Patents by Inventor Yusuke YAMAKAJI
Yusuke YAMAKAJI 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: 11946953Abstract: An electromagnetic field sensor includes a conductor plate, a signal output terminal to output a potential difference between the conductor plate and the signal output terminal, and a linear conductor including a first end electrically connected to a plate face of the conductor plate and a second end opposite to the first end and provided with a signal output terminal. The electromagnetic field sensor includes a loop plane that is formed by the conductor plate and the linear conductor and orthogonal to a plate face of the conductor plate when viewed from the side.Type: GrantFiled: May 11, 2020Date of Patent: April 2, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Yusuke Yamakaji
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Patent number: 11894784Abstract: A power conversion device includes: a power conversion circuit that outputs power to a power output terminals to which electric cables of a power cable for supplying AC power to a motor is connected; an encoder circuit that outputs encoder information on the basis of angle information input to an information input terminal and supplied from signal lines of a signal transmission cable; a control unit that outputs a control signal that controls the power conversion circuit on the basis of the encoder information supplied from the encoder circuit; a shield terminal connected to a shield of the signal transmission cable which is electrically connected to a ground line of a power cable on the motor side; and a determination unit that detects a current input to the shield terminal and flowing through the shield of the signal transmission cable, and outputs disconnection detection information for disconnection in the shield.Type: GrantFiled: December 3, 2020Date of Patent: February 6, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Nobuyuki Haruna, Keita Takahashi, Yusuke Yamakaji, Masaomi Washino
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Publication number: 20240014750Abstract: A power conversion device includes: a power conversion circuit that outputs power to a power output terminals to which electric cables of a power cable for supplying AC power to a motor is connected; an encoder circuit that outputs encoder information on the basis of angle information input to an information input terminal and supplied from signal lines of a signal transmission cable; a control unit that outputs a control signal that controls the power conversion circuit on the basis of the encoder information supplied from the encoder circuit; a shield terminal connected to a shield of the signal transmission cable which is electrically connected to a ground line of a power cable on the motor side; and a determination unit that detects a current input to the shield terminal and flowing through the shield of the signal transmission cable, and outputs disconnection detection information for disconnection in the shield.Type: ApplicationFiled: December 3, 2020Publication date: January 11, 2024Applicant: Mitsubishi Electric CorporationInventors: Nobuyuki HARUNA, Keita TAKAHASHI, Yusuke YAMAKAJI, Masaomi WASHINO
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Publication number: 20230344330Abstract: A noise propagating to outside of a power conversion device is reduced. A power conversion device includes at least one external electrode, a switching element, a noise filter connected between at least one external electrode and switching element, at least one first wire to connect at least one external electrode and noise filter, a second wire to connect noise filter and switching element, and a magnetic filter attached to second wire. An attenuation characteristic A [dB] and an attenuation characteristic B [dB] satisfy a relationship of B<A, where A is an attenuation characteristic of noise filter, and B is an attenuation characteristic due to spatial coupling between at least one first wire and second wire that is located between switching element and magnetic filter.Type: ApplicationFiled: April 20, 2020Publication date: October 26, 2023Applicant: Mitsubishi Electric CorporationInventors: Yusuke YAMAKAJI, Ikuro SUGA, Satoru ICHIKI, Koichi ARISAWA, Tatsuya YAMANAKA
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Publication number: 20230127382Abstract: An electromagnetic field sensor includes a conductor plate, a signal output terminal to output a potential difference between the conductor plate and the signal output terminal, and a linear conductor including a first end electrically connected to a plate face of the conductor plate and a second end opposite to the first end and provided with a signal output terminal. The electromagnetic field sensor includes a loop plane that is formed by the conductor plate and the linear conductor and orthogonal to a plate face of the conductor plate when viewed from the side.Type: ApplicationFiled: May 11, 2020Publication date: April 27, 2023Applicant: Mitsubishi Electric CorporationInventor: Yusuke YAMAKAJI
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Publication number: 20220335276Abstract: An information processing device for processing a signal with a neural network includes: a Fourier transform layer for performing Fourier transform on an input signal and outputting a first amplitude signal and a first phase signal; an amplitude connection layer for multiplying the first amplitude signal by a first weight matrix for which a value is to be updated through training, and outputting a second amplitude signal; a phase connection layer for multiplying the first phase signal by a second weight matrix for which a value is to be updated through training, and outputting a second phase signal; a complex activation layer for updating at least the second amplitude signal, of the second amplitude signal and the second phase signal, using a complex activation function f in a spatial frequency domain; and an inverse Fourier transform layer for combining the updated signals and performing inverse Fourier transform thereon.Type: ApplicationFiled: September 13, 2019Publication date: October 20, 2022Applicant: Mitsubishi Electric CorporationInventors: Yusuke YAMAKAJI, Kunihiko FUKUSHIMA
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Patent number: 11211912Abstract: A noise filter includes a first capacitor and a second capacitor which are two line-to-line capacitors. Currents flowing through the first capacitor and the second capacitor are in directions opposite to each other, and meanwhile, currents flowing through a first connection wire and a second connection wire are in the same direction and parallel to each other. Accordingly, magnetic coupling is caused between the connection wires and the line-to-line capacitors. Thus, the residual inductance of a line-to-line capacitor itself is reduced, whereby an attenuation characteristic for normal mode noise is further improved.Type: GrantFiled: May 18, 2018Date of Patent: December 28, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Yusuke Yamakaji, Ikuro Suga
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Publication number: 20210058053Abstract: A noise filter includes a first capacitor and a second capacitor which are two line-to-line capacitors. Currents flowing through the first capacitor and the second capacitor are in directions opposite to each other, and meanwhile, currents flowing through a first connection wire and a second connection wire are in the same direction and parallel to each other. Accordingly, magnetic coupling is caused between the connection wires and the line-to-line capacitors. Thus, the residual inductance of a line-to-line capacitor itself is reduced, whereby an attenuation characteristic for normal mode noise is further improved.Type: ApplicationFiled: May 18, 2018Publication date: February 25, 2021Applicant: Mitsubishi Electric CorporationInventors: Yusuke YAMAKAJI, Ikuro SUGA
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Publication number: 20190361062Abstract: A looped conductor (1) is opened at both ends, one end (1a) is connected to a conductor plate (2), and the other end (1b) is connected to a lead wire (5b). The conductor plate (2) is disposed parallel to a loop surface of the looped conductor (1) and has a shape covering the looped conductor (1). A lead wire (5a) is connected to the conductor plate (2), and outputs from the lead wire (5a) and the lead wire (5b) are specified as a measurement output of an electromagnetic field probe.Type: ApplicationFiled: March 27, 2017Publication date: November 28, 2019Applicant: Mitsubishi Electric CorporationInventors: Yusuke YAMAKAJI, Hideyuki OHASHI, Chiharu MIYAZAKI