How to create small signal stability DFIG modal simulation

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Vijay Kumar 2023-3-22

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https://ww2.mathworks.cn/matlabcentral/answers/1933270-how-to-create-small-signal-stability-dfig-modal-simulation

评论： Vijay Kumar 2023-4-7

i have create matlab simulation small signal stability studies bact to back converter . they have dq_ to _abc fram error plz i need help to solved my simulation.

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Sam Chak 2023-3-22

@Vijay Kumar,

Can you show the equations? Usually, the stability needs to be proven rigorously.

Vijay Kumar 2023-3-22

yes i use create M_ file and parameters also bt some error in simulation first

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Answer 1

Jack 2023-3-22

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Hi,

If you are experiencing errors in your DQ to ABC frame transformation in your back-to-back converter simulation, there are a few things you can check to help solve the issue:

Check your implementation of the DQ to ABC frame transformation equations to ensure they are correct. The transformation equations can be prone to errors if they are not implemented correctly, especially if you are using different conventions or sign conventions than what is standard.
Check the input signals to the DQ to ABC frame transformation. The transformation requires inputs of the DQ frame current or voltage values, as well as the rotor angle. Ensure that these input signals are being properly calculated and passed into the transformation block.
Check the simulation settings and solver options to ensure that they are appropriate for the system being modeled. The simulation settings can have a significant impact on the accuracy of the simulation results. Ensure that the simulation time step is appropriate for the system being modeled, and that the solver options are set correctly.
Check the physical parameters of the back-to-back converter being modeled. Ensure that the physical parameters of the converter, such as the inductance and capacitance values, are accurate and appropriate for the system being modeled.
Finally, consider consulting reference material or seeking guidance from experts in the field to help identify and solve any issues in your simulation. Back-to-back converter simulations can be complex and may require specialized knowledge or expertise to properly model and analyze.

Thanks