Abstract: Disclosed are single- and poly-phase transverse and/or commutated flux machines and components thereof, and methods of making and using the same. Exemplary devices, including polyphase devices, may variously be configured with an interior rotor and/or an interior stator. Other exemplary devices, including polyphase devices, may be configured in a slim, stacked, and/or nested configuration. Via use of such polyphase configurations, transverse and/or commutated flux machines can achieve improved performance, efficiency, and/or be sized or otherwise configured for various applications.

Abstract: In a ring body of a stator, permanent magnets are arranged in alternate inter-pole magnetic path portions located between an even number of stator poles so that magnetic fields pointing in the circumferential direction of the ring body are generated. Coils are wound around alternate inter-pole magnetic path portions where permanent magnets are not provided so that magnetic fields that oppose the magnetic fields generated by the permanent magnets are generated. When electric power is not supplied to the coils, a ring-shaped magnetic circuit is formed by the permanent magnets, and therefore, magnetic flux does not leak to a rotor. When electric power is supplied to the coils, the magnetic flux of the magnetic fields of the permanent magnets and that of the coils combine with each other and flow from the stator poles to rotor poles of the rotor, whereby strong attraction force is obtained.

Abstract: Flux-switching electrical machines. In particular, a flux-switching electrical machine having a stator and a rotor. The stator has permanent magnets, armature windings and excitation windings, and the rotor has no winding or permanent magnet but includes a plurality of flux-switching teeth. The stator is generally formed by a succession of elementary cells, each cell being intended to interact with only a single tooth of the rotor at a time. Each cell includes one of the permanent magnets; a first slot for at least partly housing one of the excitation windings at least; and second slots for housing one of the armature windings.

Abstract: The present invention provides a dynamoelectric machine that enables permanent magnets to be held stably in trough portions that are formed on portions of a yoke portion that are positioned between adjacent claw-shaped magnetic pole portions. In a dynamoelectric machine according to the present invention, first and second magnet holders are disposed so as to span first and second trough portions that are formed on portions of first and second yoke portions that are positioned between circumferentially adjacent first and second claw-shaped magnetic pole portions, and first and second permanent magnets are held by the first and second magnet holders so as to face inner circumferential surfaces near tip ends of the claw-shaped magnetic pole portions so as to have a predetermined clearance.

Abstract: The aim of the invention is to provide a robust, simple woodworking machine. To achieve this, the invention provides a machine comprising at least one linear direct drive, which contains a primary part (3, 3a, 3b, 4, 4a, 4b) with a first element (9, 10, 12, 14) for generating a first magnetic field and at least one additional element (17, 18, 20, 27, 28, 29, 30) for generating an additional magnetic field. The first element (9) for generating the first magnetic field is positioned, in particular, in such a way in relation to the additional element (17, 18, 20, 27, 28, 29, 30) for generating the additional magnetic field that the first magnetic field overlaps the additional magnetic field. The machine also comprises a secondary part (5, 6, 6a, 6b), which comprises magnetic return elements and is devoid of magnetic sources.

Abstract: Disclosed are transverse and/or commutated flux machines and components thereof, and methods of making and using the same. Certain exemplary stators for use in transverse and commutated flux machines may be configured with gaps therebetween, for example in order to counteract tolerance stackup. Other exemplary stators may be configured as partial stators having a limited number of magnets and/or flux concentrators thereon. Partial stators may facilitate ease of assembly and/or use with various rotors. Additionally, exemplary floating stators can allow a transverse and/or commutated flux machine to utilize an air gap independent of the diameter of a rotor. Via use of such exemplary stators, transverse and/or commutated flux machines can achieve improved performance, efficiency, and/or be sized or otherwise configured for various applications.

Abstract: There is provided a bearingless step motor in which a rotating shaft can rotate while rising from a main body by a magnetic force without using a mechanical bearing. The bearingless step motor comprises a stator including stator cores having winding portions and a rotor including a rotating shaft and rotor cores. The rotor rotates by a magnetic interaction between the rotor cores and the stator cores. A first permanent magnet is mounted to the rotor and a second permanent magnet is mounted to the stator. The first permanent magnet and the second permanent magnet are arranged so that a repulsive force is generated between magnetic poles. There is little power consumption for raising the rotating shaft and a complicated system for controlling the rise of the rotating shaft is unnecessary. Thus, the motor can be manufactured with a light and compact structure.

