The following two blocks cannot be connected in series

Question

arian hoseini 2022-6-26

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https://ww2.mathworks.cn/matlabcentral/answers/1748530-the-following-two-blocks-cannot-be-connected-in-series

评论： arian hoseini 2022-11-13

采纳的回答： Joel Van Sickel

i get this error and i tried to Add a high-value resistance in parallel with one of the two block but got another error

The following two blocks cannot be connected in series:

Block 1: 'Unonlinearelement_Variable Resistor/SrcI'

Block 2: 'Series RLC Branch2'

The first block, modeled as a current source, cannot be connected in series with the inductive element of the second block.

Add a high-value resistance in parallel with one of the two block.

You can also specify high-value resistive snubbers if the blocks have a snubber device.You can avoid the use of the snubber by selecting the 'Continuous' simulation type in the Solver tab of the Powergui and deselecting the 'Disable ideal switching' option in the Preferences tab of Powergui block.

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Answer 1

Joel Van Sickel 2022-6-28

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Hello Arian,

this is a limit based on how that block is implemented. You can either put a larger resistor in parallel with that block, or switch the solver to continuous, or you could make the circuit using simscape components instead of specialied technology, and then you won't have this limitation (the blue circuit blocks are simscape, the black ones are specialized power systems)

Regards,

Joel