Stabilization of alternative current voltage

Abstract

Two ways to construct a pulse ac voltage stabilizer (PACVS) are discussed in the present paper. In the first one, the acting, average, and amplitude voltages are controlled. An observation interval equal to or a multiple of half of the period of measured voltage is required for it. In the second variant, the instant values of the ac voltages are controlled, which allows one to correct the voltage from and compensate for the short voltage jumps and drops. It is shown that PACVS construction using a booster circuit decreases the demands made on the voltage of transistors and filter capacitor, in addition to impairing the quality of the stabilization and correction of the voltage form. Since it uses the feedback principle of the output voltage form, it is appropriate to construct the PACVS by means of the control principle over disturbance. This enables one to increase the stabilizer speed, since it responds directly to the source of the change in the output voltage rather than the consequence. It is shown that the smoothing action depends on the capacitor capacity and throttle inductance product, while the output resistance and the filter oscillation decrease with increasing capacity and decreasing inductance. An example of a PACVS controlling the instant values of the output voltage and the results of its investigation in MATLAB and Simulink are given.