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# Aubai

### Wobben Research and Development GmbH

41 total contributions since 2013

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Question

Solving n x m non-linear equation systems where n > m
Hi all, I am trying to solve m-nonlinear equations with n-unknowns. keeping in mind that n > m. What is the best way to do that...

3 months ago | 1 answer | 0

### 1

decreasing point on curve
Hi, I think the best way to do so has already been described here and here: basically there are two ways described there: 1- ...

1 year ago | 1

| accepted

Question

Why am I not getting the correct Phase angle when doing FFT
Dear All, I would like to generate a Sine Signal that have the same Phase angle as a given measured Sine signal. in order to ...

2 years ago | 1 answer | 0

### 1

Question

Rate Limiter mfile without a for loop
Dear All, i have some data with a slow rate of change (small slopes) yet at some points my rate of change is very high i woul...

3 years ago | 0 answers | 0

### 0

Wrong data-size being returned by 'FETCH' (64-bit, DatabaseToolBx)
Did Anyone get answer for this question?? I am having the same Problem here

3 years ago | 0

Sum every nth row or array
you can try the Stat_n function under: http://de.mathworks.com/matlabcentral/fileexchange/61218-element-wise-statistics-movin...

4 years ago | 0

How do I take the average of every n values in a vector?
Or you can try the Stat_n function under: http://de.mathworks.com/matlabcentral/fileexchange/61218-element-wise-statistics-mo...

4 years ago | 0

Question

Why am i getting worng answer from the Fourier Block in Simulink when generating interharmonics in my input sine signal
Hi All, I am trying to understant why am i not getting the correct Mag and Phase Output of the Fourier Block. for testing ...

4 years ago | 1 answer | 0

### 1

Question

why is the result of my fetch not complete in database?
I am trying to load some data from a database using matlab. for that i have written my SQL-query and connected to my database ...

4 years ago | 0 answers | 0

### 0

Question

how to generate a Sine wave with changable frequency in mfile?
Dear all, I would like to generate something similler to a PLL sine signal locked on a measured sine signal. for that i have ...

6 years ago | 1 answer | 0

### 1

Submitted

transformation_al_be_to_d_q_inverse.m
transfer from d-q to Alpha,Beta

Submitted

transformation_al_be_to_d_q.m
Alpha, Beta to d,q transformation

Submitted

Park_transformation_inverse.m
Park_transformation_inverse

Submitted

Park_transformation.m
Park_transformation

Submitted

Clarke_transformation_inverse.m
Clarke_transformation_inverse

Submitted

Clarke_transformation.m
Clarke_transformation

Submitted

PID_fun.m
An PID controller

Submitted

Instantaneous_power_mfile.m
Three-phase instantaneous power calculater

Question

Wind speed prediction using ARIMA model
Dear All, I am trying to predicte the next 2 hours wind speed of 10-min wind speed reading (12-point ahead forecasting). for ...

6 years ago | 5 answers | 0

### 5

Question

how can i test an time series NAR NN forecasting tool?
Dear all, i would like to predicte the wind speed of a spesific location for the next 2 hours (12 points of 10min data) for ...

6 years ago | 1 answer | 0

### 1

Submitted

Zero crossing finder
This function is used to recognize the zero corssing of an input signal

Submitted

PLL_mfile_cal
Phase-locked loop.m this is an mfile to calculate the same outputs of the PLL simulink block.

Numerical Integration cumtrapz in matlab mfiles compaired to Simulink Integrator block?
0 Answers i though this is an basic question!! I had to answer myself: cumtrapz accumulate the results till the studied point. y...

7 years ago | 0

| accepted

Question

Numerical Integration cumtrapz in matlab mfiles compaired to Simulink Integrator block?
Hallo all, I am not sure why this code is not working: if true %% PID Test file % Start the script clear clc kp...

7 years ago | 1 answer | 0

### 1

Submitted

Moving RMS Calculation
mean-RMS mfile just like the Simulink block

How to convert sine wave signal to sawtooth wave in Simulink?
did you try the PLL block in Simulink? wt output isur sawtooth wave if i understand your question correctly :)

7 years ago | 0

Submitted

IEC-RMS-Calculater
Use this module to calculate the RMS value of an input signals according to the IEC norm

Submitted

Use this file to read csv files with semicolon ';'

Submitted

Electrical angle calculater
Use this module to get the electrical angle between two "sin" signals