DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Systems and methods for energy cost optimization in a building system

Abstract

Methods and systems to minimize energy cost in response to time-varying energy prices are presented for a variety of different pricing scenarios. A cascaded model predictive control system is disclosed comprising an inner controller and an outer controller. The inner controller controls power use using a derivative of a temperature setpoint and the outer controller controls temperature via a power setpoint or power deferral. An optimization procedure is used to minimize a cost function within a time horizon subject to temperature constraints, equality constraints, and demand charge constraints. Equality constraints are formulated using system model information and system state information whereas demand charge constraints are formulated using system state information and pricing information. A masking procedure is used to invalidate demand charge constraints for inactive pricing periods including peak, partial-peak, off-peak, critical-peak, and real-time.

Inventors:
;
Issue Date:
Research Org.:
Johnson Controls Technology Company, Holland, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1320888
Patent Number(s):
9436179
Application Number:
13/802,279
Assignee:
Johnson Controls Technology Company (Holland, MI)
Patent Classifications (CPCs):
G - PHYSICS G05 - CONTROLLING G05B - CONTROL OR REGULATING SYSTEMS IN GENERAL
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
DOE Contract Number:  
EE0003982
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Mar 13
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY, AND ECONOMY; 42 ENGINEERING

Citation Formats

Turney, Robert D., and Wenzel, Michael J. Systems and methods for energy cost optimization in a building system. United States: N. p., 2016. Web.
Turney, Robert D., & Wenzel, Michael J. Systems and methods for energy cost optimization in a building system. United States.
Turney, Robert D., and Wenzel, Michael J. Tue . "Systems and methods for energy cost optimization in a building system". United States. https://www.osti.gov/servlets/purl/1320888.
@article{osti_1320888,
title = {Systems and methods for energy cost optimization in a building system},
author = {Turney, Robert D. and Wenzel, Michael J.},
abstractNote = {Methods and systems to minimize energy cost in response to time-varying energy prices are presented for a variety of different pricing scenarios. A cascaded model predictive control system is disclosed comprising an inner controller and an outer controller. The inner controller controls power use using a derivative of a temperature setpoint and the outer controller controls temperature via a power setpoint or power deferral. An optimization procedure is used to minimize a cost function within a time horizon subject to temperature constraints, equality constraints, and demand charge constraints. Equality constraints are formulated using system model information and system state information whereas demand charge constraints are formulated using system state information and pricing information. A masking procedure is used to invalidate demand charge constraints for inactive pricing periods including peak, partial-peak, off-peak, critical-peak, and real-time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {9}
}

Works referenced in this record:

Dynamic matrix control method
patent, September 1982


Dynamic process control
patent, October 1986


Receding horizon based adaptive control having means for minimizing operating costs
patent, April 1994


Model predictive control apparatus
patent, September 1994


Method of multivariable predictive control utilizing range control
patent, September 1994


Method for on-line optimization of a plant
patent, August 2001


System and method for enterprise modeling, optimization and control
patent, August 2005


System and method of adaptive control of processes with varying dynamics
patent, May 2006


Integrated model predictive control and optimization within a process control system
patent, May 2006


Dynamic controller for controlling a system
patent, May 2006


Zone climate control
patent, March 2007


Process control system
patent, September 2007


Multiple-input/multiple-output control blocks with non-linear predictive capabilities
patent, September 2007


Optimized energy management system
patent, September 2007


Coordinated multivariable control of fuel and air in engines
patent, October 2007


Real-time quadratic programming for control of dynamical systems
patent, February 2008


Multivariable control for an engine
patent, February 2008


Integrated model predictive control and optimization within a process control system
patent, May 2008


Emissions sensors for fuel control in engines
patent, June 2008


SISO model predictive controller
patent, July 2008


Model predictive control apparatus
patent, August 2008


Training a support vector machine with process constraints
patent, October 2009


Dynamic model predictive control
patent, November 2010


Iterative matrix processor based implementation of real-time model predictive control
patent, November 2010


On-line adaptive model predictive control in a process control system
patent, December 2010


Emissions sensors for fuel control in engines
patent, February 2011


Real-time global optimization of building setpoints and sequence of operation
patent, February 2011


Configurable automotive controller
patent, August 2011


Training a model of a non-linear process
patent, September 2011


Configurable automotive controller
patent, November 2011


Decomposition of nonlinear dynamics using multiple model approach and gap metric analysis
patent, December 2011


Method and apparatus for prediction-based wind turbine control
patent, January 2012


Engine controller
patent, February 2012


Method and system for diagnostics of apparatus
patent, February 2012


Universal model predictive controller
patent, February 2012


Remote energy management using persistent smart grid network context
patent, December 2012


Automated demand response energy management system
patent, April 2013


Energy management system and method
patent, October 2013


Power demand-supply management server and power demand-supply management system
patent, July 2014


Automated demand response energy management system
patent, September 2014


Energy decision management system
patent, November 2014


Optimized energy management system
patent, December 2014


Optimized Energy Management System
patent-application, November 2007


Energy Optimization Method
patent-application, May 2011


Energy Optimization System
patent-application, May 2011


Building Management System with Fault Analysis
patent-application, July 2011


Energy Management Systems and Methods
patent-application, September 2011


Systems and Methods for Detecting Changes in Energy Usage in a Building
patent-application, April 2012


Virtual Thermostat System and Method
patent-application, January 2013


Integration of Commercial Building Operations with Electric System Operations and Markets
patent-application, January 2013


System and Method of Energy Management Control
patent-application, September 2013


A survey of industrial model predictive control technology
journal, July 2003


Tutorial overview of model predictive control
journal, June 2000


The unscented Kalman filter for nonlinear estimation
conference, January 2000

  • Wan, E. A.; Van Der Merwe, R.
  • Symposium on Adaptive Systems for Signal Processing Communications and Control, Proceedings of the IEEE 2000 Adaptive Systems for Signal Processing, Communications, and Control Symposium (Cat. No.00EX373)
  • https://doi.org/10.1109/ASSPCC.2000.882463