A family of transformer-less single-switch dual-inductor high voltage gain boost converters is proposed in this article. The proposed configurations can realize high voltage gain with low voltage and current stresses. The voltage gain of the proposed converters is analogous to the switched inductor boost converter; therefore, the proposed boost converters are suitable for high gain applications. The proposed family of converters has low component counts and reduced voltage stress on devices compared to three typical transformer-less single-switch high voltage gain converters including switched inductor boost converter, quadratic boost converter, and quasi-Z-source boost converter. Moreover, the current stress of the front-end diode and the rear-end inductor is also relatively low. Therefore, the conversion efficiency is enhanced while keeping the cost low. The operation principles and steady-state characteristics analysis of the proposed converters under the inductor current continuous conduction mode and continuous bidirectional conduction mode are discussed in detail. A prototype of 300 V, 250 W/100 kHz is developed to verify the performance of the proposed converter. The experimental results substantiate the effectiveness and advantages. The prototype achieves a peak efficiency of 97.5%.

Item Type:	Refereed Article
Keywords:	power converters, DC microgrids, renewable energy systems
Research Division:	Engineering
Research Group:	Electronics, sensors and digital hardware
Research Field:	Power electronics
Objective Division:	Energy
Objective Group:	Energy efficiency
Objective Field:	Industrial energy efficiency
UTAS Author:	Hassan, W (Dr Waqas Hassan)
ID Code:	149224
Year Published:	2021
Web of Science® Times Cited:	11
Deposited By:	Engineering
Deposited On:	2022-03-17
Last Modified:	2022-04-22
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