Patents by Inventor Mitsuhiko Kanda
Mitsuhiko Kanda 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: 9570972Abstract: A CR snubber circuit capable of increasing a reduction effect of the effective inductance component and suppressing a ringing component generated at the time of switching the switching element is obtained. A first current path formed on one surface of the substrate and a second current path formed on the other surface, which is the opposite side of the one surface of the substrate, are opposed to each other with the substrate being sandwiched therebetween, and the capacitor 5 and the resistor 6 are arranged such that current flows in opposite directions in the first current path and the second current path, and a band elimination filter is formed by the capacitor 5, the resistor 6, and an effective inductance component obtained by coupling an inductance component included in the first current path and an inductance component included in the second current path.Type: GrantFiled: October 2, 2013Date of Patent: February 14, 2017Assignee: Mitsubishi Electric CorporationInventors: Mitsuhiko Kanda, Shizuri Tamura, Akira Hatai, Yasuhiro Sekimoto, Yuji Nojiri, Yoshitomo Hayashi
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Publication number: 20160344279Abstract: A CR snubber circuit capable of increasing a reduction effect of the effective inductance component and suppressing a ringing component generated at the time of switching the switching element is obtained. A first current path formed on one surface of the substrate and a second current path formed on the other surface, which is the opposite side of the one surface of the substrate, are opposed to each other with the substrate being sandwiched therebetween, and the capacitor 5 and the resistor 6 are arranged such that current flows in opposite directions in the first current path and the second current path, and a band elimination filter is formed by the capacitor 5, the register 6, and an effective inductance component obtained by coupling an inductance component included in the first current path and an inductance component included in the second current path.Type: ApplicationFiled: October 2, 2013Publication date: November 24, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Mitsuhiko KANDA, Shizuri TAMURA, Akira HATAI, Yasuhiro SEKIMOTO, Yuji NOJIRI, Yoshitomo HAYASHI
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Patent number: 9099906Abstract: An inverter that drives a motor and a noise filter are arranged on a surface of a motor housing, and the inverter and the noise filter are integrated with the motor housing. The noise filter reduces a common-mode current generated by a switching operation of the inverter to flow out to a side of a three-phase power supply through the motor housing.Type: GrantFiled: July 6, 2010Date of Patent: August 4, 2015Assignee: Mitsubishi Electric CorporationInventors: Shizuri Tamura, Mitsuhiko Kanda
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Publication number: 20130221895Abstract: A motor drive circuit that performs PWM driving of an AC motor includes: rectifying circuit that rectifies power from an AC power supply; a DC intermediate circuit that smoothes an output of the rectifying circuit and holds the smoothed output; an inverter circuit that executes a PWM control of a voltage applied to the AC motor based on DC power held in the DC intermediate circuit; and a filter circuit that is inserted between the AC power supply and the rectifying circuit, wherein the filter circuit includes a noise filter that is inserted between the AC power supply and the rectifying circuit and reduces harmonic noise, and a band elimination filter that is arranged at a posterior stage of the noise filter and reduces harmonic noise having a bandwidth, which can be generated by the PWM control.Type: ApplicationFiled: November 24, 2010Publication date: August 29, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Mitsuhiko Kanda, Akira Hatai
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Publication number: 20130106255Abstract: An inverter that drives a motor and a noise filter are arranged on a surface of a motor housing, and the inverter and the noise filter are integrated with the motor housing. The noise filter reduces a common-mode current generated by a switching operation of the inverter to flow out to a side of a three-phase power supply through the motor housing.Type: ApplicationFiled: July 6, 2010Publication date: May 2, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shizuri Tamura, Mitsuhiko Kanda
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Patent number: 5367275Abstract: An LC filter is provided which includes a first conductive sheet, a first dielectric sheet laminated on the first conductive sheet, a second conductive sheet laminated on the first dielectric sheet, a second dielectric sheet laminated on the second conductive sheet, a third conductive sheet laminated on the second dielectric sheet, and a third dielectric sheet laminated on a third conductive sheet formed as an integral body which has the first, the second and the third conductive sheets and the first, the second and the third dielectric sheets, are coiled. The first and the second conductive sheets are respectively provided with input terminals and output terminals.Type: GrantFiled: March 5, 1993Date of Patent: November 22, 1994Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Mitsunobu Esaki, Shigefumi Kimura, Chiharu Miyazaki, Sunao Hiraki, Katsumi Tomiyama, Naoto Oka, Hironobu Tsutsumi, Sachio Igawa, Toshio Ootake, Mitsuhiko Kanda
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Patent number: 5227746Abstract: An LC filter is provided which includes a first conductive sheet, a first dielectric sheet laminated on the first conductive sheet, a second conductive sheet laminated on the first dielectric sheet, a second dielectric sheet laminated on the second conductive sheet, a third conductive sheet laminated on the second dielectric sheet, and a third dielectric sheet laminated on a third conductive sheet formed as an integral body which has the first, the second and the third conductive sheets and the first, the second and the third dielectric sheets, are coiled. The first and the second conductive sheets are respectively provided with input terminals and output terminals.Type: GrantFiled: January 23, 1992Date of Patent: July 13, 1993Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Mitsunobu Esaki, Shigefumi Kimura, Chiharu Miyazaki, Sunao Hiraki, Katsumi Tomiyama, Naoto Oka, Hironobu Tsutsumi, Sachio Igawa, Toshio Ootake, Mitsuhiko Kanda