摘要
传统逆变器为降压变换器,不适用于光伏发电系统等需要升压的环境,并且为避免短路,需要在同一桥臂加入死区信号,这将导致输出电流波形畸变,同时也限制了其电压利用率。该文为解决上述问题,改进传统变换器拓扑结构,提出一种输入电流连续型开关升压变换器拓扑结构并将其应用到光伏发电系统中。该拓扑为单级变换器,具有升压电路简单,输入电流连续,逆变侧上/下桥臂不需要添加死区时间,抗干扰能力强等优点,可很好的应用到光伏发电系统中。该文通过实验验证了该拓扑结构的准确性及应用到光伏发电系统的可行性。
As a buck converter,traditional inverter is not suitable for the photovoltaic power generation system which needs the boosting condition.Meanwhile,the inverter needs to add dead time in the same bridge arm signal for avoiding a short circuit.However,adding dead time limits the utilization rate of voltage and results in the distortion of current wave.To solve these problems mentioned above and to improve traditional converter topology,this paper provides a new topology called continuous switching boost converter that can be applied in the photovoltaic power generation system.This topology is a single-stage converter that has the advantages of simple boost circuit,continuous input current,no dead-zone and high anti-interference ability.It can be applied in photovoltaic power generation system.This paper validates the accuracy of the topology and the feasibility of the photovoltaic power generation system through experiments.
作者
刘硕
王云昊
杨立永
Liu Shuo;Wang Yunhao;Yang Liyong(College of Electrical and Control Engineering,North China University of Technology,Bejing 100144,China;Collaborative Innovation Center of Key Power Energy Saving Technologies in Bejing,Bejing 100144,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第6期272-277,共6页
Acta Energiae Solaris Sinica
基金
北京市自然科学基金(3174048)。
关键词
光伏组件
光伏发电
DC-DC变换器
最大功率点跟踪器
滞环扰动观测法
PV module
PV power generation
DC-DC converters
maximum power point trackers
hysteresis perturbation observation method
