Improvement on single "Y" current of the variable speed system with cycloconverter-fed 12-phase synchronous motor

Author

Zhi-hao, Ye ; Xiao-feng, Zhang ; Huai-Shu, Li ; Feng, Yang

Author_Institution

Coll. of Electr. & information Eng., Naval Univ. of Eng., Wuhan

fYear

2006

fDate

23-26 May 2006

Firstpage

445

Lastpage

450

Abstract

The analytic equations of d, q current harmonics of the variable speed system with cycloconverter-fed 3-phase synchronous motor and those of single "Y" d, q current harmonics of the variable speed system with cycloconverter-fed 12-phase synchronous motor are derived. By an actual example, the d, q current harmonics of the two systems are calculated and the simulating current curves and experimental ones are also provided. The simulating and experimental results proves the validity of analytic equations and also denotes the single "Y" current of 12-phase synchronous motor variable speed system has much more harmonics than the current of related 3-phase system. This character is analyzed in theory and the main factor affecting the single "Y" current harmonic of the 12-phase system is obtained. The method of improving the single "Y" current harmonics of 12-phase system is pointed out and the simulation results testify its correctness

Keywords

cycloconvertors; harmonic analysis; synchronous motors; current harmonics; cycloconverter-fed 12-phase synchronous motor; single Y current; synchronous motor variable speed system; Equations; Harmonic analysis; Marine vehicles; Power system harmonics; Power system reliability; Propulsion; Synchronous motors; Thyristors; Torque; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006. International Symposium on

Conference_Location

Taormina

Print_ISBN

1-4244-0193-3

Type

conf

DOI

10.1109/SPEEDAM.2006.1649813

Filename

1649813