Title :
A new four-level π-type converter with neutral point voltage balancing capability
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Bristol, Bristol, UK
Abstract :
This paper has proposed a new four-level converter structure for low-voltage applications. The converter has low output harmonics and neutral-point-voltage-balancing capability. The switching states of the converter have been analyzed and the current flow path has been identified. A modulation and control algorithm has been devised to control the neutral points´ voltage and flying capacitor voltage, which is validated by simulations results.
Keywords :
switching convertors; voltage control; current flow path; flying capacitor voltage control algorithm; four-level π-type converter structure; low output harmonics; neutral point voltage balancing capability; neutral point voltage control algorithm; switching states; Capacitors; Modulation; Power harmonic filters; Switches; Topology; Vectors; Voltage control;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2014 IEEE
Conference_Location :
Pittsburgh, PA
DOI :
10.1109/ECCE.2014.6954092
