|Design of Double Loop CDM Controllers for Proton Exchange Membrane Fuel Cell Fed DC-DC Boost Converter Under Wide Source and Load Variations
Heena Mishra, Shashwati Ray*, and Tata Venkat Dixit
International Journal of Control, Automation, and Systems, vol. 19, no. 5, pp.1873-1881, 2021
Abstract : Proton Exchange Membrane Fuel Cell (PEMFC) are emerging as the new renewable energy source. The output voltage of PEMFC is not sufficient to fulfill the load demands which varies with variations in temperature and load. So, it is integrated with a properly designed power conditioning unit to enhance and stabilize the voltage. In this paper Nexa 1.2 KW PEMFC is initially modeled using successive trust region. Next, a DC-DC boost converter connected to the fuel cell is designed using interval analysis to boost and regulate the output voltage adhering to the changes in the temperature and loading conditions. To stabilize the output of PEMFC fed boost converter, double loop robust controllers are implemented which are designed by Coefficient Diagram Method (CDM). All the responses of the CDM controlled boost converter settle down smoothly at the desired settling time with zero overshoot. The proposed controller fair quite well as compared to other similar controllers in the existing literatures.
Boost converter, double loop CDM controllers, interval mathematics, PEMFC, stabilized output voltage.
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