METHOD FOR SINGLE-CYCLE CONTROL OF POWER FACTOR CORRECTION

摘要

FIELD: electrical engineering.;SUBSTANCE: method for single-cycle control of power factor correction. The method is applied for an up-converter and implemented by way of the system main control microcircuit. In the method, the discrete value of bus voltage U₀ and the discrete value of inductive current i_g are determined during launch of an analogue-digital converter discretisation. Voltages u₁(t) and u₂(t) are calculated in accordance with the formulae provided. PWM signal duty factor is calculated in accordance with computed voltages. One derives PWM signal and calculates the next time of the analogue-digital converter discretisation launch in accordance with the duty factor (I), R_s standing for a current-sensing resistor resistance, u_m - for voltage achieved by way of control of the difference between voltage U₀ and the reference value U_ref via a proportional integral regulator, T standing for switching period.;EFFECT: simplification of the algorithm of single-cycle control of power factor correction.;4 cl, 6 dwg