电力系统保护与控制Issue(21)：78-85,8.
基于MMC技术的光伏并网逆变器原理及仿真研究
Research on the principle and simulation of grid-connected PV inverter based on MMC
摘要
Abstract
Modular multilevel converter (MMC) topology has become the most attractive multilevel technology since it has been proposed. This paper analyzes the working principle of the grid-connected PV inverter with MMC as the core converter. The key technologies of MMC such as modulation and voltage balancing are studied and dynamic direct modulation method and simplified capacitor voltage sequencing are proposed. With the system level control using conventional double closed-loop controller, a simulation model of whole grid-connected PV inverter based on MMC is built. The simulation results confirm that the scheme of designing grid-connected PV inverter based on MMC technology and conventional system level controller is not only feasible but also has low harmonic advantage.关键词
光伏并网逆变器/模块化多电平换流器/直接调制法/电压均衡/最大功率点跟踪Key words
grid-connected PV inverter/MMC/direct modulation method/voltage balancing/maximum power point tracking (MPPT)分类
信息技术与安全科学引用本文复制引用
贾林壮,冯琳,李国杰,李素非,江秀臣..基于MMC技术的光伏并网逆变器原理及仿真研究[J].电力系统保护与控制,2013,(21):78-85,8.基金项目
国家自然科学基金资助项目（50977050）；863资助项目 （）
This work is supported by National Natural Science Foundation of China (No.50977050) and National High-tech R&D Program of China (863 Program)(No.2012AA050204) （No.50977050）
