Voltage balancing characteristics for a cascaded H-bridge multi-level StatCom employing space vector modulation

Author

Townsend, Christopher D. ; Cox, S.M. ; Watson, Alan J. ; Summers, T.J. ; Betz, R.E. ; Clare, Jon C.

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Univ. of Newcastle, Newcastle, NSW, Australia

fYear

2012

fDate

4-6 Sept. 2012

Abstract

Employing space vector modulation in a multi-level H-bridge StatCom (H-StatCom) can provide an excellent trade-off between harmonic performance and switching frequency. However the nature of the techniques used to balance the capacitor voltages in this modulation strategy are heuristic in nature, with their stability and balancing characteristics being difficult to quantify. This paper develops a method to investigate the likelihood that the capacitor voltages remain balanced for the operating modes and system parameters typical in H-StatCom applications.

Keywords

power system harmonics; power system stability; static VAr compensators; switching convertors; H-STATCOM; capacitor voltage balance characteristics; cascaded H-bridge multilevel STATCOM; harmonic performance; multilevel cascaded H-bridge converter; space vector modulation strategy; stability characteristics; switching frequency; Capacitors; Modulation; Stability analysis; Switches; Vectors; Voltage control; Voltage measurement; Modulation strategy; Multilevel converters; Static Synchronous Compensator (STATCOM);

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Motion Control Conference (EPE/PEMC), 2012 15th International

Conference_Location

Novi Sad

Print_ISBN

978-1-4673-1970-6

Electronic_ISBN

978-1-4673-1971-3

Type

conf

DOI

10.1109/EPEPEMC.2012.6397320

Filename

6397320