Abstract: A contactless power transmission device transmits power to a power reception device in a contactless manner, and includes a shield case which has an opening portion at one end portion thereof, and into which the power reception device can be inserted through the opening portion; a power transmission circuit which is for transmitting power and is disposed to correspond to the shield case; a power transmission coil which is disposed on the inner side in the shield case when viewed from the opening portion, and transmits AC power from the power transmission circuit to the power reception device; and a notch which is formed on side surfaces of the shield case, from the opening portion toward the inner side such that both sides of a rear end portion of the power reception device inserted into the shield case can be held.

Abstract: A contactless power transmission device transmits power to a power reception device in a contactless manner, and includes a shield case which has an opening portion at one end portion thereof, and is partitioned into a plurality of shield rooms by partitioning plates; a power transmission circuit which is for transmitting power and is disposed to correspond to each of the plurality of shield rooms; a plurality of power transmission coils which are disposed on the inner side in the plurality of shield rooms and transmit AC power from the power transmission circuit to the power reception device; and a notch which is formed on side surfaces of the shield case or the partitioning plates, from the opening portion toward the inner side such that both sides of a rear end portion of the power reception device inserted into the plurality of shield rooms can be held.

Abstract: An electrical power unit is positionable at a work surface and includes an upper housing including an upper surface and a lower surface spaced below the upper surface to define an upper housing chamber. A wireless power transmitter is disposed in the upper housing chamber and is operable to convey electrical energy to a wireless power receiver positioned at or above the upper surface. A base is coupled to the upper housing and extends downwardly therefrom, the base being configured for insertion into an opening formed in the work surface or into a space defined between two adjacent work surfaces. The base is further configured to facilitate securing the electrical power unit to the work surface or the adjacent work surfaces.

Abstract: A method and power transmitter for efficiently controlling power transmission to one or more power receivers in a wireless multi-power transmission system are provided. The method includes performing, when a predetermined measurement cycle arrives, a load measurement; comparing a current load measurement value with a previous load measurement value; determining whether the current load measurement value is increased over the previous load measurement value by at least as much as a first predetermined threshold; gradually increasing, when the load measurement value is increased over the previous load measurement value by at least as much as the first threshold, a transmission power value until a request for a subscription to a wireless multi-power transmission network from a power reception target within a predetermined time limit; and stopping, when the request for the subscription is not received before the time limit is exceeded, power transmission to the power reception target.

Abstract: A wireless power transmission system is provided, which includes a power supplying device and a power receiving device. The power supplying device electrically connects to an outside supply terminal and has a wireless transmission module. The power receiving device has a wireless receiving module. Wherein, the power supplying device connects to the wireless receiving module via the wireless transmission module and transmits a power from the outside supply terminal to the power receiving device, after the power supplying device detects the wireless receiving module via the wireless transmission module. Alternatively, after the power receiving device detects the wireless transmission module via the wireless receiving module, the power receiving device connects to the wireless transmission module via the wireless receiving module so as to receive the power transmitted by the power supplying device.

Abstract: An object detection system 200 for an inductive power transmitter and comprising: an excitation coil 202; a detection coil 204; the system arranged to determine a measure of complex impedance at the detection coil 204 in response to application of an excitation current to the excitation coil 202; the system further arranged to detect the presence of an object and a type of the object using the measure of complex impedance.

Abstract: A motor includes: a stator that includes a teeth iron core and a yoke iron core; a rotor housed in the stator; an output-side flange; a projection disposed at the yoke iron core, the projection projecting on an output side of the motor with respect to an end surface of the teeth iron core; and a concave portion disposed at the output-side flange, the concave portion at which the projection is disposed, the concave portion contacting an inner peripheral surface of the projection.

Abstract: The invention relates to a rotor for a rotating electrical machine, comprising: a central shaft, an annular core coaxial to the shaft, a winding extending radially around the core, a first claw-pole and a second claw-pole arranged axially on each side of the core and the winding. Each claw-pole of the rotor comprises a plurality of triangular teeth having a base that is tangent to the pole wheel and comprising a first side, denoted a, and a second side, denoted b. The ratio of 1-a/b is between 0 and 0.5, or 0 and ?0.5. The tip of the teeth of one of the claw-poles is equidistant between the ends of the bases adjacent to the tip of the teeth of the other claw-pole.

