A magnetically geared machine (MGM) integrates a magnetic gear with low-torque, high-speed electric to create single compact high-torque, low-speed device the size advantages of mechanically system and reliability direct drive machine. This work investigates use MGMs for wave energy conversion through development large-scale decoupled inner stator radial flux generator rated 10 kW at an input speed 30 r/min. Critical design trends are illustrated using parametric two-dimensional...

Graph neural networks (GNNs) have achieved great success in many graph-based applications. However, the enormous size and high sparsity level of graphs hinder their applications under industrial scenarios. Although some scalable GNNs are proposed for large-scale graphs, they adopt a fixed $K$-hop neighborhood each node, thus facing over-smoothing issue when adopting large propagation depths nodes within sparse regions. To tackle above issue, we propose new GNN architecture -- Attention...

Cogging torque in flux-switching permanent-magnet (FSPM) machines is relatively high compared with that of other types PM because their unique doubly salient structure. Reducing the cogging FSPM machine particular importance to make it a viable alternative conventional rotor-PM machines. A new pole shaping method has been proposed reduce torque. The validity confirmed by analytical methods and finite-element-analysis-based simulation. influence on back-electromotive force (EMF) average...

The rapid development of wireless power transfer technology brings forth innovative vehicle energy solutions and breakthroughs utilizing sensor networks (WSNs). In most existing schemes, rechargeable (WRSNs) are generally equipped with one or more charging vehicles (vehicles) to serve nodes (SNs). These schemes solve the issue some extent; however, due off-road speed limitations vehicles, SNs still cannot be charged in time, negatively affecting lifetime networks. Our work proposes a new...

Graph neural networks (GNNs) have achieved state-of-the-art performance in various graph-based tasks. However, as mainstream GNNs are designed based on the message passing mechanism, they do not scale well to data size and steps. Although there has been an emerging interest design of scalable GNNs, current researches focus specific GNN design, rather than general space, limiting discovery potential models. This paper proposes PaSca, a new paradigm system that offers principled approach...

The objective of this study was to evaluate the effects pre-exercise L-citrulline supplementation on athletic performance Yili speed-racing horses during a high-intensity exercise. On 20th day experiment, blood samples were collected at 3 h and 6 post-supplementation measure amino acid polyamine concentrations. 38th participated in 2000 m speed race, three distinct gathered for assessing gases, hematological parameters, plasma biochemistry, antioxidant NO results indicate that group showed...

The complexity of the permanent magnet (PM) machine structure makes optimal design PM always a difficult task. multiple objectives an make most classic optimization algorithms inapplicable, due to nonlinearity and some discontinous variables. In this paper, two interior (IPM) practices with modular stator conventional are discussed. process is directly coupled finite-element analysis (FEA) guidelines embedded in process. Multivariable methods based on Monte Carlo differential evolution...

Recent works reveal that feature or label smoothing lies at the core of Graph Neural Networks (GNNs). Concretely, they show combined with simple linear regression achieves comparable performance carefully designed GNNs, and a MLP model its prediction can outperform vanilla GCN. Though an interesting finding, has not been well understood, especially regarding how to control extent smoothness. Intuitively, too small large iterations may cause under-smoothing over-smoothing lead sub-optimal...

The fluctuation in solar photovoltaic (PV) generation system causes inefficiency PV power management. Thus, predicting is essential to assist improving the overall performance of a plant operation. In this paper, forecasting model with multiple Gated Recurrent Unit (GRU) networks proposed effectively improve prediction accuracy and training time compared typical GRU network. addition, other popular machine learning algorithms, namely Feed-forward Artificial Neural Network (ANN), Support...

Network traffic generation is very important for testing network equipment, services, and security products. The paper firstly introduces the significance classification of generation. Then, chronologically categorizes research activities into three different methods: 1) based on model; 2) characteristics; 3) application protocol. Thorough reviews major achievements each kinds are conducted. Finally, identifies some open issue points out possible future directions in area.

For both charging and discharging series-connected batteries, charge equalization is necessary in order not to influence battery cycle life. This paper proposes a bi-directional circuit for batteries. In addition balance discharging, this can improve the output voltage regulation resist reduction when SOC (state of charge) low. A DSP processor adopted perform control tasks. Experiments were implemented verify feasibility circuit.

