This paper proposes a synchronized switching technique to remove unexpected output pulses in Hybrid Active Neutral-Point Clamped (ANPC) inverters. The unexpected output pulse is generated at zero intersection point of the output voltage. Whereas, the reason of this pulse is due to the sudden effect of the deadtime on the switching time, in addition to another causes such as; the characteristic of digital calculation and etc. The unexpected output pulse distorts the output voltage, output current, and degrades the efficiency of the hybrid ANPC converter. Moreover, the unexpected output pulse may stress the switching devices as this pulse has momentary metrics. Therefore, the unexpected output pulses have to be removed. In these regards, A synchronized switching technique is proposed in this paper, while the proposed method is verified by simulation results.
This research was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT for First-Mover Program for Accelerating Disruptive Technology Development and \u201cHuman Resources Program in Energy Technology\u201d of the Korea Institute of Energy Technology Evaluation and Planning (KETEP), granted financial resource from the Ministry of Trade, Industry & Energy, Republic of Korea. (NRF-2018M3C1B9088457, No. 20194030202370) REFERENCES