Dynamic filtering of stochastic solar resources using HVAC drive control - A determination of feasible bandwidth

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

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

Abstract

This paper defines a bandwidth over which power electronic HVAC (heating, ventilation, and air-conditioning) drives can operate such that when integrated with stochastic solar power they act as an effective electric swing bus to mitigate solar power variability. In doing so, grid power is shown to be substantially more constant, reducing the need for fast grid resources or dedicated energy storage. The concept is equivalent to using building thermal energy as virtual dynamic storage in support of power grid operation. Two years of solar data have been collected on sub-millisecond time scales to test the results. Here a three-day sample is used to evaluate efficacy, determine solar frequency-domain content, and test a low-pass filtering concept introduced to model ideal power compensation. A more 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.

Original languageEnglish (US)
Title of host publication2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3127-3134
Number of pages8
ISBN (Electronic)9781467371506
DOIs
StatePublished - Oct 27 2015
Event7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 - Montreal, Canada
Duration: Sep 20 2015Sep 24 2015

Publication series

Name2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

Other

Other7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
CountryCanada
CityMontreal
Period9/20/159/24/15

Keywords

  • Energy efficient buildings
  • HVAC systems
  • frequency domain analysis
  • grid-level energy storage
  • power electronic drives
  • solar energy
  • thermal storage

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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    Cao, Y., Magerko, J. A., Navidi, T., & Krein, P. T. (2015). Dynamic filtering of stochastic solar resources using HVAC drive control - A determination of feasible bandwidth. In 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015 (pp. 3127-3134). [7310098] (2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2015.7310098