Bidirectinal switched boost converter for AC-DC hybrid microgrid

In this paper a bidirectional switched boost converter is proposed. Conventional Z-source converter (ZSC) requires two inductors and two capacitors of equal inductance and capacitance which is difficult to realize in practice. Switched boost converter (SBC) is an improved derivative of ZSC comprising of one inductor and one capacitor which overcomes the stability issues associated with it. But power flow is limited to one direction in case of SBC. In AC-DC hybrid micro grid and in some energy storage applications bidirectional power flow is the most essential requirement. Proposed bidirectional switched boost converter (BSBC) retains the advantage of SBC and provides additional advantage of bidirectional power flow which makes it more suitable for AC-DC hybrid micro grid. Unaltered voltage gain is achieved at the AC bus and DC bus in both the directions of power flow. The Matlab simulation results are shown to verify the operation and theoretical analysis of proposed BSBC converter.

[1]  Adda Ravindranath,et al.  Analysis and PWM Control of Switched Boost Inverter , 2013, IEEE Transactions on Industrial Electronics.

[2]  Avinash Joshi,et al.  A switched-boost topology for renewable power application , 2010, 2010 Conference Proceedings IPEC.

[3]  Tsai-Fu Wu,et al.  A multi-function photovoltaic power supply system with grid-connection and power factor correction features , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[4]  J. Rabkowski.  The bidirectional Z-source inverter for energy storage application , 2007, 2007 European Conference on Power Electronics and Applications.

[5]  F. Peng,et al.  Operation Modes and Characteristics of the Z-Source Inverter With Small Inductance or Low Power Factor , 2005, IEEE Transactions on Industrial Electronics.

[6]  J. Bordonau,et al.  Topologies of single-phase inverters for small distributed power generators: an overview , 2004, IEEE Transactions on Power Electronics.

[7]  Avinash Joshi,et al.  Derivation and characterization of switched-boost inverter , 2011, Proceedings of the 2011 14th European Conference on Power Electronics and Applications.

[8]  Longya Xu,et al.  Dynamic Modeling and Analysis of $Z$ Source Converter—Derivation of AC Small Signal Model and Design-Oriented Analysis , 2007, IEEE Transactions on Power Electronics.

[9]  Jianguo Zhu,et al.  Microgrid topology for different applications in Vietnam , 2012, 2012 22nd Australasian Universities Power Engineering Conference (AUPEC).

[10]  Fang Zheng Peng.  Z-source inverter , 2002 .

[11]  Peng Wang,et al.  A Hybrid AC/DC Microgrid and Its Coordination Control , 2011, IEEE Transactions on Smart Grid.

[12]  F.Z. Peng,et al.  Z-source inverter for adjustable speed drives , 2003, IEEE Power Electronics Letters.

[13]  Adda Ravindranath,et al.  DSP based PWM control of Switched Boost Inverter for DC nanogrid applications , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.