Cascade H-Bridge inverter with high voltage gain
Corressponding author's email:
tridd@hcmute.edu.vnKeywords:
Cascaded H-bridge inverter, boost inverter, five-level inverter, shoot-through state (ST), quasi-switch-boost inverter (qSBI)Abstract
In this paper, a cascade H-bridge single phase inverter with high voltage gain (CHB-qSBI-HG) is presented. This topology is known by single-stage power converter which operates with two modes: shoot through (ST) and non shoot through (NST). Thus, the state ST, two switches on the leg turn on at the same time, is addressed, so the quality of output voltage and current is improved. Furthermore, a pulse width modulation (PWM) method is modified and combine with CHB-qSBI-HG to achieve superior voltage gain as well as reduce the stress voltage on the power switches. A prototype was built to verify the operating principles through theoretical analysis of CHB-qSBI-HG.
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