This paper describes the analysis and simulation of an electromechanical hovered system which has a coil wounded in the two legs of the actuator and a circular rotor. For a successful design of ...Active Magnetic Bearing(AMB) system, proper design of actuator is obligatory which controlled all the lifting and hovering force of the process. The magnetic properties of the system fully rely on the coil turns and the actuating current density in the winding. To decide the actuator for the proposed work, magnetic properties are necessary to analyze. In this probed work, inductance for different airgap is analyzed. Magnetic properties such as flux, flux density, magnetic force and field intensity for different airgap between the rotor and actuator are analyzed using ANSYS software base simulating environment. Performance of the magnetic properties with the change in a number of coils turns on the actuator and different current density are investigated for different airgap between the actuator(stator) and the ball rotor.
The use of linear alternators are increasing daily with the usage in hybrid vehicles, Stirling power engines, free piston engines and other renewable energy technologies. Detailed study on the usage ...of radial or axial magnets in the linear alternator has not been performed so far. This paper attempts to study the effects of the radial magnets and axial magnets under the same conditions using ANSYS Maxwell for a tubular linear alternator used in free piston engines. For the study, a linear alternator is designed, modeled and tested with radial and axial magnets. For the sake of comparison, the EMF, flux density, power, efficiency have been evaluated for the axial and radial field machines. Later the results obtained from the simulations were analyzed and studied. It shows that the axial magnets provide more efficiency and output power compared to the radial magnets.
This paper is about a methodology for the optimization of a Permanent Magnet Brushless Direct Current (PM-BLDC) motor. The most advantage of this proposed method is its mathematical modeling ...effectiveness. In specific, it is focused on multi-objective optimization by using a Radial Basis Function (RBF) Neural Network simulated in the Matlab environment. The aim of this optimization process was to maximize the efficiency and to minimize the permanent magnet mass, active mass, and volume of the motor. In order to verify results, two-dimensional models were developed and thoroughly analyzed using Finite Element Analysis (FEA) in Ansys-Maxwell. Moreover, the comparison of the RBFNN and Genetic Algorithm (GA) results were also figured out and the comparison showed that the RBFNN has better ability in finding the optimal solutions and also has less computational time than GA.
Development of the new generation of high power and high frequency power electronic switches along with the need for compact controllable converters for utilization of distributed energy resources in ...the grid, have led to significant developments in the area of solid state transformers in the last years. The design process of a high frequency transformer as the main element in the solid state transformer is illustrated in this article. A multi winding transformer for multiport SST application is designed, studied and built in this research. In a MPSST several windings feed the core. As the result, coupling coefficient between each pair of windings, become an important factor which is studied in this study. Since the transformer is designed for high frequency applications, the power loss in the wire and core of the transformer increases as the result of higher skin effect and eddy current loss in high frequency. Three important factors in the design of HF transformer for MPSST are discussed in the paper. First, four different possible core materials are compared based on their flux density, frequency range, loss and price. Then the cable selection is illustrated and finally, different winding placement and distribution on the same core are suggested and the inductance and coupling coefficient matrices are calculated using ANSYS Maxwell 3D simulation. The transformer is built in the lab and the inductance values matches the expected values from the simulation.
In this article it is considered the electromagnetic torque calculation of low power induction motor with ring windings (IMRW), designed for using in radioactive waste recycling equipment, in ...environments with high levels of radiation and temperatures over 200 degrees by dint of "ANSYS Maxwell". The design of the magnetic stator system has not axis of symmetry and provides layered organization of movement of the stator magnetic field: from linear movement in the stator yoke to the circular movement in the rotor. The magnetic rotor system and its windings are performed by the classical scheme. This paper presents the process of calculating the electromagnetic torque in IMRW with squirrel cage for the number of pole pairs p = 1 and the power P = 2.2 kW. Since the motor has a spatial asymmetry, for the construction of the computational model was used 3D modeling mode.
The article considers the calculations of the induction motor with ring windings (IMRW) and ceramic insulation and a classical induction motor with a squirrel cage. IMRW is the newest design that was ...invented by "Electrical machines" department of UrFU. IMRW and serial induction motor have the same overall dimensions and output power. The electromagnetic calculations are made by "ANSYS Maxwell". Comparative analysis of the serial induction motor parameters with the IMRW parameters clearly shows the possibility for using the second one instead of classical machines in the environment with a high radiation level. Also, the paper highlights the possibility of using "ANSYS Maxwell" for the calculation of electric machines with various designs.
The transport industry is Indonesia's largest consumer of fossil energy. Electric vehicle (EV) is an attempt to decrease the use of fossil fuels. Types of electric motor often used is an induction ...motor. In this paper, the parameter design and performance of squirrel cage induction motor 5 HP for EVs are investigated by changing the voltage system, 48 V for low voltage system and 360 V for high voltage system. The design process is performed using simulation software. With the same design factor, main dimensions of two voltage system designs have same size. The different design located on stator winding and slot. In stator winding, wire gauge diameter and number conductors per slot are different. In stator slot, low voltage system needs a wider slot than the higher voltage system. The performance from ANSYS Maxwell simulation of high-voltage and low-voltage induction motor three-phase frequency 50 Hz output 5 HP for golf cart electric vehicles voltage system does not have a significant difference. The two design have efficiency, power factor, rated torque and slip about 87%, 0.93, 24.5 Nm and 3%.
This paper describes the implementation and functionality of a new analytic-numeric dynamic core loss model for permanent magnet synchronous machines (PMSM). The tool chain is presented and validated ...by experimental results. In contrast to conventional core loss models (according to Steinmetz, Bertotti and Jordan), the presented method uses the stator flux linkage vector - an integral and thus indirectly measurable machine quantity - instead of frequency and flux density as input variable to calculate core losses instantaneously in time domain. Initially, a one-time numerical characterization of the loss distribution in the machine is required which is described subsequently. After completion of the so-called identification routine, which is valid for a wide operating range, only the real state of magnetization - more precisely the stator flux linkage vector - is necessary to calculate core losses instantaneously for any excitation. Experimental investigations underline the significance of transient core loss modeling and prove the functionality of the described approach.
This paper presents a method to design and simulate excitation coil (drive coil) for single-sided magnetic particle imaging (MPI) scanner. Magnetic excitation of the magnetic nanoparticles (MNPs) ...used as the tracer is paramount so that their non-linear magnetization response will be acquired for image reconstruction. Numerical simulation of the magnetic field produced by the excitation coil in the form of solenoid is carried out in Matlab using Biot-Savart law. The results are compared with that of Ansys Maxwell software simulation and experimental results of the excitation coil having the same specifications. The solenoid simulated has 350 turns of copper wire (0.6mm diameter) and 2A excitation current, produces a magnetic field of around 1.49 mT using Matlab, 1.51 mT using Ansys Maxwell and 1.82 mT experimentally, at the surface of the coil. These magnetic fields values are within the excitation range for MPI, hence sufficient for the MNPs excitation from single-sided scanner topology.
The major parameters of transformers used in wireless Power Transfer (WPT) are self inductance, mutual inductance and coefficient of coupling. Due to unique and complex nature of these transformers, ...determining these parameters by calculation has limitations which however can be overcome by use of Finite Element Analysis (FEA). This paper presents and compares the parameters of a circular and rectangular coil transformer modelled under different conditions using Ansys Maxwell software. An introduction to WPT system and its transformer model is also presented.
