PID controller

The PID (  PID - Proportional-integral-derivative) controller enables you to run with a constant rotational speed (constant RPM). Based on the difference bewteen the actual RPM and the targeted RPM, the PID controller will compute a torque, that will be applied by the generator to try to reach the targeted RPM.

The PID controller generator has the following parameters:

Tuning

Setpoint (generator rpm)

The generator rpm setpoint that the PID wants to maintain. Note: If the wind turbine has a gear box the corresponding setpoint for the rotor is different by a factor of the gearbox ratio. If your startoint is a rotor rpm then you find the setpoint for the generator by multiplying with the gearbox ratio.


  • Default value: 970
  • Unit: $\text{rpm}$
  • Range: -100000 — 100000

Proportional gain

The proportional gain factor used by the PID controller to compute the torque.


  • Default value: 150
  • Unit: ${\text{N}\cdot\text{m}} \over {\text{rpm}}$
  • Range: 0 — 1e+08

Integral gain

The integral gain factor used by the PID controller to compute the torque.


  • Default value: 50
  • Unit: ${\text{N}\cdot\text{m}} \over {\text{rpm}\cdot\text{s}}$
  • Range: 0 — 1e+08

Derivative gain

The derivative gain factor used by the PID controller to compute the torque.


  • Default value: 0
  • Unit: ${\text{N}\cdot\text{m}\cdot\text{s}} \over {\text{rpm}}$
  • Range: 0 — 1e+08

Efficiency

Efficiency factor

The efficiency of the generator is the ratio of output electrical power to input mechanical shaft power. The efficiency factor is assumed constant: the electrical power reported by Ashes is the mechanical shaft power multiplied by this factor. If no reduction is desired, set the factor to 1 (the default).


  • Default value: 1
  • Unit: $-$
  • Range: 0.01 — 1