Abstract: A rotor (1) for a rotary electrical machine, which includes two pole wheels (2) having a series of axial claw poles (20) of a trapezoidal overall shape which extend axially from the extreme radial outer edge of the pole wheel (2a) toward the other pole wheel (2b), such that each pole claw (20a, 20b) of a pole wheel (2a, 2b) is situated in the space which exists between two consecutive claw poles (20a) of the other pole wheel (2b). The rotor (1) includes magnetic assemblies (3) in the interpole space (22). An assembly (3) is composed of at least one magnetic member (31) and at least one magnet (30), received in a groove (21) made in each of the facing edge faces of the two adjacent claw poles (20a, 20b). This has the advantage of increasing the cross-section for the flow of rotor flux towards the stator, and of enabling the same milling cutter as has already been used to make the grooves in the edge faces of the claw poles.

Abstract: A linear actuating device contains a top magnet and a bottom magnet. The bottom magnet is axially aligned with the top magnet. The top magnet and the bottom magnet have opposing magnetization. A washer is sandwiched between the top magnet and the bottom magnet. A top coil is positioned within the top magnet. A bottom coil is positioned within the bottom magnet. A slug is slidably positioned within the top coil and bottom coil. An actuating member is integral with the slug.

Abstract: In a hybrid magnetic bearing, the electromagnet has a core wound with a control coil and has a main pole and a commutating pole with a commutating pole permanent magnet provided approximately parallel to each other at predetermined intervals in a protruding condition radially or axially to the rotor. In the magnetic bearing provided radially, two electromagnets are placed oppositely to each other across the rotor in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets. In the magnetic bearing provided axially, two electromagnets are placed in parallel in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets.

Abstract: An alternating-current dynamoelectric machine according to the present invention includes: a stator including: a stator core in which slots that extend in an axial direction are formed on an inner side; and a stator winding that is mounted to the stator core by winding conducting wires into the slots; and a rotatable rotor including: a field winding that is disposed inside the stator; a rotor core constituted by a first pole core and a second pole core that each have claw-shaped magnetic poles that are disposed so as to cover the field winding and that alternately intermesh with each other; and first and second permanent magnets that are respectively disposed on two facing side surfaces of adjacent claw-shaped magnetic poles and that have magnetic fields that are oriented so as to reduce leakage of magnetic flux between the claw-shaped magnetic poles, and a magnetic body is disposed between a pair of the first and second permanent magnets.

Abstract: An electrical power system may comprise a main generator with a rotor having field windings and at least one embedded permanent magnet. A generator control unit (GCU) may be connected to receive excitation current produced by the main generator with flux from the at least one permanent magnet. An exciter generator may be connected to be provided with excitation from the GCU. The exciter generator may provide excitation current to the field windings of the main generator. The main generator may produce output current from flux from the field windings and the at least one permanent magnet.

Abstract: A synchronous electric machine having a fixed stator, a multi-phase stator winding and having a rotor which has poles, excited in a predefined sequence, over its circumference, the number of poles being changeable as a function of the intensity and the direction of a field current in at least one field coil of the rotor. For improving the efficiency of the machine and for reducing the number of field coils and the entire coil cross section it is provided that the rotor has a laminated core, laminated in the axial direction, which has grooves on the circumference for accommodating the at least one field coil and that the at least one field coil is situated on the circumference of the rotor with a step size which corresponds to the pole pitch of the lower number of poles.

Abstract: A dynamoelectric machine includes first and second magnet seat portions disposed to project from portions of first and second yoke portions that face respective inner circumferential surfaces near tip ends of second and first claw-shaped magnetic pole portions, and magnet housing portions disposed integrally to extend axially outward from outer circumferential portions of a pair of flange portions of a bobbin, extend near the first and second yoke portions that face the inner circumferential surfaces near the tip ends of the first and second claw-shaped magnetic pole portions, and be held by the first and second magnet seat portions.

