Abstract: A stator includes a stator core having slots, a stator coil comprised of three phase windings, phase busbars each electrically connecting a corresponding one of the phase windings to an inverter, and a neutral busbar star-connecting the phase windings to define a neutral point therebetween. In each of the slots of the stator core, there are arranged K in-slot portions of the phase windings of the stator coil in K layers so as to be radially aligned with each other, where K is an even number. The phase and neutral busbars are electrically connected with those in-slot portions of the phase windings of the stator coil which are arranged at the radially outermost layer or the radially innermost layer in the respective slots of the stator core so as to be circumferentially spaced from one another by M slot-pitches or more, where M is a slot multiplier number.

Abstract: A magnetic sensor integrated circuit and a motor component are provided. The integrated circuit includes a housing, a semiconductor substrate arranged inside the housing, input ports and an output port which extend out from the housing, and an electronic circuit arranged on the semiconductor substrate. The electronic circuit includes a magnetic field detection circuit configured to detect and output a magnetic field inductive signal corresponding to an external magnetic field, and a voltage detection circuit configured to detect a specific voltage and output, in a case that the specific voltage reaches a predetermined value, a control signal for controlling the magnetic sensor integrated circuit to perform a preset action. The voltage detection circuit and the magnetic field detection circuit operate simultaneously.

Abstract: The invention relates to a planar positioning apparatus, comprising a stator, which comprises a coil arrangement comprising flat coils, a rotor which is arranged opposite the stator in the operating position of the positioning apparatus and has a planar magnet arrangement comprising a plurality of rows of magnets, wherein the plane which is spanned by the planar magnet arrangement is arranged parallel to the plane of the coil arrangement, a position detecting device for detecting the position of the rotor relative to the stator, and an evaluation and control device for evaluating position signals of the position detecting device and for controlling a current supply to the coil arrangement for controlling the position of the rotor with respect to the stator, wherein the coil arrangement comprises in each case n×3 (n?1) elongate flat coils which are interleaved with one another, in a first and second orientation of the coil arrangement which, over the majority of their extent, are designed as conductor runs of

Abstract: A sensor integrated circuit includes a rectifier, a power supply module, an output control circuit and a detecting circuit. The rectifier is configured to convert an external power supply into a first direct current power supply. The power supply module includes a voltage regulator configured to generate a second direct current power supply different from the first direct current power supply. The detecting circuit is powered by the second direct current power supply and configured to detect an inputted signal and correspondingly generate a control signal. The output control circuit is configured to control, in response to at least the control signal, the sensor integrated circuit to operate in at least one of a first state in which a current flows out from an output port and a second state in which a current flows in from the output port.

Abstract: A brushless motor includes: a stator including an annular stator core and first through twelfth teeth provided circumferentially on an inner circumference of the stator core in a sequential order; first through twelfth coils wound around the first through twelfth teeth, respectively, and forming a delta connection; and a rotor provided at a center of the stator. The first through twelfth coils are configured such that: the twelfth, first, six, and seventh coils in series connection form a W-phase; the eighth, ninth, second, and third coils in series connection form a U-phase, the fourth, fifth, tenth, and eleventh coils in series connection form a V-phase, coils of different phases adjacent to each other in an arrangement on the teeth are wound in the same direction, and coils of the same phase adjacent to each other are wound in opposite directions.

Abstract: Stator (1) of an electric motor, in particular an electric motor for refrigerant compressors, the stator (1) comprising a coil, the coil comprising windings (3), where at least one of the windings (3) comprises two wires (4, 5) of different materials that are electrically connected in parallel, where the windings (3) are disposed at least in sections in mounting slots (2) of the stator (1).

