Oscar D. Crisalle,Mohammad A. R. Biswas,Shyam Prasad Mudiraj,William E. Lear, Jr.
申请号：
US14771583
公开号：
US10211470B2
申请日:
2014.03.11
申请国别(地区):
US
年份:
2019
代理人:
摘要：
Various examples are provided for operational control of fuel cells. In one example, among others, a system for controlling a fuel cell includes a stack temperature controller in cascade with a liquid level controller. The liquid level controller can provide a control output based at least in part upon an indication of a liquid level of a liquid fuel tank and a level reference. The stack temperature controller can provide a fan speed control output based at least in part upon an indication of a stack temperature of the fuel cell and the control output of the liquid level controller. In another example, a system for estimating methanol concentration of a fuel cell system includes a state observer that generates an estimate of the methanol concentration of fuel provided to a direct methanol fuel cell based upon a plurality of states of the fuel cell system.
