DC-링크 전압균형과 소자의 최소 온/오프 시간을 고려한 3-레벨 인버터의 PWM 기법 및 구현

A New PWM Method and its Implementation for a 3-Level Inverter Considering DC-Link Voltage Balancing and Minimum ON/Off Time

In this paper, we present a new SVPWM strategy for a 3-level inverter. This SVPWM method is easily implemented without switching table like SVPWM. In addition, with proposed method, we can also keep the voltage balancing of DC-link capacitors and guarantee minimum on/off time of the devices. The principle of the proposed SVPWM method is described in detail, and its implementation method is also proposed. The usefulness of the proposed SVPWM method is verified through the simulation using MATLAB/Simulink.