scholarly journals Fast Computation of Multi-Parametric Electromagnetic Fields in Synchronous Machines by Using PGD-Based Fully Separated Representations

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1454
Author(s):  
Abel Sancarlos ◽  
Chady Ghnatios ◽  
Jean-Louis Duval ◽  
Nicolas Zerbib ◽  
Elias Cueto ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Order Reduction ◽  
Synchronous Machines ◽  
Magnetic Vector Potential ◽  
Separated Representations ◽  
Recent Developments ◽  
Separated Representation ◽  
Series Of Functions

A novel Model Order Reduction (MOR) technique is developed to compute high-dimensional parametric solutions for electromagnetic fields in synchronous machines. Specifically, the intrusive version of the Proper Generalized Decomposition (PGD) is employed to simulate a Permanent-Magnet Synchronous Motor (PMSM). The result is a virtual chart allowing real-time evaluation of the magnetic vector potential as a function of the operation point of the motor, or even as a function of constructive parameters, such as the remanent flux in permanent magnets. Currently, these solutions are highly demanded by the industry, especially with the recent developments in the Electric Vehicle (EV). In this framework, standard discretization techniques require highly time-consuming simulations when analyzing, for instance, the noise and vibration in electric motors. The proposed approach is able to construct a virtual chart within a few minutes of off-line simulation, thanks to the use of a fully separated representation in which the solution is written from a series of functions of the space and parameters coordinates, with full space separation made possible by the use of an adapted geometrical mapping. Finally, excellent performances are reported when comparing the reduced-order model with the more standard and computationally costly Finite Element solutions.

Separated Representations of Incremental Elastoplastic Simulations

2015 ◽  
Vol 651-653 ◽  
pp. 1285-1293 ◽  
Author(s):  
Mohamed Aziz Nasri ◽  
Jose Vicente Aguado ◽  
Amine Ammar ◽  
Elias Cueto ◽  
Francisco Chinesta ◽  
...  
Keyword(s):  
Model Order Reduction ◽  
Mechanical Systems ◽  
Order Reduction ◽  
Fast Simulation ◽  
Reduced Basis ◽  
Model Order ◽  
Reduction Techniques ◽  
Separated Representations ◽  
Separated Representation

Forming processes usually involve irreversible plastic transformations. The calculation in that case becomes cumbersome when large parts and processes are considered. Recently Model Order Reduction techniques opened new perspectives for an accurate and fast simulation of mechanical systems, however nonlinear history-dependent behaviors remain still today challenging scenarios for the application of these techniques. In this work we are proposing a quite simple non intrusive strategy able to address such behaviors by coupling a separated representation with a POD-based reduced basis within an incremental elastoplastic formulation.

scholarly journals Research on the Non-Magnetic Conductor of a PMSM Based on the Principle of Variable Exciting Magnetic Reluctance

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 318
Author(s):  
Chunyan Li ◽  
Fei Guo ◽  
Baoquan Kou ◽  
Tao Meng
Keyword(s):  
Permanent Magnet ◽  
Electromagnetic Force ◽  
Electromotive Force ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Magnetic Conductor ◽  
Critical Speeds ◽  
Motor Structure ◽  
Test Result

A permanent magnet synchronous motor (PMSM) based on the principle of variable exciting magnetic reluctance (VMRPMSM) is presented. The motor is equipped with symmetrical non-magnetic conductors on both sides of the tangential magnetized permanent magnets (PMs). By placing the non-magnetic conductor (NMC), the magnetic reluctance in the exciting circuit is adjusted, and the flux weakening (FW) of the motor is realized. Hence, the NMC is studied comprehensively. On the basis of introducing the motor structure, the FW principle of this PMSM is described. The shape of the NMC is determined by analyzing and calculating the electromagnetic force (EF) acting on the PMs. We calculate the magnetic reluctance of the NMC and research on the effects of the NMC on electromagnetic force, d-axis and q-axis inductance and FW performance. The critical speeds from the test of the no-load back electromotive force (EMF) verify the correctness of the NMC design. The analysis is corresponding to the test result which lays the foundation of design for this kind of new PMSM.

Demagnetization Analysis of Additional Permanent Magnets in Salient-Pole Synchronous Machines With Damper Bars Under Sudden Short Circuits

2012 ◽  
Vol 59 (6) ◽  
pp. 2448-2456 ◽  
Author(s):  
Tatsuya Hosoi ◽  
Hiroya Watanabe ◽  
Kazuo Shima ◽  
Tadashi Fukami ◽  
Ryoichi Hanaoka ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
Synchronous Machines ◽  
Salient Pole ◽  
Short Circuits

Transpermanent Magnetics Using Alternating Uniform Linear Stacks

2004 ◽  
Vol 127 (4) ◽  
pp. 679-687
Author(s):  
Larry Silverberg ◽  
Luis Duval
Keyword(s):  
Low Power ◽  
Permanent Magnets ◽  
Traditional Approach ◽  
Reducing Power ◽  
Ultra Low Power ◽  
Flow Rates ◽  
Recent Developments ◽  
Valve Control ◽  
Design And Testing ◽  
Laboratory Prototype