Abstract: An actuator assembly includes a motor assembly, a harmonic drive gearbox, an actuator, and an electromagnet brake device. The actuator assembly is fairly compact in size and the electromagnetic brake device is a non-contact type of devices, making it less prone to wear as compared to many other brake devices.

Abstract: The brushless motor includes a first permanent magnet magnetized in a direction perpendicular to the drive direction, and a electromagnetic coil wound around an axis parallel to the drive direction. The drive control circuit supplies a drive current in a given first electric current direction to the electromagnetic coil without changing the electric current direction to operate the brushless motor in the drive direction.

Abstract: A rotating electrical machine rotor which comprises: a rotary shaft; two field spiders which have the same diameter ranging between 90 and 120 mm and which are mounted centred on the shaft, each field spider comprising a circular radial plate; prongs extending axially toward the other field spider so as to nest tangentially between two adjacent axial peripheral prongs of the other field spider; an interpolar tangential space left between the opposing parallel lateral faces of two consecutive prongs of each field spider; and at least one ferromagnetic interpolar element the width (Lf) of which is defined orthogonal to the lateral faces of the adjacent prongs. According to the invention, the active width (Lf) of the ferromagnetic element is between 5 mm and 6 mm.

Abstract: An electric generator rotor having one or more permanent magnets coupled thereon. The permanent magnets provide a constant magnetic field in the rotor at all times, therein minimizing the effect of rotor residual magnetism on the start-up characteristics of the electric generator. The type and placement of the one or more permanent magnets on the rotor and/or magnetic field confinement techniques may be utilized to control spatial distribution of magnetic field within the rotor.

Abstract: A dynamoelectric machine including first and second permanent magnets held by first and second magnet seats on first and second yoke portions so as to face inner circumferential surfaces of tip end portions of first and second claw-shaped magnetic pole portions. The first and second permanent magnets are magnetically oriented in a reverse direction to orientation of a magnetic field that the field coil produces. The dynamoelectric machine enables permanent magnet holding reliability to be increased, induced voltage during no-load de-energization to be suppressed, and thermal demagnetization of magnets due to high-frequency magnetic fields that are induced by stator slots to be avoided.

Abstract: The invention concerns a rotating electrical machine comprising a stator enclosing a rotor including permanent excitation magnets (20, 24, 26, 30) capable of producing magnetic fluxes, and excitation coils (22, 28), capable of being excited or not and generating flux constituents which can counter the fluxes generated in the magnets, wherein the number (Na) of magnets and the number (Nb) of excitation coils as well as the mutual arrangement of the coils and the magnets relative to one another from an elementary pattern (me), said numbers Na of magnets, Nb of coils and Nme of elementary patterns capable of being modified depending on the desired basic intensity (Ibase) in the machine, said basic intensity being determined when the coils are not excited and on the desired modulation intensity (Imod) in the machine, said modulation intensity being determined when the coils are excited.

Abstract: An electric motor (10) has a field pole formed by a field current passing through a field winding (50). A voltage booting converter (120) converts output voltage of a battery (B) and outputs the voltage between a power source line (107) and a grounding line (105). Field winding (50) is electrically connected onto an electric current channel between battery (B) and power source line (107) and formed so that voltage switched by a switching element (Q1) is applied to both ends. A controller (100) controls the field current so as to adjust density of magnetic flux between a rotor and a stator by performing switching control on switching element (Q1) and a switching element (Q3) connected in parallel to field winding (50) and converts the output voltage of battery (B) into voltage in accordance with a voltage command value.

Abstract: In a hybrid magnetic bearing, the electromagnet has a core wound with a control coil and has a main pole and a commutating pole with a commutating pole permanent magnet provided approximately parallel to each other at predetermined intervals in a protruding condition radially or axially to the rotor. In the magnetic bearing provided radially, two electromagnets are placed oppositely to each other across the rotor in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets. In the magnetic bearing provided axially, two electromagnets are placed in parallel in an approximately horizontal position, and the rotor is arranged so as to have a predetermined gap with the main pole and the commutating pole, and the permanent magnet is provided between the adjacent electromagnets.

