The Use of Histograms for Detection of Electrical Insulation Breakdown
Abstract
Seeded fault experiments were performed on a 50 Hp, 3 phase, 1750 RPM induction motor operated with a variable speed (pulse width modulation, or PWM, type) controller. A hole was cut in the stator housing, allowing access with an industrial heat gun. A single coil of one phase, at the point where it enters the stator laminations, was heated to a series of raised local temperatures. Current and voltage data were simultaneously measured on the target phase and recorded at a sample rate of 2.5 MHz each. Various feature extraction methods were applied to the voltage, current and instantaneous power (voltage times current) time series data. Single point statistics (rms, skewness, and kurtosis), histograms, and Fourier spectra are presented here.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 05, 2001
- Accession Number
- ADP013504
Entities
People
- Jun Wang
- Sally Mcinerny
Organizations
- University of Alabama