Equipment Diagnostics: Technical Articles
About These Articles
Articles on ESA, vibration analysis, tribology and the principles and applications of condition monitoring.
Most articles below are in Japanese. Japanese-language articles link directly to their Japanese pages.
Wind Turbine Diagnostics: Understanding the Drivetrain and ESANew!!
How drivetrain knowledge supports wind turbine diagnosis, and how ESA assesses electrical and mechanical conditions from one suitable measurement location.
DFIG Wind Turbines: Failure Modes and Detection Methods (Japanese)
An introduction to the rotor winding neutral-point ring, or wye ring, in doubly fed induction generators.
Why “It Is Fine for Now” Delays Maintenance Decisions (Japanese)
Why apparently normal operation can delay decisions on equipment maintenance.
LTSA Explained: How It Differs from Wind Turbine Condition Monitoring (Japanese)
Why long-term service contracts and scheduled inspections do not replace an understanding of equipment condition.
The Air Gap: Where Electrical and Mechanical Energy Meet (Japanese)
How electromagnetic interaction across the air gap transfers energy between the stator and rotor.
ESA Applications and Field Experience | TRIPOD Corporation
ESA diagnostic experience across industries, equipment types and detected anomalies in Japan.
Condition Diagnostic Technology: Its Development in Kitakyushu and Yawata (Japanese)
A look at the development of condition diagnostic technology in Japan through the work of Toshio Toyota in Kitakyushu and Yawata.
How Variable Loads Fatigue a Wind Turbine Drivetrain (Japanese)
How changes in wind speed and direction affect the loads transmitted through a wind turbine drivetrain.
Electrical Signature Analysis: Origins and Related Techniques
The origins of ESA and its relationship to current, voltage and power quality analysis. Read in English.
Why Vibration Specialists Should Consider ESA (Japanese)
How experience in vibration diagnostics can provide a foundation for understanding and applying ESA.