Comparative Analysis of Power Loss using Different Modulation Techniques in Modular Multilevel Converter

Preeti V. Kapoor
2019 Helix  
The application of voltage source inverter in medium and high power application is increasing extremely. Multilevel converters reduces the height of voltage steps at converter output and thus also dv/dt and voltage harmonics. In high power applications high efficiency of converter is the most important aspect. Hence the power loss analysis has to be carry out at early stage of converter design. Power loss evaluation of multilevel converter is much more complicated as compared to two level
more » ... to two level inverter. This paper provides the software-based solution to calculate the power loss in semiconductor switch. Modular Multilevel Converter (MMC) an emerging topology in multilevel converter is considered for study. It also presents the comparison of power loss analysis with different pulse width modulation technique eliminating the same order of harmonics. The analysis has been carried out in three phase three level MMC driving high power medium voltage three phase induction motor. The converter is controlled by high switching frequency technique i.e. Sinusoidal Pulse Width Modulation (SPWM) and low switching frequency technique i.e. Selective Harmonic Elimination Pulse Width Modulation (SHE-PWM) technique. Comparison in regards with power loss and converter efficiency has been presented. Simulation has been carried out in MATLAB-SIMULINK providing the software-based solution to find the conduction and switching loss in a switch.
doi:10.29042/2019-5831-5835 fatcat:tu42gi6dujfftabwqt3jvhu6di