Improved Quasi-Z-Source Inverter Based on Switching Inductor

In order to solve the shortcomings of the traditional quasi-Z-source inverter (qZSI), such as limited boost capability, high voltage stress, and poor output waveform quality, this paper proposes an improved quasi-Z-source inverter based on switched inductors (ISI-qZSI). Through the detailed analysis...

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Bibliographic Details
Published in2025 2nd International Conference on Electrical Technology and Automation Engineering (ETAE) pp. 171 - 175
Main Authors Fang, Xupeng, Zhang, Xinyu, Wang, Jian, Meng, Xiangrui
Format Conference Proceeding
LanguageEnglish
Published IEEE 23.05.2025
Subjects
Boosting
Current ripple
High gain
Inductors
Inverters
Modulation
Quasi-Z-source inverter
Reliability engineering
Stress
Switches
Switching circuits
Switching inductors
Topology
Voltage
Voltage stress
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DOI10.1109/ETAE65337.2025.11089688

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Summary:In order to solve the shortcomings of the traditional quasi-Z-source inverter (qZSI), such as limited boost capability, high voltage stress, and poor output waveform quality, this paper proposes an improved quasi-Z-source inverter based on switched inductors (ISI-qZSI). Through the detailed analysis of its working principle and main performance parameters, alongside the comparison with the quasi-Z-source inverter topology before the improvement, it is verified that the new quasi-Z-source inverter has significantly improved boosting capability and can obtain high boosting capability at a low duty cycle, which broadens the modulation range. It also has the characteristics of low voltage stress and low inductor current ripple. Finally, a simulation verification and an experimental prototype are carried out to demonstrate the superiority and reliability of the ISI-qZSI.
DOI:10.1109/ETAE65337.2025.11089688