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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…
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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All parameters are referred to the stator, also the rotor impedances. In many data sheets, you find R2’ and X2’ being the rotor resistance and reactance in Ohm referred to the stator. In this case,…
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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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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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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…
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.…
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…
With these parameters you can specify a frequency characteristic for r and l” (subtransient inductance) for consideringskin effect and the variation of the internal inductance. Relevant for harmonics…
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…