Single-phase generator with annular armature winding
SUBSTANCE: invention relates to electrical engineering and design of electrical machines, particularly single-phase alternating current generators. The technical result achieved by using the present invention is considerably high efficiency and improved electromechanical properties of single-phase generators. Said technical result is achieved due to that in a single-phase synchronous generator with an annular armature winding, consisting of an armature and an inductor, separated by an air gap, according to the invention the armature consists of two series-connected annular windings with semi-annular ferromagnetic cores, the nearest rectangular ends of which are attached by nonmagnetic bushings, and the inductor consists of a central cylindrical core mounted on a rotating shaft, wherein on diametrically opposite surfaces of the core there are two rod-shaped permanent magnets with concave like poles. During operation of the generator, turns of the annular windings are penetrated by induction field lines of one direction, originating from like poles of the permanent magnets of the inductor.
EFFECT: structure of the armature enables to direct magnetic field lines thereof around a circle and considerably reduces not only active, but inductive resistance armature windings as well.
The invention relates to the field of electrical machines, particularly to machines of alternating current.
The closest analogue is proposed single-phase synchronous generator with excitation from permanent magnets.
Called the generator along with the known advantages and has some drawbacks. It has a relatively low efficiency and poor adjustability of the speed of the rotor in the motor mode. This is primarily due to the fact that it inductor during the rotation induced in the coils armature winding currents such directions that the back of its magnetic poles on the armature will always be the electromagnetic poles of the opposite polarities of the first, and in front of them - like poles. Furthermore, his anchor windings sufficiently large resistance and inductive reactance.
The technical result of the claimed invention - a significant increase efficiency, improve its Electromechanical characteristics.
The technical result is achieved by the fact that the armature winding in the proposed design of the generator ring instead of the commonly used loop, and a ferromagnetic core is divided into two half and has two sides with non-magnetic gaps between them. In addition, their coils prorezyvajutsja during power lines - induction one direction emanating from the same pole Kee is different magnets of the inductor. This design of the anchor allows you to direct its magnetic lines of force around the circle, not the diameter, as it usually occurs in analogue with a loop windings and with a closed magnetic circuit. It can significantly reduce not only active, but also inductive reactance of the windings his anchor.
The proposed single-phase generator with an annular anchor winding, made in the form of a single-phase synchronous generator, consisting of the armature and inductor separated by an air gap, characterized in that the anchor consists of two connected in series ring windings with semicircular ferromagnetic cores, the next rectangular ends are glued nonmagnetic inserts, and the inductor consists of placed on the shaft of rotation of the Central cylindrical magnetic core, and at the opposite surfaces of which has two rod-like permanent magnets with the same concave poles.
Figure 1 and 2 show respectively transverse and longitudinal sections of the proposed generator.
Figures 1 and 2 the following notation: 1 - conductor of electric current, 2 - non-magnetic gap, 3 - open magnetic anchors, 4 - ring armature windings 5 - permanent bar magnet with convex and concave poles of the inductor 6 is a Central magnetic core Indus is Chora, 7 - electrical output of the generator.
Single-phase generator with an annular anchor winding operates as follows. When rotating with the external engine inductor generator starts to rotate, for example, clockwise. In this case, the turns of the winding 4 of the armature induced EMF of the same sign. But on the electrical output 7 will be supported for a certain AC voltage. This is due to the fact that every time the magnetic poles of the permanent magnets 5 of the inductor are non-magnetic gap 2 of the armature core, alternating magnetization, which causes the windings 4 of the armature EMF another sign. This induction variables currents flowing through the coils of the winding 4 of the anchor part is subjected to application of its ferromagnetic core 3 so that the magnetic lines of force will always be directed in a circle through the non-magnetic gap 2, which will be the electromagnetic poles of both polarities. In this case, around the circle during the entire cycle of rotation of the inductor will not be a separate magnetic poles, preventing movement of the latter, as it usually happens in the case of loop windings.
The proposed generator can operate in motor mode. If you send from a special source or from a fixed header on the electrical output 7 of the alternating voltage of the same sign with the frequency duhks the things rotational speed of the rotor, then every time the pole of the permanent magnet 5 will be in the field windings 4 anchors, in his coils will always leak currents in the same direction. This leads to the electromagnetic interaction with the permanent magnet 5 of the rotor, which starts to rotate, the direction of which is determined by the left-hand rule. At the same time ferromagnetic cores 3 of the stator will not be satisfied currents from the network in one direction. This is achieved by the fact that for each passage of the permanent magnet 5 of the rotor area of a non-magnetic gap 2 they will paramagnetically.
