Indian Journal of Pure and Applied Physics

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Trapezoidal Modulated Direct Matrix Converter: For Higher Frequency AC/AC Conversion


Affiliations
1 Department of Electronics and Communication Engineering, Chandigarh College of Engineering & Technology, Degree Wing, Chandigarh-160 019, India
2 National School on Engineering of Gabès, University of Gabès, 6072, Tunisia
3 Department of Electrical & Electronics Engineering, National Institute of Technology Delhi, India
4 Department of Mechanical Engineering, National Institute of Technology Delhi (N I T D), Delhi-110 040, India

In this paper a digital controller has been developed based on Field Programmable Gate Arrays (FPGA) to improve the quality of output (o/p) waveforms produced from a direct matrix converter (DMC), for o/p frequencies higher than the input frequency. In order to reduce the harmonics (present in the o/p voltage waveforms), the performance of proposed DMC is analysed by applying an advanced modulation technique, “Trapezoidal modulation (TM)”. The observed total harmonic distortion (THD) associated with the o/p voltage waveforms is reduced to a satisfactory level with the application of TM. The developed hardware arrangement is quite compact. Working of the proposed digital controller for the DMC has been successfully verified for a range of the o/p frequency, f0 values extending from 100 Hz to 50 kHz.
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  • Trapezoidal Modulated Direct Matrix Converter: For Higher Frequency AC/AC Conversion

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Authors

Irfan Ahmad Khan
Department of Electronics and Communication Engineering, Chandigarh College of Engineering & Technology, Degree Wing, Chandigarh-160 019, India
Aymen Flah
National School on Engineering of Gabès, University of Gabès, 6072, Tunisia
Anshul Agarwal
Department of Electrical & Electronics Engineering, National Institute of Technology Delhi, India
Harish Kumar
Department of Mechanical Engineering, National Institute of Technology Delhi (N I T D), Delhi-110 040, India

Abstract


In this paper a digital controller has been developed based on Field Programmable Gate Arrays (FPGA) to improve the quality of output (o/p) waveforms produced from a direct matrix converter (DMC), for o/p frequencies higher than the input frequency. In order to reduce the harmonics (present in the o/p voltage waveforms), the performance of proposed DMC is analysed by applying an advanced modulation technique, “Trapezoidal modulation (TM)”. The observed total harmonic distortion (THD) associated with the o/p voltage waveforms is reduced to a satisfactory level with the application of TM. The developed hardware arrangement is quite compact. Working of the proposed digital controller for the DMC has been successfully verified for a range of the o/p frequency, f0 values extending from 100 Hz to 50 kHz.