Abstract: On the ground, a plurality of primary power supply transformers are separately installed with a longitudinal direction of magnetic poles matching a vehicle traveling direction. The primary power supply transformers each include a double-sided coil with an H-shaped core around which a wire is wound. On a vehicle, a secondary power supply transformer including an H-shaped core is mounted with a longitudinal direction of magnetic poles matching a vehicle front-back direction. The distance between the primary power supply transformers is set such that the distance between the centers of the magnetic poles of the neighboring primary power supply transformers does not exceed 3D where D represents the size of the magnetic poles.

Abstract: According to one embodiment, contactless power transfer transformer includes power transmission coil and power reception coil. At least one of the power transmission coil and the power reception coil is configured by coupled and both-sides wound coil. The coupled and both-sides wound coil is configured by both-sides wound coils. One of magnetic poles of one of the both-sides wound coils is connected to one of the magnetic poles of adjacent one of the both-sides wound coils. Directions of magnetic fluxes toward corresponding coil from each of the magnetic poles connected to each other are identical. The both-sides wound coils are selected so that leakage magnetic flux around moving body does not exceed predetermined value. Number of the both-sides wound coils is set so that value obtained by multiplying power transfer capacity of one of the both-sides wound coils by the number satisfies capacity of the transformer.

Abstract: On the ground, a plurality of primary power supply transformers are separately installed with a longitudinal direction of magnetic poles matching a vehicle traveling direction. The primary power supply transformers each include a double-sided coil with an H-shaped core around which a wire is wound. On a vehicle, a secondary power supply transformer including an H-shaped core is mounted with a longitudinal direction of magnetic poles matching a vehicle front-back direction. The distance between the primary power supply transformers is set such that the distance between the centers of the magnetic poles of the neighboring primary power supply transformers does not exceed 3D where D represents the size of the magnetic poles.

Abstract: A contactless power transfer transformer includes main body. The main body includes magnetic pole core members, winding wire core member, and wire. The winding wire core member is orthogonal to the magnetic pole core members and connects one portion of each of the pair of parallel magnetic pole core members with each other. The main body is fixed to fixing plate having a magnetic shield function and heat dissipation function. The connecting position of the winding wire core member with respect to the magnetic pole core members is located toward one side from a center in the longitudinal direction of the magnetic pole core members. At least a space between the pair of the magnetic coil core members each containing an end portion longer in distance to the connecting position is used as an arrangement space of component electrically connected to the electric wire.

Abstract: According to one embodiment, contactless power transfer apparatus includes: transmission coil; primary capacitor; reception coil opposing transmission coil through gap; and secondary capacitor. Specification of frequency of the transmission coil and that of the reception coil are equal. At least one of electrical power specification and gap length specification of the transmission coil differ from the reception coil. When the electrical power specification of the power transmission coil differ from that of the power reception coil, the power is supplied from the transmission coil to the reception coil by using smaller one of the power of the transmission coil and of the reception coil as maximum power. When the gap length specification of the transmission coil differs from that of the reception coil, the transmission coil opposes the reception coil through the gap length, which is the specification of the transmission coil.

Abstract: According to one embodiment, a contactless power transfer transformer includes a both-sides wound coil. The both-sides wound coil includes an inter-magnetic-pole core portion between two magnetic pole portions. The winding wire is wound around a wound region of the inter-magnetic-pole core portion. The inter-magnetic-pole includes: a plurality of separate magnetic members that connect to each of the two magnetic pole portions, and are arranged with a spacing therebetween and in parallel with each other; and a heat conductor that is alternately arranged with respect to the separate magnetic members on a plane formed by the separate magnetic members so as to be in contact with the separate magnetic members. Heat generated by the separate magnetic members is guided to the outside of the wound region of the inter-magnetic-pole core portion through the heat conductor, and is dissipated.

