Abstract: A charging apparatus 10 includes: a half-wave rectifier 21 that half-wave rectifies an alternating current supplied from a commercial power supply 11; a radiofrequency generating circuit 22 that converts the output current of the half-wave rectifier 21 to a radiofrequency current with a predetermined frequency and outputs the radiofrequency current; an induction coil 23 that is fed with the radiofrequency current from the radiofrequency generating circuit 22; a power receiving coil 24 that receives an electromotive force induced by a magnetic flux produced on the induction coil 23; a resonant capacitor 25 that is connected in parallel with the power receiving coil 24 and forms a resonant circuit with the power receiving coil 24 at the predetermined frequency; and a full-wave rectifier 27 that full-wave rectifies the output current of the parallel resonant circuit and supplies the current to a lead storage battery 12.

Abstract: In order to provide contactless power-feed equipment that can avoid excessive energy consumption upon switching, a primary side includes a DC power-supply device 11, a power-feed device 12, and a power-feed unit 13 and a secondary side includes a power-receiving unit 15. The power-feed device 12 includes: an insulating transformer 24 including a primary coil 22 with a center tap 22a fed with a DC current and a secondary coil 23 connected to the power-feed unit 13; a resonance capacitor 25 connected in parallel with the secondary coil 23 of the insulating transformer 24; a first diode 26 and a first Zener diode 29 that are connected to one end 22b of the primary coil 22; a second diode 27 and a second Zener diode 32 that are connected to the other end 22c of the primary coil 22; a first transistor 35 connected to the first diode 26, and a second transistor 36 connected to the second diode 27.

Abstract: A charging apparatus 10 includes: a half-wave rectifier 21 that half-wave rectifies an alternating current supplied from a commercial power supply 11; a radiofrequency generating circuit 22 that converts the output current of the half-wave rectifier 21 to a radiofrequency current with a predetermined frequency and outputs the radiofrequency current; an induction coil 23 that is fed with the radiofrequency current from the radiofrequency generating circuit 22; a power receiving coil 24 that receives an electromotive force induced by a magnetic flux produced on the induction coil 23; a resonant capacitor 25 that is connected in parallel with the power receiving coil 24 and forms a resonant circuit with the power receiving coil 24 at the predetermined frequency; and a full-wave rectifier 27 that full-wave rectifies the output current of the parallel resonant circuit and supplies the current to a lead storage battery 12.

Abstract: In order to provide contactless power-feed equipment that can avoid excessive energy consumption upon switching, a primary side includes a DC power-supply device 11, a power-feed device 12, and a power-feed unit 13 and a secondary side includes a power-receiving unit 15. The power-feed device 12 includes: an insulating transformer 24 including a primary coil 22 with a center tap 22a fed with a DC current and a secondary coil 23 connected to the power-feed unit 13; a resonance capacitor 25 connected in parallel with the secondary coil 23 of the insulating transformer 24; a first diode 26 and a first Zener diode 29 that are connected to one end 22b of the primary coil 22; a second diode 27 and a second Zener diode 32 that are connected to the other end 22c of the primary coil 22; a first transistor 35 connected to the first diode 26, and a second transistor 36 connected to the second diode 27.

Abstract: A plurality of pickup coils 2A and 2B are provided, resonance capacitors 3A and 3B forming resonance circuits 4A and 4B resonating at the frequency of an inductive path 1 are respectively connected in series with the pickup coils 2A and 2B, and the resonance circuits 4A and 4B are connected in series. Further, the resonance circuits 4A and 4B are respectively provided with rectifier circuits 6A and 6B for rectifying voltages generated by the resonance circuits 4A and 4B. The rectifier circuits 6A and 6B are connected in parallel and feed power to a load 10. Moreover, a switch 5 is provided to switch a connected state and an open state between the resonance circuits 4A and 4B, and a voltage controller 11 is provided to control an output voltage applied to the load 10, by controlling the switch 5.

Abstract: A plurality of pickup coils 2A and 2B are provided, resonance capacitors 3A and 3B forming resonance circuits 4A and 4B resonating at the frequency of an inductive path 1 are respectively connected in series with the pickup coils 2A and 2B, and the resonance circuits 4A and 4B are connected in series. Further, the resonance circuits 4A and 4B are respectively provided with rectifier circuits 6A and 6B for rectifying voltages generated by the resonance circuits 4A and 4B. The rectifier circuits 6A and 6B are connected in parallel and feed power to a load 10. Moreover, a switch 5 is provided to switch a connected state and an open state between the resonance circuits 4A and 4B, and a voltage controller 11 is provided to control an output voltage applied to the load 10, by controlling the switch 5.

Abstract: A composite core nonlinear reactor comprising a first core member of high permeability material forming a continuous annular magnetic path, a second core member of high permeability material forming an annular magnetic path locally broken by an air gap, a magnetic shield plate of low permeability material exhibiting high conductivity and thermal conductivity being sandwiched by the first and second core member and integrated therewith, and a coil winding, wherein the annular magnetic paths of the first and second core members are juxtaposed while sandwiching the magnetic shield plate and the coil winding is wound to interlink with both annular magnetic paths commonly

Abstract: An arrangement comprising a magnetic body (12) having a hole portion (11) for passage of a primary-side first induction line (2), a primary-side second induction line (5) for electrically feeding a load in a contact less manner, an added line (17) passing through the hole portion (11) of the magnetic body, and 1th contact (19) for short-circuiting the added line 17. According to this arrangement, short-circuiting provided by the 1th contact (19) can cut off electric feeding to the primary-side second induction line (5), thereby isolating the load (second-side power receiving circuit) without mechanically switching the power supply line.

