Iron loss in rotor-flux-oriented induction machines: identification, assessment of detuning, and compensation

Levi, E.; Sokola, M.; Boglietti, Aldo; Pastorelli, M.

doi:10.1109/63.535402

Cited by 113 publications

(59 citation statements)

References 9 publications

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“…1 The resistance function R can be interpreted as a parallel connection of two resistances: the constant resistance R Ft related to the eddy-current losses and the voltage-and flux-dependent nonlinear resistance…”

Section: B Dynamic Modelmentioning

confidence: 99%

“…Depending on the degree of accuracy required from the model, various phenomena can be considered or omitted. For instance, incorporating iron losses into the model topology enhances the accuracy of the identified parameters and, therefore, the control of the motor [1]. Iron losses should also be taken into account in simulation models used in research and development of new control strategies, such as loss minimization control.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Inclusion of hysteresis and eddy current losses in dynamic induction machine models

Ranta¹,

Hinkkanen²,

Dlala³

et al. 2009

2009 IEEE International Electric Machines and Drives Conference

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Section: B Dynamic Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Inclusion of hysteresis and eddy current losses in dynamic induction machine models

Ranta¹,

Hinkkanen²,

Dlala³

et al. 2009

2009 IEEE International Electric Machines and Drives Conference

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“…Desta forma, os resultados reais serão diferentes dos de projeto. Ainda, diversos trabalhos relatam que o sistema de controle pode perder a sintonia caso as perdas no ferro sejam desprezadas [17], [18]. Como a frequência das variáveis elétricas do rotor é igual à do estator vezes o escorregamento, para o caso de motores de indução, em que o escorregamento é cerca de 0,05, a perda no ferro do estator trata-se da parte dominante da perda total no ferro [9].…”

Section: Introductionunclassified

Estimação de Parâmetros e Controle de um Gerador de Indução Duplamente Alimentado Durante a Sincronização com a Rede Elétrica

Celso¹,

Lima²,

Neto³

et al. 2017

Eletrônica de Potência

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Resumo -O modelo matemático clássico do gerador de indução duplamente alimentado não considera as perdas no núcleo magnético e suplementares. Porém, ele é válido quando o gerador entrega sua potência nominal, o que não ocorre no processo de sincronização, onde o gerador está a vazio. Em geral, os modelos que consideram essas perdas tornam o equacionamento mais complexo. Neste sentido, este artigo propõe que se considerem estas perdas como agrupadas na resistência do rotor, o que mantém as equações da máquina inalteradas. Ainda, apresenta-se um mé-todo simplificado para a estimação dos parâmetros do circuito do rotor, os quais são utilizados para sintonizar os controladores de corrente durante o processo de sincronização à rede elétrica. Os resultados de simulação e experimentais confirmam a eficácia da abordagem proposta.Palavras-Chave -Estimação de Parâmetros, Gerador de Indução Duplamente Alimentado, Sincronização. PARAMETER ESTIMATION AND CONTROL OF A DOUBLY-FED INDUCTION GENERATOR DURING THE SYNCHRONIZATION WITH THE GRIDAbstract -The conventional mathematical model of the doubly-fed induction generator does not take into account the magnetic core and the stray load losses. However, this model is valid when the generator delivers its rated power, which does not occur during the synchronization process, as it is a no-load situation. In general, the models that consider these losses make the equations more complex. Thus, this paper proposes to consider these losses as grouped in the rotor resistance, which keeps unchanged the machine equations. In addition, a simplified method is presented for estimation of rotor circuit parameters, which are used to tune the current controllers during the process of synchronization with the grid. The simulation and experimental results confirm the effectiveness of the proposed approach.

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“…αβ Dynamic Model Equations. The model of the IM is developed using the space vector representation in the stator reference frame and considering the iron losses [20][21][22]. The voltage equations are the same as those used in traditional IM models: Similarly, the flux equations can be expressed as follows:…”

Section: Dynamic Model Of the Induction Machine Considering The Iron mentioning

confidence: 99%

“…In practice, commercial motor drives usually provide online compensation for the saturation of the magnetizing inductance and the temperature drift of the rotor resistance. The former is typically based on a Look Up Table (LUT), generated by taking offline measurements, ideally by freely rotating the motor unloaded [20][21][22]. The latter is usually estimated online by employing a Model Reference Adaptive System (MRAS) approach, based on the calculation of the reactive power.…”

Section: Introductionmentioning

confidence: 99%

Rotor flux oriented control of induction machine based drives with compensation for the variation of all machine parameters

Extremiana

Abad²,

Arza

et al. 2013

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract. The performance of rotor flux oriented induction motor drives, widely used these days, relies on the accurate knowledge of key machine parameters. In most industrial drives, the rotor resistance, subject to temperature variations, is estimated on-line due to its significant influence on the control behaviour. However, the rest of the model parameters are also subject to slow variations, determined mainly by the operating point of the machine, compromising the dynamic performance and the accuracy of the torque estimation.This paper presents an improved rotor-resistance on-line estimation algorithm that contemplates the iron losses of the electrical machine, the iron saturation curve and the mechanical losses. In addition, the control also compensates the rest of the key machine parameters such as the leakage and magnetizing inductances and the iron losses. These parameters are measured by an off-line estimation procedure and stored in look up-tables used by the control. The paper begins by presenting the machine model and the proposed rotor flux oriented control strategy. Subsequently, the off-line parameter measurement procedure is described. Finally, the algorithm is extensively evaluated and validated experimentally on a 15 kW test bench.

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Iron loss in rotor-flux-oriented induction machines: identification, assessment of detuning, and compensation

Cited by 113 publications

References 9 publications

Inclusion of hysteresis and eddy current losses in dynamic induction machine models

Inclusion of hysteresis and eddy current losses in dynamic induction machine models

Estimação de Parâmetros e Controle de um Gerador de Indução Duplamente Alimentado Durante a Sincronização com a Rede Elétrica

Rotor flux oriented control of induction machine based drives with compensation for the variation of all machine parameters

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