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Diagnosis of inter-turn short circuit fault in IPMSMs based on the combined use of greedy tracking and random forest

Wang Jianping, Ma Jian, Meng Dean, Zhao Xuan, Zhang Kai, Liu Qiquan, Xu Kejie

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2024

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Vol. 72, nr 2

art. no. e148943

EN

Inter-turn short circuit (ITSC) is a frequent fault of interior permanent magnet synchronous motors (IPMSM). If ITSC faults are not promptly monitored, it may result in secondary faults or even cause extensive damage to the entire motor. To enhance the reliability of IPMSMs, this paper introduces a fault diagnosis method specifically designed for identifying ITSC faults in IPMSMs. The sparse coefficients of phase current and torque are solved by clustering shrinkage stage orthogonal matching tracking (CcStOMP) in the greedy tracking algorithm.The CcStOMP algorithm can extract multiple target atoms at one time, which greatly improves the iterative efficiency. The multiple features are utilized as input parameters for constructing the random forest classifier. The constructed random forest model is used to diagnose ITSC faults with the results showing that the random forest model has a diagnostic accuracy of 98.61% using all features, and the diagnostic accuracy of selecting three of the most important features is still as high as 97.91%. The random forest classification model has excellent robustness that maintains high classification accuracy despite the reduction of feature vectors, which is a great advantage compared to other classification algorithms. The combination of greedy tracing and the random forest is not only a fast diagnostic model but also a model with good generalisation and anti-interference capability. This non-invasive method is applicable to monitoring and detecting failures in industrial PMSMs.

2

Dead time effects compensation strategy by third harmonic injection for a five-phase inverter

Łuksza Krzysztof, Kondratenko Dmytro, Lewicki Arkadiusz

Archives of Electrical Engineering

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2024

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Vol. 73, nr 1

17--35

EN

This paper proposes a method for compensation of dead-time effects for a five-phase inverter. In the proposed method an additional control subsystem was added to the field-oriented control (FOC) scheme in the coordinate system mapped to the third harmonic. The additional control loop operates in the fixed, orthogonal reference frame (α − β coordinates) without the need for additional Park transformations. The purpose of this method is to minimize the dead-time effects by third harmonic injection in two modes of operation of the FOC control system: with sinusoidal supply and with trapezoidal supply. The effectiveness of the proposed control method was verified experimentally on a laboratory setup with a prototype five-phase interior permanent magnet synchronous machine (IPMSM). All experimental results were presented and discussed in the following paper.

3

Platforma badawcza silnika synchronicznego z magnesami trwałymi do zastosowania w napędach górniczych

Dzikowski A., Gąsior T., Przybyłka J., Dukalski P., Jarek T., Rossa R., Biskup T.

Maszyny Elektryczne : zeszyty problemowe

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2017

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Nr 2 (114)

221--229

PL

Artykuł prezentuje możliwości badawcze platformy wyposażonej w dwa bliźniacze silniki synchroniczne wzbudzane magnesami trwałymi typu IPMSM, zesprzęglone ze sobą poprzez momentomierz. Na platformie badawczej jeden z silników stanowi obciążenie dla drugiego badanego silnika, przy czym konfiguracja, który silnik napędza, a który obciąża jest dowolna. Silnik obciążający może obciążać silnik badany momentem stałym lub modulowanym, charakterystycznym np. dla elektrycznego napędu posuwu górniczego kombajnu ścianowego. W artykule przedstawiono również parametry obciążenia sieci zasilającej przez platformę badawczą, jakie wystąpiły w trakcie próbnego nagrzewania silnika badanego typu dSMKwsK 180M-4.

EN

The article presents the research platform equipped with two Interior mounted Permanent Magnet Synchronous Motors, connected to each other via a coupling and measuring shaft. On the research platform one motor operates as a load for the other. The configuration which motor should operate as the driving (tested) motor and which as the loading motor is arbitrary. The loading motor can load the tested motor with constant or modulated torque which for example is characteristic for electric haulage drive of mining longwall shearer. The article presents also the load parameters of the power supply network which occurred during the temperature rise test of the tested motor type dSMKwsK 180M-4 mounted on the research platform.

4

Sterowanie maszyną z zagłębionymi magnesami trwałymi zasilaną z falownika prądu

Morawiec M.

Przegląd Elektrotechniczny

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2011

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R. 87, nr 1

230-235

PL

W referacie przedstawiono układy sterowania silnikiem z magnesami trwałymi IPMSM zasilanym z falownika prądu: sterowanie prądowe oraz sterowanie napięciowe. Struktury układów regulacji są oparte o sterowanie multiskalarne. Wyprowadzono zależności określające zmienne sterujące maszyną. Przeprowadzono badania symulacyjne zaproponowanych układów regulacji.

EN

The control systems of permanent magnet synchronous motor IPMSM fed by current source inverter were presented in this paper (the current control and voltage control). The control systems based on multiscalar control. The mathematical equation was introduced. The simulation test was showed.