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引用次数: 4
摘要
本文的工作旨在研究和实现静态变换器。12V DC / 220V AC。这最后需要我们同时实现两个转换器。转换的第一阶段是一个飞回式斩波器(buck-boost)，由使用TL494的光伏板供电，该光伏板产生PWM信号，用于控制所使用的两个晶体管，这使我们能够具有311V的可调电压，控制回路可以保持恒定的张力，无论温度和阳光的影响如何。该斩波馈送MOSFET晶体管桥中的DC / AC转换器的第二级，逆变器的每个手臂由电源驱动器IR2110控制，该驱动器将微控制器PWM控制(16F877A)传输到MOSFET。后者提供在日常生活中可用的电压为220v，频率为50hz的准正弦信号。
Design and Construction of an Inverter for a Photovoltaic System
Work presented in this article aims to study and realize static converter. 12V DC / 220V AC. This last took us to realize two converters at the same time. The first stage of the conversion is a fly back type chopper (buck-boost) powered by a photovoltaic panel using the TL494 which generates us a PWM signal for the control of the two transistors used which allowed us to have voltage of 311V adjustable with control loop that holds the constant tension whatever the influences of temperature and sunshine. This chopper feeds the second stage which is a DC / AC converter in MOSFET Transistor Bridge, each arm of the inverter is controlled by a power driver type IR2110 which transmits the microcontroller PWM control (16F877A) to the MOSFET. The latter provides a quasi-sinusoidal signal with a voltage of 220 V and a frequency of 50 Hz usable in everyday life.
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