Abstract: A rotor assembly is provided for a motor of a laundry appliance. The rotor assembly includes a rotor frame having a hub region that extends radially outward from a central hub, and a cylindrical rim extending axially from the hub region. The rotor assembly further includes a yoke disposed at an inner surface of the cylindrical rim, and a plurality of magnets disposed at an inner surface of the yoke, wherein the yoke comprises a helically wound metal strip.

Abstract: Certain aspects relate to designs for an interior permanent magnet (IPM) electrical machine rotor and magnets having a double layer split interior magnet configuration. Compared to existing designs, the disclosed rotor design has an increased amount of magnet material, more elongated and thinner slots, a wider angle for the “nested-v” configuration, and wider branches between layers of magnets, resulting in an improved power density.

Abstract: This interior magnet rotary electric machine (1) is provided with a rotor (2) that has a rotor core (11) having two sets of permanent magnets (12, 13) embedded therein, and with a stator (3) that is disposed facing the rotor (2). The two sets of permanent magnets (12, 13) each comprise a pair of magnets (12a, 12b, 13a, 13b) of like polarity disposed adjacently along the circumferential direction of the rotor 2. In the rotor core (11), magnet embedding holes (11b), which accommodate the magnets (12a, 12b, 13a, 13b) of like polarity, are formed for each of the magnets of like polarity. The thickness (a), in the rotor (2) circumferential direction, of the portions (18) of the rotor core (11) between like poles is less than the thickness (b) of the portions (19) of the rotor core (11) between unlike poles.

Abstract: Provided is a rotor group for electromechanical components including a substantially cylindrical, magnetic element, defining a main axis, two bases and a side surface, and including a through hole substantially centred on the main axis, defining inner walls and including at least one groove, for the rotational constraint around the main axis of a transmission element with respect to the magnetic element, on the inner walls, and the transmission element including polymeric material, mainly arranged inside the through hole, including coupling tabs, in contact with the inner walls of the through hole, configured for the rotational constraint around the main axis of the transmission element with respect to the magnetic element and including coupling tabs presenting folded free ends in situ, in contact with at least one of the bases, adapted to constrain the translation along the main axis of the transmission element with respect to the magnetic element.

Abstract: A rotor includes a rotary shaft having a non-magnetic body, a plurality of rotor cores, and a plurality of permanent magnets disposed between the plurality of rotor cores, wherein a concave section extending in an axial direction is formed in any one of the non-magnetic body and a base end of the rotor core, and a convex section fitted into the concave section is formed at the other, the concave section is formed by a key groove section and a dovetail groove section in communication with each other, the convex section is formed by a key section configured to fit into the key groove section and a dovetail protrusion configured to fit into the dovetail groove section, the key section and the dovetail protrusion being integrally formed with each other, and a gap is formed between the dovetail groove section and the dovetail protrusion in the circumferential direction.

Abstract: A rotor for a motor is provided with: a stacked core made of a plurality of steel plates stacked on top of each other in a direction of an axis of a rotating shaft, has a circular pillar shape centered around the axis, and is provided with a plurality of magnet insertion grooves arranged in a circumferential direction of the rotor and penetrating through the circular pillar shape in the direction of the axis; permanent magnets respectively inserted into the magnet insertion grooves; a pair of end plates respectively stacked on opposite ends of the stacked core in the direction of the axis and closing the magnet insertion grooves; and a pressing portion restraining the permanent magnet in the direction of the axis by pressing the permanent magnet in the direction of the axis.

Abstract: Rotor (1) for an electric machine, comprising an outer shell (5) for receiving magnets, and a three-dimensional lattice structure (7) arranged within the outer shell (5).

Abstract: A wobble plate motor includes a wobble plate and a stator. The wobble plate is made of magnetically susceptible material and has a wobble axis. The stator includes a permanent magnet and a set of electromagnetic coils and has a stator axis. The wobble plate is configured to nutate around the stator with the wobble axis precessing around the stator axis. The wobble plate has a mobile point of closest approach with respect to the stator. The mobile point of closest approach moves around the stator axis as the wobble plate nutates. The permanent magnet and the set of electromagnetic coils are configured to create a magnetic field having a flux density between the stator and the wobble plate with a highest flux density at a mobile location ahead of the mobile point of closest approach in an angular direction around the stator axis as the wobble plate nutates.

