access icon free Very high gain three-phase indirect matrix converter with two Z-source networks in its structure

© The Institution of Engineering and Technology
Received 14/05/2016, Accepted 15/12/2016, Revised 16/10/2016, Published 20/12/2016

Nowadays, expansion of new energy sources and the necessity of integrating them with the utility grid require more advanced power electronic converters. Matrix converters (MCs) and indirect matrix converters (IMCs) are recent solutions, which offer direct AC-to-AC conversion without the need for bulky capacitors. The main drawback associated to these converters is the limited voltage conversion ratio to 86.6%. Recently, many researchers focused on combination of the conventional IMCs and recently proposed Z-source (ZS) converters to attain higher voltage conversion ratios. The unique feature of the ZS converter is its ability to change the output voltage amplitude from zero to infinite, theoretically. Based on the previously proposed successful ZS converters, this study proposes a novel combination of two ZS networks with an IMC to achieve a very high voltage gain for practical application of integrating the renewable energy sources to the grid. Simulation results confirm the proper operation of the proposed combined converter topology.

Inspec keywords: AC-AC power convertors; matrix convertors

Other keywords: output voltage amplitude; power electronic converters; Z-source networks; IMC; very-high-gain three-phase indirect matrix converter; utility grid; renewable energy sources; Z-source converters; direct AC-to-AC conversion; ZS converter

Subjects: AC-AC power convertors

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