ANALYSIS OF POWER CONVERTERS FOR AC-FED TRACTION DRIVES AND MICROCOMPUTER-AIDED ON-LINE OPTIMIZATION OF THEIR LINE RESPONSE
The analysis of sector-controllable bridges shows the dependence of line responses on special circuit parameters and control methods. The line response of a line current is calculated in term of the corresponding harmonic spectrum and the magnitudes of the power factor lambda and the psophometric current I//p//s. Referring to the case of a drive model, it is shown how a microcomputer control system optimizes the line response of a particular power converter. This system evaluates the harmonics of line current and line voltage, using a fast FFT-computer. These harmonics are then expressed in terms of certain quantities which represent the line response of the system. A control algorithm makes use of these quantities to calculate a combination of firing angles for an optimum power factor, the minimum psophometric current or the suppression of certain harmonics.
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Corporate Authors:
Institute of Electrical and Electronics Engineers (IEEE)
Operations Center, 445 Hoes Lane, P.O. Box 1331
Piscataway, NJ United States 08855-1331 -
Authors:
- Becker, W
- Janssen, R
- MUELLER-HELLMANN, A
- Skudelny, H-C
- Publication Date: 1984-5
Media Info
- Features: References;
- Pagination: p. 605-614
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Serial:
- IEEE Transactions on Industry Applications
- Issue Number: 3
- Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Subject/Index Terms
- TRT Terms: Digital computers; Electric locomotives; Electric power conditioning; Electric power supply; Electric railroads; Fast Fourier transforms; Harmonics; Mathematical models; Motors; Power converters; Power factor (Electricity); Traction; Transformations (Mathematics)
- Old TRIS Terms: Computer systems, digital; Controlled power converters; Converters; Line response; Mathematical transformations; On line operation; Power factors; Reactive and psophometric current
- Subject Areas: Energy; Public Transportation; Railroads; Vehicles and Equipment;
Filing Info
- Accession Number: 00391576
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: VIA-2
- Files: TRIS
- Created Date: Jan 30 1985 12:00AM