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The paper presents the analysis of the performances of an Outer Rotor Synchronous Reluctance Machine as potential candidate for direct-driven low speed industrial application. The influence of slot/pole combination, as well as the number of flux-barriers was investigated in order to arrive to a topology suitable for the targeted application. The proposed machine has the highest average torque and...
Finite element method is a powerful tool in analysis of electrical machines; however, the computational cost is high depending on the geometry of analyzed machine. In synchronous reluctance machines with transversally laminated rotors, the anisotropy of magnetic circuit is provided by flux barriers which can be of various shapes. Flux barriers of shape based on Zhukovski’s curves seem to provide very...
This paper brings into attention two types of rare earth-less electrical machines designed to be used for an automotive cooling fan (CF) application. A low-power induction machine and a variable reluctance synchronous machine will be analyzed based on the requirements of a 48V/850W CF. Specific design issues requiring attention when designing these two motors for such an applications will be pointed...
The combination of Battery-Ultracapacitor, as a Hybrid Energy Storage System (HESS) controlled with a bidirectional buck-boost converter for light electric vehicles is presented in this paper. By combining these two energy storage elements an efficient supply system can be obtained. A bidirectional Buck-Boost converter is used to control the energy transfer between the elements of the HESS and the...
The paper describes step by step the process of constructing and testing real-time tool for analysis of a bidirectional Buck-Boost converter supplying a Permanent Magnet Synchronous Machine (PMSM), as a traction motor for light electric vehicles. This converter was developed to be used as a controlled energy transfer equipment between the main energy source of a battery and an auxiliary ultracapacitor...
This paper presents a rapid control prototyping technique for a speed controlled Switched Reluctance Machine. The control is developed in LabVIEW FPGA and runs on an R-series board by National Instruments equipped with a Kintex-7 FPGA chip. The control is designed and simulated in real-time using look-up tables, with data provided by finite element method simulations and mathematical equations describing...
The paper details an advanced analysis of a Permanent Magnet Synchronous Machine, as traction motor for light electric vehicles. The focus of the paper is to create a real-time model in the loop (RTMiL) simulator based on Field Programmable Gate Array (FPGA). By this, the gap between the simulated models and the behavior of the real machine and its converter is diminished. The machine with its electronic...
The present paper describes a CAD platform that combines analytical design, numerical electromagnetic and vibro-acoustic analysis of Permanent Magnet Synchronous Machines for automotive drives systems with a large range of rated power. For dynamic validation and transient behavior two control strategy were taken in consideration (speed and torque control).
In this paper, a simplified high frequency model of the Permanent Magnet Synchronous Motor (PMSM) as well as the motor drive were developed and analyzed using Simulink. The currents in the normal and common mode paths were extracted and compared with the analytical results. A Finite Element Analysis (FEA) was performed on two PMSM with different topologies in order to obtain the radial forces on the...
This paper is focused on multi-physics (structural and electromagnetic) analysis of synchronous reluctance machine (SynRM). Rotor's construction of SynRM is designed to provide the best electromagnetic behavior of the machine. The number and shapes of flux barriers are chosen in order to maximize the machine's saliency ratio. However, at high rotational speeds due to high stress in the bridges, the...
This paper presents a perspective regarding the design concepts of a small induction machine used for electrical steering systems. The particularity of this view is given by the fact that besides the output imposed parameters the geometrical dimensions are subject to major constraints. In these conditions there are some theoretical aspects that limit from the start the design choices that can be made...
The present paper details the analysis of a custom designed synchronous reluctance machine used for light electric vehicles. Firstly, the paper details the design of the machine using dedicated software, followed by an iterative optimization process using a coupling of FEM software with Matlab code. In order to analyze the performance of the machine, dedicated control strategies need to be implemented...
The paper approaches the high-frequency equivalent circuit of permanent magnet synchronous machines (PMSM) with different pole number, and its response to PWM-based supplying current. The model is implemented in MATLAB-Simulink, and the phase currents, as well as the common and normal mode currents are analyzed.
In this paper a model-based design and testing method focusing on the electric vehicle driveability aspect is proposed. The design approach is divided into two steps. The first step is the Model-in-the-Loop co-simulation coupling a vector-controlled electric drive modelled in MATLAB/Simulink to a planar forward-facing electric vehicle LMS Imagine. Lab Amesim model. The second step represents a mechanical-level...
The paper present the analysis of the performances of an electrical machine used for electric traction in automotive application. The electrical machine under study in this paper is a flux synchronous reluctance machine (SynRM) with 4 poles and 27 slots. The study design requires some analytical analysis in SPEED program, followed by a numerical one in order to obtain the performances of the proposed...
Finite element method (FEM) is a powerful tool in analysis of electrical machines however, the computational cost is high depending on the geometry of analyzed machine. In synchronous reluctance machines (SyRM) with transversally laminated rotors, the anisotropy of magnetic circuit is provided by flux barriers which can be of various shapes. Flux barriers of shape based on Zhukovski's curves seem...
This paper presents an overview and the results of a Field Programmable Gate Array (FPGA) based real-time simulation of a Switched Reluctance Motor (SRM) drive system, designed for light EV applications. The analysis is ran on a Kintex-7 FPGA using an R series board from National Instruments. The real time simulation model is designed in LabVIEW FPGA and uploaded on the R series board to perform accurate...
This paper details on an advanced analysis of a Variable Reluctance Machine, designed to be used for light electric vehicle propulsion. The goal is to setup a Field Programmable Gate Array (FPGA) based Processor-in-the-Loop simulation test bench for the proposed machine, in such way, that emulates the real machine and control unit as close as possible. Hence, two FPGAs are used, one running the Field...
Cost reduction of any design process is always of interest for industries. Simulation work packages tackle this problem since they can quickly provide reliable results that permit detection of critical design issues prior to the prototype phase. A trade-off is then often made between model accuracy and computation speed. In the particular case of electric machines, homogenization techniques are used...
This paper is devoted to the fast modelling of Switched Reluctance Machines (SRMs) and Synchronous Reluctance Machines (SynRMs) by Magnetic Equivalent Circuit (MEC) approach. For SRMs, a combined MEC-FE model is presented. A table of reluctance as function of flux and rotor position is obtained from a reduced FE model which contains a part of the stator and rotor pole. For SynRMs, two separate MEC...
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