11. Grid Filter Design

  1. Remus Teodorescu1,
  2. Marco Liserre2 and
  3. Pedro Rodríguez3

Published Online: 19 DEC 2010

DOI: 10.1002/9780470667057.ch11

Grid Converters for Photovoltaic and Wind Power Systems

Grid Converters for Photovoltaic and Wind Power Systems

How to Cite

Teodorescu, R., Liserre, M. and Rodríguez, P. (2011) Grid Filter Design, in Grid Converters for Photovoltaic and Wind Power Systems, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470667057.ch11

Author Information

  1. 1

    Aalborg University, Denmark

  2. 2

    Politecnico di Bari, Italy

  3. 3

    Technical University of Catalonia, Spain

Publication History

  1. Published Online: 19 DEC 2010
  2. Published Print: 14 JAN 2011

ISBN Information

Print ISBN: 9780470057513

Online ISBN: 9780470667057



  • grid filter design;
  • grid filter role in VSC-based grid converter operation - twofold;
  • VSC based grid converters - generating PWM carrier and side-band voltage harmonics;
  • standards and grid codes, compliance with limitations - stringent for frequencies, above a certain threshold;
  • design considerations, voltage source converter - needing AC and DC passive elements;
  • ripple analysis and converter-side inductor choice - LCL filter behaviour, and capacitor short-circuit at frequency of ripple;
  • grid-filter design guidelines, challenged by grid conditions - in terms of background harmonic distortion and stiffness;
  • passive damping, and decrease of overall system efficiency - and associated losses;
  • Pole-zero and Bode plots of LCL-filter transfer function;
  • nonlinear behaviour of the filter


This chapter contains sections titled:

  • Introduction

  • Filter Topologies

  • Design Considerations

  • Practical Examples of LCL Filters and Grid Interactions

  • Resonance Problem and Damping Solutions

  • Nonlinear Behaviour of the Filter

  • Summary

  • References