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1.发明申请公开(公告)号：US20220278622A1
公开(公告)日：2022-09-01
申请号：US17631838
申请日：2020-07-29
Inventor： Taiki NISHIMOTO , Noriaki TAKEDA , Naoki SAWADA
Abstract: A power conversion apparatus is provided with a transformer, a primary circuit, and a secondary circuit. The primary circuit is connected to a primary winding of the transformer, has a primary positive bus and a primary negative bus, and includes at least one switching element. The secondary circuit is connected to a secondary winding of the transformer, has a secondary positive bus and a secondary negative bus, and includes at least one switching element. The power conversion apparatus is further provided with a coupling circuit including at least a first capacitor. The power conversion apparatus is configured such that the primary circuit is an unbalanced circuit and the secondary circuit is a balanced circuit, and having the coupling circuit connected between a center tap of the secondary winding of the transformer, and one of the primary positive bus and the primary negative bus.
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公开(公告)号：US20220270816A1
公开(公告)日：2022-08-25
申请号：US17442955
申请日：2020-02-12
Inventor： Noriaki TAKEDA , Taiki NISHIMOTO , Naoki SAWADA
Abstract: A core (X1) has a shape of a rectangular loop having sides (A1 to A4). The sides (A1, A3) are opposed to each other. The sides (A2, A4) are opposed to each other. A winding (w11) is wound around the core (X1) on the side (A2). A winding (w12) is wound around the core (X1) on the side (A4). A winding (w21) is wound around the core (X1) on the side (A2). A winding (w22) is wound around the core (X1) on the side (A4). The windings (w11, w12) are wound around the core (X1) at equal distances from the side (A1). The windings (w21, w22) are wound around the core (X1) at equal distances from the side (A1). The windings (w11, w12) are connected in series or in parallel to each other. The windings (w21, w22) are connected in series or in parallel to each other.
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公开(公告)号：US20200014215A1
公开(公告)日：2020-01-09
申请号：US16490498
申请日：2018-02-26
Inventor： Motohiko FUJIMURA , Masahiro YAMAOKA , Atsushi YAMAMOTO , Taiki NISHIMOTO
Abstract: A code modulator comprises: a first filter circuit connected between a pair of input ports, a second filter circuit connected between a pair of output ports, and a third filter circuit connected in parallel to each of switch circuits. A code demodulator comprises: a fourth filter circuit connected between a pair of input ports, a fifth filter circuit connected between a pair of output ports, and a sixth filter circuit connected in parallel to each of switch circuits.
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4.发明申请公开(公告)号：US20190165666A1
公开(公告)日：2019-05-30
申请号：US16321250
申请日：2017-07-28
Inventor： Taiki NISHIMOTO , Akira MINEGISHI , Atsushi YAMAMOTO , Masahiro YAMAOKA , Tohlu MATSUSHIMA , Osami WADA
Abstract: A switching circuit apparatus includes: a first capacitance provided between a first port terminal and a the first terminal of a switching circuit unit, a second capacitance provided between the first terminal and a conductor part, and a first inductance provided between a second port terminal and a second terminal of the switching circuit unit. The switching circuit apparatus is provided with: a first capacitor connected between the first port terminal and the second port terminal, and a second inductor connected between the second terminal and the conductor part. The second inductor has such an inductance that a ratio of the inductance of the second inductor to the first inductance is equal to a ratio of the first capacitance to the second capacitance.
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公开(公告)号：US20200014214A1
公开(公告)日：2020-01-09
申请号：US16490491
申请日：2018-02-26
Inventor： Taiki NISHIMOTO , Masahiro YAMAOKA , Atsushi YAMAMOTO , Motohiko FUJIMURA
IPC: H02J4/00
Abstract: A current meter measures a current value associated with input power inputted to a code modulator. A code modulation circuit modulates the input power to generate a code-modulated wave by code modulation using a modulation code based on a code sequence, and transmits the code-modulated wave to the code demodulator via a transmission path. A control circuit controls the code modulation circuit. The code modulation circuit has operation modes different from each other depending on a direction of the input power, and a direction of the code-modulated wave to be generated. The control circuit generates waveform information indicating variations of direction of the input power over time, based on the current value measured by the current meter, and determines the operation mode of the code modulation circuit based on the waveform information.
