Impedance network design and its critical value prediction of tapped‐inductor single‐stage boost inverter. Issue 6 (1st June 2014)

• Record Type: Journal Article
• Authors: Zhou, Yufei; Huang, Wenxin; Zhao, Jianwu; Zhao, Ping
• Is Part Of: IET power electronics. Volume 7:Issue 6(2014)
• Page Start: 1618
• Page End: 1629
• Publication Date: 2014-06-01
• Subjects: impedance convertors -- invertors -- inductors -- capacitors; critical value prediction -- impedance network design -- high inversion gain tapped‐inductor single‐stage boost inverter -- tapped inductor impedance network -- diode -- voltage‐source inverter -- TISSBI -- DC‐bus -- continuous input current -- reduced capacitor voltage stress -- power conversion process -- steady‐state analysis; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2013.0518
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : This study proposes a high inversion gain single‐stage boost inverter, which introduces a tapped inductor impedance network, including one tapped inductor and two diodes, to add to the front end of traditional voltage‐source inverter, called tapped‐inductor single‐stage boost inverter (TISSBI). The TISSBI has the merits of high inversion gain, common ground of input and dc‐bus, continuous input current and reduced capacitor voltage stress. This study also presents all the possible steady states of the TISSBI proposed. It is shown that, in addition to the desired three steady states, an operating cycle can contain another four abnormal states that do not contribute to the power conversion process. These four states can be avoided by selecting suitable value of capacitance and inductance. By using the equations derived in the steady‐state analysis, this study presents guidelines to design the impedance network accurately. Experimental results are provided to verify the effectiveness of the proposed circuit, the design method of impedance network and demonstrate the appearance of the four states when the capacitors and inductors are smaller than their critical values.