Author(s)

Xing Cai

Corresponding Author

Xing Cai

Abstract

Since the multi-level diode inverter was put forward, it has solved the voltage resistance problem of power element in the middle and high voltage situation, improved the output waveform of the inverter, and reduced the dV/dt in the switching process. It has become a hot research topic in power transmission and power electronics technology. In this paper, the multi-carrier PWM control method is studied, and the simulation is carried out with the diode-clamp-bit five-level inverter. At the same time, the third harmonic injection method is used to improve the harmonic of the output waveform. Finally, a five-level diode-clamp-bit inverter model is set up with Simulink, and the inverter model is simulated. The results show that the output of the five-level diode clamp-bit inverter is stable and the ideal waveform is obtained.

Keywords

Multi-Level Inverter, Diode Clamped, Pwm, Third Harmonic Injection