scholarly journals Development of method to design end-face synchronous motors made of amorphous steel using digital twin technology

Vestnik IGEU ◽  
2021 ◽  
pp. 38-46
Author(s):  
A.I. Tikhonov ◽  
A.V. Stulov ◽  
A.V. Likhachova ◽  
M.I. Nikiforov ◽  
I.V. Eryomin
Keyword(s):  
Magnetic Field ◽  
Synchronous Motor ◽  
Object Oriented Programming ◽  
Electrical Machines ◽  
Design System ◽  
Engineering Analysis ◽  
Generative Design ◽  
Angular Characteristic ◽  
Digital Twin ◽  
Standard Design

Modern technologies of generative design and digital twins of electrical devices are based on the use of field models, as a rule, three-dimensional ones. Also, it is possible to solve design problems and to simulate accurately electrical machines and devices based on a set of 2D models of physical fields. Application of automatically generated field models in modern systems of engineering analysis during the design and optimization of electrical machines and devices makes it possible to get rid of many assumptions and outdated empirical and semi-empirical dependencies, as well as to reach a new methodological level of design theory, characterized by a unified approach to the calculation of various devices. Therefore, the purpose of this article is to develop a methodology to design a synchronous motor of an atypical design, based on the use of two-dimensional models of a stationary magnetic field at different design stages and allowing a solution to be obtained even in the absence of preliminary studies and recommendations. The finite element method is used implemented by means of the EMLib library (author's development), which allows calculating magnetic fields in a 2D formulation. Also, methods of the theory of synchronous machines and object-oriented programming in VBA in the MSExcel environment are used. Elements of digital twin technology and generative design are used while developing the methodology and design system. A method to design an end-face synchronous motor has been developed using automatically generated set of field models at the stages of choosing the height of a permanent magnet, calculating the parameters of an equivalent circuit, and an angular characteristic. Based on the popular MSExcel package, a system to design an end-face synchronous motor has been developed. The EMLib library has been implemented into the system, it allows using the results of calculating the magnetic field in the key design operations. The end-face synchronous motor has been designed and tested on the base of the developed system. The results of the research can be used during the development of methods to design electrical machines and devices of arbitrary, including non-standard design, for which approved algorithms for engineering analysis do not exist.

Study of Reactance Evaluation Methods in Saturated Magnetic Field for Permanent Magnet Synchronous Motor

2006 ◽  
Vol 126 (12) ◽  
pp. 1722-1729 ◽  
Author(s):  
Akeshi Takahashi ◽  
Haruo Koharagi ◽  
Satoshi Kikuchi ◽  
Kazumasa Ide ◽  
Kazuo Shima
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Evaluation Methods

A Framework for Component Layout and Geometry Design of Mechanical Systems: Configuration Network and its Viewing Control

1995 ◽  
Author(s):  
Kikuo Fujita ◽  
Shinsuke Akagi
Keyword(s):  
Design Method ◽  
Mechanical Systems ◽  
Optimization Procedure ◽  
Computational Design ◽  
Object Oriented Programming ◽  
Design System ◽  
Air Conditioner ◽  
Programming Technique ◽  
Geometry Design ◽  
Component Layout

Abstract A Framework of computational design method and model is proposed for layout and geometry design of complicated mechanical systems, which is named “configuration network and its viewing control”. In the method, a design object is represented with a set of declarative relationships among various elements of a system, that is, configurations, which is gradually extended from schematic structure to exact layout and geometry through design process. Since a whole of such configurations forms a too complicated network to compute all together, how to view subparts is controlled based on levels of granularity and width of scope range. Such a configuration network is made to grow and refined through embodying geometry and layout corresponding to a focused subpart with a numerical optimization procedure. The framework has also an ability to flexibly integrate with engineering analysis. Moreover, a design system is implemented with an object-oriented programming technique, and it is applied to a design problem of air conditioner units in order to show the validity and effectiveness of the framework.

scholarly journals Ferrofluid lubrication of circular squeeze film bearings controlled by variable magnetic field with rotations of the discs, porosity and slip velocity

2017 ◽  
Vol 4 (12) ◽  
pp. 170254
Author(s):  
Rajesh C. Shah ◽  
Rajiv B. Shah
Keyword(s):  
Magnetic Field ◽  
Slip Velocity ◽  
Magnetic Particles ◽  
Reynolds Equation ◽  
Variable Magnetic Field ◽  
Squeeze Film ◽  
Design System ◽  
Porous Region ◽  
Different Shapes ◽  
Bearing Design

Based on the Shliomis ferrofluid flow model (SFFM) and continuity equation for the film as well as porous region, modified Reynolds equation for lubrication of circular squeeze film bearings is derived by considering the effects of oblique radially variable magnetic field (VMF), slip velocity at the film–porous interface and rotations of both the discs. The squeeze film bearings are made up of circular porous upper disc of different shapes (exponential, secant, mirror image of secant and parallel) and circular impermeable flat lower disc. The validity of Darcy's Law is assumed in the porous region. The SFFM is important because it includes the effects of rotations of the carrier liquid as well as magnetic particles. The VMF is used because of its advantage of generating maximum field at the required active contact area of the bearing design system. Also, the effect of porosity is included because of its advantageous property of self-lubrication. Using Reynolds equation, general form of pressure equation is derived and expression for dimensionless load-carrying capacity is obtained. Using this expression, results for different bearing design systems (due to different shapes of the upper disc) are computed and compared for variation of different parameters.

scholarly journals Architectural Design Exploration Using Generative Design: Framework Development and Case Study of a Residential Block

Buildings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 201
Author(s):  
Jani Mukkavaara ◽  
Marcus Sandberg
Keyword(s):  
Architectural Design ◽  
Solution Space ◽  
Energy Performance ◽  
Design System ◽  
Future Research ◽  
Generative Design ◽  
Design Exploration ◽  
Novel Approach ◽  
Generative Algorithms

The use of generative design has been suggested to be a novel approach that allows designers to take advantage of computers’ computational capabilities in the exploration of design alternatives. However, the field is still sparsely explored. Therefore, this study aimed to investigate the potential use of generative design in an architectural design context. A framework was iteratively developed alongside a prototype, which was eventually demonstrated in a case study to evaluate its applicability. The development of a residential block in the northern parts of Sweden served as the case. The findings of this study further highlight the potential of generative design and its promise in an architectural context. Compared to previous studies, the presented framework is open to other generative algorithms than mainly genetic algorithms and other evaluation models than, for instance, energy performance models. The paper also presents a general technical view on the functionality of the generative design system, as well as elaborating on how to explore the solution space in a top-down fashion. This paper moves the field of generative design further by presenting a generic framework for architectural design exploration. Future research needs to focus on detailing how generative design should be applied and when in the design process.

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