Abstract: According to one embodiment, a contactless power transfer transformer includes a both-sides wound coil. The both-sides wound coil includes an inter-magnetic-pole core portion between two magnetic pole portions. The winding wire is wound around a wound region of the inter-magnetic-pole core portion. The inter-magnetic-pole includes: a plurality of separate magnetic members that connect to each of the two magnetic pole portions, and are arranged with a spacing therebetween and in parallel with each other; and a heat conductor that is alternately arranged with respect to the separate magnetic members on a plane formed by the separate magnetic members so as to be in contact with the separate magnetic members. Heat generated by the separate magnetic members is guided to the outside of the wound region of the inter-magnetic-pole core portion through the heat conductor, and is dissipated.

Abstract: A SS-method bidirectional contactless power supply device is arranged such that at the time of G2V, a second power converter converts commercial alternating current to direct current, a first power converter converts the direct current to high-frequency alternating current, and a third power converter converts the high-frequency alternating current to the direct current to charge an electric storage device. On driving the first power converter with a constant voltage, the electric storage device is charged with a constant current. At the time of V2G, the third power converter converts the direct current to the high-frequency alternating current, the first power converter converts the high-frequency alternating current to the direct current, and the second power converter converts the direct current to the commercial alternating current. On driving the third power converter with the constant current, an output of the first power converter becomes the constant voltage.

Abstract: A contactless power transfer core used for a power transmission coil or a power reception coil of a contactless power transfer apparatus includes: a winding core part wound by an electric wire; and a magnetic pole core part constituting a magnetic pole portion provided at both sides of the winding core part. A height of the uppermost part of a ferrite plate arranged on a face of the magnetic pole core part at a side opposing a counterpart coil is equal to or greater than a height of an outer circumference of the electric wire wound around the winding core part, and a height of the ferrite plate of a face at a side not opposing the counterpart coil is lower than the height of the outer circumference of the electric wire wound around the winding core.

Abstract: A half-bridge inverter is used for a high frequency alternating current power supply to be connected to a primary side of a contactless power transformer, and a voltage-doubler rectifier is used to convert a secondary-side alternating current output of the contactless power transformer into a direct current.

Abstract: A contactless power transfer transformer includes main body. The main body includes magnetic pole core members, winding wire core member, and wire. The winding wire core member is orthogonal to the magnetic pole core members and connects one portion of each of the pair of parallel magnetic pole core members with each other. The main body is fixed to fixing plate having a magnetic shield function and heat dissipation function. The connecting position of the winding wire core member with respect to the magnetic pole core members is located toward one side from a center in the longitudinal direction of the magnetic pole core members. At least a space between the pair of the magnetic coil core members each containing an end portion longer in distance to the connecting position is used as an arrangement space of component electrically connected to the electric wire.

Abstract: According to one embodiment, a contactless power transfer transformer includes a both-sides wound coil. The both-sides wound coil includes an inter-magnetic-pole core portion between two magnetic pole portions. The winding wire is wound around a wound region of the inter-magnetic-pole core portion. The inter-magnetic-pole includes: a plurality of separate magnetic members that connect to each of the two magnetic pole portions, and are arranged with a spacing therebetween and in parallel with each other; and a heat conductor that is alternately arranged with respect to the separate magnetic members on a plane formed by the separate magnetic members so as to be in contact with the separate magnetic members. Heat generated by the separate magnetic members is guided to the outside of the wound region of the inter-magnetic-pole core portion through the heat conductor, and is dissipated.

Abstract: According to one embodiment, contactless power transfer transformer includes power transmission coil and power reception coil. At least one of the power transmission coil and the power reception coil is configured by coupled and both-sides wound coil. The coupled and both-sides wound coil is configured by both-sides wound coils. One of magnetic poles of one of the both-sides wound coils is connected to one of the magnetic poles of adjacent one of the both-sides wound coils. Directions of magnetic fluxes toward corresponding coil from each of the magnetic poles connected to each other are identical. The both-sides wound coils are selected so that leakage magnetic flux around moving body does not exceed predetermined value. Number of the both-sides wound coils is set so that value obtained by multiplying power transfer capacity of one of the both-sides wound coils by the number satisfies capacity of the transformer.

