| Autor: |
Paul, Jeeshma Mary, Balachandran Remabai, Vinod, Jacob, Biji |
| Zdroj: |
Journal of Power Electronics; 20240101, Issue: Preprints p1-12, 12p |
| Abstrakt: |
This article proposes a space vector-based, Pulse Code Modulation (PCM) scheme with reduced zero sequence voltage for an Open-End-Winding-Induction-Motor (OEWIM) fed by two-level inverters on both sides. A multilevel inverter fed induction motor drive using Space Vector Sigma Delta Modulation (SVSDM) can be considered to be an analogy of a digital communication system. In the proposed scheme, the nearest three space vectors to the integrated error vector of the sigma delta modulator form the Thiessen region. In the Thiessen region, the reference vector gets quantized to its closest space vector in a sampling period. This reduces spurious switching. The quantized space vector is encoded to ones and zeros corresponding to the ON and OFF states of the inverter switches. In the proposed PCM, redundant switching vectors with reduced Zero Sequence Voltage (ZSV) are selected in the three-level operation. This results in reducing the ZSV without a reduction in the DC bus utilization. The proposed PCM is verified on a 3 HP OEWIM that is supplied with power from 11.5 KVA two-level inverters on both ends. Results of comparing the performance of the proposed PCM with those of existing modulation schemes are presented. |
| Databáze: |
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