Offline method for determination of non‐linear dependence of machine magnetising inductance utilising parallel operation of current and voltage model

Lipcak, Ondrej; Bauer, Jan; Kobrle, Pavel

doi:10.1049/iet-pel.2018.6321

Cited by 3 publications

(5 citation statements)

References 26 publications

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“…In [26], a simple and intuitive method for offline identification of the load-dependent saturation of IM was proposed. The method in addition to the IM current model given by (1) also uses the socalled voltage model given by the following set of equations:…”

Section: Previous Methodsmentioning

confidence: 99%

“…In this section, we shall briefly summarise the advantages and disadvantages of the proposed method. As this paper is intended to improve the method presented in [26] (which will be in the following text addressed as the 'previous method'), differences between those two shall also be emphasised. It does depend on the rotor resistance; however, the change in the rotor resistance with temperature is considered by estimating the inverse rotor time constant by Q-MRAS.…”

Section: Pros and Cons Of The Proposed Methodsmentioning

confidence: 99%

“…In [26], a simple and intuitive method foroffline identification of the load‐dependent saturation of IM was proposed. Themethod in addition to the IM current model given by (1) also uses the so‐called voltagemodel given by the following set of equations:

\begin{matrix} right leftthickmathspace.5em \\ {\underline{ψ}}_{1} & = \int_{0}^{t} ({\underline{bold-italicu}}_{1} - R_{1} {\underline{i}}_{1}) normald τ, \\ {\underline{bold-italicψ}}_{2} & = \frac{L_{2}}{L_{m}} ()(, {\underline{ψ}}_{1} - σ L_{1} {\underset{bold_}{bold-italici}}_{1}), \end{matrix}

where

σ = 1 - L_{normalm}^{2} / L_{1} L_{2}

is the leakage factor.…”

Section: Load‐dependent Saturation Of Induction Motor and Proposed mentioning

confidence: 99%

Section: Load‐dependent Saturation Of Induction Motor and Proposed mentioning

confidence: 99%

“…This paper presents a new offline identification method based on a principle presented in [26]. It compares the values of the measured and estimated IM torque and tries to minimise the error between them by adjusting the value of the magnetising inductance.…”

Section: Introductionmentioning

confidence: 99%

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Offline method for experimental identification of load‐dependentsaturation of induction motor taking into account variation of inverse rotortime constant

Lipcak

Bauer

2020

IET Power Electronics

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Accurate knowledge of induction machine parameters has a direct impact on the overall performance of field-oriented control strategies. In the case of rotor flux oriented control, parameter mismatch causes a discrepancy in the estimated rotor flux position and amplitude. Magnetising inductance is one of the parameters whose detuning has a direct impact on the setpoints of the control loops and estimation of hardly or non-measurable quantities. Conventional iron saturation, which can be obtained by a standard no-load test, is not the only type of saturation occurring in the machine. Depending on the rotor design, the magnetising inductance and the rotor leakage inductance may also strongly saturate as a function of load and, thus, rotor current. Based on the authors' previous work, a new, improved experimental method for identifying the load-dependent saturation of induction motor, which takes into account variation of the inverse rotor time constant, is proposed. Experimental results conducted on 12 kW motor show improved static and dynamic behaviour of the drive compared to the constant parameter model.

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Section: Previous Methodsmentioning

confidence: 99%

Section: Pros and Cons Of The Proposed Methodsmentioning

confidence: 99%