Structural Approach to Analysis and Design of State-Feedback Active Damping for Grid-Tied Inverters

In this paper, a structural approach to analysis and design of general state-feedback active damping for grid-tied inverters equipped with LCL filters is proposed. The underlying principle is firstly to transform the resonance damping into a disturbance rejection problem through a structural model decomposition method. And then, for the disturbance rejection problem, a state-feedback-based control solution can be easily obtained, of which the popular capacitor-current-feedback active damping is a special case. Finally, the effectiveness of the theoretical analysis and design is well supported by simulation results.

[1]  Frede Blaabjerg,et al.  Damping Methods for Resonances Caused by LCL-Filter-Based Current-Controlled Grid-Tied Power Inverters: An Overview , 2017, IEEE Transactions on Industrial Electronics.

[2]  Marco Liserre,et al.  Grid Converters for Photovoltaic and Wind Power Systems , 2011 .

[3]  H. Pinheiro,et al.  Design and Implementation of a Robust Current Controller for VSI Connected to the Grid Through an LCL Filter , 2009, IEEE Transactions on Power Electronics.

[4]  Xinbo Ruan,et al.  Step-by-Step Controller Design for LCL-Type Grid-Connected Inverter with Capacitor–Current-Feedback Active-Damping , 2014 .

[5]  M. Liserre,et al.  Analysis of the Passive Damping Losses in LCL-Filter-Based Grid Converters , 2013, IEEE Transactions on Power Electronics.

[6]  Steffan Hansen,et al.  Investigation of Active Damping Approaches for PI-Based Current Control of Grid-Connected Pulse Width Modulation Converters With LCL Filters , 2010, IEEE Transactions on Industry Applications.

[7]  Marco Liserre,et al.  Filter-Based Active Damping of Voltage Source Converters With $LCL$ Filter , 2011, IEEE Transactions on Industrial Electronics.

[8]  M. Liserre,et al.  Genetic algorithm-based design of the active damping for an LCL-filter three-phase active rectifier , 2003, IEEE Transactions on Power Electronics.

[9]  Eric Monmasson,et al.  Robust Active Damping Methods for LCL Filter-Based Grid-Connected Converters , 2017, IEEE Transactions on Power Electronics.

[10]  Friedrich Wilhelm Fuchs,et al.  PI state space current control of grid- connected PWM converters with LCL filters , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[11]  R.W. De Doncker,et al.  Active damping of LCL resonance with minimum sensor effort by means of a digital infinite impulse response filter , 2007, 2007 European Conference on Power Electronics and Applications.