High Step-Up Bidirectional Isolated Converter With Two Input Power Sources

The objective of this paper is to develop a high step-up isolated converter with two input power sources. The proposed converter has two input ports for simultaneously converting two different input power sources with low voltages to a stable output power with a high voltage. Moreover, the demand of bidirectional power flow, which is dependent on the power management for charging and discharging power storage mechanisms, can also be satisfied in the proposed converter. According to various situations, the operational states of the proposed converter can be divided into three states, including a stand-alone state, a united power supply state, and a charge and discharge state. The effectiveness of the designed circuit topology is verified by experimental results, and the goals of high-efficiency conversion, high step-up ratio, and bidirectional power flow can be achieved by the proposed converter operation.

[1]  Rong-Jong Wai,et al.  High-Efficiency Bidirectional Converter for Power Sources With Great Voltage Diversity , 2007, IEEE Transactions on Power Electronics.

[2]  G.J. Ball,et al.  Distributed resources standards , 2006, IEEE Industry Applications Magazine.

[3]  Jin-Hong Jeon,et al.  Dynamic Modeling and Control of a Grid-Connected Hybrid Generation System With Versatile Power Transfer , 2008, IEEE Transactions on Industrial Electronics.

[4]  Jih-Sheng Lai,et al.  High-Power Density Design of a Soft-Switching High-Power Bidirectional DC-DC Converter , 2006 .

[5]  Rong-Jong Wai,et al.  High-efficiency single-stage bidirectional converter with multi-input power sources , 2007 .

[6]  Yaow-Ming Chen,et al.  Multi-Input Inverter for Grid-Connected Hybrid PV/Wind Power System , 2007, IEEE Transactions on Power Electronics.

[7]  Marcello Mezaroba,et al.  Step-Up/Step-Down DC–DC ZVS PWM Converter With Active Clamping , 2008, IEEE Transactions on Industrial Electronics.

[8]  L. Solero,et al.  Design of multiple-input power converter for hybrid vehicles , 2004, IEEE Transactions on Power Electronics.

[9]  F. Blaabjerg,et al.  Power electronics as efficient interface in dispersed power generation systems , 2004, IEEE Transactions on Power Electronics.

[10]  Douglas J. Nelson,et al.  Energy Management Power Converters in Hybrid Electric and Fuel Cell Vehicles , 2007, Proceedings of the IEEE.

[11]  M. Marchesoni,et al.  New DC–DC Converter for Energy Storage System Interfacing in Fuel Cell Hybrid Electric Vehicles , 2007, IEEE Transactions on Power Electronics.

[12]  Caisheng Wang,et al.  Power Management of a Stand-Alone Wind/Photovoltaic/Fuel Cell Energy System , 2008, IEEE Transactions on Energy Conversion.

[13]  Fred C. Lee,et al.  A soft-switched, full-bridge boost converter employing an active-clamp circuit , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[14]  Rong-Jong Wai,et al.  High-Performance Stand-Alone Photovoltaic Generation System , 2008, IEEE Transactions on Industrial Electronics.

[15]  S. Al-Hallaj.  More than enviro-friendly: renewable energy is also good for the bottom line , 2004 .

[16]  J.L. Duarte,et al.  Three-Port Triple-Half-Bridge Bidirectional Converter With Zero-Voltage Switching , 2008, IEEE Transactions on Power Electronics.

[17]  Y.-M. Chen,et al.  An Active-Clamp Push–Pull Converter for Battery Sourcing Applications , 2008, IEEE Transactions on Industry Applications.

[18]  Yim-Shu Lee,et al.  A Four-Phase Forward Converter Using an Integrated Transformer , 2008, IEEE Transactions on Industrial Electronics.

[19]  G. Martin.  Renewable energy gets the "green" light in Chicago , 2003 .

[20]  Yu-Lung Ke,et al.  High-Efficiency and Low-Stress ZVT–PWM DC-to-DC Converter for Battery Charger , 2008, IEEE Transactions on Industrial Electronics.

[21]  Tore Undeland,et al.  Power Electronics: Converters, Applications and Design , 1989 .

[22]  Jorge L. Duarte,et al.  Line-Interactive UPS Using a Fuel Cell as the Primary Source , 2008, IEEE Transactions on Industrial Electronics.

[23]  Ingeniería Electrónica.  Soft Switching Bidirectional Converter for Battery Discharging-Charging , 2006 .

[24]  Rong-Jong Wai,et al.  Grid-Connected Photovoltaic Generation System , 2008, IEEE Transactions on Circuits and Systems I: Regular Papers.

[25]  Yung-Ruei Chang,et al.  High-Efficiency Power Conversion System for Kilowatt-Level Stand-Alone Generation Unit With Low Input Voltage , 2008, IEEE Transactions on Industrial Electronics.

[26]  P. Fairley,et al.  The greening of GE [alternative energy] , 2005, IEEE Spectrum.