SINGLE CURRENT SENSOR TECHNIQUE IN THE DC LINK OF 3-PHASE PWM-VS INVERTERS - A REVIEW AND A NOVEL SOLUTION

Authors
BLAABJERG F PEDERSEN JK JAEGER U THOEGERSEN P
Citation
F. Blaabjerg et al., SINGLE CURRENT SENSOR TECHNIQUE IN THE DC LINK OF 3-PHASE PWM-VS INVERTERS - A REVIEW AND A NOVEL SOLUTION, IEEE transactions on industry applications, 33(5), 1997, pp. 1241-1253
Citations number
24
Categorie Soggetti
Engineering,"Engineering, Eletrical & Electronic
Journal title
IEEE transactions on industry applications → ACNP
ISSN journal
00939994
Volume
33
Issue
5
Year of publication
1997
Pages
1241 - 1253
Database
ISI
SICI code
0093-9994(1997)33:5<1241:SCSTIT>2.0.ZU;2-8
Abstract
A review of the existing methods to determine the output currents in a pulsewidth modulation voltage-source (PWM-VS) inverter using a single current sensor in the dc link is presented, and a novel solution is p roposed. The unique arrangement of the dc link allows full protection of the inverter from short circuits and overloads. Also, a new method of sampling the dc-link current is described that produces true values of the output currents at the centers of switching intervals. Results of investigation of an experimental setup have shown that full protec tion of the inverter has been accomplished and the output currents can accurately be determined within the whole operating area.