An electricity generator using a six-segment rotating flux switch, a 2×2 switching sequence with four magnetic flux switch sites, and a unique magnetic circuit design, all of which together alternate the magnetic flux from a stationary permanent magnet through a stationary magnetic segment around which is wound a pickup coil thereby inducing electricity in the pickup coil. Both the vector direction and the scalar value of the magnetic flux are alternated within the stationary magnetic segment resulting in a high power output of AC electricity.

A method for operating a brushless electric motor of a motor vehicle, particularly an electromotive refrigerant compressor, with two sub-motors arranged in sections and each comprising n-phases, by means of a converter corresponding to the number of phases of the electric motor. On the basis of a performance requirement, first switching points are determined for the n-phases, of one of the sub-motors, and on the basis of the performance requirement, second switching points are determined for the n-phases of the other sub-motor. The second switching points are shifted by a first phase angle and the converter is controlled on the basis of the first switching points and the second switching points. The first phase angle is selected such that a resulting current flow over the converter is smaller than a first threshold value. A unit of a motor vehicle, comprising a brushless electric motor is also disclosed.

The invention relates to a stator (8) for an electromagnetic motor or generator comprising windings (4) and a magnetic circuit, the stator (8) comprising a yoke with a circular or polygonal shape and winding support teeth (3). Each winding (4) rests on a tooth (3) while at least partly surrounding a winding support (13, 14), each winding support (13, 14) comprising or being associated with snap snap-fitting means (15′) that cooperate with complementary snap-fitting means (3′) supported by a tooth (3) associated with the winding support (13, 14) so that the winding support (13, 14) is fastened to the associated tooth (3).

The invention relates to a stator (8) for an electromagnetic motor or generator comprising windings (4) and a magnetic circuit, the stator (8) comprising a yoke with a circular or polygonal shape and winding support teeth (3). Each winding (4) rests on a tooth (3) while at least partly surrounding a winding support (13, 14), each winding support (13, 14) comprising or being associated with snap snap-fitting means (15′) that cooperate with complementary snap-fitting means (3′) supported by a tooth (3) associated with the winding support (13, 14) so that the winding support (13, 14) is fastened to the associated tooth (3).

Disclosed is a single phase brushless direct current motor comprising a stator and a rotor which is rotatably located inside the stator, the stator comprising: a first stator core having a plurality of first core pieces which are formed to be bent from the inside; a second stator core having a plurality of second core pieces which are located between the first core pieces, respectively, and are formed to be bent from the inside; and a bobbin which is coupled between the first stator core and the second stator core, and around which a coil is wound, and the rotor comprising: a rotor body which rotates around a shaft; and a plurality of magnets which are formed on the outer circumferential surface of the rotor body, wherein the first core pieces and the second core pieces have overlapping regions which axially overlap when seen from the shaft.

Disclosed is a single phase brushless direct current motor comprising a stator and a rotor which is rotatably located inside the stator, the stator comprising: a first stator core having a plurality of first core pieces which are formed to be bent from the inside; a second stator core having a plurality of second core pieces which are located between the first core pieces, respectively, and are formed to be bent from the inside; and a bobbin which is coupled between the first stator core and the second stator core, and around which a coil is wound, and the rotor comprising: a rotor body which rotates around a shaft; and a plurality of magnets which are formed on the outer circumferential surface of the rotor body, wherein the first core pieces and the second core pieces have overlapping regions which axially overlap when seen from the shaft.

Disclosed is a single phase brushless direct current motor comprising a stator and a rotor which is rotatably located outside the stator, the stator comprising: a first stator core having a plurality of first core pieces which are formed to be bent from the outside; a second stator core having a plurality of second core pieces which are located between the first core pieces, respectively, and are formed to be bent from the outside; and a bobbin which is coupled between the first stator core and the second stator core, and around which a coil is wound, and the rotor comprising: a cup-shaped rotor body which rotates around a shaft; and a plurality of magnets which are formed on the inner circumferential surface of the rotor body, wherein the first core pieces and the second core pieces have overlapping regions which axially overlap when seen from the magnets.

Disclosed is a single phase brushless direct current motor comprising a stator and a rotor which is rotatably located outside the stator, the stator comprising: a first stator core having a plurality of first core pieces which are formed to be bent from the outside; a second stator core having a plurality of second core pieces which are located between the first core pieces, respectively, and are formed to be bent from the outside; and a bobbin which is coupled between the first stator core and the second stator core, and around which a coil is wound, and the rotor comprising: a cup-shaped rotor body which rotates around a shaft; and a plurality of magnets which are formed on the inner circumferential surface of the rotor body, wherein the first core pieces and the second core pieces have overlapping regions which axially overlap when seen from the magnets.

It is provided a multi-stator rotating electrical machine including: an inner stator; an outer stator; a rotor provided radially between inner stator and the outer stator; an inner gap distance between the rotor and the inner stator; and an outer gap distance between the rotor and the outer stator. An average of the inner gap distance is between 75 and 80 percent of an average of the outer gap distance.

It is provided a multi-stator rotating electrical machine including: an inner stator; an outer stator; a rotor provided radially between inner stator and the outer stator; an inner gap distance between the rotor and the inner stator; and an outer gap distance between the rotor and the outer stator. An average of the inner gap distance is between 75 and 80 percent of an average of the outer gap distance.