An improved hierarchy and autonomous control for DC microgrid based on both model predictive and distributed droop control

Shunlong Xiao, Robert Balog

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Direct-current (dc) microgrids (MG), consisting of distributed renewable energy units and energy storage units, is expected to be the key enabling of future smart grid. The intermittent nature of renewable-energy units, coupled with the unpredictable changes in the load, requires the energy storage units compensate the fluctuating generated power and to regulate the dc-bus voltage. However, the energy storage units may not be always available, each energy unit converter should be able to switch between two different modes: current course converter to generate/consume power or voltage source converter to regulate the bus voltage. To address these two main challenges, a novel autonomous algorithm consisting of two layers of control is proposed, achieving good system dynamic, seamless transfer and decoupling performances. The primary layer control for each energy unit is based on model predictive current control, realizing free controller design and decoupled play & plug feature. Therefore, these energy units can be easily connected to the dc bus without affecting the operation of other converters. The secondary layer control based on a proposed distributed droop control determines the operation modes for each converter, either to be current source converter (CSC) or voltage source converter (VSC). The feasibility and effectiveness of the proposed control algorithm was verified under various case studies on dSPACE 1007 real-time simulation platform.

Original languageEnglish
Title of host publicationAPEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3319-3325
Number of pages7
Volume2018-March
ISBN (Electronic)9781538611807
DOIs
Publication statusPublished - 18 Apr 2018
Event33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018 - San Antonio, United States
Duration: 4 Mar 20188 Mar 2018

Other

Other33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018
CountryUnited States
CitySan Antonio
Period4/3/188/3/18

Fingerprint

Energy storage
Electric potential
Electric current control
Dynamical systems
Switches
Controllers

Keywords

  • Autonomous Control
  • DC Microgrid
  • Energy Storage System (ESS)
  • Model Predictive Control (MPC)
  • Renewable Energy Sources (RES)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Xiao, S., & Balog, R. (2018). An improved hierarchy and autonomous control for DC microgrid based on both model predictive and distributed droop control. In APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition (Vol. 2018-March, pp. 3319-3325). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2018.8341579

An improved hierarchy and autonomous control for DC microgrid based on both model predictive and distributed droop control. / Xiao, Shunlong; Balog, Robert.

APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Vol. 2018-March Institute of Electrical and Electronics Engineers Inc., 2018. p. 3319-3325.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Xiao, S & Balog, R 2018, An improved hierarchy and autonomous control for DC microgrid based on both model predictive and distributed droop control. in APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. vol. 2018-March, Institute of Electrical and Electronics Engineers Inc., pp. 3319-3325, 33rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2018, San Antonio, United States, 4/3/18. https://doi.org/10.1109/APEC.2018.8341579
Xiao S, Balog R. An improved hierarchy and autonomous control for DC microgrid based on both model predictive and distributed droop control. In APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Vol. 2018-March. Institute of Electrical and Electronics Engineers Inc. 2018. p. 3319-3325 https://doi.org/10.1109/APEC.2018.8341579
Xiao, Shunlong ; Balog, Robert. / An improved hierarchy and autonomous control for DC microgrid based on both model predictive and distributed droop control. APEC 2018 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition. Vol. 2018-March Institute of Electrical and Electronics Engineers Inc., 2018. pp. 3319-3325
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