Low Distortion Boost Rectifier Discontinuous Conduction Mode with Peak Current Mode Control for Wind Power Systems

Abstract

This  work  presents  a  Three-Phase  Boost  Rectifier with  peak  current  mode  control  operated  in  Discontinuous Conduction Mode  working  as  the  input  stage  of  wind  power systems  based  on  Permanent Magnet  Synchronous Generators with  variable  speed  operation.  It  is  shown  that  the  DCM operation  significantly  reduces  the  Total Harmonics Distortion of   the currents in   the Permanent Magnet   Synchronous Generator,  so  that  the  vibrations  and  mechanical  stress  of  the generator  is  minimized.  The  characteristics of  the  DCM  Boost rectifier  are  studied considering:  1)  The  resistance  in  series  of the  inductors;  2)  The modeling and  adjustment  of  the  current injected control yielding a stable loop; 3) The design of an input filter  that  reduces  the switching  noise in  the  currents  of  the generator.