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Comparison of Modulation Methods for Matrix Converters
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| Author(s) |
M. Jussila; M. Salo; H. Tuusa |
| Abstract |
This paper compares different modulation methods suitable for matrix converter. A matrix converter is a direct frequency converter for which both vector modulation and triangular wave voltage command modulation methods are suitable. Three such methods were simulated with Simplorer (R): two triangular wave voltage command methods, and one vector modulation method. The first method produces input currents with six-step waveforms. The other method produces sinusoidal input current waveforms. In the simulations the main circuit was ideal, and it was rated to 5 kVA RL-load for output power factor 0.8. Overmodulation was also examined in all cases. It was observed that reasonable overmodulation did not significantly increase THD% (Total Harmonic Distortion percent) for input current significantly. Thus increasing the output-input voltage ratio from the conventional 0.86 seemed to be possible. |
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| Filename: | Unnamed file |
| Filesize: | 238.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-23 by System |
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