A VSC transmission system using flying capacitor multilevel converters and selective harmonic elimination PWM control
Xu, L. and Agelidis, V.G. (2005) A VSC transmission system using flying capacitor multilevel converters and selective harmonic elimination PWM control. In: 7th International Power Engineering Conference, IPEC2005, 29 November - 2 December, Singapore.
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A transmission system based on voltage-source three-level flying capacitor (FC) multilevel converters with selective harmonic elimination pulse-width modulation (SHE-PWM) control is presented in this paper. The generation of the switching patterns for each power device is described taking into account the natural balancing of the FC voltages. A new and simple control method for balancing the FC voltages of the FC converter when using SHE-PWM is proposed which is based on the small change of the firing angle according to the load current polarity. Implementation of the SHE-PWM with capacitor voltage balancing is provided. Simulation studies for a 300MW/±150kV transmission system are presented to confirm the satisfactory performance of the proposed system.
|Publication Type:||Conference Paper|
|Murdoch Affiliation:||School of Engineering Science|
|Copyright:||© 2005 IEEE|
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