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Clustering is a well-recognized data mining technique which enables the determination of underlying patterns in datasets. In electric power systems, it has been traditionally utilized for different purposes like defining customer load profiles, tariff designs and improving load forecasting. Some surveys summarized different clustering techniques which were traditionally used for customer segmentation...
The modal analysis plays an important role in analyzing the vibration and noise of the motors. The models of the stator which are based on the interior permanent magnet synchronous motors (IPMSM) by the 3D finite element software are analyzed. Firstly, it is significant to simplify the stator rind by considering the different components. Then the relationships of the different parameters of the stator...
Contactless transformer is the key part of the inductive contactless power transfer (ICPT) system. In this paper, a high coupling coefficient contactless transformer is proposed with asymmetric trapezoidal shape cores. With 3D finite element methods (FEM), this paper calculated coupling coefficients of the transformer in different inner lateral side distances and bending angles of the magnetic core...
A novel linear actuator for a tactile display is proposed, especially for Braille aimed for visually impaired people, and also for a new human haptics interface. The features of actuators for this use may be evaluated by output force, stroke, compactness, and so on. The proposed new actuator has better performance in terms of stroke, compactness, and output force compared with existing actuators....
This research analyzes two stator design features as structural solutions to reduce noise and vibration in permanent magnet synchronous machines (PMSM). The study was focused on a surface mounted PMSM with 12-stator slots and 10-rotor poles where vibration is a well-known issue. The structural-harmonic analysis was used to quantify the vibration by analyzing the radial deformation and acceleration...
Linear flux switching motor with segmented secondary (LFSMSS) is characterized by two kinds of windings, i.e. the DC field windings and AC armature windings, which are distributed alternately on the mover. LFSMSS is vulnerable to large force ripple. This paper investigates the influence of two design techniques (dummy slot and auxiliary tooth) on the force ripple of LFSMSS. In addition, the simulation...
In this paper, a phenomenological 3D hysteresis model using magnetic dipoles, which are mechanically supported on a 3-dimensional grid, is investigated. The different interactions between these dipoles are based on the equations of micromagnetism. Instead of minimizing the free energy in the system by mathematical optimization methods, each elementary dipole is able to rotate into an individual energetically...
Calculation and matching of the main parameters of a brushless DC (BLDC) motor for a Battery electric vehicle (EV) is studied in this paper. Usually, different shapes of permanent magnet (PM) and different magnetizing methods will affect the performance of the motor. Especially when the motor is designed for an EV, more elements need to be considered, such as efficiency under normal operating conditions...
The amorphous alloy transformer has less no-load current and loss, but the structure characteristics of the runway shape winding make it show greater vibration intensity and noise at the load condition. Based on the structure characteristics of the amorphous alloy transformer with runway shape winding, a leakage-stress-acoustic coupled calculation model is proposed to calculate the electromagnetic...
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