Rotor Vibration Compensation System
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Solution Overview
Problem
Current monitoring and protection systems for electric machines are unable to directly detect rotor torsional vibrations, which can lead to equipment failure if not addressed.
Innovation Solution
A system and method that measure torsional vibrations of a rotor using a measuring device connected to an analyser unit and a computer unit, which calculates and compares data to initiate protective actions, including the use of a compensation means such as a power supply unit or mass damper to counteract vibrations, and a memory unit to estimate the remaining lifetime of the rotor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional vibration sensors are used to monitor rotor vibrations, then radial and axial vibrations can be detected, but torsional vibrations cannot be directly detected
Solution Approach 1:
The patent replaces traditional mechanical vibration sensors with a combined approach using existing mechanical sensors (accelerometers, velocity sensors) coupled with signal processing algorithms. The system processes vibration signals in the frequency domain to extract torsional vibration components that are not directly measurable by conventional mechanical sensors alone.
Solution Approach 2:
The patent introduces signal processing algorithms and frequency domain analysis as intermediaries between the physical vibration phenomenon and the detection system. By analyzing the frequency characteristics of signals from existing sensors, the system indirectly detects torsional vibrations through their characteristic frequency signatures.
2Reliability
If protection systems immediately interrupt operation when vibrations exceed limits, then equipment safety is ensured, but operational continuity is reduced
Solution Approach 1:
The patent implements preliminary monitoring and analysis of vibration trends before critical limits are reached. By detecting early signs of torsional vibrations and analyzing their development, the system can take preventive measures or adjust operational parameters before immediate shutdown is required, thus maintaining continuity while ensuring safety.
Solution Approach 2:
The patent establishes a continuous feedback loop that monitors vibration levels, analyzes frequency content, and provides real-time information about torsional vibration states. This feedback enables operators to make informed decisions about operational adjustments, allowing the system to maintain safe operation longer by responding to gradual changes rather than requiring immediate interruption at fixed thresholds.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively detects and mitigates torsional vibrations, preventing equipment failure by introducing damping and ensuring operational safety through real-time monitoring and compensation, while also estimating the remaining lifetime of the rotor.
Implementation Method 1
a torsional vibration damper generating a compensation torque by means of inertial masses via springs
Implementation Method 2
generating a mechanical counter-vibration
Implementation Method 3
a magnetostrictive actuator device for generating a mechanical counter-vibration
Data Source
AI summary
The present disclosure relates to a system to compensate for mechanical forces on a rotating rotor of an electric machine, to a method for compensating mechanical forces on a rotating rotor of an electric machine, and to a use of a corresponding system. Disclosed is a system for compensating torsions at a rotating rotor. The system includes at least one measuring device for measuring specific properties of the rotor, an analyzer unit for analyzing the measurement data of the measuring device, a compensation means for compensating the torsions at the rotor, the compensation means comprise a power supply unit generating a signal adapted in amplitude and frequency to the measured properties of the rotor, and to apply the generated signal to the rotor, and the power supply unit is a frequency converter.