Abstract: A composite core nonlinear reactor comprising a first core member of high permeability material forming a continuous annular magnetic path, a second core member of high permeability material forming an annular magnetic path locally broken by an air gap, a magnetic shield plate of low permeability material exhibiting high conductivity and thermal conductivity being sandwiched by the first and second core member and integrated therewith, and a coil winding, wherein the annular magnetic paths of the first and second core members are juxtaposed while sandwiching the magnetic shield plate and the coil winding is wound to interlink with both annular magnetic paths commonly

Abstract: An arrangement comprising a magnetic body (12) having a hole portion (11) for passage of a primary-side first induction line (2), a primary-side second induction line (5) for electrically feeding a load in a contactless manner, an added line (17) passing through the hole portion (11) of the magnetic body, and 1a-th contact (19) for short-circuiting the added line 17. According to this arrangement, short-circuiting provided by the 1a-th contact (19) can cut off electric feeding to the primary-side second induction line (5), thereby isolating the load (second-side power receiving circuit) without mechanically switching the power supply line.

Abstract: A cable for use in a high-frequency current feeding equipment constituted by passing an inner bundle (A) of wires (2) disposed at the same distance from the center of multiconductor cable (1) and outer bundles (B and C) of wires (3) through a ferrite (5) in such a way that the ampere-turns thereof are the same. The counter-electromotive force generated because of the difference of the spatial arrangement between the inner wires (2) and the outer wires (3) caused when stranded is canceled, and the current phases and current values of the wires (2 and 3) are forced to be exactly the same. Therefore, an increase in the resistance due to the proximity effect is prevented, and thereby the multiconductor cable (1) can be used as a high-frequency current cable.

Abstract: A proximity sensor (22), which generates an alternating current magnetic field in the direction of a guide rail (B) and detects a detection object by a loss of energy caused by a current which this alternating current magnetic field generates to flow to the detection object, is provided at the front end of each transport mover (V); a rear-end collision prevention detection plate (23), which enters between the guide rail (B) and the proximity sensor (22), is provided at the rear end of each transport mover (V); and a stopping device (W), which faces toward the proximity sensor (22) and forms a resonant circuit resonating at the generation frequency of the proximity sensor (22), is provided at a mover stopping location on the guide rail (B).

Abstract: An inductively coupled power distribution system for moving vehicles, in which resonating primary circuits to distribute power for resonating secondary circuits to collect and use in an optimized manner. In order to have all circuits resonating at substantially the same frequency, devices which detect and adjust resonating components are used, such as a frequency drift compensator in which the present frequency is compared to a reference voltage and causes a driver to be ON or OFF accordingly. Switches are driven CLOSED or OPEN respectively and when CLOSED, supplementary capacitors are included with a main capacitor in a primary resonant circuit. Dithering or pulsed control provides a continuous control of resonance, as the system takes some milliseconds to respond.

Abstract: A primary inductive path to which a high-frequency current is supplied from a power supply is laid along a guide rail for carrying car bodies and secondary electric power receiving circuit for receiving electric power from the primary inductive path in a contactless mode are disposed in the car bodies. Inductance in the primary inductive path is adjusted by disposing, in the power supply, a dummy inductor which is composed by overlapping a plurality of planar ferrite cores with gaps reserved so as to form a plurality of ferrite blocks and combining these ferrite blocks so as to form at centers thereof a run-through slot for passing the primary inductive path.

Abstract: A device for contactlessly supplying power to a moving body (2) such as a pallet being transported in a predetermined transport passage and carrying a device to be supplied with power while supplying power to the last-mentioned device. An induction wire (14) is laid along the transport passage (1) and a high frequency sine wave current is passed through the induction wire (14). The moving body (2) is provided with a coil (16) in which an electromotive force is produced by the action of the magnetic flux produced by the induction wire (14), a capacitor (31) cooperating with the coil (16) to form a resonance circuit adapted to resonate at the frequency of the current flowing through the induction wire (14), and a power switch circuit connected to the resonance circuit and supply power to the device to be supplied with power.

Abstract: A primary inductive track or path 450 for a resonant inductive power distribution system is made up from a number of modules 453, each supplied as a pre-built and substantially pre-tuned segment of the track. These modules have more than one capacitor 456, 457 and more than one inductance 458, 459 (generally, the inductance is the intrinsic inductance of the length of track) and each capacitor and adjacent inductor is capable of resonating at its own native frequency. A zero-inductance cable 452, carrying a small fraction of the circulating resonant current (comprising a mis-match or an error current), directly connects the capacitors at poles having equal polarity and tends to constrain the system limiting possible frequencies of resonance.

Abstract: A cargo transport system for automated warehousing, wherein there are guide rail structures each mounted from an opposing shelving face structure of two rows of storage shelves extending substantially parallel to each other and present opposing shelving face structures toward one another, each of the guide rail structures including a guide rail with sides, at least one or more power supply conductors, or control signal conductors, or both power supply conductors and control signal conductors disposed substantially parallel to each other and arranged along the side of at least one guide rail, a cargo carrier adapted to roll over the guide rails, and collector attached from the load carrier for maintaining substantially constant electrically conducting contact with the power supply conductors and the control signals conductors for respectively powering and controlling the movement of the cargo carrier.