Patents by Inventor Tomofumi Shiraishi
Tomofumi Shiraishi 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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Publication number: 20240082009Abstract: An artificial knee joint 1 includes: an insert member 2 embedded in a part of a joint surface of a medial condyle MC or lateral condyle LC of a tibia T; and a bridge member 3 disposed underneath the insert member 2, and having a length that allows both ends thereof to be anchored to a cortical bone of a tibia T.Type: ApplicationFiled: October 8, 2020Publication date: March 14, 2024Inventors: Kazunori Hino, Hiromasa Miura, Kunihiko Watamori, Yoshitaka Shiraishi, Tomofumi Kinoshita
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Patent number: 10358984Abstract: The gas turbine power generation system of the present invention repeats either the supply or absorption of power, in addition to generating power. A frequency converter for converting a frequency of power is connected between the rotating electrical machine and a power system via a power line, and a controller obtains a request for an output from the gas turbine power generation system and controls the combustor on the basis of the request. With respect to the frequency converter, the controller performs frequency converter control for changing the rotational speed of the rotating electrical machine on the basis of the request. The rotating electrical machine supplies or absorbs power in accordance with the change in the rotational speed. With respect to the speed adjustment mechanism, the controller performs speed adjustment mechanism control for setting the rotational speed to a reference value.Type: GrantFiled: December 18, 2014Date of Patent: July 23, 2019Assignee: Hitachi, Ltd.Inventors: Noriaki Hino, Naohiro Kusumi, Aung Ko Thet, Tomofumi Shiraishi, Masatoshi Yoshimura
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Patent number: 10263550Abstract: A gas turbine power generation system having an improved function to stabilize the power system is disclosed. The gas turbine power generation system has a dual-shaft gas turbine, an electric generator mechanically connected to a low pressure turbine of the dual-shaft gas turbine and electrically connected to an electric power system, a rotary electric machine mechanically connected to a high pressure turbine through a compressor of the dual-shaft gas turbine and electrically connected to the electric power system, wherein a power oscillation is suppressed by operation of the rotary electric machine as a motor or as a generator.Type: GrantFiled: December 19, 2014Date of Patent: April 16, 2019Assignee: Hitachi, Ltd.Inventors: Aung Ko Thet, Noriaki Hino, Naohiro Kusumi, Tomofumi Shiraishi, Masatoshi Yoshimura
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Patent number: 10094297Abstract: In order to enhance the tracking performance of power generation equipment with respect to a load variation and increase the reliability of the power generation equipment, a dynamic characteristic model simulating the dynamic characteristics of a multi-shaft gas turbine is used to calculate an output prediction value of a first power generator in a case where a combustor is controlled so as to match the output of the first power generator to an output target value; on the basis of the output target value and the output prediction value of the first power generator, a first power generator output instruction value as an instruction value for the output from the first power generator to a power system and a second power generator output instruction value as an instruction value for the output from a second power generator to the power system are calculated; and the combustor is controlled on the basis of the first power generator output instruction value and a frequency convertor is controlled on the basis of tType: GrantFiled: September 9, 2014Date of Patent: October 9, 2018Assignee: Hitachi, Ltd.Inventors: Naohiro Kusumi, Noriaki Hino, Aung Ko Thet, Tomofumi Shiraishi, Masatoshi Yoshimura
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Patent number: 10084405Abstract: A control device for power conversion device controls a power conversion device in a system driven by the power conversion device to which an electric motor outputs AC power, and includes: a control pulse generation unit configured to generate a control pulse of the power conversion device; and a negative phase creation unit configured to input a pulse signal output by the control pulse generation unit and rotational speed information of the electric motor, and to generate an inverted signal of an output signal of the control pulse generation unit, wherein the pulse signal of a half cycle during one cycle of voltage, the pulse signal being generated by the control pulse generation unit, and a pulse signal of a next half cycle during the one cycle of voltage, the pulse signal being generated by the negative phase creation unit, are symmetrical in positive and negative relationship of voltage.Type: GrantFiled: February 16, 2015Date of Patent: September 25, 2018Assignee: Hitachi, Ltd.Inventors: Masatoshi Yoshimura, Naohiro Kusumi, Noriaki Hino, Tomofumi Shiraishi, Aung Ko Thet