Sources of information
1. Bertino A.I. and other Homopolar electric machine with liquid metal current collectors. - M.-L.: Energy, 1966.
2. Bertino A.I. Special electrical machines. - M.: Energy, 1982.
3. Booth, D.A. Contactless electrical machines. - M.: high school, 1990.
4. Herod I.A. Electromagnetism. - M.: Binom, 2003.
5. Kalashnikov YEAR Electricity. - M.: Nauka, 1985.
Single-phase generator with an annular anchor winding, made in the form of a single-phase synchronous generator, consisting of the armature and inductor separated by an air gap, characterized in that the anchor consists of two connected in series ring windings with semicircular ferromagnetic cores, the next rectangular ends of which prickle who are non-magnetic inserts, and the inductor consists of placed on the shaft of rotation of the Central cylindrical magnetic core, and at the opposite surfaces of which has two rod-like permanent magnets with the same concave poles.
SUBSTANCE: invention relates to automotive industry, namely, to car steering wheel electromechanical booster. Proposed booster comprises housing accommodating two aligned shafts (input and output), m-phase motor excited from tangentially magnetised permanent magnets, stator magnetic core built in booster housing, rotor magnetic core, rotor position pickup and torque pickup. Stator magnetic core features salient poles arranged in Nm equal alternating phase zones, where N is number of phase zones, and with Nmk poles, where k=1…n is number of poles in phase zone whereon coils are fitted, one per one pole. Several coils connected in parallel aiding are arranged in each zone. Rotor windingless multi-pole magnetic core is fitted on output shaft. Number of poles on stator and rotor differ by N. Torque pickup is made up of torsion box and torsion box twisting angle metre. Torsion box is arranged inside space formed by input and output shafts. Pole tips are arranged on stator poles via nonmagnetic air gap, whereto like poles of excitation system permanent magnets adjoin.
EFFECT: improved ergonomics due to reduced force to applied to steering wheel.
4 cl, 4 dwg
SUBSTANCE: invention relates to the field of electric engineering and may be used in three-phase machines with excitation from permanent magnets. Proposed three-phase synchronous motor consists of three-phase stator, winding of which create rotary magnetic field, and rotor, which comprises bushing of non-ferromagnetic material, strip of excitation from ferromagnetic plates with layers of plates of permanent magnets and additional poles of ferromagnetic material with layers of non-ferromagnetic material installed along radial axes of additional poles.
EFFECT: provides for maximum efficiency of motor determined by ratio between useful mechanical capacity developed by motor (Pmech use) and electric power consumed by motor (Pel cons).
SUBSTANCE: syncronous generator includes stator magnet core made from laminated electrical steel having explicit poles where stator windings are situated, and rotor including rotor ferro-magnetic bushing where excitation poles are located. Besides according to the invention, ferro-magnetic shields are located at both sides of each pole. The said rotor bushing is manufactured with radial grooves being located under each excitation pole to ensure full excitation flowing through rotor poles and stator winding flows through the said shields and rotor bushing with maximum possible distance of stator flow in rotor bushing from excitation poles.
EFFECT: improved effectiveness of synchronous generators defined as ratio of available mechanical power produced by generator to mechanical power consumed by generator.
SUBSTANCE: invention relates to the field of electric engineering and in particular to slow-speed high-torque electric motors, electric drives and generators, relates to peculiarities of design of contactless magnetoelectric machines with electromagnet reduction and may be used in systems of automatics, as motor-wheels, motor-drums, starter-generators, electric steering boosters, direct drives in domestic appliances, electric drives of concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for liquids pumping, mechanisms with high torques on shaft and low frequencies of its rotation, and also in wind generators, hydraulic generators, high-frequency electric generators and synchronous generators of frequency converters. Proposed contactless redactor magnetoelectric machine with pole geared inductor comprises stator, anchor core of which is assembled from insulated sheets of electrotechnical steel with high magnetic permeability and has explicit poles, on inner surface of which there are elementary cogs provided, coil m - phased winding of anchor, each coil of which is arranged on according explicit pole of anchor by one on each pole, and rotor comprising inductor with geared poles symmetrically distributed along cylindrical surface with identical number of elementary cogs on each pole, between geared poles of inductor there are permanent magnets installed, which are magnetised in tangential direction. When certain ratios are maintained between number of explicit poles of anchor, number of elementary cogs on explicit pole of anchor, number of explicit poles of anchor in phase, common number of anchor cogs, number of geared poles of inductor, common number of inductor cogs, number of elementary cogs on geared pole of inductor and number of phases in m-phased winding of anchor in contactless reductor magnetoelectric machine with pole geared inductor.
