1997 Volume 117 Issue 5 Pages 731-736
Though Photovoltaic power generation (PV) and wind power generation (WG) have advantages that energy are clean and infinite, they have a disadvantage that electrical output energy are unstable. The disadvantage causes them to need big energy storage device such as a battery and to increase their construction cost. A PV/WG hybrid system is effective for stabilizing output in specific locations that yearly profile of solar energy is different from that of wind energy. However, as the stability has a relation to a ratio of PV output energy fluctuation to WG output energy fluctuation, it is very important to clear the optimum ratio. The optimum ratio from the point of view of long-term stability for the output energy was cleared by simple simulations. And it was cleared that the optimum ratio changes from approx. 20 to 75% according to environment and that optimizing the ratio can reduce the battery capacity very much.
The transactions of the Institute of Electrical Engineers of Japan.B
The Journal of the Institute of Electrical Engineers of Japan