Your search returned 74 items.
The external grid is modelled as a voltage source with an internal impedance. The mechanical equations are equivalent as those for the synchronous machine. The Acceleration Time Constant (in s)…
Tags
Attached you find an example with 3 unsymmetrical voltage sources. It is required to use 3 symmetrical voltage sources and to connect them to the load busbar using 3 single-conductor cables (phase A…
Tags
Attached is an example (ExampleTCSC.pfd) of a Thyristor Controlled Series Capacitor (TCSC) including a control for power oscillation damping (POD) to be used with RMS simulations.…
The options available are the following: Voltage Measurement Device and Current Measurement Device (StaVmea and StaImea). These elements implement the measurement of time-dependent data of a…
For load -flow analysis enter the synchronous machine as a voltage source, using the steady-state impedances (Xd) and the magnitude of the no-load voltage. This represents the behaviour of the…
Tags
In the attached example (FixedSpeedWTG.pfd) an induction generator with the necessary dynamic models is shown. The reactive power is balanced using a switched capacitor. The dynamic models are a shaft…
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…
Tags
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…
Tags
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,…
Tags
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.…
Tags