Online Detection of High-Resistance Connections With Negative-Sequence Regulators in Three-Phase Induction Motor Drives
- Authors
- Mengoni, Michele; Zarri, Luca; Gritli, Yasser; Tani, Angelo; Filippetti, Fiorenzo; Lee, Sang Bin
- Issue Date
- 3월-2015
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Fault detection; fault-tolerant drive; high-resistance connections; induction motor drive
- Citation
- IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, v.51, no.2, pp.1579 - 1586
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS
- Volume
- 51
- Number
- 2
- Start Page
- 1579
- End Page
- 1586
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/94262
- DOI
- 10.1109/TIA.2014.2360963
- ISSN
- 0093-9994
- Abstract
- High-resistance connections in electric drives can cause localized overheating and motor supply voltage unbalance, which degrade the performance, efficiency, and reliability of the system. An enhanced field-oriented control scheme for induction machines that is capable of detecting resistive unbalance due to high-resistance connections, and regulating the negative-sequence current is proposed as the main contribution of this paper. Resistive unbalance is detected and located while maintaining the symmetric drive behavior both under transient and steady-state operating conditions. The negative-sequence regulator adopted in addition to the traditional current regulator for rotor field-oriented control is used to compensate for the voltage unbalance caused by the inherent asymmetries in the cable and stator winding and by the poor contacts. A model that shows the relationship between the resistive unbalance and negative-sequence current components is derived from the analysis of the proposed scheme. The theoretical analysis and the validity of the detection technique are confirmed with an experimental study on a 4-kW induction motor drive.
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