A novel coupled inductor Z-source three-level inverter

IEICE Electronics Express

Hua Liu¹  Yitao Li¹  Xiaogang Wang¹ 

[1] College of Mechanical and Electrical Engineering, Guangzhou University

关键词: Z-source inverter;    coupled inductor;    switched inductor;    three-level;    neutral-point-clamped;   

DOI  :  10.1587/elex.14.20170647

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

A novel Z-source three-level inverter based on coupled inductors is proposed. The two inductors in traditional Z-source impedance network are replaced by two coupled inductors. The operating principle is described and the equations of boost factor and voltage stresses are deduced. Comparisons are made with other Z-source three-level inverters, especially the multicell switched inductor Z-source three-level inverter. The two topologies have same boost factor if a specific condition is met, but the proposed inverter uses less components and therefore the reliability is improved. SVPWM method for conventional three-level NPC inverter is easy to apply to the novel inverter after a simple modification. Simulations are conducted to verify the theoretical analysis.

【 授权许可】

CC BY