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This paper presents the advanced control strategy and experimental study of a clean hybrid power system combining proton exchange membrane fuel cell (PEMFC), as the main power source, and ultra-capacitor (UC), as the energy storage unit.
In order to conquer uncertainty and disturbance, a reduced robust control strategy based on linear matrix inequality (LMI) was proposed for a proton exchange membrane fuel cell (PEMFC) system. And then the structure singular value (SSV) μ analysis method was utilized to testify the robust stability of proposed controller. The simulation results demonstrated that the control method could maintain the...
This paper presents a dynamic multi-input multi-output (MIMO) model of PEM fuel cells and a nonlinear control approach appropriate for this model based on exact linearization. Since large deviations of pressures between anode and cathode gases can cause severe membrane damage in fuel cells, it is necessary to design a corresponding controller so that the deviation can be kept as small as possible...
In order to control a proton exchange membrane fuel cell (PEMFC) system, a novel H∞ optimal control method with adaptive focusing particle swarm optimization (AFPSO) which had preferable ability of global search and search rate was proposed. The simulation results demonstrated that the method could maintain the pressure inside supply manifold, and guarantee stable operation of the system when the...
This paper presents a dynamical control of fuel cell and battery hybrid system to supply a suddenly changing load. Because of the voltage drop when PEM fuel cell current increases, in this hybrid system, the fuel cell is used to supply the rated power to the load, a Lithium battery will supply peak power that the load demands, meanwhile, the fuel cell will charge the battery when the battery voltage...
Proton exchange membrane (PEM) fuel cell uninterrupted power supply (UPS) has been getting much attention recently. Fuel cell UPS needs another bridge power to smooth from the utility to the fuel cell because the fuel cell stack takes a certain time to start up. Batteries play the role conventionally. Ultracapacitor has many advantages compared with batteries excepts a problem: ultracapacitor voltage...
In order to investigate the output characteristic of proton exchange membrane fuel cell (PEMFC) based on the electrical empirical, a novel dynamic model of PEMFC has been developed with Matlab/Simulink, which is distinct from the models have previously been published. By using a fuel cell test system in Fuel Cell Application Centre in Temasek Polytechnic, the transient electrical response of PEMFC...
This paper presents a clean power system combining fuel cell and ultracapacitor. The fuel cell, which acts as the primary power source, is used for the continuous load requirement. The ultracapacitor, which acts as the secondary power source, is used for the peak load requirement. A controller also is designed to determine and assign the power between the fuel cell, ultracapacitor and motor..and this...
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