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Implementation of a Single Phase Z-Source Buck-Boost Matrix Converter using PWM Technique


Author : Swetha Shekarappa G and Shivangouda B Patil

Pages : 3969-3973
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Abstract

This paper presents a single phase z-source buck-boost matrix converter which can buck and boost the output voltage with step change frequency i.e. both the voltage and the frequency can be steeped up or steeped down. Also, this converter uses a safe-commutation technique to conduct current in a continuous path, resulting in the elimination of voltage spikes on switches without the need for a snubber circuit. It has no energy storage devices, performing the energy conversion by directly connecting input with output phases through bidirectional switches. For this reason, it is known as all-silicon power converters. In the proposed scheme, dsPIC30F2010 controller is used to produce PWM signals. The operating principles, analysis and experimental results of the proposed single phase z-source buck-boost matrix converter are described and the experimental results show that the output voltage can be obtained at three different frequencies—100, 50, and 25 Hz in the buck–boost amplitude mode. Textronics TDS2024B storage oscilloscope is used to store the gate pulses and waveforms.

Keywords: Buck–boost voltage, single-phase matrix converter, Step-up and step-down frequency, Z-source converter

Article published in International Journal of Current Engineering and Technology, Vol.4, No.6 (Dec-2014)

 

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