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ujas patel
ujas patel
Última actividad el 3 de Abr. de 2023

Data store memory error in matlab simulation

I am facing an issue in data store memory block using store memory Read and write Block in matlab simulink. I have attached the screen short in which the posed error has been depicted.
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I am trying to simulate a single phase H-bridge inverter connected to a load in Simulink using Simscape Electrical (blue wire). The simulation does not work. I tested the same circuit (with black wire). And everything works fine. I looked hard, I can't see any reason. Does anyone know why or have any examples?
You can find the simulation files in the attachment.
My goal with this is to start with a basic inverter scheme before testing multilevel converters. I had started with that but I had problems from the beginning...
Thanks in advance
Joe Whitley
Joe Whitley
Última actividad el 5 de Feb. de 2021

MMC rectifier for offshore wind HVDC link

Hi everyone,

I am a third year BEng Energy Engineering student. I am looking at the design, modelling and peformance of an HVDC power converter for use in offshore wind for my final year dissertation. Power electronics is a new area for me and I am also new to simulink/ simscape elctrical.

Could anyone provide some useful examples of MMC (in particular rectifiers), or some advice for designing in simscape electrical. I am struggling with the design of PWM control especially. I aim to make a scaled down version of the MMC in Simulink but so far have had no luck. If anyone can help I would be really appreciative.

Thanks in advance.

Joe

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Hi everyone, I'm trying to estimate the Frequency Response of a buck converter. I've found this article: https://it.mathworks.com/company/newsletters/articles/estimating-the-frequency-response-of-a-power-electronics-model.html I've adapted the procedure to a buck converter and followed the instructions but something went wrong. In the last step I've performed a time-domain verification in a Simulink® simulation with the switch-mode buck converter and a Transfer Function block implementing the parametric estimation and compare the response of both systems to the same small perturbation signal but the estimated model response doesn't match the switching model response. I don't know why I've got a diverging systems. I've tried to reduce the load and modify the duty cycle but nothing changed. How can I fix it?

An
An
Última actividad el 9 de Nov. de 2020

Mistake with PWM generation using Simulink

Dear power electronics control community,

Since I have not solved the problem and have not found an answer to why I receive such an output, I would be happy when you could help me out. The actual project is much more extensive but easy schematic of what I want to do is here:

For that, I am using 2-level PWM generator: https://se.mathworks.com/help/physmod/sps/powersys/ref/pwmgenerator2level.html In the DC-link (DC voltage after the converter) the DC voltage output should be more-less constant (with a little noise) but right now it very far away from the desired output:

Does anyone have a idea what might cause this problem?

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Sabin
Sabin
Última actividad el 17 de Sept. de 2019

Simscape Electrical R2019b

As usual, we start the autumn with a new release. R2019b is live! Check out what's new in Simscape™ Electrical™ . Load Flow Analysis, delta-wound PMSM and BLDC models, power dissipation for all machines, Japanese language localization support and many more new features. Please share your experience with the latest version of Simscape Electrical.

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