Abstract: Apparatus and methods provide for a high specific power electro-dynamo device that utilizes high-temperature superconductors, a dysprosium core, and superconducting coils to provide power. According to various embodiments, a rotor includes a number of rotor arms with a high-temperature superconductor attached to each arm. A stator includes a number of stator arms with stator coils wrapped around each arm. The stator coils may include superconducting wires for providing a charge to the high-temperature superconductors and non-superconducting wires for inducing a voltage from the trapped flux provided by the superconductors during operation in generator mode. The dysprosium core maximizes the magnetic flux saturated by the core while providing additional safety measures during operation. A backup power wheel or permanent magnets positioned in series with the high-temperature superconductors may provide emergency power at non-cryogenic temperatures.

Abstract: An AC alternator for a vehicle has a rotor having a pair of pole cores, and a stator. A plurality of claw magnetic pole parts are formed in the pole cores. A permanent magnet is placed between a pair of the claw magnetic pole parts so as to prevent leakage of magnetic flux through the area between the adjacent claw magnetic pole parts. The stator and the rotor are placed in the AC alternator so that the stator faces the rotor at a spacing of predetermined intervals. Flanges are formed at both sides of each of the claw magnetic pole parts. The presence of the flanges fixes the permanent magnets to the pole cores, and prevents them from moving toward the outer radius direction measured from the rotary shaft of the rotor. In particular, the thickness of each of the flange parts is increased from the front end part to the bottom part thereof.

Abstract: A rotating electric motor includes a stator core, a rotational shaft capable of rotation, a field yoke allowing a flow of magnetic flux in an axial direction, first and second rotor cores fixedly installed on the rotational shaft, a first magnet fixedly installed between the first rotor core and the second rotor core, a first rotor teeth formed at the first rotor core, a second magnet provided alongside of the first rotor teeth in the circumferential direction of the first rotor core, a second rotor teeth formed at the outer surface of the second rotor core, protruding outwardly in the radial direction, a third magnet provided alongside of the second rotor core in the axial direction, and windings that can control the density of magnetic flux between at least one of the first rotor core and second rotor core and the stator core.

Abstract: A rotating electrical machine is disclosed, the machine comprising a stator 14, 52 and a rotor 10, 50 arranged to rotate inside the stator. The rotor comprises a plurality of permanent magnets 28, 30, 54 arranged to produce a radial magnetic flux in an airgap between the rotor and the stator. The machine also comprises a stationary excitation coil 34, 46, 66. The rotor comprises a plurality of low reluctance elements 32, 58. A current through the stationary excitation coil causes a magnetic flux to be established in a magnetic flux path which passes into the rotor through a first low reluctance element and out of the rotor through a second low reluctance element, which magnetic flux combines with the radial magnetic flux produced by the permanent magnets in the airgap. This arrangement can allow control of the field within a permanent magnet radial flux machine.

Abstract: A rotor of a synchronous motor includes a rotating shaft, a plurality of segments, a plurality of permanent magnets, and a field coil. The segments are located radially outward of the rotating shaft and arranged in the circumferential direction of the rotating shaft at a predetermined pitch with spaces formed therebetween. Each of the segments has a recess making up a magnetic reluctance portion and an opposite pair of ends making up salient-pole portions. Each of the permanent magnets is disposed in one the spaces between the segments with a predetermined orientation of its N and S poles. The field coil is wound around the segments to extend in the circumferential direction of the rotating shaft through the recesses of the segments. The field coil creates, when energized with DC current, magnetic flux which magnetizes the pair of ends of each of the segments in opposite directions.

