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    Humidification control during shutdown of a fuel cell system
    2.
    发明授权
    Humidification control during shutdown of a fuel cell system 有权
    燃料电池系统停机时的加湿控制

    公开(公告)号：US08168343B2

    公开(公告)日：2012-05-01

    申请号：US12184776

    申请日：2008-08-01

    申请人： Bruce J. Clingerman ,  Steven D. Burch ,  John P. Salvador ,  Manish Sinha

    发明人： Bruce J. Clingerman ,  Steven D. Burch ,  John P. Salvador ,  Manish Sinha

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04231 ,  H01M8/04126 ,  H01M8/04634

    摘要： A process for controlling the length of a purge and the purge rate of a fuel cell stack at system shut-down so as to provide the desired amount of stack humidity. The membrane humidification is measured at system shut-down by a high frequency resistance sensor that detects membrane humidification and provides the measurement to a controller. The controller controls the compressor that provides cathode input air to the fuel cell stack so that the time of the purge and the flow rate of the purge provide a desired membrane humidity for the next start-up.

    摘要翻译： 用于在系统关闭时控制净化长度和燃料电池堆的吹扫速率以提供所需量的堆积湿度的方法。 通过检测膜加湿的高频电阻传感器在系统关闭时测量膜加湿，并向控制器提供测量。 控制器控制向燃料电池堆提供阴极输入空气的压缩机，使得净化时间和吹扫流量为下次启动提供期望的膜湿度。

    HUMIDIFICATION CONTROL DURING SHUTDOWN OF A FUEL CELL SYSTEM
    3.
    发明申请
    HUMIDIFICATION CONTROL DURING SHUTDOWN OF A FUEL CELL SYSTEM 有权
    燃料电池系统关闭期间的湿度控制

    公开(公告)号：US20100028728A1

    公开(公告)日：2010-02-04

    申请号：US12184776

    申请日：2008-08-01

    申请人： Bruce J. Clingerman ,  Steven D. Burch ,  John P. Salvador ,  Manish Sinha

    发明人： Bruce J. Clingerman ,  Steven D. Burch ,  John P. Salvador ,  Manish Sinha

    IPC分类号： H01M8/00 ,  H01M8/04

    CPC分类号： H01M8/04231 ,  H01M8/04126 ,  H01M8/04634

    摘要： A process for controlling the length of a purge and the purge rate of a fuel cell stack at system shut-down so as to provide the desired amount of stack humidity. The membrane humidification is measured at system shut-down by a high frequency resistance sensor that detects membrane humidification and provides the measurement to a controller. The controller controls the compressor that provides cathode input air to the fuel cell stack so that the time of the purge and the flow rate of the purge provide a desired membrane humidity for the next start-up.

    摘要翻译： 用于在系统关闭时控制净化长度和燃料电池堆的吹扫速率以提供所需量的堆积湿度的方法。 通过检测膜加湿的高频电阻传感器在系统关闭时测量膜加湿，并向控制器提供测量。 控制器控制向燃料电池堆提供阴极输入空气的压缩机，使得清洗时间和吹扫流量为下一次启动提供期望的膜湿度。

    Adaptive Gain Scheduled Control for Current Limitation Based on Voltage Performance of a Fuel Cell System
    6.
    发明申请
    Adaptive Gain Scheduled Control for Current Limitation Based on Voltage Performance of a Fuel Cell System 有权
    基于燃料电池系统电压性能的电流限制的自适应增益调度控制

    公开(公告)号：US20090197126A1

    公开(公告)日：2009-08-06

    申请号：US12027049

    申请日：2008-02-06

    申请人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    发明人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M8/04992

    摘要： A system and method for limiting the output current of a fuel cell stack as the stack degrades overtime. A look-up table identifies a predetermined voltage set-point for stack current density. A first comparator provides a voltage difference signal between the set-point and the stack voltage. The voltage difference signal is provided to a controller, such as a proportional-integral controller, that provides a current limiting signal. The current limiting signal and a current request signal are provided to a second comparator that selects which signal will be used to limit the maximum output current of the stack. A polarization curve estimator estimates parameters of the stack that will change over the life of the stack. The parameters are provided to a gain scheduler that provides gains to the controller that are based on where in the life of the stack it is currently operating.