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Patent Agency Ranking
公开(公告)号：US20200014211A1
公开(公告)日：2020-01-09
申请号：US16490422
申请日：2018-02-26
Inventor： Masahiro YAMAOKA , Atsushi YAMAMOTO , Motohiko FUJIMURA , Taiki NISHIMOTO
Abstract: A code modulator transmits power to at least one code demodulator via a transmission path. The code modulator is provided with: a code modulation circuit to which output power of a power supply is supplied, the code modulation circuit modulating the output power of the power supply to generate a code-modulated wave by code modulation using a modulation code based on a code sequence, and transmitting the code-modulated wave to the code demodulator via the transmission path; and a control circuit that controls the code modulation circuit. The control circuit sets a frequency of the modulation code to a multiple of an output power frequency of the power supply.
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公开(公告)号：US20190356132A1
公开(公告)日：2019-11-21
申请号：US16476248
申请日：2017-12-25
Inventor： Motohiko FUJIMURA , Masahiro YAMAOKA , Atsushi YAMAMOTO , Taiki NISHIMOTO
Abstract: The power transmitter apparatus is provided with code modulators which modulate powers of phase components of three-phase alternating-current power to generate code-modulated waves, respectively, by code modulation using modulation codes based on code sequences different from each other, and transmits the code-modulated waves to the at least one power receiver apparatus via the transmission path. The power receiver apparatus is provided with code demodulators, each of which demodulates one code-modulated wave of the received code-modulated waves to generate code-demodulated power by code demodulation using a demodulation code based on a code sequence identical to the code sequence of the modulation code used for the code modulation of the one code-modulated wave, the code-demodulated power being generated as power of one of phase components of multiphase alternating-current power.
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公开(公告)号：US20220190876A1
公开(公告)日：2022-06-16
申请号：US17439754
申请日：2020-02-05
Inventor： Taiki NISHIMOTO
Abstract: A capacitive coupling circuit device is provided with a capacitive coupling circuit and a ground-side feedback circuit. The capacitive coupling circuit demodulates a modulated signal, which is obtained by modulating an input signal and transmitting a modulated input signal through a coupling capacitor. The ground-side feedback circuit is inserted between a first ground terminal on a signal input side of the capacitive coupling circuit and a second ground terminal on a signal output side of the capacitive coupling circuit. The ground-side feedback circuit is configured by connecting a second capacitor in series to a parallel circuit of a first capacitor and a first resistor. Alternatively, the ground-side feedback circuit may be configured by connecting the second capacitor and a third capacitor in series to both ends of the parallel circuit of the first capacitor and the first resistor, respectively.
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公开(公告)号：US20220166329A1
公开(公告)日：2022-05-26
申请号：US17441184
申请日：2020-02-14
Inventor： Akira KATO , Motohiko FUJIMURA , Kazuyuki SAKIYAMA , Takehiko YAMAKAWA , Taiki NISHIMOTO
Abstract: A power conversion device is equipped with at least one leg circuit containing two switching elements connected in series, respectively, a transformer having a primary winding and a secondary winding, a capacitor connected between the leg circuit and one end of the primary winding, a switch circuit, and a rectifier circuit. The switch circuit selectively connects one of a plurality of winding sections of the secondary winding that are different from each other to the rectifier circuit
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公开(公告)号：US20200067348A1
公开(公告)日：2020-02-27
申请号：US16467760
申请日：2017-12-07
Inventor： Atsushi YAMAMOTO , Motohiko FUJIMURA , Taiki NISHIMOTO , Masahiro YAMAOKA
Abstract: A power receiver apparatus receives a code-modulated wave from a power transmitter apparatus via a transmission path, the code-modulated wave including first power modulated by code modulation using a modulation code based on a code sequence. The power receiver apparatus is provided with a contactless connector and a code demodulator. The contactless connector is coupled to the transmission path without electrical contact with the transmission path, and receives the code-modulated wave from the power transmitter apparatus via the transmission path. The code demodulator demodulates the received code-modulated wave to generate second power by code demodulation using a demodulation code based on a code sequence identical to the code sequence of the modulation code used for the code modulation.
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