A novel neutral point potential stabilization technique using the information of output current polarities and voltage vector


Yamanaka K., Hava A. , Kirino H., Tanaka Y., Koga N., Kume T.

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol.38, no.6, pp.1572-1580, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 6
  • Publication Date: 2002
  • Doi Number: 10.1109/tia.2002.804761
  • Title of Journal : IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
  • Page Numbers: pp.1572-1580

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.