Nissan Motor Company Limited

Konica-minolta Holdings, Inc.

Renault S.a.s.

Kraisorn Throngnumchai

Toshihiro Kai

Yasuaki Hayami

Kentarou Shin

Kentaro Shin

Teruyoshi Mihara

Tetsuya Hayashi

Masakatsu Hoshi

Yoshio Shimoida

Koichi Murakami

Yusuke Minagawa

Tomokazu Kakumoto

Hiroyuki Kaneko

Toshiro Karaki

Yoshio Simoida

Hideaki Tanaka

Keisuke Inoue

Shigeharu Yamagami

Saichirou Kaneko

Hiroshige Fukuhara

Kengo Maikawa

Yukitsugu Hirota

Akinori Okubo

Kousuke Saito

Yuuya Yamauchi

Yuji Naruse

Kazunori Nousou

Toshirou Karaki

A method for controlling a resonance type power converter including a first resonance circuit (L, C) and a shunt circuit (), which converts and outputs the power of the DC power supply, shunting a current flowing into a first capacitor (C) by controlling a second switching element (S) during a predetermined period within turn-off period of a first switching element (S), the first capacitor connected in parallel to the first switching element (S), the second switching element (S) included in the shunt circuit (), and the first switching element (S) operated in response to the resonance of the first resonance circuit (L, C).

Method for controlling resonant power conversion device, and resonant power conversion device

A power converter including an inverter for converting electric power output from a power supply, a first power feeding bus connected to the inverter and to the positive side of the power supply, a second power feeding bus connected to the inverter and the negative side of the power supply, and a plurality of connection circuits including a resistant member and a capacitive member which are connected in series, connected between the first power feeding bus and the second power feeding bus, and having at least two or more different impedances.

Power converter

A non-contact power feeding apparatus including a power transmitting coilreceiving supply of electric power from an AC power supply, a power receiving coilreceiving electric power transmitted from the power transmitting coilin a non-contacting manner, switching unit for switching connections with coilsto, output unit for outputting the electric power received from the power receiving coilto a loadthrough the switching unit, and controller for controlling the switching unit. The power receiving coilincludes a plurality of coilstosharing their coil axes, the switching unit is connected to the coilstoand switches polarity of the coilstoin accordance with interlinkage magnetic flux passes through each of the coilsto

Non-contact power feeding apparatus

A power conversion device () of the present invention includes a power module () for converting direct current electricity to alternating current electricity, first and second power supply buses () connecting input terminals () and the power module (), and a metal casing () for housing the first and second power supply buses () and the power module (). The capacitive coupling between the first power supply bus () and the metal casing () and the capacitive coupling between the second power supply bus () and the metal casing () are substantially matched. Thus, radiation noise is reduced by reducing the propagation of switching noise to the metal casing.

Power conversion device

In the present invention, a power conversion device is provided with an inverter for converting power output from a power source; a first power supply bus, connected to the positive electrode side of the inverter and the power source; a second power supply bus, connected to the negative electrode sides of the inverter and the power source; a first conductor that forms, along with the first power supply bus, a capacitor; a second conductor that forms, along with the second power supply bus, a capacitor; and a connection circuit, comprising a resistor, that electrically connects the first conductor and the second conductor.

As an aspect of the present invention, a noncontact power feeding apparatus includes: a power transmission resonator; and a power reception resonator configured to be magnetically coupled with the power transmission resonator by magnetic field resonance. The power transmission resonator is magnetically coupled with the power reception resonator by the magnetic field resonance, whereby electric power is supplied from an electric power source to the power reception resonator through the power transmission resonator. One of the power transmission resonator and the power reception resonator has a predetermined single resonant frequency, and the other one of the power transmission resonator and the power reception resonator has multiple resonant frequencies inclusive of the predetermined single resonant frequency.

Noncontact power feeding apparatus and noncontact power feeding method

A power conversion device has a power module that switches the ON/OFF state of a switching element and converts and outputs input power, a metal housing that houses the power module, and a conductive member connected to the housing. The conductive member is connected to the housing at a position having a length of n&#x3bb;/4 from the open end. More specifically, 'n' is an odd number of 1 or greater, '&#x3bb;' is the wavelength of noise generated by switching the switching element ON or OFF.

A non-contact charging device includes a power receiving device having at least a power receiving coilB which receives electric power from a power transmitting coilA in a non-contact manner by magnetic coupling; a batterywhich is charged by the electric power; a state-of-charge detection unit for detecting the state of charge of the battery; and a permissible charging range setting unit for setting a permissible charging range indicating the range of the position of the power transmitting coilA relative to the position of the power receiving coilB, in which the charging of the batteryis permitted, according to the state of charge detected by the state-of-charge detection unit.

