Open AccessSwitched capacitor‐based continuous input current high step‐up impedance source DC–DC converter
Author(s) -
Ahmad Anish,
Shiluveru Kharan,
Singh Rajeev Kumar
Publication year - 2020
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2020.0862
Subject(s) - inductor , duty cycle , capacitor , converters , switched capacitor , microgrid , boost converter , ćuk converter , voltage source , electrical impedance , electronic engineering , electrical engineering , voltage , power (physics) , computer science , engineering , physics , quantum mechanics
The conventional converter needs to be operated at a high duty cycle to achieve maximum possible voltage gain. This leads to severe reverse recovery of switches, increases losses, and reduces efficiency. This study presents a modified switched‐capacitor‐based high gain continuous input current quasi‐Z‐source converter (qZSC) for DC microgrid applications. The proposed converter utilises the embedded switched‐capacitor techniques and can give a high voltage gain with a low duty ratio compared to the conventional converters. The proposed converter also experiences less capacitor voltage and inductor current stresses compared to the conventional Z‐source converters. This facilitates the use of lower‐rated capacitors and inductors for higher power applications. Detailed steady‐state, small‐signal, and power loss analysis of proposed qZSC is discussed in this study. A prototype of 100 W is designed and implemented using TI TMS320F28335 Experimenter Kit to verify the operation of the proposed converter.