Abstract: A rotating electric machine includes a rotor and a stator. The stator includes a stator core and a stator coil. The stator coil includes three first windings, three second windings and three switch units. The first windings are ?-connected to define three nodes therebetween. The second windings are arranged so as to be respectively connectable between the nodes and three phase terminals of the stator coil. The switch units respectively switch the connections between the nodes and the phase terminals between a direct connection state and an indirect connection state. In the direct connection state, the nodes are respectively directly connected with the phase terminals. In the indirect connection state, the nodes are respectively connected with the phase terminals via the second windings. The first and second windings are mounted on the stator core so that the first windings are located closer than the second windings to the rotor.

Abstract: Winding bodies include: a first terminal wire that extends outward at a first axial end of a stator core from a radially innermost position inside slots; and a second terminal wire that extends outward at the first axial end of the stator core from a radially outermost position inside the slots, the first terminal wires are each led radially outward over coil ends of the stator winding, the second terminal wires are each led radially outward at positions that are nearer to the stator core than end portions of the first terminal wires that are led radially outward over the coil ends of the stator winding, and end portions of intraphase connecting second terminal wires are stacked in an axial direction with, placed in contact with, and connected to end portions of intraphase connecting first terminal wires that are subject to connection therewith.

Abstract: A stator includes conductive wires wound around teeth, and slots between adjacent teeth in a circumferential direction. The conductive wires include conductive wires of three phases corresponding to a U-phase, a V-phase, and a W-phase, and the conductive wires are delta connected. Coils, in which any one of the conductive wires is wound around the teeth, are repeatedly disposed in order of the U-phase, the V-phase, and the W-phase in the circumferential direction. In each of the U-phase, the V-phase, and the W-phase, at least two coils are connected in series and adjacent in the circumferential direction. A direction in which the U-phase and W-phase conductive wires are wound around the teeth and a direction in which the V-phase conductive wire is wound around the tooth are opposite.

Abstract: A stator includes an annular stator core and a multi-phase stator coil. The stator core has slots arranged in a circumferential direction thereof. The stator coil is comprised of phase windings that are mounted on the stator core so as to be received in the slots of the stator core. The stator coil has an annular coil end part protruding axially outward from an axial end face of the stator core. The stator coil includes, at least, two lead wires and a joint. Each of the lead wires is connected with one of the phase windings of the stator coil and led out from a radially inner periphery of the coil end part. At the joint, distal ends of the lead wires are joined to each other. Adjoining portions of the lead wires, which adjoin each other, are arranged radially inside a radially-inner peripheral surface of the coil end part.

Abstract: A rotating electric machine includes a stator core, a stator winding, and a rotor rotatably disposed via an air gap so as to be allowed to rotate relative to the stator core. A magnetic resistance-altering portion is provided on every other magnetic pole of magnetically-assisted salient pole members. A magnetic pole provided with the magnetic resistance-altering portion and a magnetic pole without the magnetic resistance-altering portion are alternately arranged.

Abstract: A permanent magnet motor has a number of permanent magnets forming permanent magnet poles. Each magnet has an outer surface that is an arc surface with a convex middle. An inner surface of the magnet is a curved surface with a concave middle. The curved surface has an arc surface section and two planar surface sections. The arc surface has a pole arc angle ? of 0.7 to 0.96, and the ratio of an arc angle ? of the arc surface section to the pole arc angle ? is 0.15 to 0.35. The shape of the inner surface of the magnet creates uneven air gaps between the rotor poles and the stator core poles. This reduces cogging torque, increases the motor efficiency, and reduces the motor noise.

Abstract: An end winding support segment for a generator rotor includes a support segment body with a curved inner surface configured to be adjacent to a rotor shaft, a winding support arm extending radially outward from the support segment body, and an orifice extending from the curved inner surface of the support to an exterior surface of the support adjacent the winding support arm with the orifice configured to transfer lubricant from a surface of the rotor shaft to a winding located on the winding support arm.

Abstract: A powertrain for a vehicle includes an electric machine and a controller. The electric machine has electrically isolated windings and is coupled with an inverter. The controller may be programmed to configure respective terminals of the windings to form a Y-connection, and responsive to an electrical connection between the vehicle and a 3-phase power grid, reconfigure the respective terminals such that each is coupled to a respective phase of the 3-phase power grid.

