DocumentCode :
1112106
Title :
Auxiliary Phase Design for Capacitor Start Motors
Author :
Buchanan, L.W. ; Winters, T.F.
Author_Institution :
Westinghouse Electric Corporation, Lima, Ohio.
Volume :
84
Issue :
11
fYear :
1965
Firstpage :
993
Lastpage :
999
Abstract :
A procedure is described for calculation of an auxiliary phase for a single-phase capacitor start motor. The size of wire, the number of turns, and the size of capacitor are determined to meet five restraints. These restraints are: required locked rotor torque, maximum allowable capacitor volts, maximum allowable locked rotor current, greatest current density in the auxiliary winding, and largest slot fullness that is permitted. A trial winding is calculated using estimated number of turns, a trial wire size, and a trial capacitor. The characteristic impedances are determined as a function of winding ratio, wire size, and capacitor size. For each wire size and capacitor, an auxiliary winding is determined which will meet the restraints if it is possible. The method is arranged to facilitate digital computer programming. The logical flow is such that the program will arrive at the best auxiliary or determine that no satisfactory design exists.
Keywords :
Capacitors; Chromium; Conductors; Current density; Dielectric losses; Impedance; Phase estimation; Rotors; Torque; Wire;
fLanguage :
English
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9510
Type :
jour
DOI :
10.1109/TPAS.1965.4766129
Filename :
4766129
Link To Document :
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