Abstract: A rotor core has permanent magnets. Magnetic flux of the permanent magnet of an even-numbered rotor magnetic pole part is guided in an axial direction by an axial magnetic path member. Magnetic flux of the permanent magnet of an odd-numbered rotor magnetic pole part is guided into a soft magnetic inner cylindrical part. The axial end faces of the inner cylindrical part and the axial magnetic path member protrude from the rotor core in the axial direction and face a stationary magnetic path member with a small gap therebetween. The amount of magnetic flux of the magnet, which the permanent magnet applies to a stator core is adjusted by an excitation current of an excitation coil wound on the stationary magnetic path member.

Abstract: Hybrid electric reluctance motor, characterized by the fact of its having an arrangement with coils (8) in opposition and permanent magnets (9) in opposition and in parallel with the coils (8) in the stator and/or rotor (2); when the coils (8) of the motor's stators and/or rotors (2) are energized, the magnetic fluxes or fields of the magnets (9) combine with the magnetic fluxes or fields of the coils (8) in the air gap, thus producing a greater torque due to the magnetic flux or field contribution of the magnets (9); the motor's stators and/or rotors (2) are de-energized, the magnetic fluxes or fields of the magnets (9) enter the toroid in relation and in proportion to the same flux reduction in the coils (8) in function of time as a result of the current reduction in function of time.

Abstract: A method and apparatus in which a rotor (11) and a stator (17) define a radial air gap (20) for receiving AC flux and at least one DC excitation coil (23, 24) positioned near the stator end turn to produce DC flux in axial air gaps (21, 22) additive to the AC flux. Side magnets (16) and flux-guiding magnets (14) are provided as boundaries separating the side poles (12a, 12b) of opposite polarity from other portions of the rotor (11) and from each other to define PM poles (12a, 12b) for conveying the DC flux to or from the primary air gap (20) and for inhibiting flux from leaking from said pole portions prior to reaching the primary air gap (20). Side magnets (16), side poles (12a and 12b), flux-guiding magnets (14), ferromagnetic end plates (11c), non-magnetic end plates (12c), and ring bands (37) are optionally provided for performance improvement.

Abstract: Various devices for generating electrical or mechanical output, comprising a coil, a rotor assembly rotatable about an axis, the rotor comprising alternating magnet portion and flux conducting portions, each of the magnet portions having a first end with a first polarity and a second end with the opposite polarity and oriented along the periphery such that the first end of each magnet portion points toward the first end of the previous magnet portion and the second end of each magnet portion points toward the second end of the next magnet portion, a stator assembly having first and second sets of stator flux conductor extensions, each of the stator flux conductor extensions having a stator surface facing the rotor, wherein rotating the rotor assembly about the axis alternates the rotor assembly between a first and a second position, causing magnetic flux to flow. The stator and the rotor may be reversed in operation.

Abstract: Resin pooling grooves are disposed so as to extend over entire regions in a thickness direction of a first magnet holder on two sides of a bottom surface in a width direction of a first receiving groove, and resin pooling grooves are also disposed so as to extend over entire regions in the thickness direction of the first magnet holder on two side surfaces of the first receiving groove near the bottom surface. A first resin injection aperture is disposed through the first magnet holder so as to communicate with the resin pooling grooves over an entire region in the thickness direction. A first permanent magnet is held by the first magnet holder by fitting the first permanent magnet into the first receiving groove together with a first magnet cover, and injecting a resin material into the resin pooling grooves through the first resin injection aperture and hardening it.

Abstract: A driving apparatus includes a first magnet, second magnet, stator, first coil, second coil, first bearing, second bearing and rotor. The first and second magnets respectively have a magnetized portion in which S pole and N pole are alternately magnetized. The rotor has a magnetic pole portion opposite to each magnetized portion. The stator fixes the first magnet and second magnet to the same axis to rotatably support the rotor. The first coil magnetically excites a portion where the magnetic pole portion of the rotor faces the first magnet. The second coil magnetically excites a portion where the magnetic pole portion of the rotor faces the second magnet. Thereby, a driving apparatus is provided which stabilizes the quality by simplifying the configuration of a rotor and makes it possible to realize high speed of rotation and improvement of response speed by decreasing the moment of inertia of a rotor.