Abstract: A method for welding a plurality of wire segment pairs is disclosed. Each wire segment pair has two adjacent wire segments, and each adjacent wire segment has a contact region where the wire segment is to be welded to the respective other wire segment. The wire segment pairs are successively guided between two elements of a pressing unit, and at a weld moment in which at least one of the wire segment pairs is located between the two elements. The pressing unit exerts a pressing force onto the wire segment pair such that the contact regions of the wire segments are pressed against each other. At each weld moment, laser radiation is irradiated onto the wire segment pair to which the pressing unit is exerting the pressing force, and the laser radiation is irradiated onto a region in which the contact regions are pressed against each other.

Abstract: An electric motor has a wound stator and an outer rotor. A core of the stator has outer and inner annular portions. Tooth portions extend radially outwardly from the outer annular portion. Connecting arms interconnect the outer and inner annular portions. The width of the connecting arms is less than the width of the tooth portions. The ratio of tooth height L1 to distance between the roots of adjacent teeth L3 is in the range of 1.0 and 1.3. The ratio of tooth width T3 to L3 is in the range of 0.8 and 1.0. The ratio of tooth length T1 to L3 is in the range of 0.5 and 0.6. The ratio of T3 to outer diameter of the stator core D is in the range of 0.07 and 0.1.

Abstract: An electric machine is provided that has a rotor assembly having a rotor core configured to support permanent magnets spaced around the rotor core to define a number of rotor poles. The rotor core has multiple rotor slots arranged as multiple barrier layers at each of the rotor poles. The multiple barrier layers are positioned adjacent one another between an inner periphery of the rotor core and an outer periphery of the rotor core and include a first barrier layer nearest the inner periphery. Permanent magnets are disposed in at least the first barrier layer. A stator assembly surrounds the rotor assembly. The electric machine is configured to function as a motor in a motoring mode and as a generator in a generating mode. The electric machine is configured with predetermined operating parameters selected for optimizing operation in the motoring mode and/or the generating mode.

Abstract: A wireless power transmitter includes a case including a base plate and a structure disposed on the base plate; and a transmitting coil having a three-dimensional spiral shape disposed on a side surface of the structure and configured to generate a magnetic field in a direction perpendicular to the side surface of the structure.

Abstract: The disclosure relates to printed circuit board motors and specifically to printed circuit boards used in motors and generators. Windings formed from copper on printed circuit boards have been used for purposes of forming antennas, inductors, transformers, and stators that can be incorporated in permanent magnet brushless DC (permanent magnet synchronous) machines. For energy conversion devices using modern permanent magnet materials and PCB stators, the magnetic field is not strongly confined by magnetically susceptible materials. Thus, the interaction between fields from adjacent turns in a winding, and/or windings on adjacent layers (for a multilayer configuration) may be significant. The structures disclosed hereinafter reduce the effective resistance in the windings, and therefore reduce the associated losses to achieve a reduced current density in portions of the rotating energy conversion devices.

Abstract: A field winding synchronous machine drive system includes a field winding synchronous machine having a stator and a rotor and a drive apparatus configured to drive the field winding synchronous machine. The stator has N m-phase stator coils wound on a stator core to create a rotating magnetic field, where N is an integer not less than 2 and m is an integer not less than 3. The rotor has at least one main field winding wound on a rotor core to create field magnetic flux. The drive apparatus includes N inverters each of which supplies m-phase alternating current to a corresponding one of the N m-phase stator coils. Specifically, each of the inverters supplies the corresponding m-phase stator coil with the m-phase alternating current which includes a fundamental-wave current and a time-harmonic current superimposed on the fundamental-wave current; the time-harmonic current has a shorter period than the fundamental-wave current.

