摘要
相较于交流微电网,直流微电网在减少传输损耗和提升系统稳定性方面具有突出优势,也是未来微电网的发展趋势之一。近年来,DC-DC变换器正向提高控制精度、集成度、响应速度的方向飞速发展。以Buck-Boost双向DC-DC变换器为例构建实验模型,以脉冲宽度调制(Pulse Width Modulation,PWM)电路、电流内环控制电路和电压外环控制电路组成控制电路,采用比例控制环节的双闭环控制实现微电网系统中双向变换器的控制,并设计实验参数,根据仿真得出波形,证明其具有响应速度快、控制精度高、电流纹波小等特点,符合实际需求。
Compared with AC microgrid,DC microgrid has outstanding advantages in reducing transmission loss and improving system stability,which is also one of the development trends of microgrid in the future.In recent years,DC-DC converter is developing rapidly in the direction of improving control accuracy,integration and response speed.Taking Buck-Boost bidirectional DC-DC converter as an example,the experimental model is constructed,and the control circuit is composed of Pulse Width Modulation(PWM)circuit,current inner loop control circuit and voltage outer loop control circuit.The control of bidirectional converter in microgrid system is realized by using the double closed-loop control of proportional control link,and the experimental parameters are designed,and the waveform is obtained according to the simulation,which proves that it has the characteristics of fast response,high control accuracy,small current ripple and so on,and meets the actual demand.
作者
时颖
杭阿芳
田行璇
许海洋
龙文萱
SHI Ying;HANG Afang;TIAN Xingxuan;XU Haiyang;LONG Wenxuan(School of Electrical and Mechanical Engineering,Jinling Institute of Technology,Nanjing 211169)
出处
《现代制造技术与装备》
2022年第6期14-17,共4页
Modern Manufacturing Technology and Equipment
基金
校级选拔创新训练计划项目(202113573080M)。
