Paper Info
Title
Phase-shifted pulse-width-modulation scheme for modular multilevel converters
Abstract
Modular Multilevel Converters (MMCs) are widely used in high power industries due to its flexible expandability, transformer-less configuration and suitability in common dc bus applications, etc. This paper presents the triangular carrier based phase-shifted PWM (PS-PWM) scheme normally adopted in MMCs. The carrier harmonics and their sidebands that introduced by the PS-PWM in the output multilevel waveform and the normalized phase leg voltage are analyzed with the help of the double Fourier series method. The harmonic analysis suggests that the presence of carrier harmonics and their sidebands in output and inserted phase leg waveforms can be decided by number of sub-modules connected in each arm and the angle displacement of triangular carriers in the upper arm and lower arm of the MMC. The mathematical carrier harmonics analysis is verified in PLECS simulations. The simulation results and the theoretical analysis agree with each other very well.
Year
DOI
Venue
2016
10.1109/ICIT.2016.7474779
2016 IEEE International Conference on Industrial Technology (ICIT)
Keywords
Field
DocType
Modular Multilevel Converter (MMC),phase-shifted PWM,carrier harmonics,double Fourier series
DC-BUS,Control theory,Voltage,Waveform,Pulse-width modulation,Electronic engineering,Converters,Control engineering,Harmonics,Fourier series,Harmonic analysis,Engineering
Conference
Citations 
PageRank 
References 
0
0.34
1
Authors
3
Name
Order
Citations
PageRank
Zhu Xu121.71
Shibin Gao2687.43
Shunfeng Yang310.70