Abstract: A stator for an electrical machine having a stator body which has radial stator teeth with windings. At least some of the windings are interconnected to form a circuit strand. At least two part-motors within the stator contain in each case a part of the circuit strand.

Abstract: An electric power tool is configured to drive a tool bit. The electric power tool includes a motor that includes a stator and a rotor. The stator includes a cylindrical stator core that includes an inner peripheral side with a slot, a first insulator and a second insulator installed on respective both end surfaces of the stator core, and a coil wound around the slot of the stator core via the first insulator and the second insulator. The rotor is rotatable with respect to the stator. The rotor includes a rotor core and a rotation shaft. The first insulator overlaps with the second insulator in the slot in an axial direction of the stator core.

Abstract: A stator includes a stator core and an insulator installed on an axial-direction end surface of the stator core. The stator core has a cylindrical part, a plurality of teeth, and a plurality of windings. The windings are wound around the teeth. Each winding has a first end and a second end. The insulator has a plurality winding grooves to support the second ends. Each winding groove has a first space and a second space. The first space includes an opening. The second space includes a tip part to catch the second end, and communicate with the first space via a bent part.

Abstract: An electric motor includes a stator around which an aluminum wire having a resin coating layer formed on a surface of the aluminum wire is wound; and a rotator arranged on an inner side of the stator to be rotatable, the aluminum wire comprising a terminal wire including an aluminum exposed portion, from which the resin coating layer is peeled off to expose an aluminum core wire, the stator comprising a terminal with which the aluminum exposed portion and a power supply wire for use in supplying electric power for rotating the rotator are connected, the terminal electrically conducting the aluminum exposed portion and the power supply wire, and a first solder layer formed on the terminal, covering an entire surface of the aluminum exposed portion, and joining the aluminum exposed portion and the terminal to each other.

Abstract: A low profile pump motor lead protector with a head guard and a trailing guard, the head guard including a front section with a front end and a rear section with a rear end, the trailing guard having a pin end for insertion in a head guard socket, the lead protector for protecting a motor lead of a pump and motor assembly of a downhole production string for surfacing fluid from a reservoir such as a subterranean oil well.

Abstract: An electromagnetic actuator including: an outer tubular member and an inner axial member connected by an elastic member; a coil member attached to the outer tubular member generating electromagnetic force through energization thereto; a magnet member attached to the inner axial member and subjected to the electromagnetic force to exert axial driving force between the inner axial member and the outer tubular member; a first support section provided at the outer tubular member to axially clamp and securely support the coil member; a synthetic resin annular member housed within the outer tubular member including a power feed terminal to the coil member; and a second support section provided at the outer tubular member to axially clamp and securely support the annular member in such a parallel structure that clamping force by the first support section is not exerted on the second support section.

Abstract: A number of flywheel units are arranged in a geometric pattern. Each of the flywheel units is enclosed in a containment unit. The containment unit includes a cylindrical tube, a cover, a bottom support, resting on the ground, on which the containment unit is mounted, and a fill medium surrounding each containment unit. The containment unit may also include a horizontal plate, mounted to the base of tube, which extends outward or radially from the base of tube a pre-determined length. In this case, the fill medium rests directly on top of the portion of the plate that extends outward from tube.

Abstract: The geared motor and pointer device are provided with a stopper mechanism which restricts the range of movement of the trailing-side gear when the trailing-side gear rotates in a counter-clockwise direction. In the stopper mechanism, the part to be touched by the stopper comprises a support-side protrusion which protrudes towards the center of rotation of the trailing-side gear, and the width dimension in the peripheral direction of the support-side protrusion is smaller on the inside in the radial direction than on the outside in the radial direction. As a consequence, even if the width in the peripheral direction of the support-side protrusion is increased to a certain extent in order to ensure strength, when the stopper mechanism is activated, the stopper touching part and the part to be touched by the stopper come into contact at a position close to the center of rotation of the trailing-side gear.

Abstract: This rotary drive apparatus includes a stationary portion including a stator; and a rotating portion supported through a bearing portion to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, the rotating portion including a magnet arranged opposite to the stator. The bearing portion includes an upper bearing portion, and a lower bearing portion arranged below the upper bearing portion. A center of gravity of the rotating portion is located below an upper end of the upper bearing portion and above a lower end of the lower bearing portion.

