Current Measurement Gain Tuning Using High Frequency Signal Injection

被引：0
|
作者：
Harke, Michael C. [1 ]
Guerrero, Juan M. [2 ]
Degner, Michael W. [3 ]
Briz, Fernando [2 ]
Lorenz, Robert D. [4 ]
机构：
[1] Hamilton Sundstrand, Appl Res, POB 7002,MD 277-6, Rockford, IL 61125 USA
[2] Univ Oviedo, Dept Elect & Comp Syst Engn, S-33204 Gijon, Spain
[3] Ford Motor Co, Res & Adv Engn, Dearborn, MI 48121 USA
[4] Univ Wisconsin, Dept Mech Engn, Dept Elect & Comp Engn, Madison, WI 53706 USA
来源：
CONFERENCE RECORD OF THE 2007 IEEE INDUSTRY APPLICATIONS CONFERENCE FORTY-SECOND IAS ANNUAL MEETING, VOLS. 1-5 | 2007年
关键词：
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Accurate measurement of the phase currents in electric machines is a requirement for most high performance drives. Incorrect current measurement gain estimates, caused by device tolerances, temperature drifts, age and noise, reduce the accuracy of the current measurements and degrade the drive's performance. This paper presents a method for compensating current measurement gain errors using a periodically injected, high frequency voltage. The positive and negative sequence components of the resulting high frequency current are measured and used for balancing and scaling the phase current measurement gains. The method can be used either as part of an initial commissioning, or start-up sequence, or periodically during the regular operation of the machine.
引用
收藏
页码：2058 / +
页数：2
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