abc to dq transformation

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Ahmad Badran
Ahmad Badran 2020-5-11
评论： Zakaria Bouzid 2022-6-13
Hi
Iam working on dynamic model for induction generator I stuck on the trasformation part from abc to dq referance frame.
in matlab block there is wt input signal. but i relay i do not jknow what this value should be or how we can optin it.
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Zakaria Bouzid
Zakaria Bouzid 2022-6-13
connect to the second input a vectorized signal containing the [sin(ωt) cos(ωt)] values, where ω is the rotation speed of the reference frame.
@abdelaziz

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回答（1 个）

Walter Roberson
Walter Roberson 2020-5-11
wt: The angular position of the dq rotating frame, in radians.
https://www.mathworks.com/help/physmod/sps/powersys/ref/abctodq0dq0toabc.html
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Ahmad Badran
Ahmad Badran 2020-5-11
编辑：Ahmad Badran 2020-5-11
How this can be decided, in my case the induction generator is conected to the strong grid with fixed frequency and voltage
Walter Roberson
Walter Roberson 2020-5-12
Are you modeling constant-rate rotation or variable-rate rotation? If you are modeling variable-rate rotation, then is the rotation angle to be the current value of some signal, or is it to be the accumulated value of some signal? For example, is the rotation angle to be proportional to the total current that has flowed over some particular signal?
If the rotation rate is not constant, then are you modeling a system with friction? Is the friction non-linear?

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