An Efficient Resonant Pole Inverter Without Constant Circulating Current Loss in the Auxiliary Circuit

An efficient resonant pole inverter is presented in this brief for the efficiency optimization. Main switches and auxiliary switches can acquire zero-voltage switching and zero-current switching, respectively, achieving the remarkable decline of switching loss. In especial, no constant circulating c...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2023-06, Vol.70 (6), p.2021-2025
Main Authors: Wang, Qiang, Wang, Xinmiao, Jiang, Xuhang, Wang, Youzheng
Format: Article
Language:English
Subjects:
Circuits
circulating current
Control systems
Current loss
Efficient
Electric potential
Inductors
inverter
Inverters
Optimization
Resonant inverters
RLC circuits
soft-switching
Switches
Switching
Switching circuits
Switching loss
Voltage
Waveforms
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Summary:An efficient resonant pole inverter is presented in this brief for the efficiency optimization. Main switches and auxiliary switches can acquire zero-voltage switching and zero-current switching, respectively, achieving the remarkable decline of switching loss. In especial, no constant circulating current flows through resonant inductors after the voltage across resonant capacitors parallel with main switches stops changing in a switching cycle, eliminating constant circulating current loss of resonant inductors in the novel inverter. Each working state in a switching period is illustrated in this brief. The relative experimental waveform implies that switching devices attain soft-switching. Furthermore, the efficiency of the novel inverter achieves 99.0% at rated output power. Thus, the novel inverter can have efficiency superiority over other resonant pole inverters.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2022.3228785