Impact of modulation schemes on the power capability of high-power converters with low pulse ratios

The design of modulation schemes at low pulse ratios is a known topic. However, most of previous work has focused on Optimized Pulse Patterns, e.g. Selective Harmonic Elimination (SHE). For industrial applications, standard carrier modulators are still highly attractive in many cases. Unfortunately, few papers presented insightful studies on carrier modulators at extremely low pulse ratios. This paper covers this gap. At extremely low pulse ratios, several special phenomena of carrier modulators are observed. Their mechanisms are explained in detail. Moreover, a quantitative comparison between different carrier-based modulation schemes is presented. Based on that, several design criteria for modulators at low pulse ratios are proposed at the end.

[1]  D.G. Holmes,et al.  Opportunities for harmonic cancellation with carrier based PWM for two-level and multi-level cascaded inverters , 1999, Conference Record of the 1999 IEEE Industry Applications Conference. Thirty-Forth IAS Annual Meeting (Cat. No.99CH36370).

[2]  Thomas A. Lipo,et al.  Pulse Width Modulation for Power Converters: Principles and Practice , 2003 .

[3]  H. L. Liu,et al.  Optimal PWM design for high power three-level inverter through comparative studies , 1995 .

[4]  Fang Zheng Peng,et al.  Multilevel inverters: a survey of topologies, controls, and applications , 2002, IEEE Trans. Ind. Electron..

[5]  Joachim Holtz.  Pulsewidth modulation-a survey , 1992, IEEE Trans. Ind. Electron..

[6]  J. K. Steinke,et al.  Switching frequency optimal PWM control of a three-level inverter , 1992 .

[7]  Tobias Geyer,et al.  Modular High-Power Shunt-Interleaved Drive System: A Realization up to 35 MW for Oil and Gas Applications , 2010, IEEE Transactions on Industry Applications.

[8]  G. Sciutto,et al.  A new multilevel PWM method: a theoretical analysis , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[9]  Bin Wu,et al.  Recent Advances and Industrial Applications of Multilevel Converters , 2010, IEEE Transactions on Industrial Electronics.

[10]  R. W. De Doncker,et al.  A fast and precise simulation method for performance screening for high power converter designs , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[11]  Brendan Peter McGrath,et al.  Multicarrier PWM strategies for multilevel inverters , 2002, IEEE Trans. Ind. Electron..

[12]  Joachim Holtz,et al.  Optimal Control of a Dual Three-Level Inverter System for Medium-Voltage Drives , 2008, 2008 IEEE Industry Applications Society Annual Meeting.

[13]  R. Jakob,et al.  New medium-voltage inverter design with very high power density , 2008, 2008 IEEE Power Electronics Specialists Conference.

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

[15]  Holmes,et al.  Pulse width modulation for power converters , 2003 .

[16]  J. Holtz,et al.  Synchronous Optimal Pulsewidth Modulation and Stator Flux Trajectory Control for Medium-Voltage Drives , 2005, IEEE Transactions on Industry Applications.

[17]  Fan Zhang,et al.  Test-bench for very high power variable frequency drives working under constrained grid conditions , 2013, 2013 IEEE Energy Conversion Congress and Exposition.

[18]  D. G. Holmes,et al.  Optimal pulse-width modulation for three-level inverters , 2005, IEEE Transactions on Power Electronics.

[19]  Baoming Ge,et al.  Medium-Voltage Multilevel Converters—State of the Art, Challenges, and Requirements in Industrial Applications , 2010, IEEE Transactions on Industrial Electronics.