FIELD: electricity.
SUBSTANCE: method to diagnose the technical condition of power equipment includes recording time dependences of voltage and current consumed by an electric motor, which is made with the help of voltage and current sensors with further passage through a low-pass filter. Instantaneous capacities of each phase are calculated. Further spectral analysis of produced voltage, current and capacity signals is carried out. Then coefficients of asymmetry, harmonics, power losses are calculated. Based on these coefficients and taking into account the output coordinate, the technical condition of the electric drive is identified, and the residual resource is estimated.
EFFECT: higher efficiency of fault detection at early stage of occurrence, which makes it possible to plan rational time of AC electric drive repairs.
1 dwg
Title | Year | Author | Number |
---|---|---|---|
METHOD TO DIAGNOSE AND ASSESS RESIDUAL RESOURCE OF AC ELECTRIC DRIVES | 2013 |
|
RU2532762C1 |
METHOD OF DIAGNOSTICS OF TECHNICAL CONDITION AND ELECTROMECHANICAL DEVICE REMAINING LIFETIME ESTIMATION WITH ASYNCHRONOUS MOTOR | 2016 |
|
RU2626231C1 |
METHOD FOR DETERMINATION OF TECHNICAL CONDITION OF ELECTRIC AND HYDRAULIC DRIVES | 2022 |
|
RU2799489C1 |
DEVICE FOR REGISTRATION, IDENTIFICATION OF OVERLOADS AND ESTIMATION OF RESIDUAL RESOURCE OF INSULATION OF SUBMERSIBLE ELECTRIC MOTORS | 2017 |
|
RU2655948C1 |
MODE OF DIAGNOSTICS OD ELECTRICAL ENGINES OF ALTERNATING CURRENT AND OF MECHANICAL ARRANGEMENTS INVOLVED WITH THEM | 2005 |
|
RU2300116C2 |
DIAGNOSTIC METHOD OF ALTERNATING CURRENT MOTOR AND ASSOCIATED MECHANICAL APPLIANCES | 2007 |
|
RU2339049C1 |
DEVICE FOR DIAGNOSTICS AND EVALUATION OF RESIDUAL LIFE OF ELECTRIC MOTORS | 2019 |
|
RU2727386C1 |
METHOD OF DIAGNOSTICS OF ELECTRICALLY DRIVEN MECHANISMS AND SYSTEMS | 2009 |
|
RU2431152C2 |
METHOD TO DIAGNOSE TECHNICAL CONDITION OF ELECTRIC DRIVE BY EVALUATION OF DYNAMICS OF ITS ELECTRICAL PARAMETERS | 2013 |
|
RU2546993C1 |
METHOD TO DIAGNOSE TECHNICAL CONDITION OF ELECTRIC MOTOR BY ITS ELECTRICAL PARAMETERS | 2009 |
|
RU2425391C1 |
Authors
Dates
2011-07-27—Published
2009-11-16—Filed