How implement a load step change in Simulink with parallel resistors for DC-DC converter?

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Myeon
Myeon 2023-5-18
移动：Sabin 2023-10-2
I am currently using a variable resistor to create a load step change in Simulink for my DC-DC converter. I was asked to generate this step change with parallel resistors and a switch. How do I implement this approach? I need the switch to switch at a desired time.

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Joel Van Sickel
Joel Van Sickel 2023-5-22
移动：Sabin 2023-10-2
you need to calculate the 2 loads that yo uwant to have. For the larger resistance load (lower power, lower current) calculate the resistance that you need. Then, calculate the resistance you need for the 2nd load. Now you need to calculate the resistance required, that when in parallel with the 1st resistance, will give you your desired 2nd load resistance. Once you have that, place a resistor in parallel with the 1st resistor. Then place an ideal switch in series with the 2nd resistor. This will allow you to switch it in and out of the network. So you will have 2 equivalent resitsances. The first will be R1, and the second wiill be R1||R2.

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