Pairindra, Worapong

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Pairindra, Worapong
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worapong.pa@kmitl.ac.th

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    Item type:Publication,
    The implementation of SHE control technique for the SST with CHB seven-level waveform on the solar farm applications
    (2019-03-01)
    Khemmook, Panya
    ;
    Khomfoi, Surin
    ;
    Phophongviwat, Teeraphon
    ;
    Pairindra, Worapong
    This proposed paper presents the use of selective harmonic elimination (SHE) technology to control the cascaded H-Bridge Multi-level Inverter (CHBMI) for power transferring over the high frequency transformer (HFT), which is a part of the SST for applying to a solar farm. Apparently, the converter is using the seven-level CHBMI and the SHE technique to get rid of the 5<sup>th</sup> harmonic and 7<sup>th</sup> harmonic to find a set of angles θ<inf>1</inf>, θ<inf>2</inf> and 63 with the lowest 3<sup>rd</sup> harmonic. The calculated angles are used in each modules. Obviously, the simulation has shown that, at m<inf>a</inf>=2.43, θ<inf>1</inf>=11.6782°, θ<inf>2</inf>=26.8870° and θ<inf>3</inf>=56.0271°. The total harmonic distortion (% THDv) will be lowest at 9.35%. According to the experimentation, the SHE technique with low % THDv can reduce the power loss at HFT compared to the square wave transmission technique which the % THDv is high.