NDLI: A first evaluation on the usage of threshold triggered magnetic field sensors for current polarity detection in power conversion systems

Content Provider	IEEE Xplore Digital Library
Author	Krauss, S. Hofmann, W.
Copyright Year	2007
Description	Author affiliation: Chemnitz Chemnitz Univ. of Technol., Chemnitz (Krauss, S.; Hofmann, W.)
Abstract	Dead-time effects as consequence of the finite switching time of the power switches in power conversion systems have been investigated over a long period. Multiple techniques to eliminate or reduce the dead-time effect have been proposed over the last years. Beside the reduction of the semiconductor switching times, the main idea is to compensate the dead-time effect with the averaged dead-time error-voltage. A more feasible method is based on the knowledge of the phase current polarity, whereas only those semiconductors are active switched, which are able to conduct the current in the actual direction. The resulting commutation strategy, already known as one-step commutation, is suitable for voltage source converters as well as for matrix converters. Beside conventional current sensors, based on the hall-effect, alternative techniques for phase current polarity determination, like the current detection adapted from the forward current-voltage characteristic of the used semiconductors, were described and tested. This paper focusses the potential of threshold triggered magnetic field sensors. Already known as sensor for discrete position and velocity measurement, the pulse wire sensor seems to be suitable as information source for phase current sign. Next to a statistical investigation of the sensor parameter, a proposal for solution, concerning the two basic problems, which accompany the operation of this sensor, is given and verified with experimental results.
Starting Page	1
Ending Page	9
File Size	619778
Page Count	9
File Format	PDF
ISBN	9789275815108
DOI	10.1109/EPE.2007.4417697
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-09-02
Publisher Place	Denmark
Access Restriction	Subscribed
Rights Holder	EPE Association
Subject Keyword	Measurement Sensor phenomena and characterization Component for measurements Sensor systems Power conversion Phase detection Matrix Converter Magnetic sensors Current-voltage characteristics Voltage Signal processing Voltage Source Converter Matrix converters Semiconductor device testing Power semiconductor switches Sensor
Content Type	Text
Resource Type	Article

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