A Novel Grid-Connected Converter with Active Power Filtering Function

Abstract A Novel Grid-Connected Converter with ActivePower Filtering Function was proposed. Considering the specific situation, main circuit and controller were designed. The proposed system can exchange active power with grid and/or compensate harmonic current and reactive power of grid at the same time or respectively. LCL type filter was adopted to attain a good filtering effect. Proportional Integral (PI) control, repetitive control as well as feed forward control which can gain better dynamic performance composed the control system. To track the time-varying active current value, the influence of time lag caused by repetitive control during the fast switching period was considered. DC link voltage controller was designed for its special applications. Simulation results verify the high steady state precision and fast dynamic response of the system.

[1]  M. Liserre,et al.  Design and control of an LCL-filter based three-phase active rectifier , 2001, Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248).

[2]  Paolo Mattavelli,et al.  A Negative Feedback Repetitive Control Scheme for Harmonic Compensation , 2006, IEEE Transactions on Industrial Electronics.

[3]  Arindam Ghosh,et al.  Load sharing and power quality enhanced operation of a distributed microgrid , 2009 .

[4]  Ward T. Jewell,et al.  Interconnecting distributed resources with electric power systems: requirements, modeling, and analysis , 2005 .

[5]  D. Menniti,et al.  Grid-interfacing active power filters to improve the power quality in a microgrid , 2008, 2008 13th International Conference on Harmonics and Quality of Power.