Distributed Hierarchical Control for Proportional Current Sharing in PV Systems


Calpbinici A., IRMAK E. , Kabalci E.

2nd IEEE Global Power, Energy and Communication Conference, GPECOM 2020, Virtual, Izmir, Turkey, 20 - 23 October 2020, pp.108-113 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1109/gpecom49333.2020.9248724
  • City: Virtual, Izmir
  • Country: Turkey
  • Page Numbers: pp.108-113

Abstract

© 2020 IEEE.Providing proportional power sharing between distributed energy sources plays a crucial role for the safe operation of microgrids. For proportional current sharing, while controlling the output current of constant power sources, the power generated by intermittent sources such as PV systems should be tracked. Therefore, this paper presents a distributed hierarchical control method that regulates the proportional current sharing considering both the generation capacity of PV systems and the load change on DC bus. For this purpose, per unit current values are used in order to transfer less information. Since the per-unit current values are suitable for plug and play function, there is no need to change the the control algorithm in case new PV systems are added. In order to test the proposed method, a simulation is performed in Matlab/Simulink and results show that the developed distributed hierarchical control method offers better control in power control of PV sources.