Grid Connected Dual VSI Modules with Renewable Sources for Power Quality Improvement using Optimal Power Sharing

  • Unique Paper ID: 158953
  • Volume: 9
  • Issue: 10
  • PageNo: 1004-1011
  • Abstract:
  • In this paper dual VSI modules are introduced into a 3-ph grid with unbalanced linear and non-linear loads. One of the VSI(Voltage Source Inverter) modules is connected with a DC source operating as DG (Distributed Generation) unit and the other VSI module is connected with capacitor operating as STATCOM(Static Synchronous Compensator). The DG module VSI compensates the active power of the load and the STATCOM-VSI module compensates the reactive power and harmonics introduced by the non-linear load. Both the modules are operated with ISCT (Instantaneous Symmetrical Component Theory)control structure for synchronized power sharing. The DG-VSI module is later updated with renewable source like PV (Photo Voltaic) along with BESS(Battery Energy Storage System) replacing conventional DC source. An active power control and DC link voltage control are integrated to control DG-VSI and STATCOM-VSI modules respectively. Active and reactive power comparison graphs are shown, achieving renewable power sharing, reactive power and harmonics compensation.
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