FIELD: electric machine engineering.
SUBSTANCE: invention relates to electrical engineering. Proposed method comprises detecting decaying stator voltage induced by damped field of rotor at failure of idle state of cold and hot machine. Method includes determining time constants To cold and To hot when voltage of stator is damped to 0.368 of initial voltage Uo before disconnection and then average temperature of short-circuited winding for copper by formula: 
, where tcold is rotor temperature at first measurement in cold state, tcool is coolant temperature when measuring in hot state.
EFFECT: technical result consists in measurement of average temperature of short-circuited winding of induction motor rotor on change in resistance at direct current.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF DETERMINING ASYNCHRONOUS MOTOR PARAMETRES AND OPERATIONAL CHARACTERISTICS WITHOUT INTERFACING WITH LOADING DEVICE | 2008 |
|
RU2391680C1 |
| METHOD OF INDIRECT CHECKING OF ASYNCHRONOUS MOTOR AIR GAP NON-UNIFORMITY | 0 |
|
SU900226A1 |
| METHOD OF DETERMINING INDUCTION MOTOR STATOR WINDING PHASE DISSIPATION AND DEVICE TO THIS END | 2009 |
|
RU2422839C1 |
| METHOD OF PARAMETRIC CONTROL OF SQUIRREL CAGE INCLUDING MOTOR WITH FAN LOAD AND DEVICE TO PROVIDE CONTROL | 0 |
|
SU1697250A1 |
| METHOD FOR MEASUREMENT OF BODY MOMENT OF INERTIA | 2000 |
|
RU2172936C1 |
| METHOD OF DETERMINATION OF ELECTROMAGNETIC PARAMETERS OF ASYNCHRONOUS ELECTRIC MOTORS | 2016 |
|
RU2623834C1 |
| METHOD FOR DETECTION OF BROKEN RODS IN SHORT-CIRCUITED ROTOR WINDING OF ASYNCHRONOUS ELECTRIC MOTOR | 2022 |
|
RU2786379C1 |
| METHOD OF DETERMINING RESISTANCE AND INDUCTIVE IMPEDANCE OF SCATTERING OF INDUCTION MOTOR ROTOR WINDING | 0 |
|
SU1372259A1 |
| METHOD FOR MANUFACTURING OF INDUCTION ELECTRIC MOTOR AND INDUCTION ELECTRIC MOTOR WITH SQUIRREL-CAGE ROTOR | 1998 |
|
RU2127016C1 |
| SQUIRREL-CAGE INDUCTION MOTOR AND ITS MANUFACTURING PROCESS | 1998 |
|
RU2130681C1 |
