Patents by Inventor Kraisorn Throngnumchai
Kraisorn Throngnumchai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11476748Abstract: A method for controlling a resonance type power converter including a first resonance circuit (L0, C0) and a shunt circuit (3), which converts and outputs the power of the DC power supply, shunting a current flowing into a first capacitor (CS) by controlling a second switching element (S2) during a predetermined period within turn-off period of a first switching element (S1), the first capacitor connected in parallel to the first switching element (S1), the second switching element (S2) included in the shunt circuit (3), and the first switching element (S1) operated in response to the resonance of the first resonance circuit (L0, C0).Type: GrantFiled: April 20, 2018Date of Patent: October 18, 2022Assignee: NISSAN MOTOR CO., LTD.Inventors: Toshihiro Kai, Kousuke Saito, Shigeharu Yamagami, Keisuke Inoue, Kraisorn Throngnumchai
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Publication number: 20210159773Abstract: A method for controlling a resonance type power converter including a first resonance circuit (L0, C0) and a shunt circuit (3), which converts and outputs the power of the DC power supply, shunting a current flowing into a first capacitor (CS) by controlling a second switching element (S2) during a predetermined period within turn-off period of a first switching element (S1), the first capacitor connected in parallel to the first switching element (S1), the second switching element (S2) included in the shunt circuit (3), and the first switching element (S1) operated in response to the resonance of the first resonance circuit (L0, C0).Type: ApplicationFiled: April 20, 2018Publication date: May 27, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Toshihiro KAI, Kousuke SAITO, Shigeharu YAMAGAMI, Keisuke INOUE, Kraisorn THRONGNUMCHAI
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Patent number: 10658940Abstract: 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.Type: GrantFiled: December 26, 2014Date of Patent: May 19, 2020Assignee: NISSAN MOTOR CO., LTD.Inventors: Kentaro Shin, Kraisorn Throngnumchai, Tetsuya Hayashi, Akinori Okubo
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Publication number: 20180006571Abstract: 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.Type: ApplicationFiled: December 26, 2014Publication date: January 4, 2018Applicant: NISSAN MOTOR CO., LTD.,Inventors: Kentaro SHIN, Kraisorn THRONGNUMCHAI, Tetsuya HAYASHI, Akinori OKUBO
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Patent number: 9774218Abstract: A non-contact power feeding apparatus including a power transmitting coil 5 receiving supply of electric power from an AC power supply, a power receiving coil 6 receiving electric power transmitted from the power transmitting coil 5 in a non-contacting manner, switching unit for switching connections with coils 61 to 63, output unit for outputting the electric power received from the power receiving coil 6 to a load 11 through the switching unit, and controller for controlling the switching unit. The power receiving coil 6 includes a plurality of coils 61 to 63 sharing their coil axes, the switching unit is connected to the coils 61 to 63 and switches polarity of the coils 61 to 63 in accordance with interlinkage magnetic flux passes through each of the coils 61 to 63.Type: GrantFiled: May 15, 2014Date of Patent: September 26, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Toshihiro Kai, Kraisorn Throngnumchai, Yuji Naruse, Yuuya Yamauchi
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Patent number: 9755544Abstract: A power conversion device (1) of the present invention includes a power module (4) for converting direct current electricity to alternating current electricity, first and second power supply buses (5, 6) connecting input terminals (12, 13) and the power module (4), and a metal casing (7) for housing the first and second power supply buses (5, 6) and the power module (4). The capacitive coupling between the first power supply bus (5) and the metal casing (7) and the capacitive coupling between the second power supply bus (6) and the metal casing (7) are substantially matched. Thus, radiation noise is reduced by reducing the propagation of switching noise to the metal casing.Type: GrantFiled: October 19, 2012Date of Patent: September 5, 2017Assignee: NISSAN MOTOR CO., LTD.Inventors: Kentarou Shin, Kraisorn Throngnumchai
