Trachu, Koson

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Trachu, Koson
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Email
koson.tr@kmitl.ac.th

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    Item type:Publication,
    A Bidirectional LCC-S Compensator on Wireless Power Transfer with Constant Voltage
    (2025-01-01)
    Songcharoentrap, Saranyoo
    ;
    Trachu, Koson
    ;
    Pairindra, Worapong
    ;
    Khomfoi, Surin
    This paper studies a bidirectional wireless power transfer (BD-WPT) system designed for electric vehicles (EVs) operating at 400V input, 350V output, 11kW, and 85kHz. The bidirectional power electronic devices that function as inverters or rectifiers with relays are employed to alter the direction of power flow between the source and the vehicle in the bidirectional DC-DC converter, which utilizes the LCC-S resonant circuit that is designed separately for the source and vehicle. MATLAB/Simulink is used to conduct the validation. The output voltage on both the source and the vehicle sides can be regulated to a specific level.
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    Single VDCC Based Voltage-mode First-order Allpass Filter with Electronic Controllability
    (2018-12-24)
    Cheta, Warintorn
    ;
    Siripruchyanun, Montree
    ;
    Trachu, Koson
    ;
    Suwanjan, Peerawut
    ;
    Sotner, Roman
    The implementation of analog circuit called the first order allpass filter (APF) utilizing a versatile active element namely voltage differencing current conveyor (VDCC) is presented. The proposed APF circuit has input and output as voltage signal. The presented allpass filter employs a VDCC, one grounded capacitor and two resistors. The phase angle of output signal is electronically adjusted that is attractive for microcontroller controllability. During controlling the phase response of the output signal, the matching condition of two or three parameters is not required. The VDCC used in this design is implemented from commercially available IC. The oscillator which contains the voltage quadrature sinusoidal signal constructed from the proposed allpass filter and integrator is designed as application. The proposed APF and the sinusoidal oscillator circuit are verified via Pspice simulation and experiment.
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