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公开(公告)号：US20190273440A1
公开(公告)日：2019-09-05
申请号：US16319857
申请日：2017-05-11
摘要： Provided is a power converter for converting a DC input voltage to a DC output voltage and outputting the DC output voltage to a load, including: a discharge resistor which discharges electric charges accumulated in the load, a discharge switch which switches an electric conduction state of the discharge resistor; and a discharge controller which controls the discharge switch so that the output voltage becomes a predetermined target voltage, wherein the discharge controller controls the discharge switch to cut off electric conduction of the discharge resistor when the output voltage is lower than a predetermined threshold voltage that is higher than the target voltage, and wherein the discharge controller corrects the threshold voltage in response to a temperature change of the load.
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公开(公告)号：US20200300926A1
公开(公告)日：2020-09-24
申请号：US16756014
申请日：2018-10-03
发明人： Daisuke IKARASHI , Kenji KUBO , Michihiro ASANUMA
摘要： Provided are a reliable high-voltage system and a failure diagnosis method thereof, in which a vibration damping mechanism using an electrorheological fluid as a working fluid is a load, and can prevent electric shock due to leakage current and the influence on surrounding electronic devices. There are provided a first circuit that includes a power source and a ground, a second circuit that is magnetically coupled to the first circuit via a transformer and includes a load connected to the ground, a controller that is connected to the ground, a third circuit that is connected to the second circuit and the ground, a first resistor that is provided between a connection point at a high potential end of the second circuit and the ground, and a second resistor that is provided between a connection point at a low potential end of the second circuit and the ground, and has a resistance value different from a resistance value of the first resistor.
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