Abstract: A vehicle rotating electrical machine has a rotor, a stator, a cooling fan provided in an axial direction end portion of the rotor and rotated integrally with the rotor, a housing, having an air intake provided opposing the cooling fan in an axial direction end portion, an annular rib provided adjacent to the air intake, and a discharge port provided across the annular rib, that houses the rotor and the stator and rotatably supports a rotary shaft, and a stay provided on a radial direction outer periphery of the housing, wherein the annular rib has an inner diameter side inclined cylindrical face, which inclines so that a diameter thereof becomes gradually smaller toward an inner side of the housing from an axial direction outer side end face of the air intake, and a sealing portion is provided between the stay and the annular rib.

Abstract: A controller integrated rotating electrical machine is designed to minimize adverse thermal effects on a control device. The controller device includes switching modules, a control circuit, and a casing. The switching modules are disposed inside the casing at a distance from a rear housing. The control circuit is disposed in the casing and located in front of the switching modules at a distance from the rear housing and the switching modules. In other words, the control circuit is arranged away from the switching modules which are a heat source when operating, thereby eliminating adverse thermal effects on the control circuit.

Abstract: The present disclosure relates to an axial flux motor for a reaction wheel, and method of using and making the same. The motor includes a stator and a rotor. The stator comprises a printed circuit board (PCB) including a first motor coil. The rotor is coupled to a first ring-shaped magnet having an alternating pole arrangement. In a further embodiment, the rotor includes permanent magnets, and the stator PCB includes a first motor coil, and a first high thermal conductivity element.

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: A switching device for switching an electric motor, where the switching device is arranged on a component which is driven in rotation by the motor. The switching device is characterized in that a contactless, absolute position-measuring device, an evaluation unit for evaluating position signals and an output unit for outputting switching information for indirectly switching and/or directly switching the motor current as a function of a position signal are provided within a single housing.

Abstract: A linear actuator comprising a first assembly, a second assembly, and a magnetic sensor. The second assembly is linearly movable with respect to the first assembly such that the linear actuator is configured so as to be in one of a plurality of linear positions. The first assembly and the second assembly cooperatively define a magnetic pathway. The magnetic pathway is configured to vary in length with linear movement of the first assembly with respect to the second assembly. The magnetic sensor is configured to output a signal indicative of the magnetic field flux routed via the magnetic pathway.

Abstract: A rotating electric machine integrated with a controller includes a rotating electric machine provided with a stator having three phase stator windings, a power converter configuring the control circuit of the rotating electric machine, a control board equipped with electronic components, and a plurality of modules provided with a plurality of switching elements controlled by the control circuit. At least one of the modules is provided with the switching elements controlling the two different sets of stator windings, and a detection element detecting a state of the module.

Abstract: The invention relates to a synchronous permanent-magnet motor preferably used in fluid driving pumps and in particular circulators for heating and/or cooling plants, of the type comprising: a stator or stator stack housed in a circulator body; a permanent-magnet rotor; an electronic control board of the circulator, installed in a casing associated with the circulator body. Advantageously a direct internal electrical connection is provided between the stator stack 11 and the electronic board so as to form a functional earthing connection terminal. This connection is obtained by means of a terminal having one end fixed to the metal structure of the stator stack and the other end connected to said electronic board.

Abstract: A driving apparatus having an electric motor configured to rotate a rotating shaft (27) by a supplied current, the driving apparatus comprising: a control board (49) which is positioned relative to the electric motor, and on which electronic components for controlling the electric motor is mounted; a plurality of first terminals (58, 59, 60) which are mounted on the control board (49), the first terminals (58, 59, 60) carrying a current; a plurality of second terminals (44, 45, 46) connected to the respective first terminals (58, 59, 60), the second terminals (44, 45, 46) carrying a current, the second terminals (44, 45, 46) being disposed outside the rotating shaft (27) in a radial direction of the rotating shaft (27) and arranged along a circumferential direction of the rotating shaft (27).

Abstract: Certain aspects relate to a continuous winding formed from a conductor of rectangular cross-section, the winding having a compound bend in the crowns connecting successive linear segments where the compound bend does not stress the conductor insulation to its failure point. The compound bend can be formed by applying force to the conductor in a first direction, thereby shaping a first bend in the conductor to form a u-shaped conductor having a crown and two linear segments, where the crown includes a v-shaped bend and two straight segments on either side of the v-shaped bend that each connect to one of the linear segments. A second bend can be formed by applying force to the conductor in a second direction perpendicular to the first direction. The shape of the second bend can depend on the desired radius of the winding when circularly wound and positioned in a stator.

