Method for monitoring the temperature of a generator of a wind turbine
AssigneeWobben Properties GmbH
InventorsHussam Daboul, Rolf Ewen, Michael Müller
Life of this patent
Estimating the term…
Abstract
A method is provided for monitoring the temperature of an electric generator of a wind turbine, wherein the generator has a stator, a rotor and a temperature monitoring unit. The temperature monitoring unit has a passive control element on the rotor and a receiving unit on the stator. A change in temperature on the rotor leads to a mechanical or optical change in the passive control element. The mechanical or optical change in the passive control element is acquired by the receiving unit on the stator.
Claims13
A method for monitoring a temperature of an electric generator of a wind turbine, wherein the generator has a stator, a rotor and a temperature monitoring unit, wherein the temperature monitoring unit has a passive control element on the rotor and a receiving unit on the stator, the method comprising:
- detecting, by the receiving unit, a mechanical or optical change in the passive control element, wherein the mechanical or optical change is triggered based on a change in a temperature of the rotor;
- determining that the mechanical or optical change in the passive control element exceeds a threshold;
- and
- generating a warning sign indicative of the mechanical or optical change in the passive control element, wherein
- the passive control element has a movable pin, the movable ping having an associated length that changes as a function of the temperature of the rotor, and
- the movable pin comes into contact with a contact surface of the receiving unit when the temperature of the rotor exceeds the threshold.
An electric generator for a wind turbine, comprising:
- a rotor;
- a stator;
- a generator gap between the rotor and the stator;
- and
- a temperature monitoring unit having a passive control element on the rotor and a receiving unit on the stator, wherein the temperature monitoring unit is configured to:
- detect a mechanical or optical change in the passive control element, wherein the mechanical or optical change is triggered based on a change in a temperature of the rotor;
- determine that the mechanical or optical change in the passive control element exceeds a threshold;
- and
- generate a warning sign indicative of the mechanical or optical change in the passive control element, wherein
- the passive control element has a movable pin that is configured to change in length as a function of the temperature of the rotor, and
- the receiving unit has a mechanical contact detector.
Dependencies are inferred from the claim text.