Research On Controller Of Small-scale Wind & Light Complementary Electricity-generating System

How to solve the energy crisis has become a hotspot of global concern. Solar energy and wind energy are two kinds of widely used renewable energy in the current availability renewable energies. Solar energy and wind energy have complementary characteristics both in resource condition and technical application. Wind & Light complementary electricity-generating system thinking over there complementary characteristics is an economic and reasonable way of power supply. Especially, the small-scale Wind & Light complementary electricity-generating system can meet the needs of independent power supply required for people who live far away from the power grid.The main work of this paper is as follows:1,The structure of the small-scale Wind & Light complementary electricity-generating system is analyzed, and the discusses on principle and characteristic of operation for each part of the system are also carried out in this paper.2,The control strategy of wind generation, photovoltaic generation and battery charging are analyzed. An integrated and feasible control project is generalized based on the maximum power point tracking control strategy.3,A controller of small-scale Wind & Light complementary electricity-generating system is designed based on dsPIC30F2010 MCU. The hardware of several circuit modules on the controller are described, such as power supply circuit, current detection circuit, voltage detection circuit, DC / DC conversion circuit and unloading circuit. The software is structured with subroutine modules, mainly including AD sampling, PWM control, photovoltaic charging, wind charging, overload protection, PI control, status display , battery protection and so on.4,Relative experiments and analyses are finished. The results indicate that the controller of the small-scale Wind & Light complementary electricity-generating system is reasonable and feasible. Which can achieve the control strategy of maximum power point tracking(MPPT), and can meet the needs of battery charging and protection.