摘要
针对新能源发电电压波动大等问题,提出了一种稳定、高效的分布式发电模拟系统﹒该系统由四开关Buck-Boost直流转换器与全桥逆变电路级联构成,采用正弦脉宽调制技术(SPWM)实现频率步进可调、稳定无失真的交流输出,并通过对Buck-Boost转换器控制策略的优化,达到高效升降压的目的﹒测试结果表明,此系统具有输入电压范围宽、带负载能力强以及DC-AC转化效率高等特点,为微电网分布式发电系统的设计提供了新的思路﹒
A stable and efficient distributed generation simulation system is proposed to solve the problems of excessive voltage fluctuation of new energy generation.The system is composed of four-switch Buck-Boost DC converter and full-bridge inverter circuit cascaded,and uses Sinusoidal Pulse Width Modulation (SPWM) to realize the adjustment of the frequency steps,and to realize stable and undistorted AC output.And by optimizing the control strategy of Buck-Boost converter,the purpose of high-efficiency boost and buck can be achived.The test results show that the system has wide input voltage range,strong load capacity and high conversion efficiency of DC-AC,which provides a new idea for the design of the microgrid distributed generation system.
作者
周礼来
熊洁
李稳国
李加升
ZHOU Lilai;XIONG Jie;LI Wenguo;LI Jiasheng(College of Information and Electronic Engineering,Hunan City University,Yiyang,Hunan 413000,China)
出处
《湖南城市学院学报（自然科学版）》
CAS
2019年第4期52-56,共5页
Journal of Hunan City University:Natural Science
基金
湖南省自然科学基金项目(2017JJ2023)
湖南省教育厅科研项目(17C0297)
