A New Passive Lossless Snubber
Dzhunusbekov E. Orazbayev S.
August 2021Institute of Electrical and Electronics Engineers Inc.
IEEE Transactions on Power Electronics
2021#36Issue 89263 - 9272 pp.
Galvanically isolated photovoltaic (PV) microinverters based on single-stage flyback topology have advantages: simplicity, better reliability, and low cost. But isolated flyback topology comes with voltage stresses on semiconductor switches caused by transformer leakage inductance. An improved regenerative snubber has been proposed to meet the ever-growing demand for higher efficiency of PV microinverters. The proposed topology is the inductor-capacitor-diode (LCD) snubber with flying capacitor modified to reduce circulating currents. Theoretical analysis reveals a number of advantages. Experimental results are presented to verify the performance.
Flyback , LCD snubber , PV microinverter , regenerative flying capacitor snubber
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Laboratory of Advanced Developments in Electronics, Kazakh-British Technical University, Almaty, Kazakhstan
National Nanotechnology Lab, Al-Farabi Kazakh National University, Almaty, Kazakhstan
Laboratory of Advanced Developments in Electronics
National Nanotechnology Lab
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