A4 Conference proceedings

Active du/dt filter dimensioning in variable speed AC drives

Publication Details
Authors: Ström Juha-Pekka, Tyster Juho, Korhonen Juhamatti, Purhonen Mikko, Silventoinen Pertti
Editors of book: EPE Association
Publication year: 2011
Language: English
Related Journal or Series Information: European Conference On Power Electronics And Applications
Title of parent publication: Proceedings of the 2011-14th European Conference on Power Electronics and Applications (EPE 2011)
Journal acronym: EPE-ECCE Europe
ISBN: 978-1-61284-167-0
eISBN: 978-90-75815-15-3
ISSN: 2325-0313
JUFO-Level of this publication: 0
Open Access: Not an Open Access publication

Active du/dt is a new output filtering method to mitigate cable reflection based motor overvoltages. The target in active du/dt is to minimize the passive filter in terms of size and weight, and to provide better filtering performance than with conventional passive approaches. The active du/dt method uses a passive LC filter circuit at the output of the inverter with additional active control for controlling the filter output voltage. The active control is carried out using the same output stage as in the fundamental frequency modulation, therefore, no additional components are required. In addition, considerations of dimensioning the filter du/dt value according to the cable length and allowed voltage overshoot at the motor terminals resulting from cable reflection are presented.

Last updated on 2017-08-06 at 16:57

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