METHOD DETERMINING PARAMETERS OF T-SHAPED EQUIVALENT CIRCUIT OF DOUBLE-WINDINGS LOW-FREQUENCY TRANSFORMER UNDER NO-LOAD CONDITION

摘要

FIELD: usage of information processing equipment in electromechanics, determination of parameters of longitudinal and lateral links of equivalent circuits of mother articles.;SUBSTANCE: while conducting no-load condition under which secondary winding is open, primary winding of transformer is energized by power supply source. Then arrays of momentary values of input current input voltage output voltage for one and same moments of time are recorded, where is number of divisions in period T; is discreteness of array of momentary values of input voltage output voltage output current with known frequency of power supply source, number of turns of primary and secondary windings of transformer. Thereafter array of momentary values of output voltage reduced to array of momentary values of input voltage is formed. Arrays of momentary values of voltage across first longitudinal resistor arrays of momentary values of active power across first longitudinal resistor and across resistor of lateral link are formed which determine correspondingly active powers and average for given period. Active values of current are determined by momentary values of intut current . Points of joint decision and are formed. Volt-ampere characteristics are constructed and areas and are found and used to find corresponding reactive power across first longitudinal resistor and reactive power across resistor of lateral link. Thereupon parameters of equivalent circuit are established such as first longitudinal active and reactive resistors, active and reactive resistors of lateral link of equivalent circuit of transformer.;EFFECT: simplified approach and increased precision of determination of parameters of equivalent circuit.;3 dwg, 2 tbl