The fast advancement of Wireless Sensor Network (WSN) technologies has initiated different perspectives for applications from traditional wireless networks and wire networks. For example, they can be set up in indoor environments which integrate varieties sensors with network capabilities to provide environment monitoring or personnel location monitoring. Zig Bee is a commonly used transmission technology positioning. However, the accuracy positioning usually far satisfactory due strength...

A magnetically geared machine (MGM) integrates a magnetic gear with low torque, high speed electric to create single compact device the size advantages of mechanically system and reliability direct drive machine. This work investigates use MGMs for wave energy conversion through development large scale decoupled inner stator radial flux generator rated 10 kW at an input 30 rpm. Critical design trends are illustrated using parametric 2D 3D finite element simulation results. Information is...

This article presents power conversion and control of a novel low-speed radial-flux magnetically-geared permanent magnet generator (MGPMG) for wave energy conversion. The designed developed by ABB Corporate Research has magnetic-gear integrated into the structure, which amplifies low speed converter (WEC) to high rotor facing stator windings. is with large number poles concentrated windings simpler cost-effective design. However, due windings, induced voltage contains significant percentage...

Network motif is a kind of frequently occurring subgraph that reflects local topology in graphs. Although network has been studied graph analytics, e.g., social and biological network, it yet unclear whether useful for analyzing online transaction generated applications such as instant messaging e-commerce. In this work, we analyze networks from the perspective motif. We define vertex features based on size-2 size-3 motifs, introduce motif-based centrality measurements. further design...

With the improvement of soft magnetic composite (SMC) material, electric machine design is no longer limited to traditional iron lamination technology. The single extrusion fabrication process SMC material simplifies construction armature core. Moreover, isotropic property can be exploited for various structure design, compared with 2D flux distribution typical laminations. In this paper, a drive system based on novel multi phase modular permanent magnet proposed. concentric winding stator...

Modular permanent magnet machines are gaining popularity due to their simple stator construction and machine winding fabrication. In this paper, a multiphase modular is proposed obtain robust drive system with the feature of fault tolerant capability. By making use concentric on each module, structure simplified benefit less end loss, which also offers operation standard half-bridge control or even independent phase control. investigation, PM tooth pole ratio close unity design based soft...

Wireless sensor nodes are commonly deployed in outdoor or hazardous environments. Due to limited resources and power consumption required perform tasks, these may experience shortages thus lead the disconnection of whole wireless network. To prolong lifetime network, new technologies developed wirelessly recharge via mobile machines. Previous works have considered applying charging elevate network without defining performance optimization. In addition, effect speed machines, chargingspeed,...

Modular permanent magnet machines are gaining popularity for their ease in assembling the stator pieces and phase windings. In this paper, a multiphase modular machine with corresponding drive topology is proposed as high performance system. The modules fabricated by soft magnetic composite (SMC) material, which benefits large scale fabrications one punch fabrication process modules. Moreover, its isotropic material property can be exploited various structure design compared 2D flux...

Cogging torque in flux-switching permanent magnet machines (FSPMs) is relatively high compared with other types of PM because their unique doubly salient structure. Reducing the cogging FSPM machine particular importance to make it a viable alternative conventional rotor-PM machines. A new pole shaping method has been proposed reduce torque. The validity confirmed by analytical methods and finite element analysis based simulation. influence on back-EMF average electromagnetic have also investigated.

Due to the fast advancement of network technologies, study service-oriented architectures (SOA) has attracted much attention recently, taking advantage benefits distributed computing and integration. Web service is a very popular widely accepted implementation SOA. The use services holds advantages loosely-coupled system where all components can be developed at independent platforms connected with protocols via network. However, tendency for methods applying over getting more complex. Many...

The orthogonal variable-spreading-factor (OVSF)-CDMA systems can support multimedia applications with different bandwidth requirements. Code management schemes, including code placement and replacement, significantly impact the utilization of system. Many researches have studied these two closely related problems are solving them independently. For optimality concerns minimization reassignment number. There is no definition about yet. We formally define for schemes presented a novel graph...

Most small induction motors in current use employ concentric windings which have equal numbers of turns per coil. An optimal choice can achieve better distribution MMF the gap while keeping each slot essentially same. In this paper, air magnetic motive force (MMF) harmonics electrical machine created by stator with sinusoidal injection are investigated. The is modeled ideally a linear winding function, simplifies expression significantly neglecting effects and saturation for uniform air-gap...