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Energies 2016, 9(11), 871; doi:10.3390/en9110871

Novel Interleaved Converter with Extra-High Voltage Gain to Process Low-Voltage Renewable-Energy Generation

Department of Electronic Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 82445, Taiwan
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Academic Editor: Paul Stewart
Received: 28 July 2016 / Revised: 27 September 2016 / Accepted: 17 October 2016 / Published: 25 October 2016
(This article belongs to the Special Issue Next-Generation Low-Carbon Power and Energy Systems)
View Full-Text   |   Download PDF [2127 KB, uploaded 25 October 2016]   |  

Abstract

This paper presents a novel interleaved converter (NIC) with extra-high voltage gain to process the power of low-voltage renewable-energy generators such as photovoltaic (PV) panel, wind turbine, and fuel cells. The NIC can boost a low input voltage to a much higher voltage level to inject renewable energy to DC bus for grid applications. Since the NIC has two circuit branches in parallel at frond end to share input current, it is suitable for high power applications. In addition, the NIC is controlled in an interleaving pattern, which has the advantages that the NIC has lower input current ripple, and the frequency of the ripple is twice the switching frequency. Two coupled inductors and two switched capacitors are incorporated to achieve a much higher voltage gain than conventional high step-up converters. The proposed NIC has intrinsic features such as leakage energy totally recycling and low voltage stress on power semiconductor. Thorough theoretical analysis and key parameter design are presented in this paper. A prototype is built for practical measurements to validate the proposed NIC. View Full-Text
Keywords: photovoltaic (PV) panel; fuel cells; high step-up converter; interleaved converter; low voltage stress photovoltaic (PV) panel; fuel cells; high step-up converter; interleaved converter; low voltage stress
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MDPI and ACS Style

Shen, C.-L.; Chiu, P.-C.; Lee, Y.-C. Novel Interleaved Converter with Extra-High Voltage Gain to Process Low-Voltage Renewable-Energy Generation. Energies 2016, 9, 871.

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