Abstract
The function of alternating current (AC) power control is to control voltage, current, and average power sent from source to the load either in single-phase or in three-phase. One of the power control devices is Silicon Controlled Rectifier (SCR). In this research, the main objective was to simulate a single-phase power control circuit with SCR using SPICE program. The simulation was carried out on SPICE program to determine the parameters of load in the form of current, voltage, power, and total harmonic distortion (THD) with a SCR firing angle of 90°. The simulation was also conducted to adjust the SCR firing angle according to the desired power at resistive (R) load. Then, the simulation result was compared with the theoretical calculation. The comparison showed that the two results from simulation and theoretical calculation were closes to each other. The simulation result also proved that the firing angle is inversely proportional to the load power.
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