A Passivity based Power Shaping Control of Building HVAC Systems

[+] Author and Article Information
Venkatesh Chinde

Mechanical Engineering Iowa State University 2025 Black Engineering Ames, USA

Krishna Chaitanya

Electrical Engineering IIT Madras, Chennai, India

Atul Kelkar

Mechanical Engineering Iowa State University 2025 Black Engineering Ames, USA

Ramakrishna Pasumarthy

Electrical Engineering IIT Madras, Chennai, India

Soumik Sarkar

Mechanical Engineering Iowa State University 2025 Black Engineering Ames, USA

Navdeep Singh

Electrical Engineering VJTI, Mumbai, India

1Corresponding author.

ASME doi:10.1115/1.4036885 History: Received August 12, 2016; Revised May 16, 2017


Regulating indoor air environment is one of the core functions of building energy management system. Heating, Ventilating and Air-conditioning (HVAC) control systems play an important role in adjusting the room temperature to provide occupants a desired level of comfort. Occupant comfort has a direct effect on the energy consumption and providing an optimal balance between comfort and energy consumption is a challenging problem. This paper presents a framework for control of building HVAC systems using a methodology based on power shaping paradigm that exploits the passivity property of a system. The system dynamics are expressed in the Brayton-Moser (BM) form which exhibits a gradient structure with the mixed-potential function, which has the units of power. The power shaping technique is used to synthesize the controller by assigning a desired power function to the closed loop dynamics so as to make the equilibrium point asymptotically stable. The proposed methodology is demonstrated on HVAC subsystems: RC network building zone model and a heat exchanger system.

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