Why the Three-Phase Breaker block in Simscape does not behavior as expected?

11 Ansichten (letzte 30 Tage)
Dear all,
Let me introduce my problem. I am starting a model of a three-phase microgrid, but I am having some problems while usin the Three-Phase Breaker block since it doesn't behavior as expected: When I set the breaker to open state (Initial status - open / No switching any phase), I would expect that the voltage measured in the After Breaker scope were zero, but I am getting 20 kV instead. The same occurs when I set the breaker to close state. I would expect different voltage values depending on the breaker state.
Regarding the snubber parameters, Matlab's help says that Rs and Cs should be set to 0.1 and inf respectively when there is an inductor in series. Matlab also recommends to use the ode23tb solver for a most robust simulation. I am changing the snubber parameters to see if the system behavior changes, but it doesn't.
Did some of you have this problem before? Does someone know what could be the problem?
Thank you in advance for your help!
  1 Kommentar
habip yildirim
habip yildirim am 5 Feb. 2023
I encountered such a problem and solved by switching powergui setting to "continuous" mode. It was "discrete" when I got error.

Melden Sie sich an, um zu kommentieren.

Antworten (2)

Mehran Mustafa
Mehran Mustafa am 24 Okt. 2018
I'm having exactly the same problem. Did you find a solution to this yet?

Arjun Sujeeth
Arjun Sujeeth am 1 Nov. 2021
Hey I would suggest this solution to you: try using 2 MOSFETS opposite to each other like shown in the Figure below. Thi should be a feasible solution

Kategorien

Mehr zu Variable Initialization finden Sie in Help Center und File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by