The analysis of an ungrounded Wye-Delta transformer bank serving an induction motor and single-phase lighting loads

Author

Kersting, W.H. ; Rathbun, J.S.

Author_Institution

Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA

Volume

36

Issue

1

fYear

2000

Firstpage

39

Lastpage

45

Abstract

This paper documents the detailed analysis of the three-phase ungrounded wye-delta transformer bank serving a combination three-phase induction motor and single-phase lighting load. A 3×3 transfer function matrix is developed that makes it possible to determine the load line-to-line voltages with a knowledge of the primary voltages of the transformer bank. Included in the transfer function matrix are the transformer impedances, unsymmetrical secondary impedance matrix, and the impedances of the motor and single-phase lighting load

Keywords

induction motors; lighting; load (electric); power transformers; transfer function matrices; 3×3 transfer function matrix; induction motor; load line-to-line voltages; single-phase lighting loads; three-phase; transformer bank primary voltages; ungrounded Wye-Delta transformer bank; Aggregates; Electric variables; Equations; Impedance; Induction motors; Kirchhoff´s Law; Phase transformers; Text analysis; Transfer functions; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.821794

Filename

821794