How to Draw Spiral in HFSS_Help
Plase, I dont kno how to draw the spiral in the attached picture in HFSS, can any one tell m how to draw it step by step.
You need to first draw the line. Then there is spiral icon. click on it & enter the parameters to draw spiral ( clock wise or anti clockwise).
The shape will totally depend on the line you draw with length r1.
when you will draw the first spiral. then copy the same spiral & make mirror image of that spiral.
You will get the drawing you are expecting.
Dear Sir,
In the simulink demo of “Wind Farm (DFIG Phasor Model)”, the wind turbine is modelled using pitch control. As per the wind turbine aerodynamics used, for a wind speed of 14 m/s, the unregulated rotor speed must be 1.4 pu. In that model the DFIG speed is maintained at 1.21 pu by using the pitch control. My observation is that if the pitch control is disabled, the rotor speed is not maintained at 1.4 pu, and it keep on changing as time passes.
I am working with a model in which I need to get the maximum rotor speed corresponding to the wind speed. I tried to maintain the rotor speed steady by changing rotor inertia (H), friction factor (F), stator and rotor resistances, but without any result.
Can anyone help me to stabile the unregulated rotor speed of the DFIG (without pitch control) for each wind speed?
Thanks,
Chetan
chetankv01@gmail.com
Added after 26 seconds:
Dear Sir,
In the simulink demo of “Wind Farm (DFIG Phasor Model)”, the wind turbine is modelled using pitch control. As per the wind turbine aerodynamics used, for a wind speed of 14 m/s, the unregulated rotor speed must be 1.4 pu. In that model the DFIG speed is maintained at 1.21 pu by using the pitch control. My observation is that if the pitch control is disabled, the rotor speed is not maintained at 1.4 pu, and it keep on changing as time passes.
I am working with a model in which I need to get the maximum rotor speed corresponding to the wind speed. I tried to maintain the rotor speed steady by changing rotor inertia (H), friction factor (F), stator and rotor resistances, but without any result.
Can anyone help me to stabile the unregulated rotor speed of the DFIG (without pitch control) for each wind speed?
Thanks,
Chetan
chetankv01@gmail.com
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