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I work in the wind industry and we are having a problem on one of our turbines as follows:
The turbine has recently had two yaw gear failures which we think is too much of a coincidence.
From what the turbine manufacturer is telling us we can have a situation where when a gear fails, the turbine will come out with some type of a yaw error (I.e. yaw motor 1 fuse trip or yaw error etc.). However, if the motor shaft is not restricted and the motor can turn freely then the turbine sees no fault and will reset.
We did not think that one of these small 4kW motors and gear would be able to yaw the nacelle on its own but the turbine supplier says it is, and has done for a period of weeks in the past. We thought if we had that situation we would have an over current alarm on the one motor as its working twice as hard as usual thus coming out on over load, but seemingly not.
The issues here is we cant be sure when a yaw gear fails unless its a situation where the motor shaft is locked/jammed and will not move, the present set up is there is one Horstmann 11kW soft starter with a ramp up, ramp down and initial torque adjustment settings on it and two over loads on each contactor for each motor.
My question is, is there any component thats not a VSD that we can put in series any where in the circuit that we can set after we test/monitor the base current (I) characteristics of each motor when in operation and then when we have the typical base amps loads from each motor then set it up to monitor an under or over current situation on either motor? We want to be able to link it into turbine supplier SCADA also.
The turbine has recently had two yaw gear failures which we think is too much of a coincidence.
From what the turbine manufacturer is telling us we can have a situation where when a gear fails, the turbine will come out with some type of a yaw error (I.e. yaw motor 1 fuse trip or yaw error etc.). However, if the motor shaft is not restricted and the motor can turn freely then the turbine sees no fault and will reset.
We did not think that one of these small 4kW motors and gear would be able to yaw the nacelle on its own but the turbine supplier says it is, and has done for a period of weeks in the past. We thought if we had that situation we would have an over current alarm on the one motor as its working twice as hard as usual thus coming out on over load, but seemingly not.
The issues here is we cant be sure when a yaw gear fails unless its a situation where the motor shaft is locked/jammed and will not move, the present set up is there is one Horstmann 11kW soft starter with a ramp up, ramp down and initial torque adjustment settings on it and two over loads on each contactor for each motor.
My question is, is there any component thats not a VSD that we can put in series any where in the circuit that we can set after we test/monitor the base current (I) characteristics of each motor when in operation and then when we have the typical base amps loads from each motor then set it up to monitor an under or over current situation on either motor? We want to be able to link it into turbine supplier SCADA also.
