Electrical and Computer Engineering Publications

Title

Dispatch strategy and model for hybrid photovoltaic and trigeneration power systems

Document Type

Article

Publication Date

1-1-2011

Volume

88

Issue

9

Journal

Applied Energy

First Page

3270

URL with Digital Object Identifier

10.1016/j.apenergy.2011.02.044

Last Page

3276

Abstract

The advent of small scale combined heat and power (CHP) systems has provided the opportunity for in-house power backup of residential-scale photovoltaic (PV) arrays. These hybrid systems enjoy a symbiotic relationship between components, but have large thermal energy wastes when operated to provide 100% of the electric load. In a novel hybrid system is proposed here of PV-trigeneration. In order to reduce waste from excess heat, an absorption chiller has been proposed to utilize the CHP-produced thermal energy for cooling of PV-CHP system. This complexity has brought forth entirely new levels of system dynamics and interaction that require numerical simulation in order to optimize system design. This paper introduces a dispatch strategy for such a system that accounts for electric, domestic hot water, space heating, and space cooling load categories. The dispatch strategy was simulated for a typical home in Vancouver and the results indicate an improvement in performance of over 50% available when a PV-CHP system also accounts for cooling. The dispatch strategy and simulation are to be used as a foundation for an optimization algorithm of such systems. © 2011 Elsevier Ltd.

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