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Keywords: optimal control
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Journal Articles
Article Type: Research Papers
J. Sol. Energy Eng. May 2010, 132(2): 021009.
Published Online: May 10, 2010
... and peak electrical demand are sought. In response to the actual utility rates imposed in the investigated cities, fundamental insights and control simplifications are derived from those buildings deemed suitable candidates. The near-optimal strategies are derived from the optimal control trajectory...
Journal Articles
Article Type: Research Papers
J. Sol. Energy Eng. May 2007, 129(2): 215–225.
Published Online: October 31, 2006
... is continuously updated as operation continues. The present analysis shows that learning control is a feasible methodology to find a near-optimal control strategy for exploiting the active and passive building thermal storage capacity, and also shows that the learning performance is affected by the dimensionality...
Journal Articles
Article Type: Research Papers
J. Sol. Energy Eng. November 2006, 128(4): 498–505.
Published Online: July 26, 2006
... models of the turbine and use optimal control methods for gain calculation. Comparisons are made between new individual pitch, new collective pitch, and baseline controller performance in both above rated and below rated wind conditions. Results from simulations show the potential of individual pitch...
Journal Articles
Article Type: Research Papers
J. Sol. Energy Eng. November 2007, 129(4): 473–485.
Published Online: May 19, 2006
... for a design day using optimal control. The evaluation is conducted by means of a sensitivity analysis utilizing a dynamic building energy simulation program coupled to a popular technical computing environment. The optimal controller predicts the required extent of precooling (zone temperature set-point...
Journal Articles
Article Type: Research Papers
J. Sol. Energy Eng. August 2006, 128(3): 360–366.
Published Online: August 22, 2005
... schedules for the LAHU and investigates its impact on the LAHU potential thermal and pump energy savings. The optimal control schedule can potentially save 14% to 27% thermal energy and 17% to 100% pump energy during the winter under weather conditions that prevail in Omaha, Nebraska. The findings discussed...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. February 2005, 127(1): 37–46.
Published Online: February 7, 2005
... of harnessing both storage media concurrently in the context of optimal control for a range of selected parameters. A parametric analysis was conducted utilizing an EnergyPlus-based simulation environment to assess the effects of building mass, electrical utility rates, season and location, economizer operation...
Journal Articles
Article Type: Research Papers
J. Sol. Energy Eng. August 2005, 127(3): 343–351.
Published Online: January 21, 2005
... fashion to substantially reduce utility costs with marginal increases in overall energy consumption. In the case of energy optimal control, the reference control was replicated, i.e., if only energy consumption is of concern, neither active nor passive building thermal storage should be utilized...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. November 2004, 126(4): 1092–1100.
Published Online: November 18, 2004
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. May 2004, 126(2): 750–758.
Published Online: May 4, 2004
... airflow rates, office and laboratory supply air temperatures, and four dimensionless parameters that describe the building system and energy characteristics. The optimization method used in this paper can be used to identify the optimal control schedules in other HVAC systems. A theoretical linear...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. August 2003, 125(3): 292–301.
Published Online: August 4, 2003
... December 2002 01 March 2003 04 08 2003 building management systems power consumption energy conservation load management thermal analysis optimal control control system synthesis temperature control In conventional control strategies, the thermal storage of a building...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. August 2003, 125(3): 352–358.
Published Online: August 4, 2003
...-optimal control provide an economic benefit above simple threshold control. The examples are selected to illustrate the technical approach to system control using typical system characteristics and costs; every system in every location will have its own unique set of control criteria. The objective...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. February 2003, 125(1): 2–12.
Published Online: January 27, 2003
... investigated are chiller-priority and constant-proportion as conventional, instantaneous controls, while storage-priority and optimal control represent sophisticated controls employing load forecasting. Six parameters were investigated with respect to their influence on the ice storage system performance...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. February 2003, 125(1): 34–42.
Published Online: January 27, 2003
...Gregor P. Henze; Robert H. Dodier This paper investigates adaptive optimal control of a grid-independent photovoltaic system consisting of a collector, storage, and a load. The control algorithm is based on Q -Learning, a model-free reinforcement learning algorithm, which optimizes control...
Journal Articles
Article Type: Technical Papers
J. Sol. Energy Eng. November 2001, 123(4): 319–326.
Published Online: July 1, 2001
...-of-freedom; tower fore-aft bending, nacelle yaw, rotor position, and flapwise bending of each blade. An attempt is made to quantify what model degrees-of-freedom make the system most periodic, using Floquet modal properties. This justifies the inclusion of yaw motion in the model. Optimal control ideas...