Title :
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. ; Elbel, Stefan W. ; Bowers, Chad D. ; Petersen, Michael ; Hrnjak, Predrag S. ; Sizov, Gennadi Y.
Author_Institution :
A.O. Smith Corp. Technol. Center, Milwaukee, WI, USA
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, 36 slot 6 pole and 9 slot 6 pole, were selected, optimized, and prototyped using a common, flat bar interior permanent magnet rotor. The experimental analysis includes standard measurements of electrical machine quantities, and light load dynamometer tests. Initial measurements of the CO2 compressor and HPWH system performance with a stock line fed induction machine have been completed.
Keywords :
asynchronous machines; compressors; dynamometers; heat pumps; heating elements; load (electric); machine testing; permanent magnet motors; water; CO2; CO2 compressor measurements; HPWH system performance; IPM topologies; commercial transcritical CO2 (R-744) heat pump water heaters; flat bar interior permanent magnet rotor; high efficiency IPM motors; interior permanent magnet compressor motor design; interior permanent magnet compressor motor evaluation; light load dynamometer tests; stock line fed induction machine; Heat pumps; Permanent magnet motors; Rotors; Stator windings; Torque; Water heating;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342379
