NDLI: Ultra-step-up dc–dc converter with low-voltage stress on devices

Content Provider	IET Digital Library
Author	Jalilzadeh, Tohid Rostami, Naghi Babaei, Ebrahim Maalandish, Mohammad
Abstract	This study suggests a novel ultra-step-up dc–dc converter with low normalised voltage stress across the power devices. The proposed converter incorporates the conventional boost converter with a self-lift circuit and charge pump concept and utilises a voltage multiplier cell at the output side. In the input side, two inductors are magnetised during the switch on-time. During the switch off-time, the stored energy in these inductors, charge pump capacitor and input source, is delivered to the load. Accordingly, the proposed converter is capable of providing high voltage gains with a small duty cycle. Besides, the voltage stress across the power devices is low. Therefore, the MOSFET switch with low R DS-on and devices with reduced nominal voltage can be used which in turn reduces the conduction and turn-on losses. The analysis of the voltage and current stresses is accomplished. The circuit performance is compared with other solutions in the literature in terms of voltage gain and normalised voltage stress of the semiconductors. Eventually, to validate the theoretical analysis, the experimental results are given.
Starting Page	345
Ending Page	357
Page Count	13
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 3, Mar (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.5356
Journal	IET Power Electronics
Publisher Date	2018-10-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Analogue Circuit Charge Pump Capacitor Charge Pump Circuit Circuit Performance Conduction Loss Conventional Boost Converter Current Stresses DC-DC Power Converter Field Effect Transistor Switches High Voltage Gain Inductor Input Source Low Normalised Voltage Stress MOSFET Switch Novel Ultra-step-up DC–DC Converter Power Device Power Electronics Power Supply Reduced Nominal Voltage Relay And Switches Self-lift Circuit Small Duty Cycle Supervisory Circuit Switch Off-time Switch On-time Turn-on Loss Voltage Analysis Voltage Gain Voltage Multiplier Cell Voltage Multipliers
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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