Optimal energy management of unbalanced three-phase grid-connected microgrids

Juan S. Giraldo, Jhon A. Castrillon, Carlos A. Castro, Federico Milano

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Citations (Scopus)
19 Downloads (Pure)


This paper presents a non-linear optimization problem based on nodal current injections to solve the optimal energy management of unbalanced, three-phase, grid-connected microgrids. The focus is on the modelling of small synchronous machines under unbalanced operation. Inverter-interfaced distributed energy resources, i.e., renewable sources and energy storage systems, are also considered and described. The proposed formulation minimizes the cost of the energy consumed by the microgrid while satisfying active and reactive power balances, the devices operational constraints, as well as current and voltage operational limits. The proposed model is tested using the IEEE 123 node test feeder and compared to commonly used formulations. Simulation results show the impact of unbalanced models on the energy management of three-phase microgrids.
Original languageEnglish
Title of host publication2019 IEEE Milan PowerTech, PowerTech 2019
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)978-1-5386-4722-6
Publication statusPublished - Jun 2019
Externally publishedYes
Event2019 IEEE Milan PowerTech - Milan, Italy
Duration: 23 Jun 201926 Jun 2019


Conference2019 IEEE Milan PowerTech


  • Optimal energy management
  • Renewable energy sources
  • Unbalanced generator model
  • Unbalanced microgrid


Dive into the research topics of 'Optimal energy management of unbalanced three-phase grid-connected microgrids'. Together they form a unique fingerprint.

Cite this