Chopper design for NICTD locomotives

Author

Moghbelli, Hassan ; Hanas, Gerald

Author_Institution

Dept. of Electr. Eng. Technol., Purdue Univ., Hammond, IN, USA

fYear

1993

fDate

6-8 Apr 1993

Firstpage

67

Lastpage

75

Abstract

The design of a DC chopper requires a compromise among switching frequency, inductor size, and switching losses. There are three problems to be solved for the actual application of a DC chopper in electric railways. The first is the realization of a high-voltage chopper, the second is the reduction of inductive interference, and the third is the reduction of weight and cost of chopper equipment. The design principles of SCR choppers and GTO choppers are compared. Some of the simplified circuit diagrams for the proposed DC chopper design are discussed. The commerical availability of a 0-1500 V DC chopper that can be incorporated into an existing locomotive design is investigated and some of actual DC chopper controller circuits for the traction and locomotive systems produced by different vendors are discussed

Keywords

DC motors; choppers (circuits); electric drives; electric locomotives; losses; power inductors; railways; switching circuits; thyristor applications; traction; 0 to 1500 V; DC chopper; GTO; HV; NICTD locomotives; SCR; application; circuit diagrams; design; electric railways; inductor size; switching frequency; switching losses; traction; weight; Choppers; Circuits; Control systems; Costs; Inductors; Interference; Rail transportation; Switching frequency; Switching loss; Thyristors;

fLanguage

English

Publisher

ieee

Conference_Titel

Railroad Conference, 1993., Proceedings of the 1993 IEEE/ASME Joint

Conference_Location

Pittsburgh, PA

Print_ISBN

0-7803-0963-4

Type

conf

DOI

10.1109/RRCON.1993.292961

Filename

292961