摘要
提出了一种基于虚拟同步发电机算法的模式自适应微网调频控制方法,可在不改变控制结构和控制参数的条件下实现微网逆变器的多模式运行。分析了功率等级、开关频率、运行模式对系统参数的要求,运用小信号模型,以系统的稳态特性、动态特性、解耦性能和稳定性为约束条件对所提出的控制器参数进行了优化设计。仿真结果验证了提出的方法正确性,说明通过优化配置控制参数,所提出的模式自适应调频控制方法可同时满足并网和并联的控制要求,并实现模式间的无缝切换。
A mode-adaptive frequency controller for microgrid inverter based on virtual synchronous generator algorithm （VSGA） was proposed to satisfy the requirement in both island and grid-connected mode without any change of control structure and parameters. To assume the optimal design of the proposed frequency controller, a methodology of parameter setting was presented by the analysis of the effects on parameter setting of power rating, switch frequency and operation mode. Decoupling, stability, steady and dynamic performances were used as indices in this design approach via the small signal model in both modes. The simulation results are provided to validate the proposed frequency controller and the parameter setting methodology.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2013年第19期67-75,18,共9页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973计划)(2009CB219705
2009CB219708)~~
关键词
微网
频率控制
模式自适应
优化设计
小信号建模
microgrid
frequency control
mode adaptive
optimal design
small-signal model
