Coordinated control of multi-functional grid-tied inverters using conductance and susceptance limitation

作者：Zeng, Zheng; Zhao, Rongxiang; Yang, Huan^*

来源：IET Power Electronics, 2014, 7(7): 1821-1831.

DOI：10.1049/iet-pel.2013.0692

• invertors
• power supply quality
• distributed power generation
• power system security
• power system harmonics
• power generation economics
• power generation control
• multifunctional grid-tied inverters
• nonlinear local load
• reactive local load
• microgrid economic operation
• microgrid security
• microgrid stability
• harmonic compensation
• reactive current
• power quality conditioners
• advanced control strategy
• MFGTI
• renewable energy resources
• coordinated control strategy

Owing to the numerous non-linear and reactive local loads, the applied grid-tied inverters etc., the quality of power supply of micro-grids becomes a challenging issue need to be highly addressed. As the power quality can significantly affect the secure, stable, effective and economic operation of the micro-grids, the compensation of the harmonic and reactive current in the micro-grids by the use of power quality conditioners and/or advanced control strategies has been highlighted. In this study, the multi-functional grid-tied inverters (MFGTIs) are attempted to interface renewable energy resources and enhance the power quality within the micro-grid. The MFGTIs encompassed with the coordinated control strategy based on the Fryze-Buchholz-Dpenbrock (FBD) theory. Through limiting the harmonic and reactive conductance and susceptance detected by FBD theory, the harmonic and reactive current within the micro-grid can be shared among the MFGTIs in a coordinated and automatic fashion in accordance with their capacities without communication. A set of the experiments based on the micro-grid test-bed are carried out and the results confirm the effectiveness and feasibility of the suggested control strategies.

• 出版日期2014-7
• 单位浙江大学