Voltage Sag Ride through Improvement of Modern Ac Drives: Review of Methods and a Case Study
نویسندگان
چکیده
ABTRACT Modern solid-state induction motor drives are highly sensitive to voltage sags. Their nuisance tripping can cause long re-start delays and production losses. Although it is the supply utility’s responsibility to maintain a good quality supply system, drives manufacturers also have to take steps to harden the performance so that a drive stays on line as long as possible during a voltage sag provided the resulting performance of the drive can be tolerated. This paper reviews the approaches that can be used to improve the sag behaviour of a drive and presents the results from an experimental study in relation to a modern drive [8].
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