    摘要翻译： 一种用于限制燃料电池堆的输出电流的系统和方法，因为堆叠降低了加班时间。 查找表识别堆电流密度的预定电压设定点。 第一比较器在设定点和堆叠电压之间提供电压差信号。 电压差信号被提供给提供限流信号的控制器，例如比例积分控制器。 电流限制信号和当前请求信号被提供给第二比较器，第二比较器选择哪个信号将用于限制堆叠的最大输出电流。 极化曲线估计器估计将在堆栈的寿命内改变的堆栈的参数。 这些参数被提供给增益调度器，其为控制器提供增益，其基于其当前正在操作的堆栈的寿命。

    Adaptive gain scheduled control for current limitation based on voltage performance of a fuel cell system
    7.
    发明授权
    Adaptive gain scheduled control for current limitation based on voltage performance of a fuel cell system 有权
    基于燃料电池系统的电压性能的电流限制的自适应增益调度控制

    公开(公告)号：US07955743B2

    公开(公告)日：2011-06-07

    申请号：US12027049

    申请日：2008-02-06

    申请人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    发明人： Sriram Ganapathy ,  David A. Arthur ,  Manish Sinha ,  John P. Salvador ,  David R. Savage ,  Frank X. Leo

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04649 ,  H01M8/04559 ,  H01M8/04589 ,  H01M8/0491 ,  H01M8/0494 ,  H01M8/04992

    摘要： A system and method for limiting the output current of a fuel cell stack as the stack degrades overtime. A look-up table identifies a predetermined voltage set-point for stack current density. A first comparator provides a voltage difference signal between the set-point and the stack voltage. The voltage difference signal is provided to a controller, such as a proportional-integral controller, that provides a current limiting signal. The current limiting signal and a current request signal are provided to a second comparator that selects which signal will be used to limit the maximum output current of the stack. A polarization curve estimator estimates parameters of the stack that will change over the life of the stack. The parameters are provided to a gain scheduler that provides gains to the controller that are based on where in the life of the stack it is currently operating.

    摘要翻译： 一种用于限制燃料电池堆的输出电流的系统和方法，因为堆叠降低了加班时间。 查找表识别堆电流密度的预定电压设定点。 第一比较器在设定点和堆叠电压之间提供电压差信号。 电压差信号被提供给提供限流信号的控制器，例如比例积分控制器。 电流限制信号和当前请求信号被提供给第二比较器，第二比较器选择哪个信号将用于限制堆叠的最大输出电流。 极化曲线估计器估计将在堆栈的寿命内改变的堆栈的参数。 这些参数被提供给增益调度器，其为控制器提供增益，其基于其当前正在操作的堆栈的寿命。

    ADAPTIVE METHOD FOR CONVERSION OF EXTERNAL POWER REQUEST TO CURRENT SETPOINT TO A FUEL CELL SYSTEM BASED ON STACK PERFORMANCE
    9.
    发明申请
    ADAPTIVE METHOD FOR CONVERSION OF EXTERNAL POWER REQUEST TO CURRENT SETPOINT TO A FUEL CELL SYSTEM BASED ON STACK PERFORMANCE 有权
    用于基于堆叠性能将外部电源转换为电流设定点的燃料电池系统的自适应方法

    公开(公告)号：US20110223505A1

    公开(公告)日：2011-09-15

    申请号：US12724262

    申请日：2010-03-15

    申请人： Sriram Ganapathy ,  Kiran Mallavarapu ,  Stefan W. Lixfeld ,  Manish Sinha

    发明人： Sriram Ganapathy ,  Kiran Mallavarapu ,  Stefan W. Lixfeld ,  Manish Sinha

    IPC分类号： H01M8/04

    CPC分类号： H01M8/04559 ,  H01M8/04589 ,  H01M8/04604 ,  H01M8/0491 ,  H01M8/04992 ,  H01M2008/1095 ,  Y02E60/50

    摘要： A system and method for converting a fuel cell stack power request signal to a stack current set-point that considers stack performance parameters. The method includes obtaining a power-current relationship curve of the fuel cell stack to provide stack parameters including exchange current density and mass transfer coefficient. The method then calculates a slope for the stack using the parameters from the power-current relationship curve estimation that includes calculating a cell voltage at two predetermined stack current densities. The method then calculates a change in current in response to the power request signal, the stack voltage, the stack current and the calculated slope, and uses the change in current to update the current set-point for the stack.

    摘要翻译： 一种用于将燃料电池堆功率请求信号转换为考虑堆栈性能参数的堆栈当前设定点的系统和方法。 该方法包括获得燃料电池堆的功率 - 电流关系曲线以提供包括交换电流密度和质量传递系数的堆叠参数。 该方法然后使用来自功率 - 电流关系曲线估计的参数来计算堆叠的斜率，其包括以两个预定的堆叠电流密度计算单元电压。 然后，该方法响应于功率请求信号，堆栈电压，堆栈电流和计算出的斜率来计算电流变化，并且使用电流变化来更新堆栈的当前设定点。