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This paper describes the experimental study of a synchronous magnetoelectric generator which magnetic system is based on the asynchronous motor: the stator of magnetoelectric generator is made up of induction machine with a number of poles pairs 2p=12, a cylindrical inductor (rotor) is composed of permanent magnets distributed on the rotor surface. The modeling of magnetic system was carried out using...
Recent experimental work has demonstrated nano- textured magnetic Josephson junctions (MJJs) that exhibit tunable spiking behavior with ultra-low training energies in the attojoule range. MJJ devices integrated with standard single-flux-quantum neural systems form a new class of neuromorphic technologies that have spiking energies between attojoules and zeptojoules, operation frequencies up to 100...
The aim of the paper is to calculate the maximum magnetic induction value of the transformer's core which provides a specified value of current distortion. To solve this problem, an experimental study was made on the dependence of the magnetic induction on Total Harmonic Distortion for current. The processing of the measurement results was carried out using Fourier series, harmonic analysis and interpolation...
This article presents a substantial review of nonlinear memristive circuits based on Zdenek BIOLEK model alonside an innovator design developed within the Hewlett-Packard laboratories. HP realized a physical implementation of memristors by placing two layers of titanium dioxide between two electrodes. The first layer is partially doped with oxygen gaps and behaves like a semiconductor and the second...
To solve the problems of rotor flux field orientation loss and operation performance degradation caused by neglecting iron loss in the conventional vector control system, a new vector control strategy based on iron loss model of induction motor (IM) is proposed in this paper. In this strategy, a slip-type indirect field oriented vector control (IFOC) is designed by setting the magnetizing currents...
Indirect rotor field oriented control (IRFOC) plays an important role in the high performance induction machine drives. In the indirect rotor field oriented control — based induction machine adjustable speed control system, the rotor field angle is usually obtained by the rotor angular velocity and the slip angular velocity. The rotor angular velocity can be sensed by an encoder with sufficient accuracy...
Coil system is considered one of the most important subsystems in a Wireless Power Transfer System (WPTS). The maximum efficiency for which a WPTS is designed, only occurs when the coils are perfectly alligned otherwise degradation takes place. At the design level the radius of the coils and wire has impact on the efficiency of the wireless transmission and is the case of consideration of this paper...
This paper proposes three novel dual-stator flux-modulated permanent magnet (DSFMPM) machine concepts, which are particularly suitable for direct-drive applications with the virtue of their high torque density and low operation speed. The dual-stator configuration can help improve the use of inner cavity space, and achieve higher torque density comparing with the single-stator counterparts. Moreover,...
Servo motors are widely used in many industrial applications. These motors require precise control of acceleration, speed, and position. Different designs can be found in the literature. This paper will compare the response of two of the common types and will propose a new servo motor design that uses a smaller amount of magnet, lowering the price of the motor. The proposed motor would be able to...
This paper presents a new investigation of the permanent magnet dimension selection for an AlNiCo based variable-flux machine based on the permanent magnet operating point. To do this, the magnetic features of an AlNiCo permanent magnet material are reviewed and an analytical method to estimate the magnetization level of the permanent magnet at different operation conditions is presented. Moreover,...
Variable magnetization pattern machines (VMPMs) capable of dynamic changes in the magnetization pattern and magnitude are discussed in this paper. These machines can behave like brushless DC machines if they have a uniform magnetization pattern. If the magnetization pattern on the permanent magnet is shaped to be sinusoidal through a controlled demagnetizing process, they could behave like brushless...
Variable flux memory (VFM) permanent magnet (PM) machines exhibit an additional degree-of-freedom for control, i.e. PM magnetization state, and thus excellent flux controllability. Moreover, the hybrid PM topologies having variable PM (VPM) with low coercive force and constant PM (CPM) with high coercive force at the same time, are employed to improve the torque density and the flux controllability...
An investigation into magnetic gear modulating ring design shapes and the performance of a magnetic gear integrated into an induction machine are presented. Modulating ring construction is one of the more difficult aspects of magnetic gear design, and a compromise between magnetic performance, losses in conductive supporting parts and manufacturability is often required. Six possible designs for modulating...
This paper presents a detection method of small-foreign-metal particles using a 400 kHz silicon-carbide (SiC)-metal-oxide-semiconductor field-effect-transistors (MOSFETs) high-frequency inverter. A 400 kHz SiC-MOSFETs high-frequency inverter is developed and applied to small-foreign-metal particles detection on high-performance chemical films (HPCFs). A new placement of induction heating (IH) coils,...
The use of direct drive machines in renewable and industrial applications are increasing at a rapid rate. Transverse flux machines (TFM) are ideally suited for direct drive applications due to their high torque density. In this paper, a comprehensive review of the permanent magnet (PM) TFMs for direct drive applications is presented. The paper introduces TFMs and their operating principle and then...
Memory machines (MMs) equipped with low coercive force (LCF) permanent magnet (PM), e.g. AlNiCo and high coercive force (HCF) PM, e.g. NdFeB, possess the advantages of high power density, high efficiency and high efficient flux-regulation capability. In this paper, a robust control strategy to achieve the maximum torque output in different speed region is proposed and implemented on a hybrid permanent...
This paper proposes a novel three-part hybrid rotor design for a permanent magnet synchronous machine (PMSM). The hybrid rotor can be designed to achieve key desired parameters and obtain extended speed operation by combining simple PM and reluctance rotor designs. An additional degree of freedom in the proposed three-part hybrid rotor is the flexibility to align the magnetizing axis of the reluctance...
This paper presents a novel Flux Switching Transverse Flux Machine (FS-TFM) topology. This new topology is well suited to use low cost ferrite magnets in a flux focusing design to achieve high torque density. An electric scooter traction motor featuring the proposed topology is designed using soft magnetic composites through 3D finite element analysis. Design optimization and analysis are conducted...
Uneven distribution of magnetic flux in a conventional magnetic core limits improvement of power density of the magnetic component. By making a magnetic core comprising materials with different permeabilities, henceforth called multi-permeability core, a more uniform flux distribution can be achieved without complex configuration and geometry of the core and winding. In this work, we designed a three-ring...
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