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公开(公告)号：US20160294290A1
公开(公告)日：2016-10-06
申请号：US14777593
申请日：2014-03-11
Inventor： Hideki TAMURA , Kazunori KIDERA , Jin YOSHIZAWA
CPC classification number: H02M3/33507 , H02M1/08 , H02M3/1582 , H02M3/33584 , H02M2001/0009 , H02M2001/007
Abstract: A power converter 1 includes a first conversion circuit 10 connected with a first winding n1 of a transformer 40, and a second conversion circuit 20 connected with a second winding n2 of the transformer 40. The first and second conversion circuits 10 and 20 are configured to perform bidirectional power conversion. The power converter further includes a third conversion circuit 30 that is a circuit provided at a pre-stage of the first conversion circuit 10 in a direction of transferring electric power toward the second conversion circuit 20 from the first conversion circuit 10. The third conversion circuit 30 is configured to perform bidirectional power conversion, and function as a boosting chopper circuit upon transferring electric power toward the second conversion circuit 20 from the first conversion circuit 10.
Abstract translation: 功率转换器1包括与变压器40的第一绕组n1连接的第一转换电路10和与变压器40的第二绕组n2连接的第二转换电路20.第一和第二转换电路10和20被配置为 执行双向电源转换。 电力转换器还包括第三转换电路30，其是在第一转换电路10的前级沿着从第一转换电路10向第二转换电路20传送电力的方向上设置的电路。第三转换电路 30被配置为执行双向电力转换，并且在从第一转换电路10向第二转换电路20传送电力时用作升压斩波电路。
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公开(公告)号：US20250130304A1
公开(公告)日：2025-04-24
申请号：US18681471
申请日：2022-08-24
Inventor： Tatsuo KOGA , Jin YOSHIZAWA , Kazuto URA
Abstract: A position estimation system includes: an obtainer that obtains image information of an image showing an indoor space in which a person is located; an estimator that estimates the coordinates of the person in the indoor space, on the basis of the image information obtained; and a position information obtainer that obtains position information of a first communication device from a positioning system. The estimator estimates the coordinates of a target first communication device held by the person, based on the coordinates of the person estimated and the position information obtained, and estimates the coordinates of an object other than the person in the indoor space, on the basis of a state of communication between a third communication device held by the object and the target first communication device, and the coordinates of the target first communication device estimated.
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公开(公告)号：US20210175711A1
公开(公告)日：2021-06-10
申请号：US16071093
申请日：2017-03-06
Inventor： Jin YOSHIZAWA , Kenichi WATANABE , Toshifumi ISE , Jia LIU
Abstract: A power supply system includes: a synchronous generator connected to a three-phase power distribution system that is connected to a consumer load; an inverter that is connected to the power distribution system, supplies power to the consumer load, and compensates for unbalanced current of the synchronous generator; and a control device that generates a gate command for controlling the inverter. The control device: generates, based on a three-phase voltage and current output from the inverter, a target output voltage which is an amplitude of a vector in a complex plane combining voltages of three phases, and a target output phase which is a phase of the vector in the complex plane combining the voltages of three phases; generates a first compensation voltage, based on a current negative-phase-sequence component relating to the synchronous generator; and generates a gate command from the generated values.
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公开(公告)号：US20210031874A1
公开(公告)日：2021-02-04
申请号：US16967981
申请日：2019-03-05
Inventor： Jin YOSHIZAWA , Kazuaki HASHIMOTO , Takashi UCHIDA
Abstract: A bicycle motorization device is attached to a bicycle. The motorization device includes: a calculation unit configured to calculate speed of the bicycle; an estimation unit configured to estimate pedal force applied to pedals of the bicycle; an electric motor; a battery which supplies electric power to the electric motor; and a control unit configured to apply auxiliary driving force to a wheel of the bicycle by driving the electric motor based on the speed calculated and the pedal force estimated.
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公开(公告)号：US20160087549A1
公开(公告)日：2016-03-24
申请号：US14787331
申请日：2014-04-23
Inventor： Hideki TAMURA , Kazunori KIDERA , Jin YOSHIZAWA
CPC classification number: H02M7/797 , H02J3/383 , H02J5/00 , H02M1/36 , H02M7/125 , H02M7/48 , H02M2001/007
Abstract: A power conditioner includes first and second power conversion portions, a smoothing capacitor, and an auxiliary power supply. The first power conversion portion is connected to a DC system. The second power conversion portion is connected to an AC system. The capacitor is connected between wires of an intermediate bus which connects input/output terminals of the first power conversion portion and the second power conversion portion. The auxiliary power supply receives commercial power and generates an auxiliary charge voltage to be applied to the capacitor. The first power conversion portion converts DC power of the storage battery to a first DC voltage and outputs the first DC voltage to the intermediate bus. The second power conversion portion converts a voltage of the capacitor to an AC voltage and outputs the AC voltage to the AC system. The auxiliary charge voltage is lower than the first DC voltage.
