Design of a DSTATCOM using a 5-level cascade asymmetric multilevel converter

The power quality in distribution systems is affected by the pollution introduced by the customers. One way to improve the power quality is using a DSTATCOM to compensate reactive power and harmonics. The use of multilevel inverters in medium voltage applications is a good solution. In particular, the cascaded asymmetric multilevel converter (CAMC) appears as a very attractive alternative among the 5-level converters for this application. In this paper, the design of a DSTATCOM employing a CAMC in a medium voltage distribution power system, is presented. The model and the control strategy are discussed in d-q coordinates. The performance of the proposed compensator is tested with SPICE simulations.

[1]  Junfei Hu,et al.  Active power filtering by a flying-capacitor multilevel inverter with capacitor voltage balance , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[2]  H. Akagi,et al.  Control and Performance of a Transformerless Cascade PWM STATCOM With Star Configuration , 2007, IEEE Transactions on Industry Applications.

[3]  R.W. De Doncker,et al.  Comparison of Hard-Switched Multi-Level Inverter Topologies for STATCOM by Loss-Implemented Simulation and Cost Estimation , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

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

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

[6]  M.I. Valla,et al.  Analysis of a Cascade Asymmetric Topology for Multilevel Converters , 2007, 2007 IEEE International Symposium on Industrial Electronics.

[7]  Maria Ines Valla,et al.  Five-level cascade asymmetric multilevel converter , 2010 .

[8]  Luis Marroyo,et al.  Individual Voltage Balancing Strategy for PWM Cascaded H-Bridge Converter-Based STATCOM , 2008, IEEE Transactions on Industrial Electronics.

[9]  H. Tuusa,et al.  Comparison of Five-Level Voltage-Source Inverter Based STATCOMs , 2007, 2007 Power Conversion Conference - Nagoya.

[10]  Hirofumi Akagi,et al.  A 6.6-kV transformerless STATCOM based on a five-level diode-clamped PWM converter: system design and experimentation of a 200-V, 10-kVA laboratory model , 2005 .

[11]  S. Kouro,et al.  Control of an hybrid multilevel inverter for current waveform improvement , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[12]  Cassiano Rech,et al.  Hybrid Multilevel Converters: Unified Analysis and Design Considerations , 2007, IEEE Transactions on Industrial Electronics.