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Patent number: 9935578Abstract: A control device of a power converter controls a system including a converter that converts alternating current (AC) power of a power supply into direct current (DC) power, an inverter that converts the DC power into AC power, a capacitor that is charged with and discharges the DC power, and a rotary electric machine that is driven by the AC power supplied from the inverter or regenerates the AC power to the power supply, the control device including: a vibration suppression control unit that outputs a torque current command correction value for canceling an axial vibration component due to a vibration frequency of a transmission system including the rotary electric machine and an output compensation control unit that outputs a correction value for suppressing AC power of the power supply fluctuated by the vibration suppression control unit to a voltage control unit of the converter.Type: GrantFiled: June 6, 2017Date of Patent: April 3, 2018Assignee: Hitachi, Ltd.Inventors: Masatoshi Yoshimura, Naohiro Kusumi, Noriaki Hino, Tomofumi Shiraishi, Aung Ko Thet
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Publication number: 20180026569Abstract: A control device for power conversion device controls a power conversion device in a system driven by the power conversion device to which an electric motor outputs AC power, and includes: a control pulse generation unit configured to generate a control pulse of the power conversion device; and a negative phase creation unit configured to input a pulse signal output by the control pulse generation unit and rotational speed information of the electric motor, and to generate an inverted signal of an output signal of the control pulse generation unit, wherein the pulse signal of a half cycle during one cycle of voltage, the pulse signal being generated by the control pulse generation unit, and a pulse signal of a next half cycle during the one cycle of voltage, the pulse signal being generated by the negative phase creation unit, are symmetrical in positive and negative relationship of voltage.Type: ApplicationFiled: February 16, 2015Publication date: January 25, 2018Applicant: HITACHI, LTD.Inventors: Masatoshi YOSHIMURA, Naohiro KUSUMI, Noriaki HINO, Tomofumi SHIRAISHI, Aung Ko Thet .
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Publication number: 20170363013Abstract: The gas turbine power generation system of the present invention repeats either the supply or absorption of power, in addition to generating power. The gas turbine power generation system is provided with a first rotation shaft, a compressor, a combustor, a first turbine upon which combustion gasses impinge, thereby causing the first turbine to rotate, and driving the first rotation shaft, a rotating electrical machine connected to the first rotation shaft, a speed adjustment mechanism for controlling the speed of the compressor by adjusting an air volume, a frequency converter for converting a frequency of power, the frequency converter being connected between the rotating electrical machine and a power system via a power line, and a controller for obtaining a request for an output from the gas turbine power generation system and controlling the combustor on the basis of the request.Type: ApplicationFiled: December 18, 2014Publication date: December 21, 2017Applicant: Hitachi, Ltd.Inventors: Noriaki HINO, Naohiro KUSUMI, Aung Ko THET, Tomofumi SHIRAISHI, Masatoshi YOSHIMURA
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Publication number: 20170359014Abstract: A control device of a power converter controls a system including a converter that converts alternating current (AC) power of a power supply into direct current (DC) power, an inverter that converts the DC power into AC power, a capacitor that is charged with and discharges the DC power, and a rotary electric machine that is driven by the AC power supplied from the inverter or regenerates the AC power to the power supply, the control device including: a vibration suppression control unit that outputs a torque current command correction value for canceling an axial vibration component due to a vibration frequency of a transmission system including the rotary electric machine and an output compensation control unit that outputs a correction value for suppressing AC power of the power supply fluctuated by the vibration suppression control unit to a voltage control unit of the converter.Type: ApplicationFiled: June 6, 2017Publication date: December 14, 2017Inventors: Masatoshi YOSHIMURA, Naohiro KUSUMI, Noriaki HINO, Tomofumi SHIRAISHI, Aung Ko THET
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Publication number: 20170346427Abstract: A gas turbine power generation system having an improved function to stabilize the power system is disclosed. The gas turbine power generation system has a dual-shaft gas turbine, an electric generator mechanically connected to a low pressure turbine of the dual-shaft gas turbine and electrically connected to an electric power system, a rotary electric machine mechanically connected to a high pressure turbine through a compressor of the dual-shaft gas turbine and electrically connected to the electric power system, wherein a power oscillation is suppressed by operation of the rotary electric machine as a motor or as a generator.Type: ApplicationFiled: December 19, 2014Publication date: November 30, 2017Inventors: Aung Ko THET, Noriaki HINO, Naohiro KUSUMI, Tomofumi SHIRAISHI, Masatoshi YOSHIMURA
