A novel neutral point potential stabilization technique using the information of output current polarities and voltage vector
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol.38, no.6, pp.1572-1580, 2002 (SCI-Expanded, Scopus)
- Publication Type: Article / Article
- Volume: 38 Issue: 6
- Publication Date: 2002
- Doi Number: 10.1109/tia.2002.804761
- Journal Name: IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
- Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Page Numbers: pp.1572-1580
- Keywords: current polarity, inverter, neutral point potential, space vector, stabilization
- Middle East Technical University Affiliated: Yes
Abstract
This paper proposes a new neutral point potential control technique for the neutral-point-clamped three-level inverter. Utilizing the phase current polarity information, this technique distributes the redundant voltage vectors in a manner to obtain stable neutral point voltage under all operating conditions including the zero-power-factor condition. Detailed analysis and computer simulations show the superiority of the proposed method. The feasibility of the proposed method has been proven via laboratory experiments.