Title :
Power loss comparison of different matrix converter commutation strategies
Author :
Schulte, Thomas ; Schroder, Gunter
Author_Institution :
Inst. for Autom., Drives & Control Syst., Univ. of Siegen, Siegen, Germany
Abstract :
In this paper it is shown, how the power losses of a matrix converter using different commutation strategies can be determined by experimental methods and by simulation models. A comparison of the obtained power losses is presented as the main research result. Basis of this study is a laboratory prototype of a matrix converter, which uses a so-called switchable free-wheeling circuit for load current commutation and for protection purposes. During commutation sequences proceed in the 3×3-matrix the inductive load current is taken over by the free-wheeling circuit without load current interruptions and thus no dangerous overvoltage can occur. A high precision power analyzer is used to gauge the conduction and switching losses of the laboratory prototype. The measurement results are compared to the power losses calculated by a simulated four step commutation strategy. The applied four-step commutation is a commutation procedure, which gets by without additional protection hardware, i.e. the 3×3-matrix does not need to be extended for normal operation. The analysis considers the power losses and the converters efficiency depending on the switching frequency of the space vector modulation.
Keywords :
commutation; losses; matrix convertors; overvoltage; switching convertors; conduction loss; four-step commutation procedure; high precision power analyzer; inductive load current commutation interruption; matrix converter commutation strategy; overvoltage; power loss; protection hardware; space vector modulation; switchable free-wheeling circuit; switching frequency; switching loss; Current measurement; Integrated circuit modeling; Matrix converters; Power dissipation; Semiconductor device measurement; Switches; Switching circuits; Matrix converter; commutation strategies; power losses;
Conference_Titel :
Power Electronics and Motion Control Conference (EPE/PEMC), 2012 15th International
Conference_Location :
Novi Sad
Print_ISBN :
978-1-4673-1970-6
Electronic_ISBN :
978-1-4673-1971-3
DOI :
10.1109/EPEPEMC.2012.6397292