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Patent number: 9610847Abstract: 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.Type: GrantFiled: July 18, 2012Date of Patent: April 4, 2017Assignee: Nissan Motor Co., Ltd.Inventors: Kentaro Shin, Kraisorn Throngnumchai
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Publication number: 20170093223Abstract: A non-contact power feeding apparatus including a power transmitting coil 5 receiving supply of electric power from an AC power supply, a power receiving coil 6 receiving electric power transmitted from the power transmitting coil 5 in a non-contacting manner, switching unit for switching connections with coils 61 to 63, output unit for outputting the electric power received from the power receiving coil 6 to a load 11 through the switching unit, and controller for controlling the switching unit. The power receiving coil 6 includes a plurality of coils 61 to 63 sharing their coil axes, the switching unit is connected to the coils 61 to 63 and switches polarity of the coils 61 to 63 in accordance with interlinkage magnetic flux passes through each of the coils 61 to 63.Type: ApplicationFiled: May 15, 2014Publication date: March 30, 2017Applicant: NISSAN MOTOR CO., LTD.Inventors: Toshihiro KAI, Kraisorn THRONGNUMCHAI, Yuji NARUSE, Yuuya YAMAUCHI
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Patent number: 9525302Abstract: 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.Type: GrantFiled: March 7, 2011Date of Patent: December 20, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Kraisorn Throngnumchai, Toshihiro Kai, Yusuke Minagawa
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Patent number: 9373998Abstract: 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?/4 from the open end. More specifically, “n” is an odd number of 1 or greater, “?” is the wavelength of noise generated by switching the switching element ON or OFF.Type: GrantFiled: September 10, 2012Date of Patent: June 21, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Kentaro Shin, Kraisorn Throngnumchai
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Patent number: 9050900Abstract: A non-contact charging device includes a power receiving device having at least a power receiving coil 1B which receives electric power from a power transmitting coil 1A in a non-contact manner by magnetic coupling; a battery 5 which is charged by the electric power; a state-of-charge detection unit for detecting the state of charge of the battery 5; and a permissible charging range setting unit for setting a permissible charging range indicating the range of the position of the power transmitting coil 1A relative to the position of the power receiving coil 1B, in which the charging of the battery 5 is permitted, according to the state of charge detected by the state-of-charge detection unit.Type: GrantFiled: November 16, 2011Date of Patent: June 9, 2015Assignee: NISSAN MOTOR CO., LTD.Inventors: Toshihiro Kai, Kraisorn Throngnumchai
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Publication number: 20140286070Abstract: A power conversion device (1) of the present invention includes a power module (4) for converting direct current electricity to alternating current electricity, first and second power supply buses (5, 6) connecting input terminals (12, 13) and the power module (4), and a metal casing (7) for housing the first and second power supply buses (5, 6) and the power module (4). The capacitive coupling between the first power supply bus (5) and the metal casing (7) and the capacitive coupling between the second power supply bus (6) and the metal casing (7) are substantially matched. Thus, radiation noise is reduced by reducing the propagation of switching noise to the metal casing.Type: ApplicationFiled: October 19, 2012Publication date: September 25, 2014Inventors: Kentarou Shin, Kraisorn Throngnumchai
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Publication number: 20140218979Abstract: 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?/4 from the open end. More specifically, “n” is an odd number of 1 or greater, “?” is the wavelength of noise generated by switching the switching element ON or OFF.Type: ApplicationFiled: September 10, 2012Publication date: August 7, 2014Applicant: NISSAN MOTOR CO., LTD.Inventors: Kentaro Shin, Kraisorn Throngnumchai