Non-contact charging device

A contactless electricity-supplying device () includes a secondary winding () to which electric power is supplied from a primary winding (), by an AC power supply (). The impedance characteristic (Z) of Zin regard to the frequency has a local maximum (Z) near the frequency (f) of the fundamental wave component of aforementioned AC power supply (); and the impedance characteristic (Z) of Zin regard to the frequency has the aforementioned frequency (f) of the fundamental wave component to be between, a frequency (f) that has its local maximum (Z) nearest to aforementioned frequency (f) of the fundamental wave component, and a frequency (f) that has its local minimum (Z) nearest to the frequency (f) of the fundamental wave component. Zindicates that the coupling coefficient (k) between aforementioned primary winding () and aforementioned secondary winding () is a prescribed value (0.3), and that it is an impedance of just the primary side (Z) as seen from the output side of aforementioned AC power supply (); and Zindicates that the coupling coefficient (k) between aforementioned primary winding () and aforementioned secondary winding () is the aforementioned prescribed value (0.3), and that it is an impedance of just the secondary side (Z) as seen from the side of a load () to be connected to aforementioned secondary winding ().

Contactless electricity-supplying device

A power control apparatus and power control method that reduce harmonic noise produced when modulating a carrier wave frequency over predetermined cycles. A command value signal is generated for obtaining a desired output voltage, and a carrier wave is output. The frequency of the carrier wave is modulated by a desired frequency over predetermined cycles, and the desired frequency also modulates. The carrier wave is compared to a command value signal and a resulting control signal is provided to a switching unit. Harmonic noise caused by the modulation frequency can be spread, and the peak of the harmonic noise caused by the first modulation frequency can be reduced. Therefore, noise caused by a modulation frequency can be reduced.

Power control apparatus and method

A controller and method changing a frequency of a control (or carrier) signal in accordance with a waveform that periodically changes within a first frequency range from a frequency fcto a frequency fc, where the frequency fcis smaller than the frequency fc, and a second frequency range from a frequency fcto a frequency fc, where the frequency fcis smaller than the frequency fc. The frequencies fcand fcsatisfy the inequalities (n&#x2212;1)&#xb7;fc&#x2266;n&#xb7;fcand n&#xb7;fc&#x2266;(n+1)&#xb7;fcand/or satisfy an approximate expression n&#xb7;fc&#x2248;(n+1)&#xb7;fcwhere n is an integer. The frequencies fcand fcsatisfy the inequalities n&#xb7;fc&#x2266;fs&#x2212;&#x394;fs and fs+&#x394;fs&#x2266;n&#xb7;fcwhere fs&#xb1;&#x394;fs represents a predetermined frequency band.

Controller and method for frequency-varying control of power converter

A control device for a power converting device which performs PWM on an output from a DC power supply and produces an output of AC power, including: a current controller which converts a given current command value into a voltage command value; a carrier generator which generates a PWM carrier; a PWM generator which generates a PWM signal to be fed to the power converting device according to the voltage command value and the PWM carrier; a frequency controller which effects a change in the frequency of the PWM carrier from the carrier generator; and a current control gain controller which effects a change in the current control gain of the current controller according to the change in the frequency of the PWM carrier. The current control gain of the current controller is changed according to the change in the frequency of the PWM carrier from the carrier generator.

Device and method for controlling power converting device

An inverter system comprises a PWM generator that generates a control signal that causes a switching device to output an output value, a carrier signal generator that outputs a carrier signal to the PWM generator, a carrier frequency changing unit that changes a frequency of the carrier signal, and a target frequency setting unit that sets a target frequency and calculates a specific frequency from the target frequency. The carrier frequency changing unit changes a carrier frequency so that the specific frequency matches with a harmonic component of each of values of the carrier frequency.

Power conversion control apparatus and power conversion control method

A solid-state image-sensing elementis fed with, from a coupling controller, a signal &#x3c6;Sv that couples together the photoelectric conversion portions of every predetermined number of vertically adjacent pixels and a signal &#x3c6;Sh that couples together the photoelectric conversion portions of every predetermined number of horizontally adjacent pixels. This sets the numbers of pixels of which the photoelectric conversion portions are coupled together horizontally and vertically. A pixel output controllerfeeds a signal that controls the connection between the photoelectric conversion portion and the signal output portion in each pixel, and, within each group of pixels so coupled together, signals are outputted from one of those pixels.

Solid-state image-sensing device with selectively grouped pixels

Solid-state image-sensing device for acquisition of sensed-image data is described. A photoelectric converter disconnecting switch is turned on to make a forcible reset switch perform resetting. Then, the logarithmic conversion MOS transistor is reset according to the threshold voltage thereof. Then, an output commensurate with the amount of light incident on the photoelectric converter is delivered. The photoelectric converter disconnecting switch is turned on to perform resetting and then turned off. Then, the voltage at the end of the logarithmic conversion MOS transistor that is not connected to the photoelectric converter disconnecting switch is reset according to its threshold voltage. This provides an output unrelated to the incident light. With this sequence of operations, variations in sensitivity among individual pixels can be corrected for without irradiation with uniform light.

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Yokohama, Japan

Kraisorn Throngnumchai