The Scope and Application of Electrical Signature Analysis in Windpower

Electrical Signature Analysis (ESA) was initially developed at Oak Ridge National Labs (ORNL) in the 1980s as a method for evaluating bearings and gears in motor operated valves in the nuclear power industry. In 1992, the technology was licensed into general industry for applications in utilities and commercial applications...

Howard Penrose
MotorDoc LLC

Articles

Condition Monitoring Management & AI

The Disturbing Direction of Condition-Based Monitoring

Terms like predictive maintenance, condition based maintenance, and reliability-centered maintenance, have undergone commercially-driven changes for over 30 years...

Howard Penrose
MotorDoc LLC

Articles

Alignment + Balancing
Ultrasound
Vibration Analysis

Commercial and Industrial Power System Losses and Mitigation through Neutral and Ground

Even in discussions related to power harmonics most engineers, let alone reliability and energy professionals, understand the potential losses through the system. When it comes to harmonic content in neutral and ground in single and three phase systems, and the related losses, there has been limited attention...

Howard Penrose
MotorDoc LLC

Five Minute Facts

Motor Testing

Electric Motor Testing: The Power Factor

Howard Penrose explains the power factor of an electric motor, using an example from a real motor…

Howard Penrose
MotorDoc LLC

Five Minute Facts

Motor Testing

What Can We See with ESA and MCSA?

If I take my data between the controls and the motor, current signature shows downstream toward the load and process, while voltage signature shows upstream toward the generator. And it shows the whole system at once…