FIELD: electricity.
SUBSTANCE: invention may be used in wide range of machine shaft rotation frequencies (from several rpm to several tens of thousands rpm) in automatics systems, in autonomous electric equipment systems, in military, space engineering, household equipment, on aviation and motor transport, as traction controlled and uncontrolled electric drives, submersible oil pumps, wind-powered generators, hydraulic generators, multi-phase synchronous electric motors, multiphase high-frequency synchronous electric AC generators and multi-phase generators of frequency converters (including three-phase systems), and also, in rectification of output AC voltage and current of generators with the help of semiconductor rectifying devices and with the possibility to use smoothening filters to reduce pulsations of output parameters, as sources of supply with direct (rectified) current, exciters of synchronous generators of mobile mini-power plants, subexciters of main exciters of synchronous generators at stationary power plants. A stator of the contactless magnetoelectric machine with axial excitation comprises a charged core of an anchor with salient poles pressed in a soft magnetic body, being a magnetic conductor of an inductor, a coil multi-phase winding of the anchor, coils of which are arranged on appropriate salient poles of the anchor, one at each pole. The winding-free rotor of the machine comprises a shaft with a non-magnetic bushing placed on it, thickness of which in radial direction is considerably higher than the value of the working air gap, on which there are odd and even inductor cores with pole ledges arranged in a coaxial manner. Number of inductor cores is at least two, even cores of the inductor are displaced relative to odd cores of the inductor in tangential direction by half of pole division of the inductor core. Between cores of the inductor there are circular layers of segment permanent magnets axially magnetized in one direction and arranged in layers so that a unipolar permanent magnetic flow of the inductor is developed. Number of circular layers of segment permanent magnets is by one less than the number of inductor cores. At the same time certain ratios are met between the number of salient anchor poles, number of phases of the multi-phase coil winding of the anchor, number of salient poles of the anchor in the phase and number of pole ledges of each core in the inductor.
EFFECT: production of highly reliable, manufacturable and highly repairable design of the multiphase contactless magnetoelectric machine with axial excitation with high power parameters and operational characteristics at wide range of shaft rotation frequencies and with various ratio of active length and diameter of the machine stator bore.
18 cl, 4 dwg
