Modified PWM strategy for three level T-type inverter to increase boost factor
Corressponding author's email:
tridd@hcmute.edu.vnDOI:
https://doi.org/10.54644/jte.64.2021.91Keywords:
Multilevel inverter, Z Source, Quasi Switch Boost, T-Type inverter, High boost factorAbstract
In this paper, a modified pulse-width modulation (PWM) strategy for the three-level quasi-switched boost T-type inverter (TL-MqSBT2I) to increase boost factor is presented. The Shoot through (ST) state is inserted into zero vector in order not to affect the output voltage. Modified shoot through pulse control method can increase boost factor up to 66.67% as compared to the traditional control method when the duty cycle D0 is 0.15. By combining the technique of alternating short-through and full short-through between impedance source network and T-Type inverter. The operation principle and overall control strategy for this configuration are also detailed. The simulation is implemented with the help of PSIM software to demonstrate the accuracy of this strategy.
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