Abstract

A novel A-source impedance network is proposed in this paper using an autotransformer for realizing converters that demand a very high dc voltage gain. The network utilizes a minimal turns ratio compared to other Magnetically Coupled Impedance Source (MCIS) networks to attain high voltage gain. In addition, the proposed converter draws a continuous current from the source, and hence it is suitable for many types of renewable energy sources. This voltage boost capability has been demonstrated by mathematical derivations, and it is also realized in experiments with an example single-switch 50 kHz, 200 W dc-dc converter.

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