In this paper we apply recent developments in transpermanent magnetics to the problem of ultra-low-power valve control. Whereas the traditional approach to ultra-low-power valve control is based on latching mechanisms that turn off valves during inactive periods, in this paper we describe an approach that eliminates the need for latching mechanisms. Instead of latching mechanisms, the principles of transpermanent magnetics are employed to switch the states of permanent magnets; the use of permanent magnets instead of electromagnets eliminates power loads during inactive periods, thereby reducing power consumption to ultralow levels. The permanent magnets in a transpermanent magnet valve are configured in a stack. The relationships between the strength and number of permanent magnets in the stack and the stroke and resolution of the valve are developed. In this paper we show that the alternating uniform linear stack is well suited for digital process valves having a small number of states. Then in the paper we report on the design and testing of a laboratory prototype valve that uses an alternating uniform linear stack. The prototype valve had five states yielding a range of flow rates between 0 and 1.58m∕s with a resolution of 0.3m∕s. In this paper we find that transpermanent valves represent a promising valve technology for digital process valves.

scholarly journals Modal Analysis and Rotor-Dynamics of an Interior Permanent Magnet Synchronous Motor: An Experimental and Theoretical Study

2020 ◽  
Vol 10 (17) ◽  
pp. 5881
Author(s):  
Selma Čorović ◽  
Damijan Miljavec
Keyword(s):  
Modal Analysis ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Natural Frequencies ◽  
Permanent Magnet Synchronous Motor ◽  
Mechanical Vibration ◽  
Mechanical Vibrations ◽  
Wide Range ◽  
Interior Permanent Magnet ◽  
Interior Permanent Magnets

This paper investigates mechanical vibrations of an interior permanent magnet (IPM) synchronous electrical motor designed for a wide range of speeds by virtue of the modal and rotordynamic theory. Mechanical vibrations of the case study IPM motor components were detected and analyzed via numerical, analytical and experimental investigation. First, a finite element-based model of the stator assembly including windings was set up and validated with experimental and analytical results. Second, the influence of the presence of the motor housing on the natural frequencies of the stator and windings was investigated by virtue of numerical modal analysis. The experimental and numerical modal analyses were further carried out on the IPM rotor configuration. The results show that the natural frequencies of the IPM rotor increase due to the presence of the magnets. Finally, detailed numerical rotordynamic analysis was performed in order to investigate the most critical speeds of the IPM rotor with bearings. Based on the obtained results, the key parameters related to mechanical vibrations response phenomena, which are important when designing electrical motors with interior permanent magnets, are provided. The main findings reported here can be used for experimental and theoretical mechanical vibration analysis of other types of rotating electrical machines.

scholarly journals Permanent Magnets Aging in Variable Flux Permanent Magnet Synchronous Machines

2020 ◽  
Vol 56 (3) ◽  
pp. 2462-2471
Author(s):  
Daniel Fernandez ◽  
Maria Martinez ◽  
David Reigosa ◽  
Juan M. Guerrero ◽  
Carlos Manuel Suarez Alvarez ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnets ◽  
Synchronous Machines ◽  
Permanent Magnet Synchronous Machines ◽  
Variable Flux

scholarly journals Estimation of Rotor Temperature of Permanent Magnet Synchronous Motor Based on Model Reference Fuzzy Adaptive Control

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Hongchang Ding ◽  
Xiaobin Gong ◽  
Yuchun Gong
Keyword(s):  
Adaptive Control ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Estimation Method ◽  
Synchronous Motor ◽  
Flux Linkage ◽  
Fuzzy Adaptive Control ◽  
Model Reference ◽  
Fuzzy Adaptive

For high-speed permanent magnet synchronous motor (PMSM), its efficiency is significantly affected by the performance of permanent magnets (PMs), and the phenomenon of demagnetization will occur with the increase of PM temperature. So, the temperature detection of PMs in rotor is very necessary for the safe operation of PMSM, and direct detection is difficult due to the rotation of rotor. Based on the relationship between permanent magnet flux linkage and its temperature, in this paper, a new temperature estimation method using model reference fuzzy adaptive control (MRFAC) is proposed to estimate PM temperature. In this method, the model reference adaptive system (MRAS) is built to estimate the permanent magnet flux linkage, and the fuzzy control method is introduced into MRAS, which is used to improve the accuracy and applicable speed range of parameters estimated by MRAS. Different permanent magnet flux linkages are estimated in MRFAC based on the variation of stator resistance, which corresponds to different working temperatures measured by thermal resistance, and the PM temperature will be obtained according to the estimated permanent magnet flux linkage. At last, the back electromotive force (BEMF) is measured on the experimental motor, and the flux linkage and PM temperature of the experimental motor are deduced according to the BEMF. Compared with the experimental results, the estimated PM temperature is very close to the actual test value, and the error is less than 5%, which verifies that the proposed method is suitable for the estimation of PM temperature.

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