Abstract: The present invention relates to a wound stator of an alternator, which comprises: a stator and a group of wires wound thereon. The group of wires comprises a plurality of abreast wires sequentially embedded in corresponding grooves of the stator, and the abreast wires in the grooves are oriented in a radial direction of the stator.

Abstract: A three-phase alternating-current winding is configured by connecting first conductor terminals and second conductor terminals that are disposed in a circular arc-shaped region using connecting units, electric power supplying terminals of the three-phase alternating-current winding are constituted by the first conductor terminals and the second conductor terminals that are disposed in the circular arc-shaped region, a number of parallel phase windings in the three-phase alternating-current winding is n, where n is a natural number that is greater than or equal to one, an angular range of the circular arc-shaped region is less than or equal to (180×n) electrical degrees, and the second conductor terminals that constitute the electric power supplying terminals are positioned between adjacent first conductor terminals when viewed from a radially outer side.

Abstract: The fitting of a stator (13) body (14) equipped with a winding (12) in an inner support surface (250) for a skirt (155) of a bearing (15) of a rotary electrical machine, such as an alternator or an alternator-starter of a motor vehicle, characterized in that the skirt (155) is heated locally by induction before fitting of the body (14) equipped with its winding (12) in the skirt (155). The invention also relates to a rotary electrical machine comprising a fitting of this type.

Abstract: A stator for a motor or generator including a planar composite structure (PCS) having at least one dielectric layer and a plurality of conductive layers is provided. The stator includes first conductive elements extending radially to a distance r1 from a center of, and disposed angularly on, the PCS. Each first conductive element includes a preferred termination structure to connect with at least one of a plurality of second conductive elements extending radially from a radius r2 from the center of, and disposed angularly on, the PCS.

Abstract: It is proposed a system for condition monitoring electric machine and the method thereof. The system includes a portable unit, being adapted for free movement around said electric machine; a magnetic field sensor, being adapted for measuring magnetic field intensity at at least one of a plurality points of a path of said free movement; a processing unit, being adapted for receiving at least one corresponding magnetic field intensity signal from said magnetic field sensor, comparing at least one magnetic field intensity value to at least one corresponding expected value, and determining, based on the comparison, if a fault is present in the electric machine; wherein: said magnetic field sensor and said processing unit are integrated into said portable unit.

Abstract: A planar composite structure (PCS) for use in an axial flux motor or generator may include a conductive layer disposed on a dielectric layer, with the conductive layer comprising conductive traces that form portions of at least two windings that, when energized, generate magnetic flux for at least two corresponding phases of the motor or generator. A PCS may additionally or alternatively include a first conductive layer comprising first conductive traces that form a first portion of a winding that, when energized, generates magnetic flux for a first phase of the motor or generator, and a second conductive layer, which is different than the at least one first conductive layer, comprising second conductive traces that form a second portion of the winding.

Abstract: A rotary electric machine includes a stator including a stator winding and a rotor movable relative to the stator in a first direction and arranged to face the stator in a second direction, the rotor including plural pairs of rotor poles at a rotor core, each pair of the plural pairs of rotor poles including different polarities from each other, the stator including a fractional slot configuration where the number of slots per pole per phase is a non-integer, the stator winding being wound by a fractional slot winding, one of a stator core and the rotor core including a base portion and either a single position portion or plural position portions which is connected to the base portion in a third direction and which is displaced relative to the base portion in the first direction, the third direction being orthogonal to the first direction and the second direction.

Abstract: A stator includes a cylindrical core with a plurality of longitudinally extending slots, a first winding set formed as a first cascaded wire in two radial layers of the slots, a second winding set formed as a second cascaded wire in two other radial layers of the slots, and a jumper connecting the first and second wires. A first winding set may have three cascaded phase wires in first and second layers of the slots, and a second winding set may have three cascaded phase wires in third and fourth layers of the slots. A winding set of a first phase may have a first cascaded wire in two radial layers of a first one of the slots, and a winding set of a second phase may have a second cascaded wire in two other radial layers of the first one of the slots.

Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.

Abstract: An overlapping portion of an insulating portion formed in an annular shape is held between a workbench having a linear projection and an ultrasonic horn having a circular projection with at least part of the linear projection and of the circular projection opposed to each other and ultrasonically welded. In the ultrasonic welding, even though the ultrasonic horn under ultrasonic vibration rotates on the overlapping portion of the insulating portion, the area in the overlapping portion held between the linear projection and the circular projection with at least part of the linear projection and of the circular projection opposed to each other is not reduced after ultrasonic vibration is applied to the ultrasonic horn.

Abstract: Systems and methods are directed to providing power to a transport refrigeration system (TRS) using an undersized main power source in combination with a secondary power source. The systems and methods allow the undersized main power source to be used with a TRS that requires a power more than a maximum threshold power of the undersized main power source to operate at a full cooling capacity. The secondary power supplements the undersized main power to allow the TRS to operate at the full cooling capacity. Optionally, a tertiary power source can supplement the undersized main power source, or the undersized main and secondary power sources to run the TRS.

Abstract: An electrical motor including a stator, said stator comprising a back iron, a plurality of teeth extending therefrom, and windings wound around said teeth; a rotary body comprising permanent magnets positioned between said stator and said rotary body; said rotary body being coaxially rotatable relative to the stator about a central axis; means for rotating said rotary body about said central axis of rotation relative to said stator, and wherein said back iron of said stator further comprises a first loop of electrical resistive wire extending therein.

Abstract: Systems and methods are directed to providing power to a transport refrigeration system (TRS) using an undersized main power source in combination with a secondary power source. The systems and methods allow the undersized main power source to be used with a TRS that requires a power more than a maximum threshold power of the undersized main power source to operate at a full cooling capacity. The secondary power supplements the undersized main power to allow the TRS to operate at the full cooling capacity. Optionally, a tertiary power source can supplement the undersized main power source, or the undersized main and secondary power sources to run the TRS.

Abstract: A thyristor starting device includes: a converter which converts AC power supplied from an AC power source into DC power; a DC reactor which smooths a DC current; an inverter which converts the DC power provided from the converter into AC power, and supplies the AC power to a synchronous machine; a gate pulse generation circuit which generates a gate pulse to be provided to thyristors of the converter and the inverter; a control unit which sets a phase control angle of the gate pulse to be provided to the thyristors of the converter, by controlling a current of the converter such that the DC current flowing into the DC reactor matches a current command value; and an abnormality detection unit which compares a detection value of the DC current with the current command value, and determines an abnormality in the gate pulse based on a comparison result.

Abstract: Small coil groups are each configured by connecting a plurality of winding bodies in series by passing crossover portions that are formed by bending first conductor terminals radially outward axially outside a coil end and joining the crossover portions to second conductor terminals that are subject to joining, the first conductor terminals that constitute first ends of the small coil group are disposed so as to be spaced apart from each other circumferentially around a radially inner side of a circular arc-shaped region that extends circumferentially around the coil end, the second conductor terminals that constitute second ends of the small coil group are arranged so as to be spaced apart from each other circumferentially around a radially outer side of the circular arc-shaped region of the coil end, and a stator winding is produced by connecting the small coil groups within the circular arc-shaped region.

Abstract: A rotating electric machine, in which a cross conductors of a stator connect slot conductors so as to stride N+1 slots at coil ends on one side and stride N?1 slots at coil ends on another side, with N representing a number of slots per pole, a stator winding includes a plurality of slot conductor groups each made up with a plurality of slot conductors corresponding to a single phase, the plurality of slot conductors in each slot conductor group are inserted at a predetermined number Ns of successive slots forming a continuous range along a circumference of the stator core so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions, Ns=NSPP+NL when NSPP represents a number of slots per pole per phase and a number of layers is expressed as 2×NL.

