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Speed Loop And Current Loop In Vfd


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Hello ShyGuy


I assume that you are referring to the internal workings of a vector drive, rather than the external connections to a standard drive.

If this is the case, then the vector control model needs to know what the motor speed is and what the motor current is. These values are used within the control algorithm as a current loop (a control system controlling the current) and a speed loop ( contol system controlling the exact motor speed or slip))



Best regards,

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