Abstract
This paper investigates the validity of the sampling theorem in the analysis of supply side line current harmonics as applied to 6-pulse AC-DC thyristor converters. The common pattern of the percentage harmonic factor, for the converter characteristic harmonic current, per incremental change of the thyristor firing angle is used as the basis of the study. The RMS values of the peak amplitudes of the characteristic harmonic currents induced in the input-phase of the converter supplying a DC motor are described in terms of the sampling theorem equations and further evaluated in terms of their respective individual harmonic contributions as the thyristor firing angle is changed. The MatLab/Simulink package is also employed to simulate the forward drive speed control operation of a DC motor using the 6-pulse AC-DC thyristor converter. However the percentage harmonic factor trends observed in the sampling theorem method appear to be generally increasing which is in contradiction to the MatLab/Simulink produced trends.
| Original language | English |
|---|---|
| Article number | 253 |
| Pages (from-to) | 148-152 |
| Number of pages | 5 |
| Journal | Renewable Energy and Power Quality Journal |
| Volume | 1 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Apr 2012 |
Keywords
- Firing angle
- Harmonic factor
- Line current harmonics
- Sampling theorem
- Thyristor converter
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
