Tracking the maximum efficiency point for the FC system based on extremum seeking scheme to control the air flow

被引：32

作者：

Bizon, Nicu ^{[1
,2
]}

机构：

[1] Univ Pitesti, Pitesti 110040, Romania

[2] Univ Politehn Bucuresti, Bucharest 060042, Romania

来源：

APPLIED ENERGY | 2014年 / 129卷

关键词：

Fuel cell system; Energy efficiency; Maximum efficiency point tracking; Extremum seeking algorithm; Air compressor control; OXYGEN EXCESS RATIO; FUEL-CELL SYSTEMS; POWER MANAGEMENT; ADAPTIVE-CONTROL; STRATEGY; FEEDBACK; PEMFC;

D O I：

10.1016/j.apenergy.2014.05.002

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

An advanced control of the air compressor for the Proton Exchange Membrane Fuel Cell (PEMFC) system is proposed in this paper based on Extremum Seeking (ES) control scheme. The FC net power is mainly depended on the air and hydrogen flow rate and pressure, and heat and water management. This paper proposes to compute the optimal value for the air flow rate based on the advanced ES control scheme in order to maximize the FC net power. In this way, the Maximum Efficiency Point (MEP) will be tracked in real time, with about 10 kW/s search speed and a stationary accuracy of 0.99. Thus, energy efficiency will be close to the maximum value that can be obtained for a given PEMFC stack and compressor group under dynamic load. It is shown that the MEP tracking allows an increasing of the FC net power with 3-12%, depending on the percentage of the FC power supplied to the compressor and the level of the load power. Simulations shows that the performances mentioned above are effective. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：147 / 157

页数：11

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