EFFECT: provides for high power and operational indices, high specific rotation torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, and high specific power at high frequencies of EMF in mode of electric generator.
10 cl, 11 dwg
FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and can be used in washing machine motors. The motor with intensive magnetic flux incorporates circular stator with the winding wound on multiple teeth arranged radially. The rotor is fitted in the stator center and comprises a circular rotor core, multiple teeth extending from the aforesaid core and towards the stator and multiple magnets arranged between the said magnets teeth. The section of the joint between the circular rotor core and the tooth is furnished with a small-diameter hole to receive the guide pin. Note also that the bridge connecting the adjacent teeth, or in the end section of the tooth abutting on the circular rotor core, is furnished with a barrier to eliminate the magnetic flux dissipation.
EFFECT: motor higher torque and smaller sizes.
7 cl, 12 dwg
FIELD: electric engineering, in particular, electric motors with constant magnets.
SUBSTANCE: electric motor with constant magnets includes stator with a winding wound on it and a rotor with magnets. Magnets of the rotor are made of different materials which have different energy values. Thickness of a strong magnet is less than thickness of weak magnets.
EFFECT: reduced growth of material costs of manufacture of magnets, improved torque and increased power of electric motor.
8 cl, 5 dwg
FIELD: electrical engineering; mechanical design of permanent-magnet excited synchronous machines.
SUBSTANCE: proposed compensated and permanent-magnet excited split-phase generator has two stators identically disposed on its longitudinal axis and two rotors disposed on generator center line; novelty is that stators have salient poles with stator windings placed about them; stator pole size along internal circumference of stators and size of rotor poles along rotor external surfaces is 90 electrical degrees, rotors being shifted relative to one another around axis of revolution by 90 electrical degrees; rotor poles are permanent magnets; stators and rotor backs are made of thin-sheet electric steel and covered with insulation.
EFFECT: simplified mechanical design of split-phase generators.
1 cl, 2 dwg
FIELD: automotive industry; steering systems of automobiles.
SUBSTANCE: invention is designed for reducing effort on steering wheel. Stator of electric motor is provided with magnetic circuit with n salient poles and rotor, with n-2 poles in form of permanent magnets. Three-phase winding of stator contains coils arranged in six equally alternating phase zones, one coil for pole, several coils belonging to one phase in each phase zone. Winding coils in phase zones belonging to one phase are connected In parallel aiding. Inlet and outlet shafts arranged in booster housing are interconnected by torsion bar being sensitive element of torque sensor and coupled with steering wheel and steering mechanism by other ends. Rotor of electric motor is installed on outlet shaft. Stator winding controllable supply, rotor position pickup and control unit are provided. Inputs of the latter are connected with outputs of torque sensor and rotor position pickup, and output is connected to control input of said supply source. Group if inventions makes it possible to improve manufacturability of electric motor and steering booster as a whole.
EFFECT: improved operating characteristics, safety and comfortability of steering.
5 cl, 3 dwg
FIELD: electric engineering and electric-mechanical engineering, in particular - constructions of rotors for high-speed electric machines.
SUBSTANCE: rotor of high-speed electric machine contains yoke 1 with permanent magnets 2 positioned thereupon, on which polar end pieces 3 are mounted. Yoke 1 is made in form of evenly alternating magnetic and non-magnetic circular plates 4,5. on external and internal surface of polar end pieces 3 concentrically to rotor axis internal and external circular grooves are made. Internal circular grooves are mounted on external rings 6, connected by links to non-magnetic plates 5. by selecting relation between number of external and internal circular grooves it is possible to provide for optimal thickness of measuring portion of yoke 1 and its radial size. Due to decreased loads of polar end pieces 3 and bandage 7, achieved by making circular and linear slit grooves 10 on external surface of polar end pieces, mechanical durability and operational reliability of device are increased.
EFFECT: improved reliability of presented rotor by increasing its mechanical durability and manufacturability.
5 cl, 4 dwg
SUBSTANCE: low-speed current generator has, mounted on a shaft, a rotor with a multipolar system of permanent magnets, a stator in form of a magnetic conductor and stator windings, leads of which are connected to corresponding rectifier units, a high-frequency pulse master generator and as many power correctors as there are rectifier units, each connected to the output of the corresponding rectifier unit and control inputs of which are connected to the output of the high-frequency pulse master generator, wherein the stator is single-sectional, and the number of poles of the rotor differs by one from the number of stator windings, the stator being cogless.
EFFECT: high stability of operation of the generator.
