access icon free Class of high boost inverters based on switched-inductor structure

This study deals with a class of the switched-inductor boost inverters (SLBIs) including the DC-linked type, continuous, discontinuous and ripple input current topologies. Compared with the conventional switched boost inverters, the SLBIs add only three diodes and one inductor to obtain a strong boost factor. In comparison with the conventional switched-inductor Z-source inverters (ZSIs) for the same voltage gain at the same modulation indexes, the proposed SLBIs use one more active switch and less passive components which results in reducing the size and cost. Moreover, the efficiency of the proposed inverters is improved in comparison with the conventional switched-inductor ZSIs. Analysis and operating principles are presented. A laboratory prototype was built with 24, 36, 48 V DC input and 127 Vrms output voltage to test high boost ability of the proposed inverters.

Inspec keywords: invertors; power inductors

Other keywords: voltage gain; voltage 36 V; discontinuous current topologies; high boost inverters; switched inductor boost inverters; voltage 24 V; switched inductor structure; DC linked type current topologies; voltage 48 V; ripple input current topologies

Subjects: DC-AC power convertors (invertors); Transformers and reactors

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http://iet.metastore.ingenta.com/content/journals/10.1049/iet-pel.2014.0471
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