Title :
Multi-level inverter capable of power factor control with DC link switches
Author :
Sun, Ho-Dong ; Cha, Honnyong ; Kim, Heung-Geun ; Chun, Tae-Won ; Nho, Eui-Cheol
Author_Institution :
Kyungpook Nat. Univ., Daegu, South Korea
Abstract :
This paper proposes a new multi-level inverter topology based on a H-bridge structure with four switches connected to the dc-link. Based on a POD (Phase opposition disposition) modulation method, a new PWM method which requires only one carrier signal is suggested. The switching sequence to balance the capacitor voltage is also considered. In addition to these, the proposed topology requires minimum number of component count to increase the number of voltage level. Operating principle of the proposed inverter is verified through simulation and experiment.
Keywords :
PWM invertors; power control; power factor; DC link switches; H-bridge structure; POD modulation method; PWM method; capacitor voltage; carrier signal; multilevel inverter topology; phase opposition disposition; power factor control; switching sequence; Capacitors; Inverters; Pulse width modulation; Switches; Switching frequency; Topology;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
DOI :
10.1109/APEC.2012.6166040