A new basic unit for cascaded multilevel inverters with reduced number of power electronic devices

In this paper, a new topology for asymmetrical cascaded multilevel inverter is proposed. The proposed topology consists of series connection of several basic units. Reduction of number of power switches, driver circuits, IGBTs and dc voltage sources are some advantages of the proposed topology in comparison with the conventional cascaded multilevel inverters. In order to generate all output voltage levels, a new algorithm to determine the magnitudes of dc voltage sources is proposed. Finally, to verify the performance of the proposed inverter, the simulation results by using PSCAD/EMTDC software on a 33-level single-phase inverter are used.

[1]  Feel-soon Kang,et al.  H-bridge based multilevel inverter using PWM switching function , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[2]  E. Babaei,et al.  A new topology for multilevel inverter considering its optimal structures , 2013 .

[3]  Marcelo Lobo Heldwein,et al.  Three-Phase Hybrid Multilevel Inverter Based on Half-Bridge Modules , 2012, IEEE Transactions on Industrial Electronics.

[4]  Ebrahim Babaei,et al.  Extended multilevel converters: an attempt to reduce the number of independent DC voltage sources in cascaded multilevel converters , 2014 .

[5]  Ebrahim Babaei,et al.  Asymmetrical multilevel converter topology with reduced number of components , 2013 .

[6]  Hirotaka Koizumi,et al.  A single phase multilevel inverter using switched series/parallel DC voltage sources , 2009 .

[7]  Ebrahim Babaei,et al.  Reduction of dc voltage sources and switches in asymmetrical multilevel converters using a novel topology , 2007 .

[8]  Humberto Pinheiro,et al.  Generalized Carrier-Based Modulation Strategy for Cascaded Multilevel Converters Operating Under Fault Conditions , 2012, IEEE Transactions on Industrial Electronics.

[9]  Rainer Marquardt,et al.  An innovative modular multilevel converter topology suitable for a wide power range , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[10]  E. Babaei,et al.  Back-to-back stacked multicell converter , 2012, 2012 3rd Power Electronics and Drive Systems Technology (PEDSTC).

[11]  E. Babaei,et al.  A Cascade Multilevel Converter Topology With Reduced Number of Switches , 2008, IEEE Transactions on Power Electronics.

[12]  Ebrahim Babaei,et al.  A Single-Phase Cascaded Multilevel Inverter Based on a New Basic Unit With Reduced Number of Power Switches , 2015, IEEE Transactions on Industrial Electronics.

[13]  Olimpo Anaya-Lara,et al.  Modular multilevel inverter: Pulse width modulation and capacitor balancing technique , 2010 .

[14]  Thomas A. Lipo,et al.  A hybrid multilevel inverter topology for drive applications , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[15]  Saad Mekhilef,et al.  Voltage vector control of a hybrid three-stage 18-level inverter by vector decomposition , 2010 .

[16]  Ebrahim Babaei,et al.  Modified Multilevel Inverters Using Series and Parallel Connection of DC Voltage Sources , 2014 .

[17]  Zhengming Zhao,et al.  Grid-connected photovoltaic power systems: Technical and potential problems—A review , 2010 .

[18]  E. Babaei,et al.  A Generalized Cascaded Multilevel Inverter Using Series Connection of Submultilevel Inverters , 2013, IEEE Transactions on Power Electronics.

[19]  Mariusz Malinowski,et al.  A Survey on Cascaded Multilevel Inverters , 2010, IEEE Transactions on Industrial Electronics.

[20]  Bin Wu,et al.  Multilevel Voltage-Source-Converter Topologies for Industrial Medium-Voltage Drives , 2007, IEEE Transactions on Industrial Electronics.