초록 ▼

Known multi-phase electric machines have conductor lanes which do not sufficiently utilize the space available in the grooves and winding overhang or which are costly to produce. Besides a good utilization of the available space, the length of the conductors in the winding overhangs should be kept s

Known multi-phase electric machines have conductor lanes which do not sufficiently utilize the space available in the grooves and winding overhang or which are costly to produce. Besides a good utilization of the available space, the length of the conductors in the winding overhangs should be kept short in order to obtain high effiency and power densities, and the number of different conductor designs should be minimized in order to reduce production costs. According to the invention, the electric machine consists of several electric pole units which have each a small number of phases and poles with alternating polarity in the direction of displacement. The electric pole units are located next to each other in the air gap and are mutually offset by a fraction of a pole pitch with respect to the rotor poles. Their meandering rectangular conductor wires extend in layers parallel to the air gap. In monophase electric pole units, the conductor insulation is designed for only a fraction of the terminal voltage; by small increments a high effective conductor proportion is achieved. The modular design allows electric machines to be assembled from a few different structural shapes which, because of their simple design, may be produced on a large scale in a totally automated manner.

대표청구항 ▼

[ I claim:] [1.] A multi-phase electric machine comprising at least one stator and one moving part, said stator being separated from the moving part by an air gap, said stator or said moving part containing at least one soft-magnetic body with grooves, said grooves having a width, a depth, and a len

[ I claim:] [1.] A multi-phase electric machine comprising at least one stator and one moving part, said stator being separated from the moving part by an air gap, said stator or said moving part containing at least one soft-magnetic body with grooves, said grooves having a width, a depth, and a length, and located between said grooves are poles where the distance of the central line of adjacent poles is one pole pitch, and arranged in said grooves are conductor lanes and in said soft-magnetic body can flow a magnetic flux, whereinthe machine contains at least two multi-polar electric pole unit (3, 16, 20, 37a-39b), the number of phases of said units being smaller than the number of phases of the entire machine,the poles (45) of the electric pole units (37a-39b) show alternating polarity in the direction of movement of the moving part,the magnetic flux flows in the electric pole units (3a-3d) through soft-magnetic material,the conductor lanes (13, 22, 61) progress in layers (40, 41, 53) parallel to the air gap and in meander pattern in the direction of movement of the moving part over the entire length of the respective electric pole units (3, 37a-39b),the conductors (40, 41, 66) are of a rectangular cross section within the electric pole units,the pole pitch within each electric pole unit (3,37a-39b) is constant,the pole pitch of the moving part or stator (6, 18, 21) is constant over the entire circumference or length of the machine, said moving part or stator lying opposite the electric pole units (3, 16, 20) at the air gap,some of the rigidly connected electric pole units (16a-16d, 20a-20d) are offset by a fraction of a pole pitch against each other with reference to the moving part or stator poles (18, 21) which lie opposite said electric pole units,the electric pole units (30, 31, 32) are arranged successively in either the direction of the groove depth, in direction to the groove or in direction of the movement of the moving part.