Three-Phase Induction Motors Online Protection against Unbalanced Supply Voltages

被引：9

作者：

Laadjal, Khaled ^{[1
]}

Sahraoui, Mohamed ^{[1
,2
]}

Alloui, Abdeldjalil ^{[1
,3
]}

Cardoso, Antonio J. Marques ^{[1
]}

机构：

[1] Univ Beira Interior, CISE Electromechatron Syst Res Ctr, P-6201001 Covilha, Portugal

[2] Univ Mohamed Khider Biskra, Dept Elect Engn, Lab Genie Elect Biskra LGEB, Biskra 07000, Algeria

[3] Univ Mohamed Khider Biskra, Dept Elect Engn, Lab Modelisat Syst Energet LMSE, Biskra 07000, Algeria

来源：

MACHINES | 2021年 / 9卷 / 09期

关键词：

three-phase IMs; unbalanced supply voltage (USV); voltage negative factor (VNF); fortescue transform (FT); short time least square Prony's method (STLSP); PERFORMANCE;

D O I：

10.3390/machines9090203

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Three-phase induction motors (IMs) are the main workhorse in industry due to their many advantages as compared to other types of industrial motors. However, the efficiency and lifetime of IMs can be considerably affected by some operating conditions, in particular those related to unbalanced supply voltages (USV), which is quite a common condition in industrial plants. Therefore, early detection and a precise severity estimation of the USV for all working conditions can prevent major breakdowns and increase reliability and safety of industrial facilities. This paper proposes a reliable method allowing for a precise and online detection of the USV condition, by monitoring a pertinent indicator calculated using the voltage symmetrical components. The effectiveness of the proposed method is validated experimentally for several different working conditions, and a comparison with other indicators available in the literature is also performed.

引用

页数：13

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