Incorporating battery energy storage systems into multi-MW grid connected PV systems

Vandana Rallabandi, Oluwaseun M. Akeyo, Nicholas Jewell, Dan M. Ionel

Research output: Contribution to journalArticlepeer-review

78 Scopus citations


This paper analyzes the configuration, design, and operation of multi-MW grid connected solar photovoltaic (PV) systems with practical test cases provided by a 10-MW field development. In order to improve the capacity factor, the PV system operates at its maximum power point during periods of lower irradiance, and the power output is limited to a rated value at high irradiance. The proposed configuration also incorporates a utility scale battery energy storage system (BESS) connected to the grid through an independent inverter and benefits of the experience gained with a 1-MW 2-MWh BESS large demonstrator. The BESS power smoothing and frequency regulation capabilities are illustrated though combined theoretical and experimental studies. The behavior of the grid connected PV and BESS combined system is studied using a modified IEEE 14 bus test system implemented in PSCAD/EMTDC. This paper also includes a sizing exercise for energy storage in order to provide dispatchable PV power.

Original languageEnglish
Article number8432119
Pages (from-to)638-647
Number of pages10
JournalIEEE Transactions on Industry Applications
Issue number1
StatePublished - Jan 1 2019

Bibliographical note

Publisher Copyright:
© 2018 IEEE.


  • Ancillary functions
  • IEEE 14 bus
  • battery
  • battery energy storage system (BESS)
  • energy storage
  • frequency regulation
  • inverter
  • maximum power point tracking (MPPT)
  • photovoltaic (PV)
  • solar

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Incorporating battery energy storage systems into multi-MW grid connected PV systems'. Together they form a unique fingerprint.

Cite this