A Single-Stage Neutral Point Clamp Inverter with Reduced Voltage Stresses on Power Elements

Authors

  • Duc Tri Do Ho Chi Minh City University of Technology and Education

Keywords:

Quasi-switched boost inverter, PWM strategy, Shoot-through, Three-level inverter, T-type inverter

Abstract

In this paper, a topology incorporating the DC-link type quasi-switch boost network with the traditional three-level neutral point clamped inverter is presented. The third harmonic injection method is proposed to provide some benefits such as: enhancing the modulation index or improving the voltage gain. Moreover, the stress voltage on power devices like capacitors, diodes, and switches is decreased significantly. The mathematic analysis is detailed to produce the equations output voltage for the proposed converter. The comparison between the proposed topology to conventional quasi-switch boost neutral point clamped inverter topology is carried out. Simulation and experimental results are conducted to verify the accuracy of inverter operating theory.

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Published

2022-03-16

How to Cite

Do, D. T. (2022). A Single-Stage Neutral Point Clamp Inverter with Reduced Voltage Stresses on Power Elements. Measurement, Control, and Automation, 2(2), 24-31. Retrieved from https://mca-journal.org/index.php/mca/article/view/47

Issue

Section

Power Electronics