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公开(公告)号：US20240063730A1
公开(公告)日：2024-02-22
申请号：US18270488
申请日：2021-02-25
发明人： Kenji FUJIWARA , Yusuke SHIROUCHI
摘要： Provided are a sub inverter of a full-bridge constituted by two arms: an arm and an arm, each of which is mounted on a different module, a main controller to drive and control the sub inverter by switching an operation mode between a first mode in which a first arm performs a low-frequency switching operation and a second arm performs a high-frequency switching operation, and a second mode in which the second arm performs a low-frequency switching operation and the first arm performs a high-frequency switching operation, and an operation ratio setting circuitry to set an operation ratio on the basis of a bias of a temperature rise between the modules.
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公开(公告)号：US20240356460A1
公开(公告)日：2024-10-24
申请号：US18683512
申请日：2021-09-03
发明人： Yusuke SHIROUCHI , Ryota ASAKURA , Kenji FUJIWARA
CPC分类号： H02M7/5395 , H02M1/0095 , H02M1/123 , H02M1/385 , H02M1/44 , H02M7/4835
摘要： A power conversion device which converts power from a power supply and supplies the converted power to a load, includes: a first inverter including first capacitors and a plurality of switching elements; a second inverter including a plurality of switching elements, and second capacitors to which voltages smaller than voltages of the first capacitors are applied; and a control device. The control device performs control with dead times applied to the plurality of switching elements, and performs control so that a voltage variation width of combined voltage of output voltage of the first inverter and output voltage of the second inverter during a dead time period is reduced.
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公开(公告)号：US20230216431A1
公开(公告)日：2023-07-06
申请号：US18008695
申请日：2020-09-09
IPC分类号： H02M7/5387 , B64D47/00 , B60L53/20
CPC分类号： H02M7/53871 , B64D47/00 , B60L53/20 , B64D2221/00 , B60L2200/10
摘要： A power conversion device is provided between a power supply and a load, and converts power from the power supply and supplies the converted power to the load. The power conversion device includes a plurality of switching elements composed of semiconductor elements, and a control device which generates drive signals for controlling the plurality of switching elements. Voltages are respectively applied to the plurality of semiconductor elements, on the basis of the drive signals generated by the control device. The plurality of semiconductor elements have equivalent failure probabilities due to neutron beams. Thus, a failure of the power conversion device due to neutron beams is prevented, and size increase thereof is suppressed.
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