### Abstract

This paper presents a new switching strategy controling the most-common, simple, and well-known three-phase six-switch voltage source inverter (VSI). Via this strategy, each one of the six transistors conducts for 150°, instead of the known 180° or 120° conduction-modes, resulting in a new space voltage-vector diagram (SVD). For a wye-load connected to the VSI, the known 6 active and 2 zero voltage-vectors, coincided in the origin, construct the classical 7-SVD. Using the new controling strategy, new different 6 non-zero voltage-vectors are primarily introduced to the literature and added to the former ones conistituting an innovated 13 space vector diagram (13-SVD) for the inverter, instead of the conventional 7-SVD. The output phase-voltage becomes a 7-level, 12-step waveform, and a 50% reduction of the total harmonic distortion is obtained. Comprehensive study for the new switching strategy and the resulting voltage vectors is proposed, and comparisons with other VSI topologies; like neutral point clamped (NPC) and multilevel inverters (MLI) were also carried out. Simulation and experimental results show the contribution of the proposed technique.

Original language | English |
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Title of host publication | IEEE International Symposium on Industrial Electronics |

Pages | 402-407 |

Number of pages | 6 |

DOIs | |

Publication status | Published - 2012 |

Event | 21st IEEE International Symposium on Industrial Electronics, ISIE 2012 - Hangzhou, China Duration: May 28 2012 → May 31 2012 |

### Other

Other | 21st IEEE International Symposium on Industrial Electronics, ISIE 2012 |
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Country | China |

City | Hangzhou |

Period | 5/28/12 → 5/31/12 |

### Keywords

- 12-Step waveform
- 150° conduction-mode
- space vector modulation
- space voltage-vectors
- switching strategy
- total harmonic distortion
- two-level inverter
- voltage source inverters

### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Control and Systems Engineering

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## Cite this

*IEEE International Symposium on Industrial Electronics*(pp. 402-407). [6237120] https://doi.org/10.1109/ISIE.2012.6237120