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Patent number: 8716976Abstract: A contactless electricity-supplying device (20) includes a secondary winding (201) to which electric power is supplied from a primary winding (101), by an AC power supply (6). The impedance characteristic (Z) of Z1 in regard to the frequency has a local maximum (ZMAX) near the frequency (f0) of the fundamental wave component of aforementioned AC power supply (6); and the impedance characteristic (Z) of Z2 in regard to the frequency has the aforementioned frequency (f0) of the fundamental wave component to be between, a frequency (fMAX) that has its local maximum (ZMAX) nearest to aforementioned frequency (f0) of the fundamental wave component, and a frequency (fMIN) that has its local minimum (ZMin) nearest to the frequency (f0) of the fundamental wave component. Z1 indicates that the coupling coefficient (k) between aforementioned primary winding (101) and aforementioned secondary winding (201) is a prescribed value (0.Type: GrantFiled: May 14, 2010Date of Patent: May 6, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Toshihiro Kai, Kraisorn Throngnumchai, Yusuke Minagawa, Yasuaki Hayami, Kengo Maikawa
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Publication number: 20130278212Abstract: A non-contact charging device includes a power receiving device having at least a power receiving coil 1B which receives electric power from a power transmitting coil 1A in a non-contact manner by magnetic coupling; a battery 5 which is charged by the electric power; a state-of-charge detection unit for detecting the state of charge of the battery 5; and a permissible charging range setting unit for setting a permissible charging range indicating the range of the position of the power transmitting coil 1A relative to the position of the power receiving coil 1B, in which the charging of the battery 5 is permitted, according to the state of charge detected by the state-of-charge detection unit.Type: ApplicationFiled: November 16, 2011Publication date: October 24, 2013Inventors: Toshihiro Kai, Kraisorn Throngnumchai
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Publication number: 20130026850Abstract: 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.Type: ApplicationFiled: March 7, 2011Publication date: January 31, 2013Inventors: Kraisorn Throngnumchai, Toshihiro Kai, Yusuke Minagawa
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Publication number: 20120056580Abstract: A contactless electricity-supplying device (20) includes a secondary winding (201) to which electric power is supplied from a primary winding (101), by an AC power supply (6). The impedance characteristic (Z) of Z1 in regard to the frequency has a local maximum (ZMAX) near the frequency (f0) of the fundamental wave component of aforementioned AC power supply (6); and the impedance characteristic (Z) of Z2 in regard to the frequency has the aforementioned frequency (f0) of the fundamental wave component to be between, a frequency (fMAX) that has its local maximum (ZMAX) nearest to aforementioned frequency (f0) of the fundamental wave component, and a frequency (fMIN) that has its local minimum (ZMin) nearest to the frequency (f0) of the fundamental wave component. Z1 indicates that the coupling coefficient (k) between aforementioned primary winding (101) and aforementioned secondary winding (201) is a prescribed value (0.Type: ApplicationFiled: May 14, 2010Publication date: March 8, 2012Inventors: Toshihiro Kai, Kraisorn Throngnumchai, Yusuke Minagawa, Yasuaki Hayami, Kengo Maikawa
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Patent number: 7751214Abstract: 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.Type: GrantFiled: April 23, 2007Date of Patent: July 6, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Yasuaki Hayami, Kentarou Shin, Kraisorn Throngnumchai
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Patent number: 7672148Abstract: 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 fc1 to a frequency fc2, where the frequency fc1 is smaller than the frequency fc2, and a second frequency range from a frequency fc3 to a frequency fc4, where the frequency fc3 is smaller than the frequency fc4. The frequencies fc1 and fc4 satisfy the inequalities (n?1)·fc4?n·fc2 and n·fc3?(n+1)·fc1 and/or satisfy an approximate expression n·fc4?(n+1)·fc1 where n is an integer. The frequencies fc2 and fc3 satisfy the inequalities n·fc2?fs??fs and fs+?fs?n·fc3 where fs±?fs represents a predetermined frequency band.Type: GrantFiled: April 25, 2007Date of Patent: March 2, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Kentarou Shin, Yasuaki Hayami, Kraisorn Throngnumchai
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Patent number: 7639518Abstract: 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.Type: GrantFiled: April 20, 2007Date of Patent: December 29, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Kentarou Shin, Yasuaki Hayami, Kraisorn Throngnumchai, Toshihiro Kai