Decentralized Control Coordination of PV-BSS Systems in Islanded DC Nanogrids

Jimiao Zhang, Jie Li

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

Abstract

Solar photovoltaics (PV s) and battery storage systems (BSSs) are two important distributed energy resources that can bring measurable environmental and economic benefits to the power grids. In this paper, a decentralized strategy is presented for coordinating the control of PV sand BSSs in islanded DC nanogrids. Depending on the measured DC bus voltages, PVs can adaptively switch between the V-P droop mode and the maximum power point tracking (MPPT) mode, thus reducing the impact of transient disturbances on the system operation. In addition, the dual active bridge (DAB) DC-DC converters are employed to interface BSSs to the nanogrid due to the converter's high-performance power conversion capabilities. To prevent overcharging/ discharging of batteries, a state of charge (SoC)-based adaptive droop control method is proposed. The control of PVs and BSSs is coordinated in a communication-less fashion to maintain the nanogrid load balancing, as well as to regulate the common DC bus voltage. The proposed control strategy is easy to implement with reduced complexity, while its satisfactory dynamic performance is demonstrated via numerical simulations using MATLAB/Simulink.

Original languageEnglish (US)
Title of host publication2021 North American Power Symposium, NAPS 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665420815
DOIs
StatePublished - 2021
Event2021 North American Power Symposium, NAPS 2021 - College Station, United States
Duration: Nov 14 2021Nov 16 2021

Publication series

Name2021 North American Power Symposium, NAPS 2021

Conference

Conference2021 North American Power Symposium, NAPS 2021
Country/TerritoryUnited States
CityCollege Station
Period11/14/2111/16/21

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Information Systems and Management
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Control and Optimization

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