Offline Compensation Method for Current Scaling Gains in AC Motor Drive Systems With Three-Phase Current Sensors
- Title
- Offline Compensation Method for Current Scaling Gains in AC Motor Drive Systems With Three-Phase Current Sensors
- Author
- 윤영두
- Keywords
- Sensors; Current measurement; AC motors; Measurement uncertainty; Harmonic analysis; Voltage control; Torque measurement; Current measurement error; current-sensor-induced torque ripple; offline compensation; three-phase current sensing
- Issue Date
- 2021-06
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Citation
- IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, v. 68, NO. 6, Page. 4760-4768
- Abstract
- This article proposes an offline compensation method for current scaling gains in the AC motor drive systems with three-phase current sensors. Many articles have been presented about the current scaling gain compensations of inverters. Most of them can be adopted during rotations. Those were studied for two-phase current sensing. Applications, such as elevators and hoist cranes, generally measure three-phase currents directly using three current sensors in preparation for a fault in any one of them. In this article, we present a compensation method for a three-phase current sensing system. This article analyzes the effect of current scaling gain errors on the neutral current that is calculated with measured stator currents. Based on the analysis, a compensation strategy for the current scaling gains is presented. The proposed method is applicable only at a standstill. It can be used for initial commissioning since it works at a standstill regardless of whether the rotor is locked or not. The experiments that demonstrate the validity of the proposed method were carried out in an elevator system as well as a laboratory. The proposed method is simple to be implemented and it requires no additional hardware.
- URI
- https://ieeexplore.ieee.org/document/9082188https://repository.hanyang.ac.kr/handle/20.500.11754/177961
- ISSN
- 0278-0046;1557-9948
- DOI
- 10.1109/TIE.2020.2989718
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > AUTOMOTIVE ENGINEERING(미래자동차공학과) > Articles
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