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Subject: search.filters.subject.Inverters

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    A simple and low cost of delta modulator for static PWM inverter
    (2004-12-01)
    Choochuan, C.
    ;
    Kinnares, V.
    ;
    Pirajnanchai, V.
    The problem of switching frequency over the fundamental period of the modulation signal in fixed band delta modulation is improved by adding a triangular carrier wave to the sinusoidal reference and forcing the integrator output to follow the sum of these two signals is proposed in this paper. The proposed method is applied to the voltage source inverters for variable-speed three-phase induction motor drives applications(VSD).
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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.