A submersed electric motor includes a stator assembly arranged within an annular insulation chamber, and a stator with stator windings and a capacitive electric starter which is connected electrically thereto.
The insulation chamber is formed between an outer tubular jacket, an inner tubular jacket, which is coaxial to the outer tubular jacket, with two annular end covers adapted to close the annular interspace between the outer jacket and the inner jacket.
The submersed electric motor further includes a rotor arranged inside the inner tubular jacket.
The capacitive electric starter includes at least two capacitors, which are mutually complementary, and have a transverse cross-section with an arc-like profile and are connected in parallel to each other.

An electric motor includes a main winding coupled to a first line terminal, and first and second boost windings coupled in series to the main winding. A high-speed lead wire is coupled to a first tap between the main winding and the first boost winding, a medium-speed lead wire is coupled to a second tap between the first boost winding and the second boost winding, and a low-speed lead wire is coupled to a third tap after the second boost winding. A start winding has a first end coupled to the first line terminal and a second end. A capacitor has a first end series-coupled to the second end of the start winding and a second end coupled to the second tap. A switch coupled to a second line terminal is configured to couple the second line terminal to one of the high, medium, and low-speed lead wires.

An electric motor includes a main winding coupled to a first line terminal, and first and second boost windings coupled in series to the main winding. A high-speed lead wire is coupled to a first tap between the main winding and the first boost winding, a medium-speed lead wire is coupled to a second tap between the first boost winding and the second boost winding, and a low-speed lead wire is coupled to a third tap after the second boost winding. A start winding has a first end coupled to the first line terminal and a second end. A capacitor has a first end series-coupled to the second end of the start winding and a second end coupled to the second tap. A switch coupled to a second line terminal is configured to couple the second line terminal to one of the high, medium, and low-speed lead wires.

Provided is a wire connecting structure of coils of a three-phase motor, a wire connecting method and three-phase motor, which is capable of reducing a size of a short circuit terminal for a neutral point. The wire connecting structure is a wire connecting structure of coils which are wound to each salient-pole in a three-phase motor having respective salient-pole of a U phase, a V phase and a W phase, the coils of the salient-poles belonging to any two phases among the U phase, the V phase and the W phase are formed by a single continuous first conducting wire, and the coil of the salient-pole belonging to the rest one phase is formed by a single continuous second conducting wire.

An improved built-in capacitor motor structure includes a housing, a stator portion, an insulating member and a rotor portion. The housing includes a front cover and a rear cover for receiving the stator portion. The stator portion includes a core frame provided with an annular insulating frame body to which the insulating member connects. A plurality of circularly arranged docking units extend from the periphery of one side of the insulating frame body. A plurality of corresponding docking units are provided at the bottom side edge of the insulating member. These corresponding docking units are engaged with the docking units of the insulating frame body, respectively. The rotor portion is received in the stator portion. A capacitor is combined inside an accommodating space of the insulating member in communication with the outside, such that the capacitor is assembled inside the motor. In this way, assembly is easy while electromagnetic field of the motor is less easily affected.

A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start winding, a capacitor electrically coupled in series with the start winding, a first plurality of windings, and a second plurality of windings. The motor includes first and second sets of electrical leads connected respectively to the first plurality of windings and to the second plurality of windings, the first plurality of windings and the second plurality of windings respectively configurated to rotate the motor respectively at a first and second rotational speeds of the motor when mounted respectively to the first machine and to the second machine.

A permanent split capacitor (PSC) motor includes a stator defining an axis of rotation and a rotor disposed adjacent the stator. The stator includes a start winding, a capacitor electrically coupled in series with the start winding, a first plurality of windings, and a second plurality of windings. The motor includes first and second sets of electrical leads connected respectively to the first plurality of windings and to the second plurality of windings, the first plurality of windings and the second plurality of windings respectively configurated to rotate the motor respectively at a first and second rotational speeds of the motor when mounted respectively to the first machine and to the second machine.

A segmental stator, an electric motor have same and a household appliance are provided. The segmental stator includes: a plurality of main windings, a plurality of secondary windings, a plurality of winding needles and a wiring board. Each of the main winding and the secondary winding includes a core segment and a winding frame, and the winding frames of the main winding and secondary winding are wound with a main winding wire and a secondary winding wire respectively. The main windings include at least one first main winding separately wound with one main winding wire and at least two second main windings continuously wound with one main winding wire. The plurality of secondary windings include at least one or more of the following: at least one first secondary winding separately wound with one secondary winding wire and at least two second secondary windings continuously wound with one secondary winding wire.

The present disclosure relates to mechanical braking mechanisms used in electric motor applications. The present braking mechanisms may be configured as non-back-drivable mechanical brakes and provide immediate braking of the motors. According to one embodiment, a mechanical brake assembly for an electric motor may include a female disk having a curved groove and an abutment. The mechanical brake assembly further includes a male disk having a projection, the male disk being attached to a rotor of the electric motor. When the electric motor is energized, the projection of the male disk is allowed to rotate uninterrupted with the rotation of the rotor. However, when the electric motor is de-energized, the projection of the male disk travels within the curved groove of the female disk and abuts the abutment of the female disk, thereby stopping the rotation of the rotor of the electric motor.

The present disclosure relates to mechanical braking mechanisms used in electric motor applications. The present braking mechanisms may be configured as non-back-drivable mechanical brakes and provide immediate braking of the motors. According to one embodiment, a mechanical brake assembly for an electric motor may include a female disk having a curved groove and an abutment. The mechanical brake assembly further includes a male disk having a projection, the male disk being attached to a rotor of the electric motor. When the electric motor is energized, the projection of the male disk is allowed to rotate uninterrupted with the rotation of the rotor. However, when the electric motor is de-energized, the projection of the male disk travels within the curved groove of the female disk and abuts the abutment of the female disk, thereby stopping the rotation of the rotor of the electric motor.