Packed U Cells Multilevel Converter Topology: Theoretical Study and Experimental Validation

In this paper, authors propose a new power multilevel converter topology that is very competitive compared to the existing ones. It consists of packed U cells (PUC). Each U cell consists of an arrangement of two power switches and one capacitor. It offers high-energy conversion quality using a small number of capacitors and power devices and consequently, has a very low production cost. An averaged model of the topology is detailed. The operating principle of the transformerless seven-level inverter is analyzed and detailed. The multilevel sinusoidal modulation has been adapted for use with the PUC-based structure. The control strategy has been designed to reduce the harmonic contents of the load voltage. With such converters, filters' rating is considerably reduced. A comparative study is performed to highlight the advantages of the new packed U cells topology. The operation of the proposed converter topology has been verified through simulation. Experimental validation was performed using DS1103 DSP of dSpace.

[1]  Martin Veenstra,et al.  Alimentation d'onduleurs multiniveaux asymétriques : analyse des possibilités de réalisation et méthodes de répartition de la puissance , 2003 .

[2]  Hirofumi Akagi.  Control Strategy and Site Selection of a Shunt Active Filter for Damping of Harmonic Propagation in Power Distribution Systems , 1997 .

[3]  Fang Zheng Peng,et al.  A multilevel voltage-source inverter with separate DC sources for static VAr generation , 1995, IAS '95. Conference Record of the 1995 IEEE Industry Applications Conference Thirtieth IAS Annual Meeting.

[4]  T.A. Meynard,et al.  Multi-level conversion: high voltage choppers and voltage-source inverters , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[5]  B. Gavaskar Reddy,et al.  Hybrid Cascaded H-Bridge Multilevel-Inverter Induction-Motor-Drive Direct Torque Control for Automotive Applications , 2012 .

[6]  I. Barbi,et al.  Harmonic Voltage Reduction Using a Series Active Filter Under Different Load Conditions , 2006 .

[7]  Chih-Chiang Hua,et al.  A Digital Predictive Current Control With Improved Sampled Inductor Current for Cascaded Inverters , 2009, IEEE Transactions on Industrial Electronics.

[8]  Giri Venkataramanan,et al.  A power electronic transformer (PET) fed nine-level H-bridge inverter for large induction motor drives , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[9]  Sung-Jun Park,et al.  Cascaded Multilevel Inverter Employing Three-Phase Transformers and Single DC Input , 2009, IEEE Transactions on Industrial Electronics.

[10]  Alfred Rufer,et al.  Control of a hybrid asymmetric multilevel inverter for competitive medium-voltage industrial drives , 2003, IEEE Transactions on Industry Applications.

[11]  Alex Q. Huang,et al.  Small-Signal Model-Based Control Strategy for Balancing Individual DC Capacitor Voltages in Cascade Multilevel Inverter-Based STATCOM , 2009, IEEE Transactions on Industrial Electronics.

[12]  P.L. So,et al.  Improvement of power quality using adaptive shunt active filter , 2005, IEEE Transactions on Power Delivery.

[13]  Leopoldo García Franquelo,et al.  Simple Unified Approach to Develop a Time-Domain Modulation Strategy for Single-Phase Multilevel Converters , 2008, IEEE Transactions on Industrial Electronics.

[14]  F. Fnaiech,et al.  A DSP-based implementation of a nonlinear model reference adaptive control for a three-phase three-level NPC boost rectifier prototype , 2005, IEEE Transactions on Power Electronics.

[15]  G.T.R. Das,et al.  A Nine-Level Inverter System for an Open-End Winding Induction Motor Drive , 2006, 2006 1ST IEEE Conference on Industrial Electronics and Applications.

[16]  Hadi Youssef Kanaan,et al.  Real-Time Implementation of a Discrete Nonlinearity Compensating Multiloops Control Technique for a 1.5-kW Three-Phase/Switch/Level Vienna Converter , 2008, IEEE Transactions on Industrial Electronics.

[17]  Leopoldo García Franquelo,et al.  > Replace This Line with Your Paper Identification Number (double-click Here to Edit) < , 2022 .

[18]  Henry Shu-Hung Chung,et al.  A 31-level cascade inverter for power applications , 2002, IEEE Trans. Ind. Electron..

[19]  Anish Gopinath,et al.  Fractal Based Space Vector PWM for Multilevel Inverters—A Novel Approach , 2009, IEEE Transactions on Industrial Electronics.

[20]  Hirofumi Akagi,et al.  New trends in active filters for improving power quality , 1996, Proceedings of International Conference on Power Electronics, Drives and Energy Systems for Industrial Growth.

[21]  Hirofumi Akagi,et al.  A New Neutral-Point-Clamped PWM Inverter , 1981, IEEE Transactions on Industry Applications.

[22]  L.G. Franquelo,et al.  The age of multilevel converters arrives , 2008, IEEE Industrial Electronics Magazine.

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

[24]  Hadi Youssef Kanaan,et al.  Implementation of a New Linear Control Technique Based on Experimentally Validated Small-Signal Model of Three-Phase Three-Level Boost-Type Vienna Rectifier , 2008, IEEE Transactions on Industrial Electronics.

[25]  Samir Kouro,et al.  Unidimensional Modulation Technique for Cascaded Multilevel Converters , 2009, IEEE Transactions on Industrial Electronics.

[26]  Pablo Correa,et al.  Control of a Single-Phase Cascaded H-Bridge Multilevel Inverter for Grid-Connected Photovoltaic Systems , 2009, IEEE Transactions on Industrial Electronics.

[27]  A. Rufer,et al.  Multilevel inverter for power system applications highlighting asymmetric design effects from a supply network point of view , 2003, CCECE 2003 - Canadian Conference on Electrical and Computer Engineering. Toward a Caring and Humane Technology (Cat. No.03CH37436).

[28]  Bor-Ren Lin,et al.  Analysis and operation of hybrid active filter for harmonic elimination , 2002, Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579).