Open AccessEmbedded dual switched‐capacitor based continuous input current switched‐inverter for renewable energy application
Author(s) -
Ahmad Anish,
Singh Rajeev Kumar
Publication year - 2019
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.2018.6062
Subject(s) - switched capacitor , renewable energy , dual (grammatical number) , inverter , current (fluid) , capacitor , electrical engineering , computer science , engineering , voltage , art , literature
This study presents a high voltage gain embedded dual switched‐capacitor‐based continuous input current impedance source inverter for renewable energy applications. Renewable energy resources have low‐output voltage generation capability, and the converter needs to operate on the extreme duty cycle for high voltage requirements. To achieve high voltage gain, a conventional impedance source inverter needs to operate on a high duty cycle, which leads to the reduction in modulation index. Operating at a reduced value of modulation index leads to poor inversion operation with poor output power quality. In order to take care of this issue, an embedded dual switched‐capacitor‐based inverter is presented for high voltage gain in low shoot‐through duty cycle. The proposed inverter is suitable for DC–AC power conversions such as solar photovoltaic where a low‐input voltage is available, and it needs to be converted into high DC–AC output voltages. Anatomisation of operating principle, steady‐state analysis, passive design criteria, and comparison are discussed. The proposed inverter also has less capacitor voltage stress, less diode current stress, and higher efficiency than other impedance‐source inverters. The operation of the proposed inverter is verified through simulations and experimental results with a 600 W prototype.