@article {17, title = {New concept in maximum power tracking for the control of a photovoltaic/hydrogen system}, journal = {International Journal of Hydrogen Energy}, volume = {37}, year = {2012}, pages = {14951 - 14958}, abstract = {

For the sustainable production of clean H2, it is essential to optimize the capture and conversion of renewable energy. In this context, this paper presents a new technique to maximize the efficiency of a photovoltaic conversion system supplying an electrolyzer. Simple, efficient and low cost maximum power point tracking algorithms to optimize energy production are proposed for the three DC/DC electronic converter topologies typically used in photovoltaic and H2 applications. The method is based on energy balance concepts and exhibits certain analogies with maximum power tracking algorithms extensively used in wind turbines that do not require measurement of the primary energy source. The algorithm provides a reference to the current controller only requiring measurement of electrical variables and solar array temperature. The current controller is implemented using sliding mode strategies. Experimental and simulation results are provided showing the effectiveness and simplicity of the proposed method.

}, keywords = {Hydrogen production}, issn = {0360-3199}, doi = {10.1016/j.ijhydene.2012.01.176}, url = {http://www.sciencedirect.com/science/article/pii/S0360319912003217}, author = {Inthamoussou, Fernando A. and De Battista, Hern{\'a}n and Mantz, Ricardo J.} } @article {94, title = {Control design for an autonomous wind based hydrogen production system}, journal = {International Journal of Hydrogen Energy}, volume = {35}, year = {2010}, pages = {5799 - 5807}, abstract = {

This paper presents a complete control scheme to efficiently manage the operation of an autonomous wind based hydrogen production system. This system comprises a wind energy generation module based on a multipolar permanent magnet synchronous generator, a lead-acid battery bank as short term energy storage and an alkaline von Hoerner electrolyzer. The control is developed in two hierarchical levels. The higher control level or supervisor control determines the general operation strategy for the whole system according to the wind conditions and the state of charge of the battery bank. On the other hand, the lower control level includes the individual controllers that regulate the respective module operation assuming the set-points determined by the supervisor control. These last controllers are approached using second-order super-twisting sliding mode techniques. The performance of the closed-loop system is assessed through representative computer simulations.

}, keywords = {Hydrogen production}, issn = {0360-3199}, doi = {http://dx.doi.org/10.1016/j.ijhydene.2010.02.096}, url = {http://www.sciencedirect.com/science/article/pii/S0360319910003964}, author = {Valenciaga, Fernando and Evangelista, Carolina A.} } @article {53, title = {Hydrogen production from idle generation capacity of wind turbines}, journal = {International Journal of Hydrogen Energy}, volume = {33}, year = {2008}, pages = {4291 - 4300}, abstract = {

This paper is concerned with the hydrogen production from wind energy. It is motivated by the new regulations for wind farms that compel them to operate normally with idle generation capacity. The idea is to use the excess wind power to produce hydrogen. The operation of a proposed system configuration, which essentially consists in incorporating an electrolyzer between the electronic converters of a conventional wind turbine, is analyzed. In particular, the control requirements to simultaneously achieve the grid and electrolyzer specifications are investigated. In this context, a control strategy for the different operating modes of the system is developed.

}, keywords = {Hydrogen production}, issn = {0360-3199}, doi = {http://dx.doi.org/10.1016/j.ijhydene.2008.05.088}, url = {http://www.sciencedirect.com/science/article/pii/S0360319908006800}, author = {Mantz, Ricardo J. and De Battista, Hern{\'a}n} }