中国电机工程学报Issue(36)：27-33,7.
基于模块化多电平换流器的大型光伏并网系统仿真研究
Simulation Research on Large-scale PV Grid-connected Systems Based on MMC
姚致清 1于飞 2赵倩 3张群3
作者信息
- 1. 华中科技大学电气与电子工程学院，湖北省 武汉市 430074
- 2. 青岛科技大学自动化与电子工程学院，山东省 青岛市 266042
- 3. 许继集团，河南省 许昌市 461000
- 折叠
摘要
Abstract
In order to deal with the problem of large scale photovoltaic (PV) grid-connected systems, such as the low solar energy utilization rate, the great influence on power grids and so on, a new structure of large scale PV grid-connected systems based on modular multilevel converter (MMC) was proposed, in which a PV array was connected to a sub-module of MMC through a DC-DC circuit. In this system, DC voltage and AC voltage were controlled by the outer loop controller, the reference of PWM modulation was offered by the inner loop controller, active power and reactive power were controlled separately. The structure and control strategies of this system were introduced in detail in this paper, and a model of a 10 MWp PV grid-connected system was built in Simulink. The feasibility of the structure and the effectiveness of the control strategy are verified by time-domain simulations performed in Simulink, and the simulation results indicate that this system can raise the utilization ratio of solar energy, and can reduce the grid-connected harmonic contents.关键词
太阳能/光伏并网/模块化多电平逆变器Key words
solar energy/PV grid-connected/modular multilevel converter (MMC)分类
信息技术与安全科学引用本文复制引用
姚致清,于飞,赵倩,张群..基于模块化多电平换流器的大型光伏并网系统仿真研究[J].中国电机工程学报,2013,(36):27-33,7.
