Current-fed interleaved phase-modulated single-phase unfolding inverter: Analysis, design, and experimental results
Prasanna, U.R. Rathore, A.K.
Prasanna, U.R.
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Abstract
This paper presents a novel direct current-fed interleaved phase-modulated single-phase unfolding inverter for fuel-cell applications. Two active-clamped zero-voltage switching current-fed half-bridge isolated converters are interleaved in parallel input and series output configuration. Phase modulation is proposed to control these two converter cells, which generate a rectified sinusoidal pattern at the dc link. A simple H-bridge unfolding dc-ac inversion is used to produce single-phase sine voltage at line frequency switching using square-wave control. This not only simplifies the inversion stage in terms of modulation but also reduces the switching losses. Direct front-end current-fed based unfolding inverter is not reported in literature yet. Detailed analysis and design of the proposed direct current-fed single-phase unfolding inverter has been presented. Simulation waveforms using PSIM 9.0.4 are given to verify the presented analysis and design. Experimental results on a laboratory prototype rated at 200 W are demonstrated to support the investigation, to validate the accuracy of the proposed analysis and design, and to test the performance. © 1982-2012 IEEE.
Keywords
Current-fed dc/dc converter, Fuel cells, High-frequency (HF), Inverter, Photovoltaic (PV)
Source Title
IEEE Transactions on Industrial Electronics
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Date
2014
DOI
10.1109/TIE.2013.2245621
Type
Article