Field winding interlayer short-circuit detection apparatus and field winding interlayer short-circuit detection method

• Main Authors: TANIYAMA, Yoshihiro, ANDO, Koji, HIRANO, Toshio, FUJITA, Masafumi, TORII, Yoshinori
• Format: Patent
• Language: English
• Published: 18.02.2021
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

According to the embodiment, a field winding interlayer short-circuit detection apparatus comprises: a field winding resistance calculator to calculate, for a field winding of a rotating electrical machine, a field winding resistance calculated value from a detected value of a field winding current and a detected value of a field winding voltage; a determiner to determine presence or absence of an interlayer short-circuit in the field winding by using a comparison result between the field winding resistance calculated value and the reference resistance value. 13204898_1 (GHMatters) P113958.AU Field winding interlayer short-circuit detection apparatus 201 /, 202 Field winding Field winding current detector voltage detector Field winding interlayer V 100 short-circuitdeterminationunit 110 Input part 130 FielId winding resistance 111 calculator Storage -120 112 - -- Field winding old current value derivation part Field winding current detection value 121 113 Field winding current storage variation calculator Fieldwindig oldresisanceField winding resistance 12 114 Field windingoldresistance calculation value 122 (101)value derivation part storage 115 Field winding resistance variation calculator 116- Determination value Controller 150 calculator 117 4Determiner Output part 140