A Detailed Power Loss Analysis of Modular Multilevel Converter

Erturk F., HAVA A. M.

30th Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Charlottetown, Canada, 15 - 19 March 2015, pp.1658-1665 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Charlottetown
  • Country: Canada
  • Page Numbers: pp.1658-1665
  • Keywords: modular multilevel converter, phase disposition (PD) PWM, phase shift PWM, power loss, sorting algorithm
  • Middle East Technical University Affiliated: Yes


This paper thoroughly examines the semiconductor power loss characteristics of modular multilevel converters (MMC). Power loss behavior is examined under different pulse width modulation (PWM) methods and operating conditions. The effects of stored energy level, circulating current control utilization, power factor and submodule voltage balancing method on power loss are studied. Furthermore, unbalanced power losses and specific semiconductor stresses within a submodule are visualized by investigating the loss distribution in a submodule. The paper aids in understanding and design of MMC converter modules, selecting PWM and control methods with power loss perspective.