Power Distribution Control and Performance Assessment of a Wind Energy
fed Microgrid Integrated with Hybrid Energy Storage System
Abstract
The present work proposes a coordinated power distribution control of
wind-energy fed self-excited induction generator (SEIG) based
low-voltage direct current (LVDC) autonomous microgrid. The battery and
supercapacitor (SC) hybrid energy storage system (HESS) is interfaced
with the common 48 V LVDC bus using a parallel-active configuration
through two bidirectional converters. The prime idea of hybridization is
to limit the instantaneous peak current demand and also to alleviate the
charge/discharge stress during transients, thus reducing the size of the
battery. The developed autonomous LVDC system with the supervisory power
distribution control scheme (PDCS) is experimentally validated for
different operating modes. The comparative experimental result analysis
substantiates the efficacy of the proposed PDCS along with seamless
transition between various modes.