a stator (2) or armature of an electric machine with a synthetic resin (5) curing under temperature increase, comprising the following steps:

a) heating the stator (2) or the armature from an initial temperature (T1) to a trickle temperature range (T2-T3) of the synthetic resin (5), which is initially still liquid, in a first period of time (t0-t1),

b) keeping constant the temperature in the trickle temperature range (T2-T3) and introducing the synthetic resin (5), which is still liquid, into the stator (2) or the armature in a second period of time (t1-t2),

c) heating the stator (2) or the armature to a curing temperature range (T4-T5) in a third period of time (t2-t3),

d) keeping constant the temperature of the stator (2) or the armature in the curing temperature range (T4, T5) in a fourth period of time (t3-t4) and setting and curing the synthetic resin (5) to a duroplast, and

e) cooling down the stator (2) or the armature after the end of the fourth period of time (t3-t4),

wherein the stator (2) or the armature is disposed in an impregnation device (1) during the introduction of the liquid synthetic resin (5), and wherein the trickle temperature range (T2-T3) has lower temperatures than the curing temperature range (T4-T5). According to the invention, the heating of the stator (2) or the armature is performed inductively.

A segment for supporting electromagnetic coupling elements of a stator or rotor of an electrical machine comprises a plurality of elongate laminations which are stacked in a first direction to form a lamination stack with elongate edges of the laminations defining opposite first and second major faces of the lamination stack. The segment comprises a plurality of elongate compression devices passing internally through the lamination stack in the first direction and arranged to compress together the laminations in the lamination stack.

Various disclosed embodiments include oil systems, electric motors, and vehicles. In an illustrative embodiment an electrical motor system includes an oil reservoir, a motor, and an oil delivery system. The oil reservoir is configured to hold oil therein. The oil delivery system includes a heat exchanger. The oil delivery system is configured to operate in a low-temperature mode, bypassing the heat exchanger, while the oil temperature is below a first predetermined temperature; operate in a high-temperature mode, directing oil traversing the oil delivery system through the heat exchanger while the oil temperature is above a second predetermined temperature; and operate in an intermediate-temperature mode, partially bypassing the heat exchanger while the oil temperature is between the first predetermined temperature and the second predetermined temperature.

The present disclosure relates to systems and/or methods for monitoring one or more motor space heaters. For example, various embodiments described herein can relate to a method for monitoring one or more motor space heaters that includes detecting that an electric motor is inactive based on operation data generated by a sensor circuit coupled to the electric motor. Additionally, the method can include determining, in response to the detecting, whether a motor space heater in proximity to the electric motor is active based on the operation data. Also, the sensory circuit can be further coupled to the motor space heater.

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.

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.

A method for sanitizing an electric motor is provided. The method includes setting operational parameters for the electric motor for destroying targeted microbes; and energizing the electric motor using the set operational parameters. Computer program products and an electric motor are disclosed.

The present disclosure relates to insulation systems. The teachings thereof may be embodied in an insulation system for an electrical machine. For example, an insulation system may comprise: solid insulation materials; an impregnating resin having oxirane functionalities; a depot accelerator distributed throughout the solid insulation materials; and a catalyst for initiating hardening of the impregnating resin, wherein the catalyst is at least partly in gaseous form under hardening conditions.