Abstract: The process utilizes a shaft (2) supporting the stator (1) and/or the rotor, respectively, and capable of rotating around its axis, a first (3) and a second (3?) working station allocated on an opposite position on the sides of the stator and/or the rotor, respectively, next to the outlet area of the lateral mouth of a cavity. Said stations have carrying devices (4, 4?) for the leading wire (f), clamps (5, 5?) capable of grasping and moving the tip of the wire (f), and sensors (6, 6?) for detecting the arrival of the extremity of the wire (f).

Abstract: A fan motor for an air conditioner includes a rotor shaft, a plurality of rotor cores arranged in a circumferential direction about a center of the rotor shaft, a bridge configured to couple the rotor cores, permanent magnets coupled to the plurality of rotor cores, and an insert-injected rotor body provided in a space formed through the rotor shaft, the rotor cores, the bridge, and the permanent magnets. A cable holder for the fan motor includes an upper cable holder in which a plurality of protrusion walls are formed downwardly, a lower cable holder in which a plurality of guide walls coupled between the plurality of protrusion walls are formed upwardly, and a soldering land which is formed in a lower portion of the lower cable holder and upon which a wire can be soldered.

Abstract: Disclosed is a linear vibration motor comprising a movable element that is equipped with a magnet and weights; a coil for applying a driving force on the magnet through the application of an electric current; a frame, wherein the coil is secured; a shaft, borne on or secured by the frame, for supporting the movable element so as to be able to vibrate along the axial direction; and coil springs, disposed between the movable element and the frame, for elastically supporting the vibration of the movable element along the axial direction, on both sides of the movable element in the direction of vibration, wherein the directions of winding of the coil springs are set so as to prevent rotational vibration, around the shaft, of the movable element that is vibrating reciprocatingly along the axial direction.

Abstract: Displacement devices comprise a stator and a moveable stage. The stator comprises a plurality of coils shaped to provide pluralities of generally linearly elongated coil traces in one or more layers. Layers of coils may overlap in the Z-direction. The moveable stage comprises a plurality of magnet arrays. Each magnet array may comprise a plurality of magnetization segments generally linearly elongated in a corresponding direction. Each magnetization segment has a magnetization direction generally orthogonal to the direction in which it is elongated and at least two of the magnetization directions are different from one another. One or more amplifiers may be connected to selectively drive current in the coil traces and to thereby effect relative movement between the stator and the moveable stage.

Abstract: A linear actuator includes, a first tube provided with a plurality of coils placed thereinside, the plurality of coils being held by a tubular yoke; a rod movable in an axial direction inside the yoke; a plurality of permanent magnets held by the rod while being lined up in the axial direction, the plurality of permanent magnets opposing the plurality of coils; and wires connected to the plurality of coils and drawn to the outside of the linear actuator via an opening provided in the first tube; and a guard member provided in the first tube so as to be interposed between the wires and the rod.

Abstract: A prismatic actuator for imparting a hopping motion to a supported load such as a leg of robot. The apparatus includes a direct drive motor, such as a voice coil, operable to provide translational motion. The apparatus includes a spring element and a prismatic guide assembly. The guide assembly is configured to support the direct drive motor to constrain the translational motion to be along a drive axis and support the spring element to constrain compression and expansion of the spring element along a longitudinal axis parallel to the drive axis. The apparatus includes a controller that: (1) first controls the direct drive motor to compress the spring element during a first time period beginning when the apparatus initially contacts a surface; and (2) second controls the direct drive motor to expand the spring element when the apparatus has zero velocity while contacting the surface.

Abstract: A new combination of existing technologies that turns an Alternator, in order to generate electricity, where the Alternator of the present day is designed with the same design principles as the 1896 Tesla Generator. In addition, due to a new combination of existing technologies, electricity is generated utilizing the Tesla Generator, without pollution causing gasoline or diesel engines, nor connection to the electric grid, and, without the need for wind-power nor hydro-power. Thus, electricity is generated when needed, anytime, anywhere, without the need for an internal combustion engine, nor forces of nature such as wind & water.

