Dynamic energy management needs in low-energy buildings imposed by stochastic solar resources

Yue Cao, John A. Magerko, Thomas Navidi, Philip T. Krein

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

Abstract

This paper introduces various electrical and thermal energy generation, consumption, and storage components in solar powered low-energy buildings. Dynamic management of such energy components is essential given the stochastic solar resources. Emphasis is put on power electronic HVAC (heating, ventilation, and air-conditioning) drives, which can act as an effective electric swing bus to mitigate solar power variability. In doing so, grid power flows become substantially more constant, reducing the need for fast grid resources or dedicated energy storage such as batteries. The concept is equivalent to using building thermal energy as virtual dynamic storage in support of power grid operation. The paper defines a bandwidth over which such HVAC drives can operate. A practical band-pass filter is realized that provides 1) lower frequency bounds such that the building maintains consistent room temperature via the HVAC system as demonstrated by a thermal modeling study, and 2) upper frequency bounds that ensure commanded HVAC fan speeds do not update arbitrarily fast. The latter primarily avoids acoustic discomfort to users. The combination is illustrated by experimental results based on various update rates of a variable frequency fan drive over a sample of actual stochastic solar data. Building electrical and thermal energy systems modeling by MATLAB is addressed throughout the paper, including solar and HVAC systems as well as batteries and water tanks.

Original languageEnglish (US)
Title of host publicationProceedings of the 2015 International Conference on Complex Systems Engineering, ICCSE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467371773
DOIs
StatePublished - Jan 18 2016
EventInternational Conference on Complex Systems Engineering, ICCSE 2015 - Storrs, United States
Duration: Nov 9 2015Nov 10 2015

Publication series

NameProceedings of the 2015 International Conference on Complex Systems Engineering, ICCSE 2015

Other

OtherInternational Conference on Complex Systems Engineering, ICCSE 2015
CountryUnited States
CityStorrs
Period11/9/1511/10/15

Keywords

  • HVAC systems
  • Low-energy buildings
  • complex system energy management
  • frequency domain analysis
  • grid-level energy storage
  • power electronic drives
  • solar energy
  • thermal storage

ASJC Scopus subject areas

  • Hardware and Architecture
  • Control and Systems Engineering

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  • Cite this

    Cao, Y., Magerko, J. A., Navidi, T., & Krein, P. T. (2016). Dynamic energy management needs in low-energy buildings imposed by stochastic solar resources. In Proceedings of the 2015 International Conference on Complex Systems Engineering, ICCSE 2015 [7385979] (Proceedings of the 2015 International Conference on Complex Systems Engineering, ICCSE 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ComplexSys.2015.7385979