Abstract: An electrical induction motor may include a stator with a plurality of circumferentially spaced slots, and N windings installed in the slots and each configured to be connected between two current inputs from an inverter, with a phase angle difference between the two current inputs equal to H×180°/N, wherein H=a harmonic of a current drive waveform supplied by the inverter to the windings. Each of the N windings may be installed in the plurality of slots to form a top layer of winding and a bottom layer of winding, with a phase angle of the current flowing through the top layer of winding in each slot being aligned with a phase angle of current flowing through the bottom layer of winding at a first, higher harmonic, and out of alignment at a second, lower harmonic.

Abstract: The present invention relates to a wound stator. The wound stator comprises: a stator and a plurality of wires. The stator comprises: an annular body and a plurality of radial grooves defined therein. The annular body has a plurality of separating posts protruding inwardly and radially from an inner circumference of the annular body. An end of each of the separating posts extends from its two sides to form a plurality of magnetic shoes. The plurality of radial grooves is defined between the separating posts. Each of the grooves has an opening defined between adjacent two of the plurality of magnetic shoes. The plurality of wires comprises: a first end, a second end, and a plurality of wave-shaped coils located between the first end and second end. Each wave-shaped coil is formed of straight portions and curved portions that alternate with each other.

Abstract: The present disclosure is directed to an electric generator and motor transmission system that is capable of operating with high energy, wide operating range and extremely variable torque and RPM conditions. In accordance with various embodiments, the disclosed system is operable to: dynamically change the output “size” of the motor/generator by modularly engaging and disengaging rotor/stator sets as power demands increase or decrease; activate one stator or another within the rotor/stator sets as torque/RPM or amperage/voltage requirements change; and/or change from parallel to series winding configurations or the reverse through sets of 2, 4, 6 or more parallel, three-phase, non-twisted coil windings with switchable separated center tap to efficiently meet torque/RPM or amperage/voltage requirements.

Abstract: The present invention relates to a plurality windings of U phase corresponding to one magnetic pole including first and second windings wound in a short pitch winding manner. The winding starts of the first and second windings are shifted by at least one tooth. The windings are wound so that a winding angle occupied by the windings inter-slot angle from the winding start of the first winding to the winding end of the second winding corresponds to a pole angle. The windings in the V phase are disposed in the same relationship as in the U phase at the position delayed by an electric angle of 120 degrees with respect to the U phase, and those in the W phase are disposed at the position delayed by an additional 120 degrees. The outputs of the windings are then each rectified, subsequently joined together and used by adding currents.

Abstract: An engine component cooling system and apparatus, at least one fan and a cover are installed upon the engine component. The fan pulls cool air and force cool air through the component assembly to reduce the heat generated through operation, thereby optimizing operation and extending the useful life of the individual components and the assembly. In one example, a fan and a cover are installed on an alternator assembly so that the fan draws in and forces cool air through the rectifier, rotor, stator, and out through the front of the assembly. The cover prevents cool air from being lost and misdirected, while directing the cool air through the assembly.

Abstract: A motor including a stator assembly and a rotor assembly. The stator assembly includes a stator core and a winding; the stator core includes a yoke and a plurality of teeth protruding inwards from the yoke; between two adjacent teeth formed is a winding slot; the winding is arranged in the winding slot, and winded on the teeth. The rotor assembly includes a rotor core and a permanent magnet. The rotor core includes an annular ring having a central axial bore and a plurality of magnetic induction blocks protruding outwards from an outer side of the annular ring. Between two adjacent magnetic induction blocks formed is a radial recess for mounting the permanent magnet. The magnetic induction blocks at both sides of an opening of the radial recess protrude with a hook block. The thickness of the rotor core is larger than that of the stator core.

Abstract: Four layers of first coil rows formed by arranging first coil ends at a pitch of one slot in a circumferential direction are arranged in a radial direction to configure a first coil end group, three layers of second coil rows formed by arranging second coil ends at a pitch of one slot in a circumferential direction are arranged in a radial direction to configure a first coil end group, a cylindrical first insulating paper is housed inside the first coil end rows and inside the second coil end rows, and a cylindrical second insulating paper is housed between the first coil end rows and between the second coil end rows.