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Publication number: 20170335773Abstract: This gas turbine power generation system includes: a two-shaft gas turbine; a power generator that is driven by the two-shaft gas turbine and that generates power; an electric motor that is driven by power generated by the power generator; and a frequency converter that converts a frequency of the power that is transmitted between the power generator and the electric motor. The frequency converter is disposed within a predetermined range near the electric motor at the side opposite to the two-shaft gas turbine side relative to the electric motor so as to face the plane perpendicular to a rotation shaft of the electric motor.Type: ApplicationFiled: December 15, 2014Publication date: November 23, 2017Inventors: Tomofumi SHIRAISHI, Naohiro KUSUMI, Noriaki HINO, Aung Ko THET, Masatoshi YOSHIMURA
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Publication number: 20170145925Abstract: In order to enhance the tracking performance of power generation equipment with respect to a load variation and increase the reliability of the power generation equipment, a dynamic characteristic model simulating the dynamic characteristics of a multi-shaft gas turbine is used to calculate an output prediction value of a first power generator in a case where a combustor is controlled so as to match the output of the first power generator to an output target value; on the basis of the output target value and the output prediction value of the first power generator, a first power generator output instruction value as an instruction value for the output from the first power generator to a power system and a second power generator output instruction value as an instruction value for the output from a second power generator to the power system are calculated; and the combustor is controlled on the basis of the first power generator output instruction value and a frequency convertor is controlled on the basis of tType: ApplicationFiled: September 9, 2014Publication date: May 25, 2017Inventors: Naohiro KUSUMI, Noriaki HINO, Aung Ko THET, Tomofumi SHIRAISHI, Masatoshi YOSHIMURA
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Patent number: 8551417Abstract: In order to provide, when a plurality of fluids each containing a different kind of substance are mixed and reacted, a reactor having a mixing channel capable of forming a multi-layered flow in a radial direction in the cylindrically-shaped mixing channel; improving mixing performance by synergizing swirling effects of mixture of turbulent flows and a swirling flow; and producing a reaction product with a high yield as well as high efficiency, a mixing channel 1 which mixes fluids 4 and 5 each containing the different kind of substance is cylindrically shaped, and inlet passages 2 and 3 which introduce the fluids 4 and 5, respectively, are plurally arranged in a manner offset from a central axis of the mixing channel 1.Type: GrantFiled: August 12, 2009Date of Patent: October 8, 2013Assignee: Hitachi Plant Technologies, Ltd.Inventors: Tomofumi Shiraishi, Tsutomu Kawamura, Takeyuki Kondo
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Patent number: 8450531Abstract: An object of the present invention is to provide a method for commercially manufacturing acrolein in a large flow rate by making supercritical water and an acid interact with glycerin, wherein by efficiently mixing high-concentration glycerin and supercritical water with each other, the method is made capable of making the synthesis stably proceed with a high yield while the occlusion and abrasion of the pipes and devices due to the generation of by-products are being suppressed.Type: GrantFiled: December 28, 2010Date of Patent: May 28, 2013Assignee: Hitachi Plant Technologies, Ltd.Inventors: Takeyuki Kondo, Masayuki Kamikawa, Kenichiro Oka, Toshiaki Matsuo, Masashi Tanto, Yasunari Sase, Hiroyuki Ito, Tomofumi Shiraishi, Tsutomu Kawamura, Naruyasu Okamoto
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Publication number: 20110171082Abstract: In order to provide, when a plurality of fluids each containing a different kind of substance are mixed and reacted, a reactor having a mixing channel capable of forming a multi-layered flow in a radial direction in the cylindrically-shaped mixing channel; improving mixing performance by synergizing swirling effects of mixture of turbulent flows and a swirling flow; and producing a reaction product with a high yield as well as high efficiency, a mixing channel 1 which mixes fluids 4 and 5 each containing the different kind of substance is cylindrically shaped, and inlet passages 2 and 3 which introduce the fluids 4 and 5, respectively, are plurally arranged in a manner offset from a central axis of the mixing channel 1.Type: ApplicationFiled: August 12, 2009Publication date: July 14, 2011Applicant: HITACHI PLANT TECHNOLOGIES, LTD.Inventors: Tomofumi Shiraishi, Tsutomu Kawamura, Takeyuki Kondo
