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Performance and cost comparison of NPC, FC and SCHB multilevel converter topologies for high-voltage applications

Conference Paper


Abstract


  • The rapid increase in global energy consumption and the impact of greenhouse gas emissions have accelerated the renewable energy technology into a more competitive area. Due to the variable nature of renewable energy resources and power demand by the consumers, grid based renewable generation has gained significant popularity in the world. High-voltage converter can interconnect the renewable systems to the grid directly without introducing a lossy, costly and bulky transformer. Three popular multilevel converter topologies: Neutral Point Clamped (NPC), Flying Capacitor (FC) and Series Connected H-Bridge (SCHB) have successfully made their way into the industry and therefore can be considered a mature and proven technology for low and medium voltage applications. But most of them are not suitable for high-voltage applications. This paper presents the comparison of a Five-Level (5L)-NPC, a 5L-FC, a 5L-SCHB, an Eleven-Level (11L)-NPC, an 11L-FC and an 11L-SCHB topologies for an 11 kV Voltage Source Converter (VSC). The comparison is made in terms of number of semiconductors, semiconductor cost, Total Harmonic Distortion (THD), filter size and control complexity.

UOW Authors


  •   Islam, Md Rabiul
  •   Guo, Youguang (external author)
  •   Zhu, Jianguo G. (external author)

Publication Date


  • 2011

Citation


  • M. Islam, Y. Guo & J. Guo. Zhu, "Performance and cost comparison of NPC, FC and SCHB multilevel converter topologies for high-voltage applications," in International Conference on Electrical Machines and Systems (ICEMS 2011), 2011, pp. 1-6.

Scopus Eid


  • 2-s2.0-83355174895

Start Page


  • 1

End Page


  • 6

Place Of Publication


  • United States

Abstract


  • The rapid increase in global energy consumption and the impact of greenhouse gas emissions have accelerated the renewable energy technology into a more competitive area. Due to the variable nature of renewable energy resources and power demand by the consumers, grid based renewable generation has gained significant popularity in the world. High-voltage converter can interconnect the renewable systems to the grid directly without introducing a lossy, costly and bulky transformer. Three popular multilevel converter topologies: Neutral Point Clamped (NPC), Flying Capacitor (FC) and Series Connected H-Bridge (SCHB) have successfully made their way into the industry and therefore can be considered a mature and proven technology for low and medium voltage applications. But most of them are not suitable for high-voltage applications. This paper presents the comparison of a Five-Level (5L)-NPC, a 5L-FC, a 5L-SCHB, an Eleven-Level (11L)-NPC, an 11L-FC and an 11L-SCHB topologies for an 11 kV Voltage Source Converter (VSC). The comparison is made in terms of number of semiconductors, semiconductor cost, Total Harmonic Distortion (THD), filter size and control complexity.

UOW Authors


  •   Islam, Md Rabiul
  •   Guo, Youguang (external author)
  •   Zhu, Jianguo G. (external author)

Publication Date


  • 2011

Citation


  • M. Islam, Y. Guo & J. Guo. Zhu, "Performance and cost comparison of NPC, FC and SCHB multilevel converter topologies for high-voltage applications," in International Conference on Electrical Machines and Systems (ICEMS 2011), 2011, pp. 1-6.

Scopus Eid


  • 2-s2.0-83355174895

Start Page


  • 1

End Page


  • 6

Place Of Publication


  • United States