Interleaved Parallel Passive Clamping Flyback Photovoltaic Grid-Connected Microinverter

International Journal of Electrical and Electronics Engineering

© 2024 by SSRG - IJEEE Journal

Volume 11 Issue 6

Year of Publication : 2024

Authors : Zipei Cao, Annisa binti Jamali, Abdullah Yassin, Ya Huang

10.14445/23488379/IJEEE-V11I6P116

How to Cite?

Zipei Cao, Annisa binti Jamali, Abdullah Yassin, Ya Huang, "Interleaved Parallel Passive Clamping Flyback Photovoltaic Grid-Connected Microinverter," SSRG International Journal of Electrical and Electronics Engineering, vol. 11,  no. 6, pp. 141-149, 2024. Crossref, https://doi.org/10.14445/23488379/IJEEE-V11I6P116

Abstract:

Microinverters for standalone photovoltaic modules can effectively overcome the shading issues present in conventional photovoltaic systems. This study provides a detailed introduction to the topology of an interleaved parallel passive clamping flyback microinverter. The microinverter utilizes LCD passive lossless clamping technology to absorb leakage energy and eliminate voltage spikes. By comparing different clamping topologies, the cost advantages of the proposed passive clamping topology are demonstrated. Moreover, a 400 W microinverter experimental platform is built to verify the correctness of the theoretical analysis and simulation results of this topology structure. The prototype experimental results show that the microinverter can output sinusoidal current with good waveform quality, with a Total Harmonic Distortion (THD) of less than 3% and a full-load maximum efficiency of 94.4%. The system operates stably and reliably.

Keywords:

Microinverter, Interleaved flyback topology, Passive clamping, Cost, Experimental platform, MOSFETs.

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