An electric motor having low vibration and/or noise comprises a rotor or stator comprising permanent magnets each comprising at least two pole pairs, with an internal flux gap within the permanent magnets between adjacent internal pole pairs. The internal flux gap between the internal pole pairs may be similar to an external pole to pole physical spacing between adjacent poles of adjacent magnets. The motor is suitable for use in for example a laundry washing machine or dryer or washer-dryer.

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.

A disc-type three-degree-of-freedom magnetic suspension switched reluctance motor includes a stator and a double-disc rotor. The stator includes an axial stator core, a permanent magnet ring, and a radial stator core coaxially connected to each other in sequence from outside to inside. Axial suspension teeth are distributed on two axial ends of the axial stator core, several axial torque teeth are evenly distributed between adjacent axial suspension teeth by axial magnetic isolation blocks, and axial suspension windings and axial torque windings are respectively wound on the axial suspension teeth and the axial torque teeth. Radial suspension teeth are distributed on the inner circumference of the radial stator core, radial torque teeth are evenly distributed between adjacent radial suspension teeth by a radial magnetic isolation block, and a radial suspension winding and a radial torque winding are respectively wound on the radial suspension teeth and the radial torque teeth.

A smart motor having a permanent magnet synchronous machine and an electronic control unit, the synchronous machine including one or two permanent magnet rotor(s) and at least one six-phase stator per rotor endowed with at least two three-phase assemblies each formed of three windings electrically coupled in a star, the electronic control unit including one control inverter per stator equipped with six independent arms each configured to control one phase of a six-phase stator. The three-phase assemblies are magnetically and electrically decoupled with respect to one another.

A starter/generator system that includes a first and second electric machine. The first electric machine has a first rotor and a first stator where the first rotor is adapted to receive kinetic energy and the first stator includes a first set of windings. The second electric machine has a second rotor rotatable and a second stator. The second stator is fixed relative to the first stator and the second stator includes a second set of windings.

A permanent magnet laminated motor includes two end plates (15,16) arranged in parallel; a rotating shaft (1) rotatably arranged between the two end plates (15,16); n+1 rotor units (11, 12, 13, 14) and n spacer rings (8, 9, 10) alternately fixedly sleeved on outer rims of the rotating shaft (1) and axially compacted; two magnetic conductive rings (6, 7) tightly sleeved at the outer rim of the rotating shaft (1) and tightly attached to the outer side of the outermost two rotor units (11, 14); and n stator units (37, 38, 39) respectively sleeved at the outer rims of the spacer rings (8, 9, 10). An axial air gap (40) is provided between each stator unit (37, 38, 39) and the adjacent rotor unit (11, 12, 13, 14), and the n stator units (37, 38, 39) are axially fixedly connected to the two end plates (15, 16) by installation screw rods (74, 75).

A permanent magnet laminated motor includes two end plates (15,16) arranged in parallel; a rotating shaft (1) rotatably arranged between the two end plates (15,16); n+1 rotor units (11, 12, 13, 14) and n spacer rings (8, 9, 10) alternately fixedly sleeved on outer rims of the rotating shaft (1) and axially compacted; two magnetic conductive rings (6, 7) tightly sleeved at the outer rim of the rotating shaft (1) and tightly attached to the outer side of the outermost two rotor units (11, 14); and n stator units (37, 38, 39) respectively sleeved at the outer rims of the spacer rings (8, 9, 10). An axial air gap (40) is provided between each stator unit (37, 38, 39) and the adjacent rotor unit (11, 12, 13, 14), and the n stator units (37, 38, 39) are axially fixedly connected to the two end plates (15, 16) by installation screw rods (74, 75).

According to one embodiment, a rotating electrical machine includes an annular winding, a stator core, and a rotor core. At least one of the stator core and the rotor core includes a first member and a second member. The first member and the second member are formed in annular shape. The first member and the second member overlap each other in an axial direction of the shaft. The first member includes a slit-shaped first insulation section. The first insulation section extends in the axial direction. The second member includes a slit-shaped second insulation section. The second insulation section extends in the axial direction. The first member and the second member are integrally connected. The first insulation section and the second insulation section are disposed at different positions in the rotation direction.

According to one embodiment, a rotating electrical machine includes an annular winding, a stator core, and a rotor core. At least one of the stator core and the rotor core includes a first member and a second member. The first member and the second member are formed in annular shape. The first member and the second member overlap each other in an axial direction of the shaft. The first member includes a slit-shaped first insulation section. The first insulation section extends in the axial direction. The second member includes a slit-shaped second insulation section. The second insulation section extends in the axial direction. The first member and the second member are integrally connected. The first insulation section and the second insulation section are disposed at different positions in the rotation direction.