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How can I visualise the Cp-Lambda-Curve of a wind turbine?

The attached example (WindCpLambda.pfd) visualises the aerodynamic efficiency cp of the wind turbine, which can be found in the DFIG (doubly fed induction generator) template. Here the cp-lambda…

When do I have to activate the option "Consider Current Displacement" for the DFIG?

The consideration of current displacement effects is only important if the complete speed-torque range of an induction machine is of interest, which is usually the case if a motor start-up is…
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Are the rotor parameters referred to the stator or to the rotor of the DFIG?

All parameters are referred to the stator, also the rotor impedances. In many data sheets, you find R2ā€™ and X2ā€™ being the rotor resistance and reactance in Ohm referred to the stator. In this case,…
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For the doubly fed induction machine acting as a generator or motor, is the slip negative or positive?

A doubly-fed induction machine (DFIG) can operate as a generator with positive and negative slip values. A positive slip value corresponds to motor operation of a normal induction machine.…
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Are the settings for P and Q valid for the stator only or for stator plus rotor of the DFIG?

The active and reactive power settings are the combined power of stator and rotor. When setting the machine to Generator on the Basic-Options-page, the machine is in generator-orientation and a…
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Do you have an example for Photovoltaic generators and battery storage systems?

In the attached example (PhotovBattery.pfd ) two explicit modelling approaches are shown. The models we recommend for PowerFactory simulations are very similar to each other. The PV generator consists…

Do you have an explanation of the parameter 'xd''sat' of the synchronous machine?

The unit is machine p.u. (rated power and rated voltage of the corresponding machine). This parameter is only used in IEC short circuit calculations.…

Do you have an explanation of the parameter 'Ik' of the synchronous machine?

This value is an alternative input for the synchronous reactance. It is the permanent short circuit current in case of rated IEC conditions (1.1*Un subtransient voltage) and a direct short circuit at…

Do you have an explanation of the parameters 'rs(f)' and 'I''(f)' of the synchronous machine?

With these parameters you can specify a frequency characteristic for r and lā€ (subtransient inductance) for consideringskin effect and the variation of the internal inductance. Relevant for harmonics…

What does the option 'Consider transient parameters' of the synchronous machine do?

This flag indicates if the machine reactance should be calculated using all transient parameters (xdss, xds, xd, Tdss, Tds), or if just the subtransient reactance should be used for harmonics. There…