基于变流器的能量回馈装置设计实现  

Design and implementation of energy feedback device based on converter

作　　者：张芳 熊和虎 于飞龙 倪晓昌[1] 王利强[1] ZHANG Fang;XIONG Hehu;YU Feilong;NI Xiaochang;WANG Liqiang(School of Electronic Engineering,Tianjin University of Technology and Education,Tianjin 300222,China)

机构地区：[1]天津职业技术师范大学电子工程学院

出　　处：《智能计算机与应用》2019年第3期223-227,231,共6页Intelligent Computer and Applications

基　　金：国家级大学生创新创业项目(CZ1704030136);教育部产教协同育人项目(XJJW0804);天津市十三五应用型专建项目

摘　　要：电源在人们社会生活当中随处可见,随着社会的发展,能源问题日趋严重,节能与能量回馈方面有着很大的研究意义。本文就直流转换成交流供给负载,再将负载上的交流转换成直流反馈到交流的输入端子,实现能量的反馈使用。装置主要分为2个部分,第一部分是DC-AC转换,该部分主要以STC12C5A60S2单片机为核心,通过自然数查表法控制硬件PWM模块生成SPWM脉冲信号,采用单极性调制方案驱动单相全桥逆变电路,输出经LC低通滤波器滤波,便可在负载上得到稳定的正弦波交流电。第二部分也以STC12C5A60S2单片机为核心调制PWM脉冲信号,经过MOS管驱动IIR2104芯片控制整个BOOST升压电路。单片机内部自带的10位ADC能通过电流电压检测实时反馈电流和电压数值,通过反馈值调整输出的PWM脉冲的占空比,形成电压闭环控制系统。按键能设置输出电流从0.1 A到2 A的限度。Power supply is everywhere in the social life.With the development of society,energy problem is becoming more and more serious.Energy conservation and energy feedback have great research significance.In this paper,DC is converted into AC supply load,and then AC on load is converted into DC and fed back to AC input terminal for realizing energy feedback.The device is mainly divided into two parts.The first part is DC-AC conversion.The core of this part is STC12C5A60S2 MCU.The hardware PWM module is controlled by natural number table lookup method to generate SPWM pulse signal.The single-phase full-bridge inverter circuit is driven by unipolar modulation scheme.The output is filtered by LC low-pass filter,and stable sinusoidal AC can be obtained on the load.The second part also uses STC12C5A60S2 MCU as the core to modulate the PWM pulse signal.The whole BOOST circuit is controlled by IIR2104 chip driven by MOS transistor.The 10-bit ADC in the MCU can detect the real-time feedback current and voltage values by current and voltage,and adjust the duty cycle of the output PWM pulse by the feedback value to form a closed-loop voltage control system.The button can set the limit of output current from 0.1 A to 2 A.

关 键 词：逆变 BOOST升压 单片机 SPW 

分 类 号：TN86[电子电信—信息与通信工程]