Abstract: An inexpensive means of using homopolar technology to test some aspects of magnetic shear and reconnection on a variety of solid, liquid, gaseous, and plasma substances

Abstract: An electric machinery provided with a PM magnetic pole wrapped by conduction winding excited magnetic poles is related to an innovative design of having a PM magnetic pole wrapped by individual magnetic poles of conduction winding excited so to prevent the PM magnetic pole from falling off due to vibration and to prevent from weakening magnetic force by inverse excitation when the electric machinery is running.

Abstract: Electrical generators are provided with toroidally wound stator windings electrically connected in series; a high permeability stator core, preferably an amorphous magnetic alloy material, glassy metal or HYPERCO™ 50 laminations; and a rotor. The toroidally wound stator coils and the stator core trap essentially all of the flux fields generated by the stator coils within the stator core. Since there is essentially no magnetic field leaving the stator, there is essentially no flux field interaction with the field generated by the rotor. The reduction of flux field interaction also reduces counter torque.

Abstract: In a magnet-exciting rotating electric machine, a magnetic excitation part for supplying a magnetic flux between a magnetic salient pole and an armature is composed to be divided into two so as to be capable of being relatively displaced. In this structure, the magnetic flux from the field magnet is divided into a main magnetic flux pathway that passes through the armature side and a bypass magnetic flux pathway that does not pass through the armature, and thereby, the magnetic flux of the main magnetic flux pathway is changed. The magnetic resistances of the main magnetic flux pathway and the bypass magnetic flux pathway are composed to be approximately equal, and then a magnetic force preventing the relative displacement is suppressed small. Thereby, the rotating electric machine system and the magnetic field control method in which magnetic field control is easy are provided.

Abstract: Electrical generators are provided by causing permanent magnets to travel through hollow passageways having electrical conductors flanking or surrounding the space within the passageways. The conductors are disposed in undulating patterns the amplitudes of which are aligned in selected correlated positions relative to the lengths of the passageways and directions of the magnetic flux lines in order to maximize the electromagnetically generated voltage and current in the conductors.

Abstract: A magnetic drive apparatus including a rotor with a rotor magnetic flux generator, a stator with a stator magnetic flux generator and stator magnetic paths, and a magnetic flux controller provided in intermediate positions in said stator magnetic paths for controlling a magnetic flux flowing through the stator magnetic paths.

Abstract: The present invention is a system and method for utilizing magnetic energy. The basic principles of the present invention may be implemented in a variety of systems and methods. A magnet may be rotated or an electromagnet may be controlled in order to control a magnetic field generated by a set of magnets. As a result, numerous, substantial benefits may be achieved by providing at least one set of multiple magnets. For example, the present invention may be used in systems and methods to perform a variety of functions including, but not limited to: (1) to control, manipulate, hold, and/or release a load; (2) to open and/or close a pathway; (3) to open and/or close a circuit; (4) to apply a magnetic field to a load and/or to remove a magnetic field from a load; (5) to intermittently apply and remove a magnetic field; (6) to increase the magnetic field that may be applied to a load; (7) to induce a load into motion; (8) to create energy; and (9) to improve the energy efficiency of a device or system.

Abstract: Stator structures are provided. A stator structure includes at least a magnetic conductive layer and at least a first auxiliary magnetic polar layer. The magnetic conductive layer comprises a plurality of first salient poles. The first auxiliary magnetic polar layer is disposed above the magnetic conductive layer, below the magnetic conductive layer, or between two magnetic conductive layers. The first auxiliary magnetic polar layer comprises at least a second salient pole and a third salient pole. The total number of the second and the third salient poles is equal to that of the first salient poles. The second salient pole comprises permanent magnetic material.

Abstract: A reciprocal linear driving unit and a rolling driving unit are adjacently provided on a common single shaft in axial direction thereof, so that the reciprocal linear driving in the axial direction and the rolling driving around the axis are performed by the single shaft, simultaneously. Permanent magnets constituting the reciprocal linear driving unit and the rolling driving unit are respectively provided on moving object side instead of stator, in other words, they are provided around the axis of the shaft, thereby respective permanent magnets can be miniaturized and light-weighted. Following to this, miniaturization, light-weighting and cost reduction of an actuator and a power toothbrush using the same can be realized.

