The interaction between photosynthetic microorganisms and an inert electrode material was examined. Cathodic polarization values of platinum-bearing marine algae were obtained over a wide current-density range under both illumination and dark conditions. A potential shift of 0.6 v in the cathodic direction occurred upon illumination at a current density of 4.3 mua/cm(2). Similar photo-induced r...

Ocean wave energy is sustainable and renewable energy, conversion (WEC) effectively solves the disadvantage of traditional power system with fossil energy. WEC generation process that converts kinetic undulation swing into electric direct-drive (D-DWEC) directly by linear generator to improve efficiency. At present, research has characteristic interdisciplinary, multi-system integration, engine...

A method for digital direct power control design grid-connected energy conversion systems was proposed in this paper. The active and reactive powers are directly controlled with constant switching frequency by selecting an appropriate sequence of voltage source converter as a key part systems. combines discrete-time sliding mode predictive control. selection feasible vectors is result the appro...

energy—enough to power the great oceanic and atmospheric currents, the cycle of evaporation and condensation that brings fresh water inland and drives river flow, and the typhoons, hurricanes, and tornadoes that so easily destroy the natural and built landscape. The San Francisco earthquake of 1906, with magnitude 7.8, released an estimated 1017 joules of energy, the amount the Sun delivers to ...