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Smart meter enabled control for variable speed heat pumps to increase PV self-consumption

 
: Fischer, D.; Rautenberg, F.; Wirtz, T.; Wille-Haussmann, B.; Madani, H.

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International Institute of Refrigeration -IIR-:
24th IIR International Congress of Refrigeration, ICR 2015. Proceedings : Yokohama, Japan, August 16-22, 2015
Paris: IIF/IIR, 2015
ISBN: 9782362150128
pp.4049-4056
International Congress of Refrigeration (ICR) <24, 2015, Yokohama>
English
Conference Paper
Fraunhofer ISE ()

Abstract
In the last five years the costs of photovoltaic systems have decreased considerably making it economically attractive to generate electricity locally. In many countries, self-consumption is the most attractive option to make use of the generated electricity. Variable speed heat pumps - if controlled properly - can take a share of the PV electricity to decrease costs and CO2 emissions for heat generation and increase PV self-consumption. This paper discusses a control strategy that uses real-time smart meter readings and adjusts the compressor speed to adapt heat pump electricity consumption depending on the available PV power. The approach is tested in a detailed building simulation. Self-consumption can be increased by 6% compared to a heat driven control. For the chosen PV size of 10kWp in a German multi-family house, an increase of storage size shows only little possibility for a further increase in self-consumption.

: http://publica.fraunhofer.de/documents/N-491132.html