Abstract
The modulation technique is an effective measure to suppress the leakage current in three-phase three-level transformer-less photovoltaic systems. This paper further analyzes the intrinsic relationship between the common mode voltage and the zero-sequence voltage of three-phase three-leg three-level inverters, with a novel SVPWM method proposed. The presented algorithm makes the zero-sequence voltage impulse periodically balanced by using the small voltage vectors reasonably. Compared with the traditional SVPWM scheme, the proposed method can remarkably reduce the common mode voltage magnitude over all frequency. Besides, the algorithm requires small computational burden and is straightforward for an online implementation. Experimental results validate the effectiveness of the proposed SVPWM method.
| Original language | English |
|---|---|
| Title of host publication | 2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 |
| Number of pages | 6 |
| Publisher | IEEE |
| Publication date | 25 Jul 2017 |
| Pages | 1991-1996 |
| Article number | 7992356 |
| ISBN (Electronic) | 978-1-5090-5157-1 |
| DOIs | |
| Publication status | Published - 25 Jul 2017 |
| Event | 3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 - Kaohsiung, Taiwan, Province of China Duration: 3 Jun 2017 → 7 Jun 2017 |
Conference
| Conference | 3rd IEEE International Future Energy Electronics Conference and ECCE Asia, IFEEC - ECCE Asia 2017 |
|---|---|
| Country/Territory | Taiwan, Province of China |
| City | Kaohsiung |
| Period | 03/06/2017 → 07/06/2017 |
Keywords
- photovoltaic
- SVPWM
- three-level inverter
- zero-sequence voltage impulse