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Control algorithm of renewable energy power plant supplied by fuel cell/solar cell/ supercapacitor power source

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4 Author(s)
Thounthong, P. ; Dept. of Teacher Training in Electr. Eng., King Mongkut''s Univ. of Technol. North Bangkok, Bangkok, Thailand ; Sikkabut, S. ; Sethakul, P. ; Davat, B.

A renewable energy hybrid power plant, fed by photovoltaic (PV) and fuel cell (FC) sources with a supercapacitor storage device and suitable for distributed generation applications, is proposed herein. The PV is used as the main generator; the FC acts as a power source, feeding only the insufficiency power (steady-state) from the PV; and the supercapacitor functions as an auxiliary source for supplying the deficiency power (transient and steady-state) from the PV and the FC. Using the nonlinear approach based on the flatness property, we propose a simple solution to the dynamics, optimization, stabilization, and robustness problems in the hybrid power system. This is the key innovative contribution of this research paper. The prototype small-scale power plant studied was composed of a PEMFC system (1.2 kW), a PV array (0.8 kW), and a supercapacitor module (100 F). Experimental results in laboratory authenticate the excellent control algorithm during load cycles.

Published in:

Power Electronics Conference (IPEC), 2010 International

Date of Conference:

21-24 June 2010