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With the growing energy crisis and environmental degradation, people are increasingly concerned about environmental protection and the development of new energy technologies, and the application of renewable energy has become a global trend, wind power and solar power renewable energy prospects of the two applications, in with a complementary resource conditions and technical applications. Wind and solar systems, taking full advantage of the power generation of wind and solar energy resources, reduce the use of a single energy may be caused by inadequate supply of electricity or unbalanced. Communications relay stations, distributed generation, has extremely important practical value in the remote areas of the power supply and other occasions, also microgrid important part. This article on the basis to study the characteristics of wind and solar technologies, will be used for street lighting system, do the following work: First, the structural analysis of wind and solar street light controller, solar hybrid street lighting controller operating characteristics and an important part of works propose a two-stage controller structure based on analog and digital hybrid control, primary adopt the TL494 control chip to achieve coordination of wind and solar charging secondary ATmega48 microcontroller as the master chip, to achieve maximum power. tracking and control of peripheral circuits. Followed by the analysis of control strategies for wind and solar systems, study solar and wind maximum power tracking principle and circuit method proposed \wind energy inputs at the same time achieve maximum power tracking. And then design an ATmega48 microcontroller as the core control, TL494 coordinated control of wind and solar street light controller on the main circuit, drive circuit, unloading circuit, the auxiliary power supply circuit, voltage and current sampling circuit hardware design, and set aside an SPI interface, wireless communications monitoring system in order to achieve the docking. On the software side, given the flow chart of software, including the main program, the battery charge and discharge electronic procedures and MPPT subroutine and function module design of the AD sampling PWM wave generation principle, battery charging, unloading protection and over- The discharge protection software programming. Finally, experimental debug controller, the experimental results show that this study developed wind and solar street light controller structure is simple, able to achieve the two inputs of solar and wind energy to meet the battery segmented charge and overcharge, over-discharge protection requirements, testing and test results verify the feasibility of the system design and related hardware and software design.
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