Analysis of a Variable Reluctance Permanent Magnet Actuator

Janssen, J.L.G.; Paulides, Jjh Johannes; Lomonova, E.A.; Vandenput, A.J.A.

doi:10.1109/07ias.2007.45

Cited by 14 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because of the accuracy, preferably highly linear voicecoil actuators [1][2][3][4][5] are applied instead of nonlinear reluctance actuators. [6][7][8][9][10][11][12][13][14][15][16] Nevertheless, reluctance actuators are able to achieve a more than 10 times higher force density than voicecoil actuators. 17 Until now, reluctance actuators are scarcely applied in high-precision applications because of the nonlinear magnetic hysteresis introduced by the soft-magnetic material.…”

Section: Introductionmentioning

confidence: 99%

Measurement method for determining the magnetic hysteresis effects of reluctance actuators by evaluation of the force and flux variation

Vrijsen

Jansen

Compter

et al. 2013

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

A measurement method is presented which identifies the magnetic hysteresis effects present in the force of linear reluctance actuators. The measurement method is applied to determine the magnetic hysteresis in the force of an E-core reluctance actuator, with and without pre-biasing permanent magnet. The force measurements are conducted with a piezoelectric load cell (Kistler type 9272). This high-bandwidth force measurement instrument is identified in the frequency domain using a voice-coil actuator that has negligible magnetic hysteresis and eddy currents. Specifically, the phase delay between the current and force of the voice-coil actuator is used for the calibration of the measurement instrument. This phase delay is also obtained by evaluation of the measured force and flux variation in the E-core actuator, both with and without permanent magnet on the middle tooth. The measured magnetic flux variation is used to distinguish the phase delay due to magnetic hysteresis from the measured phase delay between the current and the force of the E-core actuator. Finally, an open loop steady-state ac model is presented that predicts the magnetic hysteresis effects in the force of the E-core actuator.

show abstract

Section: Introductionmentioning

confidence: 99%

Measurement method for determining the magnetic hysteresis effects of reluctance actuators by evaluation of the force and flux variation

Vrijsen

Jansen

Compter

et al. 2013

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

show abstract

“…This avoids the necessity of guessing the shape of the path. The application of the elliptical function is possible because magnetic field lines tend to follow elliptical paths [41], [42]. When field lines are modeled as elliptical paths, two extreme cases are possible: straight-line paths, when the focal distance of the ellipse tends towards infinity, and circles, when the focal distance approaches zero.…”

Section: A Novel Methods For the Calculation Of Stray Path Reluctancesmentioning

confidence: 99%

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Gabdullin

2019

IEEE Access

View full text Add to dashboard Cite

This paper proposes a novel analytical method for the analysis of the dynamics of electrical machines. The method is applied to the analysis of complex permanent magnet (PM)-type magnetic contactors (MCs), which exhibit strong magnetic non-linearities and a high portion of stray and leakage magnetic fluxes. The latter means that the analysis of PM-type MCs using traditional magnetic equivalent circuit (MEC) methods is impossible, thus requiring computationally expensive and time-consuming finite element analysis (FEA). To overcome the limitations of traditional MECs, the magnetic field distribution in PM-type MC is studied in great detail, and a novel non-linear dynamic MEC (ND-MEC) method is proposed. The accuracy of the ND-MEC method is comparable to that of FEA which is achieved by accounting for non-linear effects and dynamic changes in the magnetic flux distribution using a novel stray path elliptical function. Furthermore, the applicability of the ND-MEC is extended to the time domain by combining it with the time difference method (TDM). The complete method, referred to as the non-linear transient path energy method (NT-PEM), combines the ND-MEC, TDM, and a path energy method for the calculation of electromagnetic forces. The validity of the NT-PEM is verified by comparing it with 3D FEA and experimental results obtained from a PM-type MC prototype. The NT-PEM is a fast and inexpensive alternative to FEA, which is particularly advantageous when many designs must be analyzed and optimized while reducing analysis costs. The proposed method can also be applied to the analysis of emerging technologies dealing with multiphysics coupled problems, as in the case of smart materials.INDEX TERMS Magnetic contactor, magnetic equivalent circuit (MEC), nonlinear dynamics, permanent magnets, stray flux modeling.

show abstract

“…However, Sheikh-Ghalavand et al and Yeo and Ro proposed the modeling of stray and leakage paths using circular arcs [26], [27]. Furthermore, Robertson et al [28], [29] and Janssen et al [30] and Tang et al [31], as well as Ravaud et al [32] and Babic and Akyel [33], proposed the use of an elliptical-like functions to model the interaction between the PM and coil, whereas Gabdullin and Ro recently proposed an algebraic representation for an elliptical flux path function that could be conveniently combined with MEC analysis for the purposes of stray flux calculation [24].…”

Section: Stray Path Reluctances In Nd-mec a Elliptical Mean Patmentioning

confidence: 99%

Analysis of Nonlinear Dynamics of Permanent Magnet Magnetic Contactor via Novel Computationally Efficient Analytical Method Considering Stray and Leakage Fluxes

Gabdullin

2020

IEEE Access

View full text Add to dashboard Cite

Improving the efficiency and end-use of energy distribution can significantly reduce global energy consumption. As the magnetic contactor (MC) is the most common switchgear used for control in most grids, minimizing its energy consumption has motivated the development of a permanent magnet (PM) MC that exhibits several advantages over conventional solenoid MCs. However, analyzing the transient magnetic behavior of a PM MC requires computationally expensive 3D finite element analysis (FEA). Herein, a modified version of a recently proposed nonlinear transient path energy method (NT-PEM) is proposed as an analytical alternative to FEA. Within the modification to NT-PEM, a new topology for nonlinear dynamic magnetic equivalent circuit (ND-MEC) is proposed with a methodology for accurate evaluation of stray and leakage flux path parameters. For coil leakage reluctances, a novel path function based on a conchoid's arc is proposed. For stray reluctances, a path function based on the average length of an elliptical arc is proposed. This path function, along with the proposed permeability correction for nonlinear core reluctance calculation routines, led to a four-fold reduction in NT-PEM analysis time from the original version of the proposed method. The feasibility of the proposed NT-PEM is verified via comparison with commercial 3D FEA and experimental data obtained from a PM MC with a single coil and single PM. NT-PEM and FEA equally displayed accurate results, indicating that NT-PEM is a promising computationally efficient alternative to FEA owing to significantly reduced analysis time, which is essential when considering numerous designs and design parameters.

show abstract

Analysis of a Variable Reluctance Permanent Magnet Actuator

Cited by 14 publications

References 9 publications

Measurement method for determining the magnetic hysteresis effects of reluctance actuators by evaluation of the force and flux variation

Measurement method for determining the magnetic hysteresis effects of reluctance actuators by evaluation of the force and flux variation

Novel Non-Linear Transient Path Energy Method for the Analytical Analysis of the Non-Periodic and Non-Linear Dynamics of Electrical Machines in the Time Domain

Analysis of Nonlinear Dynamics of Permanent Magnet Magnetic Contactor via Novel Computationally Efficient Analytical Method Considering Stray and Leakage Fluxes

Contact Info

Product

Resources

About