This paper describes a small wind generation system where neural network principles are applied for speed estimation and robust control of maximum power extraction against potential drift turbine coefficient curve. The new will deliver electric to customer with light weight, high efficiency, reliability without mechanical sensors. concept has been developed analyzed using directly driven permanent-magnet synchronous generator (PMSG). In addition, the proposed method is 15-kW variable-speed...

This paper presents a novel method to achieve good performance of an extended Kalman filter (EKF) for speed estimation induction motor drive. A real-coded genetic algorithm (GA) is used optimize the noise covariance and weight matrices EKF, thereby ensuring stability accuracy in estimation. Simulation studies on constant V/Hz controller field-oriented (FOC) under various operating conditions demonstrate efficacy proposed method. The experimental system consists prototype...

In the electric vehicle dynamic wireless charging (EVDWC) system, when (EV) drives from one track to next, it will produce output power fluctuation. This article proposes a multicoupling LCC-compensated method for EVDWC system based on an integrated magnetic coupler suppress The includes three couplings. first coupling is between main coils. second adjacent compensation inductor coils into third primary and secondary coil. are unipolar in double D structure. parameter matching rules...

This article proposes a magnetic integrated method for the coupler of electric vehicle dynamic wireless charging system to suppress power fluctuation by transforming problem into designing stable equivalent mutual inductance between receiving coil and transmitting coils on road. Both primary-side secondary-side couplers adopt design. The integrates reverse inside coil, in <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LCC</i> resonance...

This paper describes a generalized model of the three-phase induction motor and its computer simulation using MATLAB/SIMULINK. Constructional details various sub-models for are given their implementation in SIMULINK is outlined. Direct-online starting 7.5-kW studied developed.

A genetic algorithm is applied to optimize a pulsewidth modulation (PWM) inverter, which cannot only spread harmonic energy but also reduce distortion. Simulation and experimental results verify that the optimized PWM technique superior standard triangular random techniques.

Interval power flow (IPF) is a special kind of uncertain problem whose demand load and active generation are regarded as interval uncertainties. A novel optimizing-scenarios method (OSM) envisaged in this paper to solve obtain more accurate results. The OSM includes two kinds approaches, namely the minimum maximum programming models, which uncertainties variables with varying bounds, objective function under study set determine these unknown variables. By solving nonlinear models through...

SiC devices have the advantages of low conduction resistance and high breakdown voltage,suitable for space application. This paper analyzes development status devices, current research total dose effects ionization single particle abroad. Combining with irrigation in china,the experimental results relevant mechanism analysis effect are presented. The focus was on analyzing damage situation power under radiation environment, providing reference subsequent application

Renewable energy sources are a significant means of addressing dwindling conventional fuels and have been increasingly incorporated in transmission power grids on large scale. However, the uncertainty renewable source outputs threatens voltage security grids, which restricts full integration these to some degree. To address this problem, work employs reactive optimization incorporating interval uncertainties (RPOIU) model for systems. In RPOIU model, state variables, including load voltages,...

Highlights•FGF-21 treatment restored endothelial cell proliferation, migration, and tube-forming ability in vitro, which had been impaired due to hyperglycemia damage.•In both vivo vitro experiments, FGF-21 attenuated the inflammatory response induced by high glucose wounds skin cells.•The wound-healing angiogensis-promoting effects of were comparable those VEGF diabetic wounds.AbstractBackgroundWound healing is a complex biological process that can be individuals with diabetes. Diabetic are...

Compactness and effectiveness are two basic considerations of the inductive power transfer (IPT) system. This article proposes a highly magnetic integrated method <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LCC</i> -compensated IPT system in which coupling coils into coupler to improve misalignment tolerance realize design zero-voltage switching (ZVS) condition. The primary-side integrates double-layer reverse coil an inductor resonant...

This paper describes a generalized simulation model of the three-phase induction motor using SIMULINK software package MATLAB. The is based on two-axis theory revolving frame transformation. takes power source and load torque as inputs gives speed electromagnetic outputs. Internal resistance supply magnetic saturation may also be accounted for.

This paper presents an artificial-neural-network-based direct-self-control (ANN-DSC) scheme for input inverter-fed three-phase induction motor. In order to cope with the complex calculations required in direct self control (DSC), proposed artificial-neural-network (ANN) system employs individual training strategy fixed-weight and supervised models. A computer simulation program is developed using Matlab/Simulink together Neural Network Toolbox. The simulated results obtained demonstrate...

This paper presents a detailed study of the extended Kalman filter (EKF) far estimating rotor speed an induction motor drive. The general structure is reviewed and various system vectors matrices are defined. By including as state variable, EKF equations established from discrete two-axis model three-phase motor. Using software MATLAB/Simulink, simulation estimation algorithm carried out for drive with constant V/Hz frequency control direct self control. investigations show that capable...

This work presents a novel control strategy of turbine directly driven permanent magnet synchronous generator (PMSG) for small wind generation system. Compared to the traditional techniques, this new method has following advantages: 1) proposed neural networks provides fast and accurate estimation actual velocity without anemometer; 2) maximum mechanical power can be well tracked at both dynamic steady states. The are trained offline by Matlab software algorithms then will implemented DSP...

This paper proposes an optimized random PWM method for voltage-controlled inverters. The can achieve minimum total harmonics (THD) value in every cycle of the output frequency, while traditional techniques, instantaneous per are various with function changes. Therefore, proposed is especially beneficial to reduce effect such as acoustic noise and harmonic loss. Simulation results verify that voltage using technique superior based on standard triangular conventional methods. A real-valued...

To make the pickup coil and its compensation network more compact efficient, an integration method is proposed to traditional bulky inductance integrated into center of in a form planar coil. The mutual inductances among primary coil, are investigated with finite element analysis method. Then equivalent circuit analyzed power transfer characteristics system further investigated. It has been shown that influence can be ignored keeps constant current load current. Finally, 10kW prototype built...

Within the context of delegating separation related tasks from an air traffic controller to flight deck, this paper analyzes merging and spacing problem for autonomous aircraft operations at busy airway intersections. A consensus-based control protocol is developed achieve ordered safe flow a given intersection waypoint. Two primary implementation steps are covered in protocol. In first step, consensus on target achieved, where stream modeled as straight line with minimum total converging...

This paper proposes a solenoid magnetic coupler for unmanned aerial vehicles (UAVs) wireless charging, which can significantly reduce leakage flux interference on UAV equipment. The transmitter is composed of three-phase coils, it mainly generates horizontal while the vertical very weak, resulting in low interference. receiver consists two coils wound at landing gear UAV, compact, lightweight, and conformal. Besides, will not increase additional installation space or wind drag. A rotating...

As the cost of power electronics and control is decreasing, squirrel-cage induction generator with back-to-back converters becoming popular among variable-speed wind turbines. This paper describes a complete simulation study VSWT (variable-speed turbine) system based on generator. It includes modeling turbine, generator, double-sided PWM converter real reactive control. The validity are verified by real-time turbine generation test bed.

The Stacker Crane Problem (SCP) is a variant of the Traveling Salesman Problem. In SCP, pairs pickup and delivery points are designated on graph, crane must visit these to move objects from each location its respective point. goal minimize total distance traveled. SCP known be NP-hard, even tree structures. only positive results, in terms polynomial-time solvability, apply graphs that topologically equivalent path or cycle. We propose an algorithm optimal for fixed topology, running...