The permanent magnet of brushless DC (BLDC) motor is ideally suited for high-speed application due to its superior performance and efficient as compared to other types of electrical motors. However, ...to operate in high-speed operation, the rotors that hold the magnet must be able to withstand high centrifugal force. Due to that, the main objective of this project is to design and develop the suitable rotor for high-speed BLDC motor through the finite element method (FEM) Ansys Maxwell modeling software. In addition, this project is also carried out to determine the ability of the modeled software to reach the high-speed performances in terms of cogging torque and induce voltage. In this project, the selected BLDC motor was fabricated and measured experimentally. The result showed that the designed rotor can achieve speed of almost 14,500 rpm.
The paper describes commissioning of the inductive heater based on numerical simulation of inductive heating in the hypervapotron sample and test channel. The HEFEL loop is being developed to ...research a high heat flux cooling channels applicable in fusion devices. The Box Scraper hypervapotron channel geometry represents a primary focus of research. Conditions in the first wall of tokamak are simulated by induction heating of the tested hypervapotron channel. The exact heat flux of tested sample is difficult to measure, thus the numerical simulation of induction heating and thermohydraulic model of the cooling channel are an important part of HEFEL loop commissioning. ANSYS Maxwell 3D and ANSYS Fluent coupling is used for optimalization of the induction heating to achieve the highest heat fluxes using selected induction heating source.
Recently, most transportation systems have used an integrated electrical machine in their traction scheme, resulting in a hybrid electrified vehicle. As a result, an energy source is required to ...provide the necessary electric power to this traction portion. However, this cannot be efficient without a reliable recharging method and a practical solution. This study discusses the wireless recharge solutions and tests the system’s effectiveness under various external and internal conditions. Moreover, the Maxwell tool is used in this research to provide a complete examination of the coils’ position, size, number, and magnetic flux evolution when the coils are translated. In addition, the mutual inductance for each of these positions is computed to determine the ideal conditions for employing the wireless recharge tool for every charging application. A thorough mathematical analysis is also presented, and the findings clearly demonstrate the relationship between the magnet flux and the various external conditions employed in this investigation.
With the rapid growth of the electric vehicles (EVs) market all over the world, wireless power transfer (WPT), as an emerging way of charging batteries, has drawn the attention of researchers, ...manufactures, and customers recently. Various magnetic coupler configurations, which are essential in WPT systems, have been proposed and analyzed. However, the misalignment tolerances of the existing magnetic couplers are pretty small, which results in a remarkable decrease in the transmission power and efficiency when there is misalignment between two coupling coils. In order to solve this problem, novel quadrature coils and a converting circuit are proposed, which could adjust the coupler structure according to the relative position of the coils on both sides so that the transmission power and efficiency are optimal. The structure of quadrature coils is first optimized with a three-dimensional finite element analysis (3-D FEA) tool ANSYS MAXWELL. On the basis of the optimized parameters, a 3.5 kW WPT experiment platform is constructed. When the horizontal misalignment reaches 150 mm, the input and output power is 2.256 kW and 2.126 kW respectively, thus an efficiency of 94.22% is achieved. The experimental results verify the correctness of the theoretical analysis.
This paper presents a developed method to connect the terminals of low voltage (LV) and high voltage (HV) windings of any given vector group connection. This method is validated by modeling different ...types of vector groups of three-phase transformers using three-dimensional ANSYS Maxwell. Also, it is based on drawing transformer vector group connection on clock showing phase displacement. For a given transformer vector group connection, the connection between the terminals of LV and HV windings can be deduced by using this method. Different connections of high and low voltage windings can be simulated using a three-dimensional ANSYS Maxwell based on finite elements method. The three-dimensional model of three-phase transformer indicates the winding direction, which affects transformer vector groups. The paper also describes how winding connection and phase angle between the high line voltage and Low line voltage. The paper’s objective is to understand and apply this method for a given transformer vector group. And, how to model different types of transformer vector groups using three-dimensional ANSYS Maxwell to obtain comparative analysis. The transformer vector groups are very important in the transformer parallel operation.
Electric vehicles (EVs) are one of the most effective means for reducing pollution and promoting sustainable transportation in developing nations. Researchers have been paying close attention to the ...rapid advancement of Wireless power transfer (WPT) technology because it offers a workable solution to the challenges preventing the development of EVs. EV charging uses WPT technology that transmits electricity from the source to the load (battery) using mutual induction and does not require cables or other physical connections. Power pads, misalignment, and compensation topology are technical obstacles to EV wireless charging. In this manuscript, mathematical calculations, simulations, and experimental implementation have been done for the wireless charging of EVs. Ansys Maxwell®3D and MATLAB®/Simulink software are used to simulate various parts of the system. Finite Element Analysis (FEA) using Ansys Maxwell is used to design an existing rectangular power pad. Ansys Maxwell calculates multiple parameters such as self-inductance, mutual inductance, coupling coefficient, and magnetic flux of the transmitting and receiving coils at different misalignment positions. MATLAB®/Simulink has been used to develop a series-series compensation WPT model through which the output power and efficiency of the rectangular power pad at different misalignment positions are estimated. The experimental setup uses a DC power supply, high-frequency (HF) inverter, driver circuits, compensation circuit, MSO, power pad setup, rectifier, and resistive load to verify the simulation results.
A permanent magnet Brushless DC (BLDC) motor has been designed with different rotor configurations based on the arrangement of the permanent magnets. Rotor configurations strongly affect the torque ...and efficiency performance of permanent magnet electric motors. In this paper, different rotor configurations of the permanent magnet BLDC motor with parallel the Halbach array permanent magnet were compared and evaluated. Many applications of electric drives or air-crafts have recently preferred the surface-mounted permanent magnet design due to its ease of construction and maintenance. The finite element technique has been used for the analysis and comparison of different geometry parameters and rotor magnet configurations to improve efficiency and torque performance. A comprehensive design of a three-phase permanent magnet BLDC 35kW motor is presented and simulations were conducted to evaluate its design. The skewing rotor and Halbach magnet array are applied to the permanent surface-mounted magnet on the BLDC motor for eliminating torque ripples. In order to observe the skewing rotor effect, the rotor lamination layers were skewed with different angles and Halbach sinusoidal arrays. The determined skewing angle, the eliminated theoretically cogging torque, and the back electromotive force harmonics were also analyzed.
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