DSP-based current control for inverter-fed permanent-magnet electrodynamic shaker

Hung-Chi Chen*, Yu Ching Lin, Jhen Yu Liao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Compared to the conventional analog-circuit control and linear power amplifier for permanent-magnet electrodynamic shaker (PMEDS), a DSP-based digital current control with switched-mode power amplifier is proposed in this paper. A full-bridge converter is connected directly to PMEDS without LC filter in order to directly regulate the shaker current and simplify the digital current control. To meet the vibration requirement of wide operating range (typically 5∼2kHz), the frequency of the unipolar switching scheme is increased to 50kHz PWM frequency in order to reduce the aliasing effect of the induced voltage and current harmonic sidebands. At the same time, dead-time compensation loop is also included in the digital current control to decrease the harmonics due to the dead-time in gate signals. The effectiveness of the proposed current control is verified by the provided simulation and measured results.

Original languageEnglish
Title of host publicationProceedings - IECON 2010, 36th Annual Conference of the IEEE Industrial Electronics Society
Pages433-438
Number of pages6
DOIs
StatePublished - 7 Nov 2010
Event36th Annual Conference of the IEEE Industrial Electronics Society, IECON 2010 - Glendale, AZ, United States
Duration: 7 Nov 201010 Nov 2010

Publication series

NameIECON Proceedings (Industrial Electronics Conference)

Conference

Conference36th Annual Conference of the IEEE Industrial Electronics Society, IECON 2010
CountryUnited States
CityGlendale, AZ
Period7/11/1010/11/10

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