公开(公告)号：US20170346118A1

公开(公告)日：2017-11-30

申请号：US15605227

申请日：2017-05-25

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Honggang WANG ,  Xiangdong KONG

IPC: H01M8/04992 ,  H01M8/04089 ,  H01M8/0438 ,  H01M8/04537

Abstract: A fuel cell system is disclosed, which includes an anode recirculation loop comprising a fuel cell stack for generating power, a flowmeter for measuring a fuel flow rate of a fuel provided into the anode recirculation loop, a current measuring device for measuring a current drawn from the fuel cell stack, a recycle ratio measuring device for measuring a recycle ratio in the anode recirculation loop, and a processor for estimating a fuel utilization of the fuel cell stack based on the measured fuel flow rate, the measured current and the measured recycle ratio. Methods for operating the fuel cell system are also disclosed.

公开(公告)号：US20180145351A1

公开(公告)日：2018-05-24

申请号：US15795084

申请日：2017-10-26

Applicant: General Electric Company

Inventor： Honggang WANG ,  Xiangdong KONG ,  Andrew Philip SHAPIRO ,  Patrick CARROLL ,  John Guido PICCIRILLO

IPC: H01M8/04089 ,  H01M8/04537 ,  H01M8/04858 ,  H01M8/04746 ,  H01M8/04303

CPC classification number: H01M8/04097 ,  H01M8/04104 ,  H01M8/04303 ,  H01M8/04559 ,  H01M8/04753 ,  H01M8/04843 ,  H01M8/0491 ,  H01M8/0618

Abstract: A fuel cell system is disclosed, which includes an anode recirculation loop including a fuel cell stack for generating power, a fuel supply device for providing a fuel to the anode recirculation loop, an air supply device for providing air to a cathode of the fuel cell stack, a voltage monitoring device for monitoring a voltage of the fuel cell stack, and an anode protection controller. The anode protection controller decreases a current drawn from the fuel cell stack by a predetermined amount whenever the voltage of the fuel cell stack drops below a predetermined voltage threshold and decreases a fuel flowrate provided to the anode recirculation loop based on the decreased current, so as to maintain a steam to carbon ratio in the anode recirculation loop above a predetermined steam to carbon ratio limit. A shutdown method for the fuel cell system are also disclosed.

公开(公告)号：US20170179503A1

公开(公告)日：2017-06-22

申请号：US15379342

申请日：2016-12-14

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Honggang WANG ,  Andrew Philip SHAPIRO ,  Patrick Hammel HART ,  Xiangdong KONG ,  Ralph TEICHMANN

IPC: H01M8/04089 ,  H01M8/0432 ,  H01M8/0438 ,  H01M8/24 ,  H01M8/0444 ,  H01M8/04746 ,  H01M8/04992 ,  H01M8/0612 ,  H01M8/04537

CPC classification number: H01M8/04097 ,  H01M8/04328 ,  H01M8/04373 ,  H01M8/0438 ,  H01M8/04388 ,  H01M8/04447 ,  H01M8/04462 ,  H01M8/045 ,  H01M8/04514 ,  H01M8/04574 ,  H01M8/04589 ,  H01M8/04753 ,  H01M8/0491 ,  H01M8/04992 ,  H01M8/0612 ,  H01M8/0618 ,  H01M8/0637 ,  H01M8/24 ,  H01M2008/1293 ,  H01M2250/10 ,  Y02B90/14 ,  Y02E60/566

Abstract: A fuel cell system is disclosed, which includes an anode recirculation loop having a fuel cell stack for generating power, a flowmeter, a current sensor and a processor. The flowmeter is configured for measuring a fuel flow rate provided into the anode recirculation loop. The current sensor is configured for measuring a current drawn from the fuel cell stack. The processor is configured for determining a steam to carbon ratio in the anode recirculation loop based on the measured fuel flow rate and the measured current. The fuel cell system further includes a temperature sensor for measuring a temperature in the anode recirculation loop. The process is configured for determining the steam to carbon ration further based on the measured temperature. A method for operating the fuel cell system and a fuel cell power plant are also disclosed.