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Publication number: 20110160447Abstract: An object of the present invention is to provide a method for commercially manufacturing acrolein in a large flow rate by making supercritical water and an acid interact with glycerin, wherein by efficiently mixing high-concentration glycerin and supercritical water with each other, the method is made capable of making the synthesis stably proceed with a high yield while the occlusion and abrasion of the pipes and devices due to the generation of by-products are being suppressed.Type: ApplicationFiled: December 28, 2010Publication date: June 30, 2011Inventors: Takeyuki KONDO, Masayuki Kamikawa, Kenichiro Oka, Toshiaki Matsuo, Masashi Tanto, Yasunari Sase, Hiroyuki Ito, Tomofumi Shiraishi, Tsutomu Kawamura, Naruyasu Okamoto
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Patent number: 7901639Abstract: There is provided a reaction apparatus which is capable of keeping the pressure inside the reactor and is applicable to various fields. This reaction apparatus comprises: a raw material tank (2) for storing a raw material; a high-pressure pump (3) communicated with the raw material tank (2) and designed to deliver the raw material therefrom; a reactor (1) which is disposed on the downstream side of the high-pressure pump (3) and designed to be supplied with the raw material in a compressed state; a heating bath (11) for heating the reactor (1) to promote a reaction; and a product tank (7) for receiving and recovering a product; wherein the reaction apparatus is further equipped with an inlet port which is interposed between the heating bath (11) and the product tank (7), and with an injection pump (6) for injecting an injecting liquid through the inlet port, whereby a pressure of product flowing into the product tank (7) is enabled to be reduced by making use of the flow rate of the injecting liquid.Type: GrantFiled: July 27, 2007Date of Patent: March 8, 2011Assignee: Hitachi, Ltd.Inventors: Tadashi Sano, Mio Suzuki, Yukako Asano, Shigenori Togashi, Tsutomu Kawamura, Tomofumi Shiraishi
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Publication number: 20080175768Abstract: There is provided a reaction apparatus which is capable of keeping the pressure inside the reactor and is applicable to various fields. This reaction apparatus comprises: a raw material tank (2) for storing a raw material; a high-pressure pump (3) communicated with the raw material tank (2) and designed to deliver the raw material therefrom; a reactor (1) which is disposed on the downstream side of the high-pressure pump (3) and designed to be supplied with the raw material in a compressed state; a heating bath (11) for heating the reactor (1) to promote a reaction; and a product tank (7) for receiving and recovering a product; wherein the reaction apparatus is further equipped with an inlet port which is interposed between the heating bath (11) and the product tank (7), and with an injection pump (6) for injecting an injecting liquid through the inlet port, whereby a pressure of product flowing into the product tank (7) is enabled to be reduced by making use of the flow rate of the injecting liquid.Type: ApplicationFiled: July 27, 2007Publication date: July 24, 2008Inventors: Tadashi Sano, Mio Suzuki, Yukako Asano, Shigenori Togashi, Tsutomu Kawamura, Tomofumi Shiraishi
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Publication number: 20060216761Abstract: The present invention relates to an isolation material for an endocrine disrupter, which is prepared by immobilizing an anti-endocrine disrupter antibody to a graft-chain-containing carrier made of a polymeric material via covalent binding. According to the present invention, an isolation material for an endocrine disrupter, which is capable of specific and efficient isolation of an endocrine disruptor, and an endocrine disrupter concentration and a clean-up method capable of specific and efficient concentration or clean-up of an endocrine disruptor at a high rate can be afforded.Type: ApplicationFiled: May 30, 2003Publication date: September 28, 2006Inventors: Kyoichi Saito, Tomofumi Shiraishi, Yasuhiro Goda
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Publication number: 20060210444Abstract: There is provided means for increasing a yield and a selectivity of objective substancean objective substance in a consecutive reaction. A substance manufacturing equipment for reacting a substance A and a substance B that can perform a consecutive reaction to produce a product of a first stage reaction as an objective substance, including: a microchannel; a mixing portion including a channel for introducing a solution containing the substance A into the microchannel and a channel for introducing a solution containing the substance B into the microchannel; and a temperature control equipment for controlling a temperature of a reaction system in the microchannel, wherein the temperature control equipment controls the temperature of the reaction system in the microchannel within a temperature range higher than a reaction temperature by a batch method and lower than a boiling point of the reaction system.Type: ApplicationFiled: March 15, 2006Publication date: September 21, 2006Inventors: Yukako Asano, Shigenori Togashi, Masashi Oda, Tomofumi Shiraishi, Tsutomu Kawamura