Design and Evaluation of Interior Permanent-Magnet Compressor Motors for Commercial Transcritical $\hbox{CO}_{2}$ (R-744) Heat Pump Water Heaters
| Autor: | Predrag Stojan Hrnjak, Chad D. Bowers, Jiamin Yin, Gennadi Y. Sizov, Michael Petersen, Matthew W. Critchley, Stephen B. Memory, Ian P. Brown, Stefan Elbel |
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| Rok vydání: | 2015 |
| Předmět: |
Engineering
Dynamometer Isentropic process business.industry Rotor (electric) Electrical engineering Mechanical engineering Topology (electrical circuits) Industrial and Manufacturing Engineering law.invention Control and Systems Engineering law Magnet Torque Electrical and Electronic Engineering business Gas compressor Heat pump |
| Zdroj: | IEEE Transactions on Industry Applications. 51:576-586 |
| ISSN: | 1939-9367 0093-9994 |
| Popis: | This paper describes the design and experimental evaluation of two high-efficiency interior permanent-magnet (IPM) motors for use in a commercial transcritical $\hbox{CO}_{2}$ (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 $\hbox{CO}_{2}$ 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 $\hbox{CO}_{2}$ compressor operation and $\hbox{CO}_{2}$ HPWH systems. |
| Databáze: | OpenAIRE |
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