FUEL CELL SYSTEM AND METHOD FOR CONTROLLING POWER THEREOF

    公开(公告)号:US20230133894A1

    公开(公告)日:2023-05-04

    申请号:US17565814

    申请日:2021-12-30

    IPC分类号: H01M8/04858 H02J7/34

    摘要: A fuel cell system includes a first converter to convert power, which is output from a fuel cell stack or a battery, into power in a specific level, a second converter to convert power which is input to or output from the battery, a power relay assembly to control power flow between a super capacitor and the first converter, and a controller to control outputs of the first converter and the second converter, depending on a starting state or an operating state of the fuel cell system, and to control an operation of the power relay assembly.

    Fuel cell system and control method for fuel cell system

    公开(公告)号:US11637304B2

    公开(公告)日:2023-04-25

    申请号:US17236575

    申请日:2021-04-21

    摘要: The low efficiency power generation part of a control device is provided with an operating point setting part setting a target current and a target voltage defining an operating point of the fuel cell at the time of low efficiency power generation and a generated electric power control part making the generated electric power of the fuel cell increase and decrease at the time of low efficiency power generation by controlling the current of the fuel cell to the target current while making the flow rate of feed of oxidizing agent gas supplied to the fuel cell fluctuate so that the voltage of the fuel cell increases and decreases above and below the target voltage within a range where the charged and discharged electric powers of the rechargeable battery do not become larger than the allowable charged and discharged electric powers.

    System and method for controlling fuel cell

    公开(公告)号:US11631874B2

    公开(公告)日:2023-04-18

    申请号:US17411516

    申请日:2021-08-25

    摘要: Disclosed are a control system for a fuel cell including a fuel cell configured to receive a fuel gas and an oxidation gas and generate electric power, a current controller configured to control an output current output from the fuel cell, based on a demanded current of the fuel cell, while maintaining an output voltage output from the fuel cell at a preset voltage or more, and a restriction controller configured to estimate an output current at the preset voltage as a maximum current when the output voltage of the fuel cell drops to become equal to or smaller than the preset voltage, and restrict the output current of the fuel cell to not more than a first restriction current set based on the estimated maximum current, and a control method for a fuel cell.