DVR based cascaded multilevel Z-source inverter

This paper proposes a new topology of Z-source based cascaded multilevel inverter. In this topology the output voltage is not limited to DC voltage source similar to traditional cascade multilevel inverter and can be increased with Z network shoot-through state control. Besides, it is more reliable against short circuit. Performance of suggested topology in the closed-loop control scheme is described in the Dynamic Voltage Restorer (DVR) structure. Compensation capability of the proposed DVR increases. The operating principle, switching algorithm and characteristics of proposed topology are described in this paper. The performance of suggested inverter and switching algorithm are validated with simulation results using MATLAB/SIMULINK software.

[1]  A. K. Al-Othman,et al.  Elimination of harmonics in multilevel inverters with non-equal dc sources using PSO , 2009 .

[2]  Seyed Hossein Hosseini,et al.  Verification of a new energy control strategy for dynamic voltage restorer by simulation , 2006, Simul. Model. Pract. Theory.

[3]  E. Berkouk,et al.  Harmonic elimination in diode-clamped multilevel inverter using evolutionary algorithms , 2008 .

[4]  Arindam Ghosh,et al.  Critical load bus voltage control using DVR under system frequency variation , 2008 .

[5]  F.Z. Peng,et al.  Comparison of Traditional Inverters and $Z$ -Source Inverter for Fuel Cell Vehicles , 2004, IEEE Transactions on Power Electronics.

[6]  A. Das,et al.  Residential solar power systems using Z - source inverter , 2008, TENCON 2008 - 2008 IEEE Region 10 Conference.

[7]  L.M. Tolbert,et al.  Maximum constant boost control of the Z-source inverter , 2004, Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting..

[8]  Keith Corzine,et al.  Control of cascaded multi-level inverters , 2003, IEEE International Electric Machines and Drives Conference, 2003. IEMDC'03..

[9]  Hae-Kon Nam,et al.  A novel switching strategy for improving modularity and manufacturability of cascaded-transformer-based multilevel inverters , 2005 .

[10]  S. Chowdhury,et al.  Performance analysis of Z - source Inverter based ASD system with reduced harmonics , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.