3 cl, 4 dwg
SUBSTANCE: magnetic generator comprises a non-magnetic body, in which cores of working windings of a stator and a rotor made of non-magnetic material are fixed and evenly distributed along the circumference. Cores of the working winding of the stator consist of an H-shaped magnetic conductor and two fixed DC electromagnets installed at its ends, and mobile DC electromagnets are fixed on the rotor. Poles of DC electromagnets of the rotor are aligned in turns as like and unlike towards the specified poles of DC electromagnets of the H-shaped magnetic conductor. During rotor rotation, as at least one DC electromagnet of the rotor aligned in a heteropolar manner approaches one DC electromagnet of the H-shaped magnetic conductor of the stator working winding, the magnetic flow between their poles is closed, and inducing of electromotive force on the working winding of the stator is provided by two other DC electromagnets of the rotor and stator aligned in a unipolar manner. Simultaneous interaction of DC electromagnets of the rotor and stator aligned in a unipolar and heteropolar manner creates an effect of magnetic balance.
EFFECT: higher efficiency factor by usage of DC electromagnet energy.
SUBSTANCE: method to manufacture a rotor (14) is proposed for an electric machine (13), including the following stages of its realisation: a) manufacturing of a magnetic element (8) by means of adhesion of permanent magnets (1, 1', 1", 1'") to each other with the help of the first glue, at the same time each permanent magnet (1, 1', 1", 1'") has one side (2) with the magnetic north (N) and one side (3) with the magnetic south (S), at the same time permanent magnets (1, 1', 1", 1'") when adhered are arranged so that sides of the magnetic north (N) or sides of the magnetic south (S) form a common lower side (3, 3', 3", 3'") of the magnetic element (8), at the same time the first glue in the hardened condition has the solid consistency; b) adhesion of the lower side of the magnetic element (8) with the yoke (12) with the help of the second glue, at the same time the second glue in the hardened condition is soft and elastic, which eliminates break of the second glue as the temperature of expansion of the magnetic element (8) and the yoke (12) increases. At the same time the yoke (12) in the place where the magnetic element (8) is adhered to the yoke (12), has the soft and elastic layer (2).
EFFECT: provision of rationality of rotor manufacturing process with permanent magnets with simultaneous provision of high reliability of permanent magnets fixation with closure on material of an electric machine rotor yoke.
3 cl, 7 dwg
SUBSTANCE: electric machine with transverse magnetic flux includes at least three phases, each of which is formed with core stator and windings. All the above phases are arranged in common housing. Parallel connected electric lines are branched from the above phases. There is also current converter from current source, which is formed with inductors connected in each of the above electric lines, switching circuit and switching capacitors. All the above components are placed in common housing. Two versions of the present invention are proposed.
EFFECT: simplifying layout of electric machine with transverse magnetic flux.
15 cl, 13 dwg
SUBSTANCE: electric motor contains a rotor with pole permanent magnets magnetised radially and number of poles more than two and a stator consisting of a magnet core in the form of a hollow cylinder and a symmetrical three-phase biplane single-layer winding at inner surface with minimum gaps required for stator assembly between lateral surfaces of working areas of the coils. Working areas of the coils are located along the electric motor axis; at that number of coils in a phase circuit is selected as equal to the number of pole permanent magnets of the rotor.
EFFECT: increasing specific electromagnetic torque of an electric motor by improvement of operating efficiency of its stator winding.
SUBSTANCE: electric machine has a hermetically sealed housing, inside of which there is an interleaved stator core which rests on the housing of the electric machine by the external diameter. The stator core is provided with open grooves which accommodate spools. The spools of each stator groove are fixed by a wedge and a splined insert in contact with it, the cross-section of which can fix the back of the splined insert under the wedge of the groove. The surface of the back of the splined insert on its entire length is provided with a longitudinal channel which opens inside the housing of the electric machine, which is configured to feed compressed gas therein. The splined insert has radial holes, wherein the volumes of the splined inserts which protrude over the surface of the cavity of the stator core are merged into a tubular bushing, preferably composed of segments with formation of an inner surface of a cylindrical shape. Inside the housing, there are cylinder bushings, the cavity diameter of which is equal to the diameter of the tubular bushing. Between the ends of the stator core and the ends of the cylinder bushings facing them, there are stopper rings, the cavity of which is greater than the diameter of the cylindrical cavity of the stator core, provided with a shoulder which encircles part of the outer surface of the cylinder bushing. The stopper rings are made from nonmagnetic material and are fastened with the stator core. The cylinder bushings are mounted with possibility of radial displacement relative the longitudinal axis of the cylindrical cavity of the stator core, for which contacts of the bushings with the housing, an end shield and stopper rings are provided with seal rings, which can be elastically deformed radially and along the longitudinal axis of the stator core. The rotor has an inductor with a cylindrical outer surface, made from poles consisting of permanent magnets, nonmagnetic wedges and a shaft, the length of which exceeds that of the inductor. The ends of the inductor are rigidly fastened to end cylinder bushings made from nonmagnetic material, placed flush with the outer surface of the inductor, which is provided with a band, the outer surface of which has a cylindrical shape which corresponds on the diameter and roughness to the outer surface of the end cylinder bushings, wherein a gas bearing is formed by the gap between the inner cylindrical surfaces of segments of the splined inserts, cylinder bushings and the outer surface of end cylindrical inserts and the rotor band; furthermore, the axial bearing assembly of the electric machine has axial lobed gas bearings and a bearing disc.