Abstract: A rotating electrical machine includes: a stator core; a stator winding; and a rotor. Cross conductors connect slot conductors to run astride slots with the slot pitch N+1 at coil ends on one side and run astride slots with the slot pitch N?1 at coil ends on another side, with N representing a number of slots per pole; the stator winding includes slot conductor groups each having a plurality of slot conductors; the plurality of slot conductors in each slot conductor group are inserted at a predetermined number NS of successive slots so that the slot conductors in the slot conductor group take successive slot positions and successive layer positions; and the number NS is set so that NS=NSPP+NL when NSPP represents a number of slots per phase per pole and a number of layers is expressed as 2×NL.

Abstract: The present invention provides a generator comprising winding arrangements, each winding arrangement comprising at least an inner coil and an outer coil constituting a concentric structure of coils. The inner coil is constituted by an inner conductor and the outer coil is constituted by an outer conductor, the inner and outer conductors being connected in series. The inner conductor, which is wound around a tooth, has a smaller electrical resistance per unit length than the outer conductor.

Abstract: Approaches presented herein enable an alternative energy generator to generate electricity and scaled voltage by placing stationary rare earth magnets on a rotating plate in such a manner that an electric current is produced when the magnets on the plate are moved and the magnet flux lines cut across a stationary metal coil. More specifically, one or more stationary metal coils are positioned near a rotating plate on which a set of magnets are places, the metal coils oriented to be crossed by magnetic flux lines of the magnets. Alternatively, a set of magnets or metal coils are place on a rotating plate with one or more stationary magnets oriented near to yield crossed magnetic flux lines. The rotating plate may be driven by a motor, a hand crank, or any human motion with a set of gears to facilitate rotational torque.

Abstract: Apparatus and methods are provided for the measurement of power consumption at points of interest, such as circuit breakers, machines, and the like. Accordingly, means are provided for measurement of power consumption for each electrical sub-network that is controlled by a circuit breaker. Each apparatus is enabled to communicate its respective data, in an environment of a plurality of such apparatuses, to a management unit which is enabled to provide finer granularity power consumption profiles. Challenges of measuring relatively low supply currents, wireless operation in an environment of a large number of apparatuses, and self-powering are addressed.

Abstract: Apparatus and methods are provided for electrical parameter measurements at points of interest, such as circuit breakers, machines, and the like. The devices which comprise of components that may require corrections, such as the errors induced by, but not limited to, the use of a split core mounted around a current carrier, and hence calibration coefficients are provided based on test, measurements and/or calculations respective of the devices. These coefficients may be stored in a database for retrieval when calibration of measurements received from a measuring device. In one embodiment at least one of the calibration coefficients is stored on the measuring device.

Abstract: Apparatus and methods are provided for the measurement of power consumption at points of interest, such as circuit breakers, machines, and the like. Accordingly, means are provided for measurement of power consumption for each electrical sub-network that is controlled by a circuit breaker. Each apparatus is enabled to communicate its respective data, in an environment of a plurality of such apparatuses, to a management unit which is enabled to provide finer granularity power consumption profiles. Challenges of measuring relatively low supply currents, wireless operation in an environment of a large number of apparatuses, and self-powering are addressed.

Abstract: An electrical induction motor includes a plurality of windings, and a plurality of contactors. Each of the plurality of contactors is configured to be selectively opened or closed in a circuit including the plurality of windings to selectively connect the windings together in a star configuration wherein current flowing through the windings results in the generation of 2N magnetic poles, with N equal to the number of phases of the motor. Each of the plurality of contactors is also configured to be selectively opened or closed in the circuit including the plurality of windings to selectively connect the windings together in a mesh configuration wherein current flowing through the windings results in the generation of two magnetic poles.