Abstract translation: 功率调节器包括第一和第二功率转换部分，平滑电容器和辅助电源。 第一电力转换部分连接到DC系统。 第二电力转换部分连接到AC系统。 电容器连接在连接第一电力转换部分的输入/输出端子和第二电力转换部分的中间总线的导线之间。 辅助电源接收商用电力，并产生要施加到电容器的辅助充电电压。 第一电力转换部将蓄电池的直流电力转换为第一直流电压，并将第一直流电压输出到中间总线。 第二电力转换部分将电容器的电压转换成AC电压，并将AC电压输出到AC系统。 辅助充电电压低于第一直流电压。
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Patent Agency Ranking
公开(公告)号：US20160082855A1
公开(公告)日：2016-03-24
申请号：US14785625
申请日：2014-04-17
Inventor： Jin YOSHIZAWA
CPC classification number: B60L11/1842 , B60L3/0069 , B60L53/14 , B60L53/16 , B60L53/18 , B60L53/665 , B60L55/00 , B60L58/30 , G01R19/15 , H02J13/0006 , Y02E60/721 , Y02T10/7088 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/163 , Y02T90/169 , Y02T90/34 , Y04S10/126 , Y04S30/14
Abstract: A switch exists between first and second terminals provided for the connector, and is configured to be in ON when the connector is in connection to the inlet, and to be in OFF when the connector is in separation. A first power supply is connected to an electrical circuit including the first and second terminals, and configured to supply electrical power during ON period of the switch. A judgement circuit is configured to monitor an electrical state of at least one of the first and second terminals and output a monitor signal showing a judgment result of ON or OFF of the switch.
Abstract translation: 在为连接器设置的第一和第二端子之间存在开关，并且当连接器与入口连接时被配置为处于开启状态，并且当连接器处于分离状态时处于断开状态。 第一电源连接到包括第一和第二端子的电路，并且被配置为在开关的接通时段期间提供电力。 判定电路被配置为监视第一和第二端子中的至少一个的电气状态，并输出表示开关的ON或OFF的判定结果的监视信号。
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公开(公告)号：US20240377498A1
公开(公告)日：2024-11-14
申请号：US18293178
申请日：2022-07-21
Inventor： Tatsuo KOGA , Kazuto URA , Jin YOSHIZAWA
Abstract: A position estimation system includes: an obtainer that obtains image information of an image showing an indoor space in which a target object is located; an estimator that estimates coordinates of the target object in the indoor space, based on the image information obtained; a position information obtainer that obtains target position information that is position information of the target object from a positioning system; and a controller that stores identification information of the target object in association with the coordinates estimated, the identification information being included in the target position information obtained.
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公开(公告)号：US20240295338A1
公开(公告)日：2024-09-05
申请号：US18573468
申请日：2022-06-17
Inventor： Tatsuo KOGA , Jin YOSHIZAWA , Kazuto URA
IPC: F24F11/72 , F24F120/14 , G06V40/20
CPC classification number: F24F11/72 , G06V40/25 , F24F2120/14
Abstract: An airflow control system (10) includes: an obtainer (34) that obtains image data of an interior space (50) in which an airflow is formed by an airflow generation device (40) and a person is located; an identifier (35) that identifies skeletal coordinates of the person based on the image data obtained; an estimator (36) that estimates a movement of the person based on time-series data of the skeletal coordinates identified; and a controller (37) that controls the airflow generation device (40) to suppress a disturbance of the airflow caused by the movement of the person estimated.
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公开(公告)号：US20240087433A1
公开(公告)日：2024-03-14
申请号：US18262119
申请日：2022-01-22
Inventor： Takanori AKETA , Kenichiro TANAKA , Jin YOSHIZAWA , Shingo NAGATOMO , Kazuki KITAMURA , Tatsuya TAKAHASHI , Tatsuo KOGA , Tomonori YAMADA , Kazuto URA
IPC: G08B5/36 , G01C21/20 , G05D1/02 , H05B45/20 , H05B47/105 , H05B47/155
CPC classification number: G08B5/36 , G01C21/206 , G05D1/0214 , H05B45/20 , H05B47/105 , H05B47/155 , G08G1/123
Abstract: A lighting system includes a plurality of lighting devices and a control device. The plurality of lighting devices are installed in a facility. The control device controls the plurality of lighting devices. The control device controls lighting light projected by at least one lighting device, belonging to the plurality of lighting devices, into colored lighting light, of which a color is different from a color white, to give, upon acquiring information about an event in question, a sign depending on the event in question.
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公开(公告)号：US20210033285A1
公开(公告)日：2021-02-04
申请号：US16967982
申请日：2019-03-11
Inventor： Jin YOSHIZAWA , Kazuaki HASHIMOTO , Takashi UCHIDA
Abstract: An electric bicycle includes: an electric motor; a storage unit in which control software for controlling the electric motor is stored; a control unit configured to run the control software stored in the storage unit; and a communication interface unit to which a piece of hardware is removably and communicably connected. The control unit is configured to run an other piece of software different from the control software to control the piece of hardware which is communicably connected to the communication interface unit. The other piece of software is installed in the storage unit. Each of the control software and the other piece of software communicates using a distributed-communication protocol.
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