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Author: search.filters.author.Piyarat, W.Subject: search.filters.subject.Induction motors

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    Multilevel regular-based binary multiplier for SPIM speed control
    (2003-01-01)
    Tipsuwamporn, V.
    ;
    Sompracha, C.
    ;
    Piyarat, W.
    ;
    Charean, A.
    ;
    Sawaengsinkasikit, W.
    This paper presents multilevel regular-based binary multiplier switching method and parallel-full bridge inverter circuit for controlling speed of single-phase induction motor (SPIM). By constructing various types of 8 bit regular-based binary multiplier signal (RBM) modulated by single-phase multilevel signal, and then generating inverter output signal. This technique can improve the inverter output signal's performance, which demonstrates in term of reduction of total harmonic distortion (THD) and lower-order harmonic when applying to control the motor, resulting to improve the motor efficiency and performance.
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    Adjustable energy control with ICBRM technique
    (2002-01-01)
    Tipsuwanporn, V.
    ;
    Suesut, T.
    ;
    Thepsatorn, P.
    ;
    Piyarat, W.
    ;
    Sawaengsinkasikit, W.
    This paper presents a control method for single-phase and three-phase AC voltage supply by mean of ICBRM variable energy control technique which provides suitable power supply feeding to load requirements, and also, improve the feeding efficiency resulting in increased energy saving. The Integral Cycle Binary Rate Modulation (ICBRM) signals are integral cycle compositions of 8-bit binary rate multiplier (BRM) and 50 Hz, three-phase AC voltage signals which are divided into 8 parts per cycle, so that 2040 patterns are provided for the single-phase and three-phase feeding applications. Experimental results shows that such methods can be properly implemented for lighting bulbs and three-phase induction motor with low energy loss. This mean that the technique provides high efficiency performance and conducts energy saving.