Vibration Monitoring of a Magnetic Element in an Electrical Machine

An electrical machine, comprising:

• a first moving element forming a stator of the electrical machine;
• a second moving element forming a rotor of the electrical machine and movable with respect to the first moving element;
• a magnetic element attached to the first moving element, the magnetic element interacting with the magnetic flux in the electrical machine;
• a sensor for measuring a vibrational quantity of the electrical machine;
• and
• a control unit for detecting a displacement of the magnetic element on the basis of the measured vibrational quantity.

A method for operating a control unit of an electrical machine, the method comprising:

• receiving an input signal indicative of a vibrational quantity of the electrical machine;
• detecting a displacement of a magnetic element of the electrical machine in response to the receiving the input signal;
• and
• providing an output signal in response to a detected displacement of the magnetic element.