how to make AC or DC load vary on simulink?

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Muhammad
Muhammad 2025-7-6
回答： Javier Gazzarri 2025-7-8
I am making a HESS (hybrid energy system storage) project based on battery supercapacitors on stand alone PV, but I am confused about how to make the load change when the program is running, I am using version 2018b and 2023b, in version 2018b there is no variable load, but in 2023b there is a ‘dynamic load’ variable load that can be used as an AC or DC load, but I cannot connect the port of the block to my DC bus, is there a solution or suggestion?
  2 个评论
Walter Roberson
Walter Roberson 2025-7-6
I suspect that on one side you have Simscape Electric blocks, and on the other side you have Simscape Electric Specialized Power System blocks. Specialized Power Systems is a seperate Simscape domain from regular Simscape Electric, and the two cannot be connected together without using convertor blocks.
Muhammad
Muhammad 2025-7-6
You are right my friend. is there any solution how to make a variable load that can be connected to the PV system?

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回答（1 个）

Javier Gazzarri
Javier Gazzarri 2025-7-8
Hello Muhammad,
Please let me know if this is an acceptable to you:
1) Connect the load signal to the MULTIPLY port of a Divide block
2) Measure the PV voltage and connect the voltage to the DIVIDE port of the Divide block
3) Connect the output of the divide block to a Controlled Current Source block and connect the latter to the PV
4) Add a 1/z or transfer function to the loop above if it generates an algebraic loop
Hope this helps.
Javier

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