Performance Analysis of T-type Inverter Based on Improved Hysteresis Current Controller

Year 2019, Volume: 7 Issue: 2, 149 - 155, 30.04.2019

Mustafa İnci

https://doi.org/10.17694/bajece.510412

Cited By: 11

Abstract

This paper presents
an improved hysteresis current control method for five level T-type inverter.
The proposed method is based on four hysteresis levels and performed to
generate switching signals of fundamental transistors in T-type inverter. By
using generated signals through hysteresis controller, bidirectional switch in
T-type inverter is triggered through the logical way. The system is detailed in
analytical expression and exhibited to generate five voltage levels at the output
of inverter. The improved technique is based on an error signal between the
output current and the reference value. Therefore, the proposed modulation
technique achieves the following output current at the desired value and
ensures high-efficiency conversion ratio at the output. In order to show the
validity of the proposed method, the controller is compared with conventional
sinusoidal pulse width modulated T-type inverter. In performance results, it is
obvious that the proposed method provides a lower total harmonic distortion in
comparison with conventional method.

Keywords

Hysteresis current controller, T-type inverter, Comparison, Total harmonic distortion

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