Novel Analytical Method for Overhang Effects in Surface-Mounted Permanent-Magnet Machines

Yeo, Han-Kyeol; Ro, Jong‐Suk

doi:10.1109/access.2019.2939939

Cited by 18 publications

(16 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is noteworthy that the computational time in FEA depends on the sizes of the mesh element as well as the model size, leading to an enormous number of equations to be solved for large 3D models [45]. However, the computational time of NT-PEM depends on the complexity of the ND-MEC, i.e., the number of branches and matrix size in (27) and not on the physical size of the analyzed model. This implies that by carefully choosing an ND-MEC and reducing its complexity according to the recommendations presented in this study, the computational costs of NT-PEM can be expected to increase with the size of the analyzed contactor slower than in the case of FEA.…”

Section: Accuracy and Speed Of The Proposed Analysis Methodsmentioning

confidence: 99%

“…Conventionally, the same model, i.e., that with straight-line paths, was used for stray regions, while neglecting the distortion to the path and shape of the flux tube [25]. 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%

See 1 more Smart Citation

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

Gabdullin

2020

IEEE Access

Self Cite

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

Section: Accuracy and Speed Of The Proposed Analysis Methodsmentioning

confidence: 99%

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…I NDUCTION machines are widely used in industrial applications, such as conveyor belts and electric motors, because they are relatively robust, cost-effective, and simple in design. With the progressive development of electric vehicles and renewable wind energy utilizationnowadays, induction motor (IM) control design is increasingly important in both research and industry, as the complex, nonlinear models of these motors make precise control difficult [1], [2]. Direct torque control (DTC) schemes, also known as bang-band controllers, were initially proposed for the IM by Takahashi and Noguchi in 1986 [3], and by Depenbrock in 1988 [4], and are used extensively for high-performance AC drives for their simple decoupled topology.…”

Section: Introductionmentioning

confidence: 99%

Integral Super Twisting Sliding Mode Based Sensorless Predictive Torque Control of Induction Motor

et al. 2020

Self Cite

View full text Add to dashboard Cite

In the direct torque control (DTC) of induction motor (IM) drive systems utilizing model predictive torque control (MPTC) in the inner loop and classical proportional integral (PI) control in the outer loop is prone to weaknesses, such as uncertainties, external disturbances, parameter variations, and nonlinear dynamics. A high-performance control system for speed and torque is required to guarantee a smooth and robust control architecture that can withstand such unpredictable effects. In this study, we propose an integral super twisting sliding mode control (ISTSMC) to address the shortcomings of the classical PI used in the outer loop of DTC drive systems. A sliding mode speed observer is also designed and utilized to overcome problems associated with mechanical sensors. The robustness of the proposed control strategy and fast dynamic speed response are compared favorably with a benchmark PI controller and conventional sliding mode control (SMC). The ability of the proposed system to regulate both speed and torque was evaluated through simulations, under various fault perturbations, parameter variations, and load disturbances, conducted in MATLAB/ Simulink. Various performance indices were used to demonstrate the superior performance of the proposed strategy compared to a benchmark PI system and conventional SMC-based MPTC approaches.

show abstract

“…FEA is generally used for electric machine characteristic analysis [25]- [28]. FEA is a time consuming but highly accurate analysis method.…”

Section: Introductionmentioning

confidence: 99%

Novel Analytical Method for Overhang Effects in Surface-Mounted Permanent-Magnet Machines

Cited by 18 publications

References 42 publications

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

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

Integral Super Twisting Sliding Mode Based Sensorless Predictive Torque Control of Induction Motor

Analysis and Design of an Axial Flux Permanent Magnet Motor for in-Wheel System Using a Novel Analytical Method Combined With a Numerical Method

Contact Info

Product

Resources

About