APPLICATION OF THYRISTORS IN RAILWAY TECHNOLOGY: CONSEQUENCES AND REMEDIES. INVESTIGATIONS ON A.C. MOTIVE POWER UNITS WITH SEVERAL THYRISTOR CIRCUITS (TESTS AND RESULTS OBTAINED FROM THE BLS-LOCOMOTIVE RE4/4 NO. 161)

This report concerns the tests undertaken with the BLS-Locomotive Re 4/4 161 fitted with several thyristor circuits. The object of the tests was to clarify the changes in the power factor and the harmonic wave content - the latter in view of its effects on signalling and telecommunication installations - resulting from the increased number of inverter steps and the limitation of the firing angle of the thyristor bridges to 35 degrees. The tests conducted have shown that in the case of thyristor-controlled motive power units, a multi-step control of the voltage regulation leads to a reduction of the harmonics of the line current and to an improvement in the power factor during acceleration and running below full power. The limitation of the firing angle of the thyristor bridges of 35 degrees, considered in its entirety, does not bring any advantages however.

• Supplemental Notes:
  • Restrictions on the use of this document are contained in the explanatory material.
• Corporate Authors:

  International Union of Railways

  Office of Research and Experiments
  Utrecht,   Netherlands 
• Publication Date: 1973-4

Media Info

• Features: Appendices; Figures; Tables;
• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Communications; Diesel electric locomotives; Electric locomotives; Electric power conditioning; Interference; Locomotives; Propulsion; Rapid transit; Signaling; Thyristors; Vehicle power plants
• Old TRIS Terms: Propulsion controls; Question a122; Thyristor control
• Subject Areas: Public Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00052505
• Record Type: Publication
• Source Agency: International Union of Railways
• Report/Paper Numbers: A122/RP6/E
• Files: TRIS
• Created Date: Jun 24 1981 12:00AM