Phase-to-phase fault detection method for synchronous reluctance machine using MEC method

Naderi, Peyman; Rostami, Mohsen; Ramezannezhad, Arman

doi:10.1007/s00202-019-00806-9

Cited by 9 publications

(5 citation statements)

References 23 publications

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“…According to Figure 2, the winding turns are divided into two equal parts among the 2nd and 4th zones. Assuming Y N connection for windings and M s as the windings turn function, the electrical equation can be obtained by applying KVL in the stator windings as equation (35): where R s and L refer to the resistance of the stator windings matrix and external inductance matrix compensating the end effect matrix, respectively (Naderi, 2017; Naderi et al , 2019). Hence, the overhang windings effect (end-effect) can be modeled by external inductance ( l n ) in the proposed MEC.…”

Section: The Proposed Magnetic Equivalent Circuit Methodsmentioning

confidence: 99%

Modeling and analysis of variable reluctance resolver using magnetic equivalent circuit

Rostami

Naderi

Shiri

2021

COMPEL

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Purpose The purpose of this paper is to propose a saturable model based on the magnetic equivalent circuit (MEC) for evaluating the electromagnetic performance of the variable area resolver. Design/methodology/approach The equivalent circuit is developed where three different reluctance types are used to calculate permeances based on geometrical approximations. The proposed model typically has two types of equations, including the magnetic and electrical equations. The magnetic and electrical equations are related to the resolver core and the windings, respectively. Applying the well-known trapezoidal method, the magnetic and electrical equations can be simultaneously solved. A nonlinearity of the magnetic equations, the algebraic equations system, which is obtained from Kirchhoff’s laws, should be solved by the Newton-Raphson technique in each step-time. Findings The flexible MEC model, in which the number of flux tubes in different parts of the resolver can be arbitrarily selected, is proposed to analyze the variable reluctance resolver. Besides, the design parameters such as geometrical dimensions, windings arrangement and a number of the rotor saliencies can be chosen as desired. To consider the effect of time harmonics, a new nonlinear function is used for the core magnetization. Furthermore, different winding layouts can be implemented in the model to take space harmonics into account. The model obtained results are compared with the finite element method in terms of accuracy and simulation time. Originality/value Generally, the accuracy of the predictions in the MEC method is dependent on the number of flux tubes; therefore, the flexibility of the proposed MEC model in its capability to choose the desired number of flux paths is the advantage of this work. Moreover, the proposed model can analyze both wound and saliency rotor resolvers by changing the design parameters.

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Section: The Proposed Magnetic Equivalent Circuit Methodsmentioning

confidence: 99%

Modeling and analysis of variable reluctance resolver using magnetic equivalent circuit

Rostami

Naderi

Shiri

2021

COMPEL

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“…Contrary to MCC, where resistances and inductances must be estimated, in the case of MEC models, reluctances, R , or permeances must be obtained, usually via geometry calculations. The magneto-motive forces can be approximated through FEM-based simulations or the phase currents [ 68 ]. These permeances are expressed as functions of the machine geometry and the instantaneous fluxes.…”

Section: Models Based On Magnetic Circuitsmentioning

confidence: 99%

A Review of Techniques Used for Induction Machine Fault Modelling

Terron-Santiago

Martínez-Román

Puche-Panadero

2021

Sensors

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Over the years, induction machines (IMs) have become key components in industry applications as mechanical power sources (working as motors) as well as electrical power sources (working as generators). Unexpected breakdowns in these components can lead to unscheduled down time and consequently to large economic losses. As breakdown of IMs for failure study is not economically feasible, several IM computer models under faulty conditions have been developed to investigate the characteristics of faulty machines and have allowed reducing the number of destructive tests. This paper provides a review of the available techniques for faulty IMs modelling. These models can be categorised as models based on electrical circuits, on magnetic circuits, models based on numerical methods and the recently proposed in the technical literature hybrid models or models based on finite element method (FEM) analytical techniques. A general description of each type of model is given with its main benefits and drawbacks in terms of accuracy, running times and ability to reproduce a given fault.

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“…The position‐permeances between the stator and rotor nodes are modelled by

G_{ij}(\theta )

(

1\le i \le n_{tr}

and

1\le j \le n_{ts}

). Calculation procedure of the air‐gap permeances is as follows [36], [34]:

\begin{equation} \vartheta (\theta )=\log \left(\frac{\cosh \left(\pi \frac{\theta -{\gamma}_{t}}{2\beta}\right)\cosh \left(\pi \frac{\theta +{\gamma}_{t}}{2\beta}\right)}{\cosh \left(\pi \frac{\theta}{2\beta}\right)\cosh \left(\pi \frac{\theta}{2\beta}\right)}\right)-\frac{\gamma {t}^{2}}{2\beta}, \end{equation}

\begin{equation} Gp(\theta ) =\frac{\mu _0.l}{\delta }\times min{\left(\frac{2\pi }{n_{ts}},\frac{2\pi }{n_{tr}}\right)}. {\left(\frac{{\vartheta (\theta ) - \vartheta (\pi )}}{{\vartheta (0) - \vartheta (\pi )}}\right)} .\end{equation}

By defining Equations (…”

Section: The Machine Structurementioning

confidence: 99%

“…The position-permeances between the stator and rotor nodes are modelled by G i j (𝜃) (1 ≤ i ≤ n tr and 1 ≤ j ≤ n ts ). Calculation procedure of the air-gap permeances is as follows [36], [34]:…”

Section: Air-gap Permeancesmentioning

confidence: 99%

Modelling and analysis of permanent magnet vernier machine using flexible magnetic equivalent circuit method

Rostami

Naderi

Shiri

2021

IET Science Measure & Tech

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This paper develops a new model with adjustable accuracy to evaluate performance of permanent magnet Vernier machine (PMVM) based on flexible magnetic equivalent circuit (MEC) method. The desired machine parameters such as number of flux modulation poles (FMPs), winding pole-pairs, and geometrical dimensions can be chosen in the presented model. By utilizing nonlinear core magnetization curve, saturation effect is taken into account. There are two main contributions in this study. First, the flexible MEC model is developed to predict the machine performance accurately. The second contribution is that the developed model can be used to evaluate the performance of the machine under no-load and loading conditions at the same time. The results of MEC model under no-load and loading conditions are compared with 2D-finite element method (FEM) and 3D-FEM in terms of accuracy and simulation time. The results indicate acceptable accuracy and suitable processing time of the proposed MEC model.

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Phase-to-phase fault detection method for synchronous reluctance machine using MEC method

Cited by 9 publications

References 23 publications

Modeling and analysis of variable reluctance resolver using magnetic equivalent circuit

Modeling and analysis of variable reluctance resolver using magnetic equivalent circuit

A Review of Techniques Used for Induction Machine Fault Modelling

Modelling and analysis of permanent magnet vernier machine using flexible magnetic equivalent circuit method

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