Ride through Strategy for a Three-Level Dual Z-Source Inverter Using TRIAC - Circuits and Systems

CS > Vol.7 No.11, September 2016

Ride through Strategy for a Three-Level Dual Z-Source Inverter Using TRIAC ()

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Download as PDF (Size: 2608KB) PP. 3911-3921

DOI: 10.4236/cs.2016.711326 1,625 Downloads 2,937 Views Citations

Author(s)

A. Nazar Ali¹, Dr. R. Jeyabharath²

Affiliation(s)

¹K. Ramakrishnan College of Technology, Trichy, Tamilnadu, India.
²K.S.R Institute for Engineering and Technology, Namakkal, Tamilnadu, India.

ABSTRACT

A new ride through strategy is introduced in a three-level dual Z-source inverter, for isolation under semiconductor switching failure condition. Here the output will have no significant decrease in the amplitude and quality. Instead of diodes, the triacs are added to the inverter source ends, as it can perform a bidirectional power transfer also it can operate well in both low and high voltage operating conditions. The faulted part can be isolated by simply altering the firing pulses for turning on/off the triacs using the carrier based SPWM technique and resulting in a boosting output with zero common mode voltage. Consequently, it forms a common floating point or null point with a zero common mode voltage. It is experimentally verified by using MATLAB, and digital oscilloscope.

KEYWORDS

Common Mode Voltage, Fault Compensation, Three-Level Inverter, Sinusoidal Pulse Width Modulation, Z-Source Inverter

Share and Cite:

Ali, A. and Jeyabharath, D. (2016) Ride through Strategy for a Three-Level Dual Z-Source Inverter Using TRIAC. Circuits and Systems, 7, 3911-3921. doi: 10.4236/cs.2016.711326.

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