| Title |
A New Switching Method for Reducing switch loss of Single-phase three-level NPC inverter |
| Authors |
이승주(Lee, Seung-Joo) ; 이준석(Lee, June-Seok) ; 이교범(Lee, Kyo-Beum) |
| DOI |
https://doi.org/10.5370/KIEE.2015.64.2.268 |
| Keywords |
Neutral point clamed (NPC) ; Three-level inverter ; Clamp switching method |
| Abstract |
This paper proposes a method of switching to improve power loss for the single-phase three-level NPC inverter. The conventional switching methods, which are called as the bipolar and unipolar switching methods, are used for single phase inverters using three-level topology. However, these switching method have disadvantage in the power loss. Because all of the switch are operated. To reduce the power loss of the three-level NPC inverter, clamp switching method is introduced in this paper. This way, one of the lag is fixed that switching loss is reduced. This paper analyzes and compares power losses of unipolar method and clamp method. The validity of the power loss analysis is verified through the simulation and experimental results. |