Tutorial "time averaging methods in PWM multilevel power converters analysis: Application to voltage quality evaluation and flying capacitors average voltage balancing dynamics"

Alex Ruderman, Boris Reznikov, Steven Thielemans

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

• Time averaging is a powerful tool for multilevel converters analysis • Using time-averaging techniques, we obtained simple closed-form asymptotic voltage quality expressions for multilevel converters with an arbitrary number of levels and (odd) number of phases • Ripple voltage Normalized Mean Square criterion is related to iron core (eddy current) loss induced by power converter switching • Applied to FCC voltage balancing dynamics, time averaging methods delivered simple closed form expressions that reveal dependences on load parameters, switching frequency, capacitances, DC voltage command / AC modulation index, and modulation strategies • Time averaging methods are true analytical that stimulates engineering intuition and creativity and a good example is our simple elegant Flying Capacitor self-precharge solution - precharging capacitors using natural voltage balancing mechanism while keeping load current zero on average • Flying Capacitor Converter future research directions - accounting for other loss mechanisms (iron loss), improved (optimal) voltage balancing PWM strategies, generalization for 3- and multiphase converters and more.

Original languageEnglish
Title of host publicationISIE 2010 - 2010 IEEE International Symposium on Industrial Electronics
Pages4468-4531
Number of pages64
DOIs
Publication statusPublished - Dec 27 2010
Event2010 IEEE International Symposium on Industrial Electronics, ISIE 2010 - Bari, Italy
Duration: Jul 4 2010Jul 7 2010

Publication series

NameIEEE International Symposium on Industrial Electronics

Other

Other2010 IEEE International Symposium on Industrial Electronics, ISIE 2010
CountryItaly
CityBari
Period7/4/107/7/10

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering

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