NDLI: Analysis and implementation of a novel high step-up DC–DC converter with low switch voltage stress and reduced diode voltage stress

Content Provider	IET Digital Library
Author	Chen, Yie Tone Lu, Zong Xing Liang, Ruey Hsun Hung, Chung Wen
Abstract	A new high step-up dc–dc converter is proposed in this study. This new high step-up converter utilises the input voltage, clamped-capacitor, and the secondary side of the coupled-inductor to charge the switched-capacitor and the secondary side of the coupled inductor also charges two multiplier capacitors in parallel during the turn-on interval of the switch. The input voltage, coupled-inductor, and multiplier capacitors are in series connection to the output to accomplish the purpose of high voltage gain during the turn-off interval of the switch. By adjusting the turns ratio of the coupled inductors, the proposed circuit does not need to be operated at high duty cycle to achieve the high voltage gain. The voltage stress of the switch and diodes can be decreased to cut down the cost. Moreover, the energy of the leakage inductance can be recovered to reduce the voltage spike of the switch. Therefore, the switch with lower conduction resistance can be applied to reduce the conduction loss and increase the efficiency. Finally, simulation and experiments are conducted. A prototype circuit with input voltage of 24 V, output voltage of 400 V, and output power of 200 W is implemented to validate the property of the proposed converter.
Starting Page	2003
Ending Page	2012
Page Count	10
ISSN	17554535
Volume Number	9
e-ISSN	17554543
Issue Number	Issue 9, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/9/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2015.0784
Journal	IET Power Electronics
Publisher Date	2016-07-27
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Clamped-capacitor Conduction Loss Reduction Conduction Resistance Coupled-inductor DC-DC Power Converter Duty Cycle High Step-up DC–DC Converter Leakage Inductance Low Switch Voltage Stress Multiplier Capacitor Power 200 W Power Capacitor Reduced Diode Voltage Stress Switched-capacitor Turn-off Interval Voltage 24 V Voltage 400 V Voltage Gain Voltage Spike
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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