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praveen kumar
praveen kumar
最後のアクティビティ: 2020 年 3 月 26 日

Hello friends i have strugled to develope codes in matlab and spent ample time in converting the available codes to my area . If any of the researcher are interested to share their codes with me are welcomed and collabarations are welcomed ...currenty i need a basic code in unit commitment using real coded and binary coded for Security contrained and integrating Reneweable energy .. I too will share my codes because world is going to vanish soon so my knowledge should spread across the globe

with rds s.praveen kumar email:praveenaups777@gmail.com

David
David
最後のアクティビティ: 2020 年 3 月 25 日

Check out this pick of the week from Emma Gau. Emma's submission is featured on the Live Script gallery. Check out the blog post to see why Owen picked it.

Tony Lennon
Tony Lennon
最後のアクティビティ: 2020 年 3 月 25 日

Check out this short video on the new features in Simulink R2020a . What's your favorite new feature?

Arkadiy Turevskiy
Arkadiy Turevskiy
最後のアクティビティ: 2020 年 3 月 20 日

Just wanted to post a link to this video we recently published on YouTube:

PID Controller tuning for a buck converter

Let me know what you think. Arkadiy

In problem 16 I used the following solution:
function b = nearZero(a)
b = max(a(imdilate(a == 0, [1 1 1])));
end
It is working pretty well on mathlab but when I submit my answer to cody, the following error is generated:
Undefined function 'imdilate' for input arguments of type 'double'.
Error in nearZero (line 2)
b = max(a(imdilate(a == 0, [1 1 1])));
Error in Test1 (line 3)
assert(isequal(nearZero(a),b))
Nabil Miri
Nabil Miri
最後のアクティビティ: 2020 年 3 月 14 日

In number 5, its written that the correct answer is c = 1 but the secomnd person has more change than the first person, therefor the correct answer should be 2.Likewise in number 6.

Hi everyone,

I am trying to control an actuator with brushless DC Motor in Simulink. At one point, I am in need of the motor rotation and the only parameter available to me is the duty cycle and the direction of rotor. I knew that it is not possible to calculate rotation from duty cycle. In case if some one have idea about this or some suggestions, could you please share with me

Thanks in advance

SAURABH KUMAR
SAURABH KUMAR
最後のアクティビティ: 2020 年 11 月 15 日

Hello,

I am trying to simulate a PMSM, which has a Quasi sinusoidal back-emf waveform. Is there any way I can define the back emf to be anything other than Sinusoidal/Trapezoidal?

Thanks in advance. Saurabh Kumar

David
David
最後のアクティビティ: 2020 年 3 月 25 日

Check out this pick of the week from Will. Steve's progressbar submission has been around since 2005 and still runs perfectly. Check out the blog post to see why Will picked it.

big Min
big Min
最後のアクティビティ: 2020 年 3 月 27 日

Recently, I have been learning the mathematical modeling of switching converters. Looking for a lot of data, I know that the current loop control mainly includes peak current, valley current and average current control methods. The detailed process of peak current modeling is found in the book "modeling, control and digital realization of switch converter". However, my brother has not found the detailed introduction of average current modeling. I would like to ask you brother and sister have any good information recommendation, the best is books (the most detailed explanation). Thank you very much!

I have issue with the design that i have downloaded from mathwork community. how to solve regarding this matter

Failed to load library 'powerlib_models' referenced by 'mcupqc/Subsystem/Voltage Measurement/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement1/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement2/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement3/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement4/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement5/model' Component:Simulink | Category:Model error Failed to load library 'powerlib_models' referenced by 'mcupqc/Three-Phase V-I Measurement6/model' Component:Simulink | Category:Model error

Chen Lin
Chen Lin
最後のアクティビティ: 2020 年 3 月 9 日

We are excited to announce that Adam Danz has accepted our invitation and now is a member of the Community Advisory Board (CAB)!

Adam has been a rising star in Answers, obtaining 4500+ reputation points in the past year! Furthermore, he has contributed high-quality files to File Exchange, with an average rating of 4.8. Adam also demonstrates good communication skills and the ability to work with others. Those characteristics are what we expect to see from a CAB advisor. You can learn more about him and CAB on the CAB page .

On behalf of all the community team, we would like to extend our warmest welcome to Adam!

David
David
最後のアクティビティ: 2020 年 2 月 21 日

Check out Sean's blog posts ( Intro , Authoring ) on Spider Plots. He's using spider_plot by Moses to create beautiful plots like this.

Skyscrapper
Skyscrapper
最後のアクティビティ: 2020 年 2 月 19 日

Hello everyone, I am trying to implement 3 level space vector modulation for a multilevel inverter. Without mapping vector for region selection of three level space vector, I am getting reference angle started from sector-1 to sector-6 as shown in ''theta_ref'' file. But when I am implementing mapping references for region selection (please see in the attached file ''mapping_reference''), the reference angle is shifting 180 degree that means it is starting from sector-6 to sector-1 as in attached file ''theta_ref_with_region_identification''. Could anyone please let me know why this is happening and how to solve this problem?

Thanks in advance.

N/A
N/A
最後のアクティビティ: 2020 年 2 月 18 日

hi MPPT on the designed bosst circuit does not work correctly. Can i get any help?

Tony Lennon
Tony Lennon
最後のアクティビティ: 2020 年 2 月 17 日

This article describes a six-step workflow for estimating the frequency response of an open-loop boost converter.

Estimating the Frequency Response of a Power Electronics Model

David
David
最後のアクティビティ: 2020 年 2 月 12 日

The following is a list of updates and new features for MATLAB Central, including MATLAB Answers, File Exchange, Blogs, and Cody.

New Features

Community highlights channel released - See this post for more details.

Answers comment UI change - A minor improvement to the user interface when adding comments to questions and answers in MATLAB Answers. This change should make it easier to discern between commenting and adding a new answers to a question.

Answers rich text editor update - The rich text editor has been updated to the 19b version of the MATLAB Live Editor. This update will primarily help with syntax highlighting along with resolving a few other issues.

Answer pages translation option - Answers translations options added. A translation option for questions and answers content has been added for French, German, Italian, Spanish, and Chinese languages.

David
David
最後のアクティビティ: 2024 年 5 月 20 日

Check out barChartRace by Eiji Konaka , this weeks pick by Jiro.
David
David
最後のアクティビティ: 2020 年 2 月 10 日

Hey everyone! I'm spotlighting Nikolaos Nikolaou today because of the sheer quantity of his Cody solutions over such a relatively short time span. Nikolaos has submitted 1,161 Cody solutions over the last 6 months of 2019, averaging 6.4 solutions per day. Achieving a Cody rank of 19 with a score of 18,820 and earning him a plethora of badges (including the Speed Demon badge of course). He's completed 24 problem groups and is well into most of the remaining 35.

Way to go Nikolaos!

Chanaka Prabhath Karunarathna
Chanaka Prabhath Karunarathna
最後のアクティビティ: 2020 年 2 月 10 日

I have 1942x1 cell msgs. Single msg format is 1x1 Float64MultiArray. Inside that there is Data 16x1 double. I need to extract data and store them as vector [1942x16]. I was able to read every data and transpose them into 1x16. Now I need to store that 1x16 by row and build final 1942x16 vector. Does anyone have an idea for that?

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