Characteristics in transformer operation mode of linear motor-transformer apparatus

Author

Fujii, N. ; Kanamitsu, S. ; Mizuma, T.

Author_Institution

Dept. of Electr. Eng., Kyushu Univ., Fukuoka, Japan

fYear

2010

fDate

6-8 Sept. 2010

Firstpage

1

Lastpage

6

Abstract

The characteristics of linear transformer are studied analytically, which is composed in one of modes of linear motor-transformer apparatus proposed for future wireless LRV (light rail vehicle). The secondary (onboard) power factor can adjusted at any value by onboard converter. The equivalent circuit is used to study the transferred power control. The parameters are determined by three-dimensional FEM (finite element method) analysis for one pole-pair model. Under the rated primary (input) and secondary voltage and current, which are specified for linear motor operation, the characteristics to the secondary power factor are cleared. It is also shown that the input capacitor can improve the primary power factor and decrease the input power capacity, but does not change the efficiency. This linear transformer has the efficiency of 91% and the input power factor of 0.87 for the control of secondary power factor of 0.4 under the condition without input capacitor.

Keywords

finite element analysis; light rail systems; linear motors; transformers; FEM; linear motor transformer apparatus; onboard converter; power factor; transformer operation mode; wireless LRV; Capacitance; Capacitors; Converters; Equivalent circuits; Finite element methods; Reactive power; Windings; FEM; LIM; equivalent circuit; finite element method; linear motor; linear transformer; non-contact power collection; power factor; wireless LRV;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2010 XIX International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-4174-7

Electronic_ISBN

978-1-4244-4175-4

Type

conf

DOI

10.1109/ICELMACH.2010.5608331

Filename

5608331