Filter-based Current Sensing with Self-tuning in power electronics Applications for increasing accuracy and decreasing losses
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 5, Issue 9
Abstract
Motor current is used as a control variable in motor drives. Vector control and direct torque control require current sensing for control purposes. Speed sensorless and voltage sensorless control approaches require motor current measurement to provide accurate control with lower cost, noise, and complexity. Motor current measurement is also required to remove torque ripple in order to provide smooth torque. This value is exposed to temperature changes and inaccuracy. It is better to use self-tuning methods in order to remove undesirable effects resulting from temperature, component tolerance and noise. In this article, we examine filter-based current sensing in order to overcome this problem which lossless, high accuracy, low switching noise as well as continuous current measurement are its main advantages.
Authors and Affiliations
Yaser Noori Shirazi| Islamic Azad University, Arak Branch, Arak, Iran., Abdolreza Esmaili| Plasma Physics and Nuclear Fusion Research School, Nuclear Science and Technology Research Institute,Tehran, Iran. email: aesmaeli@aeoi.org.ir
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