Diagnosis of broken rotor bar fault in open‐ and closed‐loop controlled wye‐connected induction motors using zero‐sequence voltage
| Autor: | Ming Ye, Hou Zhaowen, Jin Huang, Liu Zijian, Jiaqiang Yang, He Liu |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Computer science 020208 electrical & electronic engineering Control engineering 02 engineering and technology 01 natural sciences Fault detection and isolation Robustness (computer science) Control theory 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Motor speed Load torque Electrical and Electronic Engineering Closed loop Induction motor Machine control Voltage |
| Zdroj: | IET Electric Power Applications. 11:1214-1223 |
| ISSN: | 1751-8679 1751-8660 |
| DOI: | 10.1049/iet-epa.2016.0505 |
| Popis: | This study proposes a method to detect and quantify broken rotor bar fault using zero-sequence voltage in a wye-connected squirrel-cage induction motor. The zero-sequence voltage is analysed and two fault severity factors are defined. The factors are almost independent of motor speed and load torque. Furthermore, it is proved that closed-loop control has little influence on the diagnosis results. Consequently, the method can detect broken rotor bar fault for induction motors in both open- and closed-loop drives. Moreover, the method can discriminate the broken bar fault from a low-frequency load oscillation, even when these two phenomena occur simultaneously. In addition, the influence of unbalanced voltage supply on the diagnosis results is negligible. The effectiveness and robustness of the proposed method have been validated by experimental results. |
| Databáze: | OpenAIRE |
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