Numsomran, Arjin

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Numsomran, Arjin
Alternative Name
Numsomran, A.
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arjin.nu@kmitl.ac.th

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    Asymmetrical two-phase induction motor speed controlled by multilevel inverter employing cascaded transformers
    (2017-08-03)
    Tipsuwanpom, V.
    ;
    Kaenthong, K.
    ;
    Numsomran, A.
    ;
    Charean, A.
    ;
    Sawaengsinkasikit, W.
    This research presented multilevel inverter using cascade transformers to supply the output voltage levels which are used to control speed of asymmetrical two-phase induction motor. Two sets of full bridge inverters and transformer with difference of number of turn ratio are combined to generate the voltage levels to supply each winding of asymmetrical two-phase induction motor. Triangular multicarrier sine pulse width modulation signal was generated by Arduino Due AT91SAM3X8E microcontroller and IC number IR2130 was used for power circuit. Multilevel inverter was presented to use a low level of input voltage as multilevel of output voltage is high that voltage stress on switches are reduced. The experiment shows the result of speed controlled by volt per hertz constant so as to be sure steady torque and PI method technique was used to closed-loop control.
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    Asymmetrical two-phase induction motor speed controlled with 4-leg voltage source inverter
    (2015-09-28)
    Kaenthong, K.
    ;
    Tipsuwanporn, V.
    ;
    Numsomran, A.
    ;
    Sawaengsinkasikit, W.
    This research is design and construct of Sine Pulse Width Modulation (SPWM) 4-leg voltage source inverter for controlling speed of asymmetrical two-phase induction motor. The Sine PWM switching signal is generated by ARM7 (Adu7024) microcontroller which is programmable and cheap, while having high frequency to generating switching signal. Two ICs No. IR2130 are used for motor driving part. The characteristics of output current signal are nearly closed to sinusoidal pattern resulting to high efficiency for motor control. In order to control the speed of induction motor, ratios of voltage to frequency (V/f) are controlled and constant torques are obtained by implementing technique of PI close-loop control.
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    9-Level inverter for induction motor control
    (2010-12-01)
    Tipsuwanporn, V.
    ;
    Sawaengsinkasikit, W.
    ;
    Numsomran, A.
    ;
    Somsamai, K.
    This article presents speed controlling for single phase induction motor. Principally, 9-level, diode-clamp inverter used to control voltages per frequency is widely used because of its high efficiency to control the motor. In this article, ARM7 model ADU7024 is used as microcontroller to generate eight pulse signals and send to the output voltage amplifier by co-connecting to the modulation module using IC 7408. The obtained output signals are combined to IOR 2130 to generate 15-volt output for driving each gate. The 9-level, diode-clamp is employed to control single-phase induction motor. Such method when was tested to 220-V, 1/3 Hp, 50 Hz motor shown that it could control the voltage per frequency properly. When using the 9-level, diode-clamp inverter controlled by modulation, the results shown that the output waveform were very similar to the sinusoidal wave comparing to the typical waveform, resulting to drive the load efficiently. ©ICROS.