Abstract: Energy is generated by an apparatus and process which utilize magnetic forces to move a rotor in a circular direction to turn a rotor shaft. This apparatus and process convert magnetic energy into mechanical force, kinetic energy or electrical energy.

Abstract: A shell containing axles, magnets, electronics and diodes that provide for a more efficient generation of electricity. A tubular shell containing a spinning axle, fitted with magnets, magnetic bearings, computer to regulate and control generation functions provides power generation at a higher output to input power ratio than previously seen.

Abstract: A hybrid-excited rotating machine comprising: a stator winding of a multi-phase Y-connection; a plurality of rotor magnetic poles fixed on a rotor shaft 3 at a predetermined spacing in the circumferential direction and confronting the inner circumference of said stator through a air gap; a plurality of permanent magnets fixed at substantially central portions of said circumferential direction of said individual rotor magnetic poles and magnetized in the radial direction of said rotor shaft; and a plurality of field windings wound individually on said rotor magnetic poles.

Abstract: The invention relates to a module (1,3,5,7,9) for a primary part (13,15,17) of an electric machine (19, 21) which is excited by a permanent magnet. Said module(1,3,5,7,9) comprises a permanent magnet (23). Said primary part is produced in a simplified manner due to the use of modules (1,3,5,7,9) for constructing a primary part (13,15, 17). The invention relates to a method for producing a wound module (1, 3, 3, 7, 9) in addition to the module, wherein the module (1,3,5,7,9) is reduced in the cross-section thereof in a region (29) of the positioning of a winding (31). The winding is positioned in the region (29) of the positioning of the winding (31) and the cross-section (55) of the module (1,3,5,7,9) is increased in the region (29) of the positioning of the winding (31).

Abstract: A multi-polar rotary machine comprises a cylindrical outer rotor arranged concentrically with the stator and with an air gap therebetween. The stator has two spaced stator elements and a ring shaped permanent magnet held between the stator elements and magnetized so as to form N and S poles in the axial direction of the stator. Small axially separated stator teeth A and ? and B and B are formed on the outer peripheral surface of the spaced stator elements. Stator windings for A phase and B phase are wound around the respective stator elements. The small stator teeth A, ?, B and B are circumferentially shifted from corresponding small rotor teeth by a ¼ pitch of the small stator teeth, respectively. Each of the stator and rotor is formed of pressed powder comprising a soft magnetic material at least one of a resin and an inorganic material.

Abstract: An electrical generator system includes a source for producing heated gases, a conduit connected to the source for receiving a flow of the heated gases, and a generator assembly positioned in close proximity to the conduit. The generator assembly includes a plurality of magnets positioned in a spaced relationship, the plurality of magnets producing a magnetic field. At least one electrical conductor is positioned adjacent the plurality of magnets to conduct an electrical current generated in response to the flow of heated gases in the conduit and the magnetic field.

Abstract: A multi-polar rotary machine comprises a and a cylindrical outer rotor arranged concentrically with the stator and with an air gap therebetween. The stator has two splitted stator elements and a ring shaped permanent magnet held between the stator elements and magnetized so as to form N and S poles in the axial direction of the stator. Small axially separated stator teeth A and ? and B and B are formed on the outer peripheral surface of the splitted stator elements. Stator windings for A phase and B phase are wound around the respective stator elements. The small stator teeth A, ?, B and B are circumferentially shifted from corresponding small rotor teeth by a ¼ pitch of the small stator teeth, respectively. Each of the stator and rotor is formed of pressed powder consisting of soft magnetic material, and of resin and/or inorganic material.

Abstract: A circuit for the control of a stepper motor having a rotor configured as a permanent magnet and a stator configured of at least first and second energized excitation coils enclosing the rotor. Each end terminal of the first excitation coil is connected to the positive pole of the supply voltage over a switching element and each end terminal of a second excitation coil is connected to the negative pole of the supply voltage over a switching element. The central contacts of both excitation coils are connected to each other.