Seamless dynamic model for DC-DC converters applicable to bi-directional power transfer

In this paper, seamless model of bi-directional DC-DC converter which is applicable to bi-directional power transfer is proposed. Conventional modeling method of bi-directional DC-DC converter is complex, because different models are needed for different directions of power flow. On the other hand, seamless model can be applied for both directions of power flow. Seamless circuit model is expressed by voltage source and bi-polar current source, and polarity of current source shows direction of power flow. In this model, control loop need to be switched by direction of power flow. Therefore analyzing and controlling bi-directional DC-DC converter is much easier than conventional way. Seamless dynamic model are derived by state-space averaging method. Analytical, simulated, experimental results are investigated, and availability of seamless model is suggested.

[1]  Hiroaki Nishi,et al.  Construction of energy measuring system in a University for Cluster Energy Management System , 2010, IECON 2010 - 36th Annual Conference on IEEE Industrial Electronics Society.

[2]  Sihun Yang,et al.  Dynamic characteristics model of bi-directional DC-DC converter using state-space averaging method , 2012, Intelec 2012.

[3]  Sihun Yang,et al.  Seamless dynamic model for bi-directional DC-DC converter , 2013, 2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS).

[4]  Sun.  A Distributed Control Strategy based on DC Bus Signaling for Modular Photovoltaic Generation Systems with Battery Energy Storage , 2011 .

[5]  Hui Li,et al.  Dynamic modeling and control design for bi-directional DC-DC converter for fuel cell vehicles with battery as energy storage element , 2005, Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005..