电力系统保护与控制Issue(12)：134-139,6.
一种基于新型载波同相层叠PWM方法的飞跨电容型光伏发电并网技术
Grid-connected photovoltaic power generation technology with flying capacitor inverter based on novel carrier-based disposition PWM method
摘要
Abstract
For 3-level flying capacitor photovoltaic (PV) inverter (FCPI), carrier-based phase-shifted method has the disadvantage of high line voltage harmonics and incapable of controlling flying capacitor voltage flexibly. This paper presents a grid-connected PV power generation system using novel carrier-based disposition PWM method which can balance flying capacitor voltage manually and reduce line voltage harmonics through adding zero-level vectors. This paper presents a 3-level FCPI grid-connected power generation system with proposed method, describes the basic principles of the proposed method and analyses the advantage of reducing line voltage total harmonic distortion (THD). Through Matlab/Simulink digital simulation and experiments, the results prove that the system has a fast response with capabilities of achieving maximum power point tracking (MPPT), stabling DC voltage and reducing line voltage of FCPI using the proposed method.关键词
载波层叠PWM方法/载波移相PWM方法/飞跨电容逆变器/电容电压平衡/光伏发电并网系统Key words
carrier-based PWM/phase-shifted PWM/flying capacitor inverter/capacitor voltage balance/PV grid-connected system分类
信息技术与安全科学引用本文复制引用
徐军,王琨,翟登辉,冯琳,李国杰..一种基于新型载波同相层叠PWM方法的飞跨电容型光伏发电并网技术[J].电力系统保护与控制,2015,(12):134-139,6.基金项目
国家自然科学基金资助项目(51307106)This work is supported by National Natural Science Foundation of China (No.51307106) （51307106）
