Topology and control of a family of non-isolated three-port DC-DC converters with a bidirectional cell

A family of integrated non-isolated three-port DC-DC converters (NI-TPCs) interfacing a renewable source, a storage battery and a load is proposed for stand-alone renewable power system application. The NI-TPCs proposed are generated by introducing a bidirectional cell to the basic DC-DC converters. With the NI-TPC proposed, single stage conversion between any two of the three ports is achieved. A multi-carrier based PWM scheme is proposed and applied to the NI-TPC based upon analysis of the power relations among the three ports. Power management strategy with four regulators achieving maximum power point tracking (MPPT) control of input source, charging control of battery and voltage control of load is proposed for a stand-alone renewable power system. The converters operate in every operation mode and switch between different modes freely and seamlessly. Experimental results with a prototype are given to verify the topology, operation and control of the proposed NI-TPC.

[1]  Robert Grino,et al.  Design, Construction, and Control of a Stand-Alone Energy-Conditioning System for PEM-Type Fuel Cells , 2010, IEEE Transactions on Power Electronics.

[2]  Kai Sun,et al.  A family of non-isolated three-port converters for stand-alone renewable power system , 2011, IECON 2011 - 37th Annual Conference of the IEEE Industrial Electronics Society.

[3]  Runruo Chen,et al.  Full-Bridge Three-Port Converters With Wide Input Voltage Range for Renewable Power Systems , 2012, IEEE Transactions on Power Electronics.

[4]  Zhan Wang,et al.  Integrated MPPT and bidirectional battery charger for PV application using one multiphase interleaved three-port dc-dc converter , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[5]  J.L. Duarte,et al.  Multiport converters for hybrid power sources , 2008, 2008 IEEE Power Electronics Specialists Conference.

[6]  Gui-Jia Su,et al.  A Reduced-Part, Triple-Voltage DC–DC Converter for EV/HEV Power Management , 2009, IEEE Transactions on Power Electronics.

[7]  Wei Jiang,et al.  Multi-port Power Electric Interface for Renewable Energy Sources , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[8]  John Shen,et al.  Control strategy of a multi-port, grid connected, direct-DC PV charging station for plug-in electric vehicles , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[9]  I. Batarseh,et al.  Modeling and Control of Three-Port DC/DC Converter Interface for Satellite Applications , 2010, IEEE Transactions on Power Electronics.

[10]  Gui-Jia Su,et al.  A Multiphase, Modular, Bidirectional, Triple-Voltage DC–DC Converter for Hybrid and Fuel Cell Vehicle Power Systems , 2008, IEEE Transactions on Power Electronics.

[11]  Runruo Chen,et al.  A three-port half-bridge converter with synchronous rectification for renewable energy application , 2011, 2011 IEEE Energy Conversion Congress and Exposition.

[12]  J.L. Duarte,et al.  Transformer-Coupled Multiport ZVS Bidirectional DC–DC Converter With Wide Input Range , 2008, IEEE Transactions on Power Electronics.

[13]  Kai Sun,et al.  An integrated four-port full-bridge converter with DMPPT for renewable power system , 2012, 2012 3rd IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG).

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

[15]  Issa Batarseh,et al.  Dynamic Analysis of Three-Port DC/DC Converter for Space Applications , 2009, 2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition.

[16]  Runruo Chen,et al.  A Family of Three-Port Half-Bridge Converters for a Stand-Alone Renewable Power System , 2011, IEEE Transactions on Power Electronics.

[17]  Haibing Hu,et al.  A three-port Photovoltaic (PV) micro-inverter with power decoupling capability , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[18]  J.W. Kolar,et al.  An Isolated Three-Port Bidirectional DC-DC Converter With Decoupled Power Flow Management , 2008, IEEE Transactions on Power Electronics.