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Start Over Author "Brown, Ian P." Journal ieee transactions on industry applications
12 results on '"Brown, Ian P."'

12. Design and Evaluation of Interior Permanent-Magnet Compressor Motors for Commercial Transcritical \CO2 (R-744) Heat Pump Water Heaters.

Author

Brown, Ian P., Critchley, Matthew W., Yin, Jiamin, Memory, Stephen B., Sizov, Gennadi Y., Elbel, Stefan W., Bowers, Chad D., Petersen, Michael, and Hrnjak, Predrag S.

Subjects
*COMPRESSOR dynamics, *TOPOLOGY, *POWER transmission, *HEAT losses, *EXPANSION of liquids
Abstract

This paper describes the design and experimental evaluation of two high-efficiency interior permanent-magnet (IPM) motors for use in a commercial transcritical \CO2 (R-744) heat pump water heater (HPWH). Two IPM topologies, a 36-slot 6-pole topology and a 9-slot 6-pole topology, were selected, optimized, and prototyped using a common flat-bar IPM rotor. The experimental analysis includes standard measurements of electrical machine parameters, and dynamometer tests. The initial measurements of the \CO2 compressor performance with a stock line-fed induction machine and the 36-slot 6-pole IPM configuration have been completed. This paper finds a small isentropic compressor efficiency improvement from using the 36-slot 6-pole IPM motor compared to the stock line-fed induction machine at rated operating conditions (essentially constant speed). This paper also expands the open literature on the impact of high-efficiency motor drives on \CO2 compressor operation and \CO2 HPWH systems. [ABSTRACT FROM AUTHOR]

Published
2015
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