Modeling And Design Of Scenery Complementary Lighting System That Suitabled For Hunan

Wind and solar energy have drawn increasing attention as the important research area ofthe new energy technology application. Being a two-oriented society, Hunan Province shouldmake full use of clean energy such as wind and solar energy. Extensive use of wind and solarcomplementary lighting system should be the development direction of urban energy-efficientlighting and it has a very broad prospect. Because of the climatic characteristics and the relativelack of wind and solar energy in Hunan Province, the wind and solar complementary lightingsystem has different characteristics and requirements. Therefore, developing wind and solarcomplementary lighting system suited to the Hunan Province is very necessary and it has a veryhigh value in engineering applications.This paper has done much research on the structure, the composition and the principle ofwind and solar complementary lighting systems. It has designed a new control system and anew control algorithm according to the characteristics of Hunan Province, overcoming theshortcomings of low energy use efficiency of the traditional wind and solar complementarylighting systems, and it can meet the demand of the longest number of days without wind orlight in Hunan Province.Based on the proposed system above, this paper mainly consists of four parts:(1) Apply speed control and pitch angle control algorithm of large wind turbine to thewind and solar complementary lighting system, in order to overcome the shortcomings that thefixed pitch wind turbines’ startup wind speed is high and wind turbines will stall when theirwind speed is above the rated wind speed. Confirm the conclusion by doing contrast simulationof fixed pitch angle control algorithm and variable pitch angle control algorithm.(2) Study the maximum power point tracking algorithm in the section of PV powergeneration of the scenery complementary lighting system. Propose the constant voltage startwith variable step perturbation algorithm，and compare it with the fixed step perturbation andobservation method by doing simulation. The results show that the algorithm proposed in thispaper could also ensure the tracking speed and its accuracy, and it has improved the efficiencyof the utilization of light energy.(3) Allocate the capacity of the wind and solar complementary lighting system rationallyaccording to the characteristics of wind and solar energy resources in Hunan Province.(4) Design the hardware circuit and control software of photovoltaic maximum powerpoint tracking control which takes the DSP control chip TMS320F2812as the core. Establish corresponding experimental platformto do the experimental verification on the perturbation andobservation method which is used to realize the maximum power point tracking.