Abstract: A device for transmitting rotational motions without contact may include an inner rotor with at least one inner-rotor magnet and an outer rotor with at least one outer-rotor magnet. The inner rotor and the outer rotor are magnetically coupled to one another and rotatable along a rotation direction about a common axis of rotation. The at least one inner-rotor magnet and/or the at least one outer-rotor magnet may have a magnetization that is at least one of diametric, radial, and lateral. The at least one inner-rotor magnet may have a different type of magnetization than the at least one outer-rotor magnet.

Abstract: A submodule distributed control method, device and system are provided. Submodules of each bridge arm are grouped. Each group corresponds to one valve based controller. An upper-level control device calculates a weight of each group according to a bridge arm current, an average voltage of normal submodules in each group, and the number of the normal submodules in each group; calculates, according to the number of submodules to be input in a corresponding bridge arm, the number of submodules being input in each group and delivers the number to the valve based controller. The valve based controller operates according to a voltage balancing policy and a gating method that are provided in the prior art.

Abstract: Power-packet-switching circuits (and methods and systems) in which at least one port uses series-connected combinations of bidirectional switches to connect a link inductor (or transformer), with selectable polarity, to an outside line. Optionally, series-connected combinations of bidirectional switches are used for phase legs in some ports, while single bidirectional switches are used for the phase legs in other ports. This can be particularly advantageous where the converter interfaces between lines at significantly different operating voltages. By using B-TRANs as the series-combined elements of the combinations of switches, voltage-dividing circuitry is not needed to equalize the voltages seen by the individual devices in each combination.

Abstract: A hybrid topology power converter includes a three-level circuit module and a cascaded H-bridge circuit module. A control method includes the following steps. Firstly, a zero sequence component is injected into a total modulation wave, thereby generating a compensated total modulation wave. Then, a first voltage signal is generated according to the compensated total modulation wave. An H-bridge modulation wave is generated according to the compensated total modulation wave and the first voltage signal. A three-level driving signal is generated according to the first voltage signal, and an H-bridge driving signal is generated according to the H-bridge modulation wave. A duty cycle of at least one switch element of the three-level circuit module is adjusted according to the three-level driving signal. A duty cycle of at least one switch elements of the cascaded H-bridge circuit module is adjusted according to the H-bridge driving signal.

Abstract: A control circuit for a switch mode power supply (SMPS) includes a power switch for coupling to a primary winding of the power supply and a startup resistor coupled to an external input voltage and to a control terminal of the power switch. The control circuit also includes a controller. During startup, the controller is configured to cause the power switch to amplify a startup current from an external input voltage through the startup resistor and provide a startup power to the controller. During normal operation, the controller is configured to provide a power switch control signal to turn on and off the power switch for controlling a current flow in the primary winding and regulating an output of the power supply. The controller is configured to provide a current signal for driving an NPN power switch and to provide a voltage signal for driving an NMOS power switch.

Abstract: A power supply circuit includes: an anti-electromagnetic interference circuit configured to receive input alternating current power and to output filtered alternating current power; a rectifier circuit configured to rectify the filtered alternating current power; a current correction circuit configured to perform passive power factor correction on the rectified alternating current power; a single-ended flyback converter circuit coupled to the output of the current correction circuit; and a dimming control circuit coupled between the output of the single-ended flyback converter circuit and a light load, wherein the current correction circuit is configured to control a waveform of the rectified alternating current power to follow a current output to the light load in order to provide passive power factor correction.

Abstract: A boost chopper circuit is described that an alternating current (AC) power source; at least one inductor connected to said AC power source; a rectifier connected to said inductor and AC power source; at least one switch shorting our said rectifier; a series circuit connected in parallel with said switch of at least one diode and a capacitor; and a load connected in parallel with said capacitor. A control technique is employed that includes turning on and off the switch in order to keep the average current per pulse cycle proportional to the AC input voltage during the same pulse cycle.

Abstract: A combination of inductor current thresholds and circuitry for controlling the inductor based on the thresholds may be implemented in a power converter. One or more of the inductor current thresholds may be variable. An inductor current threshold may be varied as part of a search algorithm for identifying a value resulting in full scale operation of the inductor without exceeding a safe limit. After each cycle of the power converter, circuitry may determine which current thresholds have been exceeded and which have not been exceeded and then generate indication signals for each of the thresholds. Control logic may receive the indication signals and adjust one of the inductor current thresholds used to determine timing for disconnecting and reconnecting current through the inductor of the power converter.