Accurate Determination of Induction Machine Torque and Current Versus Speed Characteristics

Agamloh, Emmanuel; Cavagnino, Andrea; Vaschetto, Silvio

doi:10.1109/tia.2017.2675984

Cited by 8 publications

(1 citation statement)

References 7 publications

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“…It is also proposed in a differential evolution algorithm-based methodology for an accurate estimation of asynchronous motor ECPs that takes into account temperature, magnetic saturation, and surface layer effect [16]. Finite element analysis (FEA), analytical and numerical approaches are also used to calculate ECPs on over these effects [17]- [20]. In addition, the finite element method (FEM) is another scheme used to determine the increase in temperature in electrical machines and also to analyze the thermal behavior of electrical machines [21]- [23].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Investigation of Temperature Effect on Induction Motor Equivalent Circuit Parameter Change

Terzioğlu¹,

Ağaçayak²

2022

ELEKTRON ELEKTROTECH

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Today’s developing technology and increasing demands in production areas continue the importance of studies on induction motors (IMs). To meet the demands, the mathematical modeling of IMs must be performed fully and accurately. Variable conditions cause changes in many electrical, magnetic, and thermal parameters. A change in parameters affects the intensity, efficiency of the operating currents of the machine, thereby changing the motor losses. In this article, the objective is to determine the changes in the equivalent circuit parameters of three-phase squirrel-cage induction motors (SCIMs) with different powers under the variable conditions (stator winding temperature, load, and motor shaft speed). Supervisory control and data acquisition (SCADA) program read real-time information (temperature, current, voltage, power, shaft speed, and torque) from the experiments and necessary calculations were made. When the test results were examined, a maximum of 9 % change was observed in the motor ECPs (RS, R2, RM, XS, X2, and XM) at different shaft speeds as a result of the change in the stator winding temperature between 100 % and 110 %. At different loads, this rate of change increases to 16 %. This has shown that motor shaft speed and load, together with temperature, have a significant effect on the ECPs.

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Section: Introductionmentioning

confidence: 99%

Real-Time Investigation of Temperature Effect on Induction Motor Equivalent Circuit Parameter Change

Terzioğlu¹,

Ağaçayak²

2022

ELEKTRON ELEKTROTECH

View full text Add to dashboard Cite

show abstract

Data‐driven online temperature compensation for robust field‐oriented torque‐controlled induction machines

Phuc

Vansompel

Bozalakov

et al. 2019

IET Electric Power Applications

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Squirrel-cage induction machines (IMs) with indirect field-oriented control are widely used in industry and are frequently chosen for their accurate and dynamic torque control. During operation, however, temperature rises leading to changes in machine parameters. The rotor resistance, in particular, alters, affecting the accuracy of the torque control. The authors investigated the effect of a rotor resistance parameter mismatch in the control algorithm on the angular rotor flux misalignment and the subsequent deviation of stator currents and motor torque from their setpoints. Hence, an online, datadriven torque compensation to eliminate the temperature effect is proposed to enable robust torque-controlled IMs. A modelbased analysis and experimental mapping of the temperature effect on motor torque is presented. A temperature-torque lookuptable is subsequently implemented within the control algorithm demonstrating the ability to reduce the detrimental effect of temperature on torque control. Experimental results on a 5.5 kW squirrel-cage induction motor show that the proposed datadriven online temperature compensation method is able to reduce torque mismatch when compared to having no temperature compensation. Up to 17% torque mismatch is reduced at nominal torque and even up to 23% at torque setpoints that are lower than 20% of the nominal torque. A limited torque error of <1% remains in a broad operating range.

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Alternative methods for electric machine rated load temperature tests

Agamloh

Vaschetto

Cavagnino

et al. 2020

2020 IEEE Energy Conversion Congress and Exposition (ECCE)

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Accurate Determination of Induction Machine Torque and Current Versus Speed Characteristics

Cited by 8 publications

References 7 publications

Real-Time Investigation of Temperature Effect on Induction Motor Equivalent Circuit Parameter Change

Real-Time Investigation of Temperature Effect on Induction Motor Equivalent Circuit Parameter Change

Data‐driven online temperature compensation for robust field‐oriented torque‐controlled induction machines

Alternative methods for electric machine rated load temperature tests

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