Reduce noise of Te signal in a Induction machine

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João Oliveira
João Oliveira 2014-7-11
回答： Mohsen Aleenejad 2023-10-13
Hi,
I've two circuits whith an asynchronous machine. One of them is very simple, I conected the stator to a 3 phase voltage source and the rotor it's in squirrel cage mode. For this circuit I get good results for the electromagnetic torque. You can see in the first two images bellow.
Now on the second circuit I've a DFIG system where the rotor is wound, conected to a AC/DC/AC converter like the image bellow. The Te for this circuit is not so good, it gives me a very noisy electromagnetic torque (last two pictures). Can someone tell me how can I decrease or smoot this noise to get a Te more like the first one?

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回答（1 个）

Mohsen Aleenejad
Mohsen Aleenejad 2023-10-13
This issue seems more of a control issue rather than noise, I think these torque ripples might be comming from some modeling inaccuracy. Have you seen this example?
https://www.mathworks.com/help/releases/R2023b/sps/ug/three-phase-asynchronous-drive-with-sensorless-control.html?s_tid=doc_srchtitle

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