EFFECT: reduced weight and size and longer service life of electric machines, including electric machines operating at high rotary speeds, while ensuring minimal rotor bowing, better cooling of the rotor and stator coil.
3 cl, 2 dwg
FIELD: electrical engineering.
SUBSTANCE: in the suggested generator containing permanent magnets at rotor, fan and electronic module according to the invention in the area of radial surfaces of the stator end windings there is a centrifugal radial fan made in form of plates at the rotor, at that axes of magnets at the rotor are located at the angle towards the rotor axis and electronic module is located in space between the stator winding and rotor shaft.
EFFECT: increased reliability and reduction of generator dimensions.
FIELD: engines and pumps.
SUBSTANCE: proposed permanent magnet motor consists of n equal modules, each of which includes a housing, a stator with phase windings, a rotor with constant magnets, which are magnetised in radial direction. Similar phase windings of adjacent modules are connected in series, housings and rotors of modules are connected to each other mechanically, and each module includes circular orientation elements of the stator with phase windings and rotors. At that, according to this invention, in each rotor, one half of magnets is offset relative to the other half in a circumfenertial direction by the half of the tooth division of stator tzs, and in adjacent modules, similar magnets of rotors are offset in a circumferential direction through value tzs/(2n).
EFFECT: improvement of start-up properties of permanent magnet motor owing to reducing pulsations of reactive moment; providing reliable connection of modules and permanent magnet motor as a whole.
2 cl, 5 dwg
SUBSTANCE: invention refers to design of contactless magnetoelectric machines with electromagnetic reduction, and can be used in direct drives, in automation systems, in mechanisms with high moments on the shaft and low rotation frequencies of the shaft, as well as high-frequency electric generators and synchronous frequency converters. The proposed reduction magnetoelectric machine with pole gear-type inductor includes stator, the armature core of which is charged and has salient poles, on inner surface of which elementary teeth are made, coil m-phase armature winding, each coil of which is arranged on the corresponding salient pole of the armature, one on each pole, and rotor containing an inductor with toothed poles with equal number of elementary teeth on each pole, which are symmetrically distributed along cylindrical surface; constant magnets magnetised in tangential direction are located between toothed poles of the inductor. When performing certain relations between the number of salient poles of the armature, number of elementary teeth on salient pole of the armature, number of salient armature poles in the phase, total number of armature teeth, number of toothed poles of the inductor, total number of inductor teeth, number of elementary teeth on toothed pole of the inductor and number of phases of m-phase armature winding of reduction magnetoelectric machine with pole toothed inductor, the method is implemented.
EFFECT: providing high power and operating characteristics, high specific torque moment on the shaft and high electromagnetic reduction of rotation frequency in electric motor mode, as well as high specific power at high EMF frequencies in electric generator mode.
5 cl, 5 dwg
SUBSTANCE: electric motor comprises a salient-pole stator with a control winding and a rotor with poles from permanent magnets arranged on ends and adjacent parts of side surfaces of a rotor magnetic conductor. Between adjacent magnets of the rotor pole arranged on the end and adjacent parts of side surfaces of the rotor magnetic conductor, additional magnets are introduced, polarity of which matches polarity of the rotor pole.
EFFECT: higher efficiency of operation of a magnetic system of an electric rotor and its specific torque and efficiency increase.
FIELD: electrical engineering; mechanical design of commutatorless magnetoelectric machines.
SUBSTANCE: rotor magnetic system has more than two magnetically permeable steel laminations with pole horns formed by prismatic tangentially magnetized N-S permanent magnets placed inside laminated stack; inner and outer diameters of laminations are uninterrupted and rectangular prismatic magnets are installed inside them so that distance over outer arc between external planes of two adjacent magnets of unlike-polarity poles is shorter than that over internal arc between same planes; magnets do not contact one another and have at least one projection on inner diameter for coupling with rotor shaft.
EFFECT: enhanced manufacturability.
3 cl, 2 dwg