Abstract: An opening and closing apparatus includes: a drive unit provided in an opening and closing body which is openably and closeably attached to a main body, and opening and closing the opening and closing body with respect to the main body by driving the opening and closing body using electric power; a secondary energy storage device provided in the opening and closing body and electrically connected to the drive unit in such a manner that the secondary energy storage device can be inductively charged and can supply electric power to the drive unit; and an electric power receiving coil provided in the opening and closing body so as to be capable of facing an electric power transmitting coil which is provided on the main body, and is electrically connected to a primary energy storage device installed on the main body, and electrically connected to the secondary energy storage device.

Abstract: Provided is a contactless power transfer device for a moving object. Each of a power transmission coil and a power receiving coil comprises an H-shaped core, and first, second and third search coils are installed on a magnetic pole object of the H-shaped core of the power transmission coil. A y-direction positional deviation between the power transmission coil and the power receiving coil is detected using voltages measured at the first and second search coils, and an x-direction positional deviation is detected using voltages measured at the third search coils.

Abstract: An example according to one embodiment includes a first coil and a second coil spaced apart therefrom. The system is supplied with power from a primary-side circuit to a secondary-side circuit and vice versa. The primary-side circuit includes the first coil. The secondary-side circuit includes the second coil. The primary-side circuit connects to a first converter that converts direct current into alternating current and vice versa. The first converter connects to second converter that converts direct current into alternating current and vice versa, and the second converter further connects to a commercial power supply. The secondary-side circuit connects to third converter that converts direct current into alternating current and vice versa, and the third converter further connects to direct current power supply of a moving body. Bidirectional power transfer is performed only by a switching operation of the first converter, the second converter, and the third converter.

Abstract: An opening and closing apparatus includes: a drive unit provided in an opening and closing body which is openably and closeably attached to a main body, and opening and closing the opening and closing body with respect to the main body by driving the opening and closing body using electric power; a secondary energy storage device provided in the opening and closing body and electrically connected to the drive unit in such a manner that the secondary energy storage device can be inductively charged and can supply electric power to the drive unit; and an electric power receiving coil provided in the opening and closing body so as to be capable of facing an electric power transmitting coil which is provided on the main body, and is electrically connected to a primary energy storage device installed on the main body, and electrically connected to the secondary energy storage device.

Abstract: In an example of a system, power is transferred from a transmission coil to a reception coil by electromagnetic induction. A detecting unit calculates a difference between a standard value and a measured value, detects presence of a metallic foreign object on the transmission coil based on the difference, and outputs a signal when the metallic foreign object is detected. The standard value is obtained by supplying electrical power to the transmission coil when a metallic foreign object is absent on the transmission coil. The measured value is obtained by supplying electrical power to the transmission coil. If PIN0 represents input power of the transmission coil, PL0 represents output power of the reception coil, Pc1 represents copper loss of the transmission coil, and Pc2, represents copper loss of the reception coil, the detecting unit uses a value expressed by (PIN0-PL0-Pc1-Pc2) as the standard value and the measured value.

Abstract: A contactless power transfer core used for a power transmission coil or a power reception coil of a contactless power transfer apparatus includes: a winding core part wound by an electric wire; and a magnetic pole core part constituting a magnetic pole portion provided at both sides of the winding core part. A height of the uppermost part of a ferrite plate arranged on a face of the magnetic pole core part at a side opposing a counterpart coil is equal to or greater than a height of an outer circumference of the electric wire wound around the winding core part, and a height of the ferrite plate of a face at a side not opposing the counterpart coil is lower than the height of the outer circumference of the electric wire wound around the winding core.

Abstract: Provided is a contactless power transfer device for a moving object. Each of a power transmission coil and a power receiving coil comprises an H-shaped core, and first, second and third search coils are installed on a magnetic pole object of the H-shaped core of the power transmission coil. A y-direction positional deviation between the power transmission coil and the power receiving coil is detected using voltages measured at the first and second search coils, and an x-direction positional deviation is detected using voltages measured at the third search coils.