A Common Grounded Z-Source DC-DC Converter With High Voltage Gain

In this paper, a common grounded Z-source dc-dc converter with high voltage gain is proposed for photovoltaic (PV) applications, which require a relatively high output-input voltage conversion ratio. Compared with the traditional Z-source dc-dc converter, the proposed converter, which employs a conv...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2016-05, Vol.63 (5), p.2925-2935
Main Authors: Shen, Hanyun, Zhang, Bo, Qiu, Dongyuan, Zhou, Liping
Format: Article
Language:English
Subjects:
Capacitors
Common ground
Converters
DC to DC
dc-dc converter
DC-DC power converters
Design analysis
Electric converters
Gain
high voltage gain
High voltages
Inductors
Inverters
Photovoltaic cells
Power systems
Solar cells
Stress
Switches
Z-source
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Description
Summary:In this paper, a common grounded Z-source dc-dc converter with high voltage gain is proposed for photovoltaic (PV) applications, which require a relatively high output-input voltage conversion ratio. Compared with the traditional Z-source dc-dc converter, the proposed converter, which employs a conventional Z-source network, can obtain higher voltage gain and provide the common ground for the input and output without any additional components, which results in low cost and small size. Moreover, the proposed converter features low voltage stresses of the switch and diodes. Therefore, the efficiency and reliability of the proposed converter can be improved. The operating principle, parameters design, and comparison with other converters are analyzed. Simulation and experimental results are given to verify the aforementioned characteristics and theoretical analysis of the proposed converter.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2016.2516505