<div class="section abstract"><div class="htmlview paragraph">Thermal management system of electric vehicles (EVs) is critical for the vehicle's safety and stability. While maintaining components within their optimal temperature ranges, it also essential to reduce energy consumption thermal system. Firstly, a kind architecture integrated (ITMS) proposed, which can operate in multiple modes meet various demands. Two typical operating vehicle cooling summer heating winter, utilizes...

A max-log-MAP soft demapping algorithm with logarithmic complexity is proposed for M-PAM signals. Its only Θ(logM) signals, in contrast to Θ(MlogM) as achieved by the conventional using exhaustive search. The applies both Gray-coded and natural-coded may be straightforwardly extended rectangular QAM signals when signal can decomposed into two independent PAM

A facile and ultrasensitive fluorometric assay for trypsin detection was successfully established on the basis of SDS/protamine/fluorescent hydrophobic dye micellar-type assemblies enzyme-triggered disassembly.

The paper proposes a content-based video retrieval system designed using MPEG-7 (multimedia content description interface), which provides standard for video. consists of three parts: shot boundary detection, feature extraction and similarity measurement. In cut dissolve can be detected the histogram difference skipping image difference, respectively. part, two visual descriptors, Color Structure Descriptor (CSD) Edge Histogram (EHD), are used to represent color edge key frames. Lastly,...

This paper introduces a variable structure to regulate speed of PMSM system by global fast terminal sliding mode control (GFTSMC) technique optimizing tracking performance permanent magnet synchronous motor (PMSM) servo system. Firstly, strategy is introduced. Compared with common strategy, this eliminates the chattering phenomenon in that it does not contain switching terms. Also, can make output reach reference value finite time, along shorter convergence time and better precision. Due...

By choosing the density of particle as design variables, a new implementation method topology optimization is presented based on Element-free Galerkin (EFG) in this paper, which optimal objective to minimize structural compliance. The advantage using nodal that displacement and influence domain have same approximation scheme, smoothness field can be improved. Nodal prevent checkerboard from mathematical model proposed. EFG under multiple loading cases stress constraints proposed, sensitivity...

This paper presents a cost optimal model of electric vehicle taxi systems based on the companies, charging or battery swap stations, passengers’ time, and emission costs. Considering requirement meeting travel demands, an demand using transportation elasticity is formulated to optimize number taxis. The constitutes measure taxis, cruise range, amount other related factors. Simultaneously, meet requirements layout EVSE (electric supply equipment) designed Voronoi polygon method aimed at...

In industrial manufacturing system, there exists an urgent demand for dual-motor drive system running at the same speed. This paper adopts a parallel structure to design dual-permanent magnet synchronous motor (PMSM) with global fast terminal sliding mode control (GFTSMC) technique optimizing speed tracking performance of dual-PMSM servo system. For each PMSM GFTSMC strategy is introduced. Compared common strategy, this avoids chattering phenomenon in that it does not contain switching...

This paper proposes a model-free predictive current control (MFPCC) based on ultra-local model algorithm to the grid-connected, pulse-width modulator driven voltage source converters with LCL filters. Finite Control Set Model Predictive (FCS-MPC) technique can offer superior dynamic response and use of robust performance. Resonant compensation is added in out-loop eliminate steady-state tracking error achieve disturbance rejection. A 3-phase/150V VSR filter experimental platform has been...

Currently, the new round of energy revolution has kicked off, and electric power companies' strategies constructing `smart grid' emerge all over world. As a part smart grid, utilization is expected to play key role in grid. This paper presents novel structural framework domestic system, develops controller which can acquire consumption information at appliance level, proposes load control method based on real-time price. The simulation results indicate that system provide technical means for...

Aiming at the problems of speed overshoot, slow convergence and poor anti-interference in control permanent-magnet synchronous motors (PMSMs) without a position sensor, pulse vibration high-frequency signal injection method for motor with an improved sliding mode was designed. Firstly, approach rate function is combined non-singular fast terminal surface to design controller (NFTSMC), which used loop improve ability reduce its overshoot. Secondly, order eliminate influence band-pass filter...

To study the life-cycle seismic reliability analysis (SRA) of cable-stayed bridges (CSBs) taking into account chloride-induced corrosion and degradation components, an actual railway CSB with uncertainties in structural geometry material coefficients was employed this investigation, time-dependent models components at different service times were studied. Based on OpenSees batch program, we adapted a mass numerical computation to obtain non-linear response probability density function (PDF)...

ROEWE E50, JAC iev4, ZOYTE 5008EV, and BYD E6 battery electric vehicles are being demonstrated in 25 cities of different scale represented by Shanghai, Shenzhen, Hefei. This article presented four total lifecycle ownership cost model based on urban driving cycles traffic data that three cities. Five scenarios were given about basic, local government subsidy, price decreasing, gasoline increasing, decreasing with increasing an analysis was made vehicles’ market competitiveness during 15 years...

In this study, the modelling methods are compared in terms of their accuracy and simplicity for different types components. And principle equivalent circuit model is obtained from reference used proposed models other equipment HVDC converter stations. Then, all connected into an system, simulations conducted to verify validity model. A comparison with traditional method shows that more effective studying entire stations, also better suited building simulating. Simulation results show acceptable.

Compared with other kinds of electronic instrument transformers, the All Fiber-Optic Current Transformer (FOCT) have advantages high accuracy, wide dynamic range, strong ability to resist electromagnetic interference environment, simple and flexible installation. But because short-time application, operation reliability FOCT can't be assessed base on operational log we now. According this situation, study structure work environment had been done, in order find main parameter which affect...

Security monitoring system of coal mines is indispensable to ensure the safe and efficient production colliery. Due special narrow underground field mine, electromagnetic interference can cause a series misstatements false positives on system, which will severely hamper industry. In this paper, first, frequency characteristics source power line are extracted when equipment runs normally. Then finite difference time domain method introduced analyze effects parameters security signal line. And...

Harmonics in electric power systems can affect the measurement, quality analysis and relay protection of grid, making accurate measurement harmonics a necessity. The broad frequency range electronic transformers makes them suitable for measuring harmonics. requirements accuracy on are put forward standards GB/T 20840.8-2007 IEC60044-8:2002. But because there was no system this China, test haven't been done yet. So voltage transformer's (EVT) had studied found article. Then preliminary...

In this paper, the mixed-integer nonlinear programming model is established for hybrid flow-shop scheduling problem (HFSP), with minimum of energy consumption as objective function. Aiming at characteristic and shortcomings simple genetic algorithm, a algorithm (Memetic) presented. To validate preciseness availability method, simulating experimentation done on three-two-three HFSP, result indicates that can reduce in process production.

Torque is one of the most important control factors for a vehicle's motion. Compared with internal combustion engine, electric motors can have more accurate torque feedback. In vehicles, direct permanent magnet synchronous motor has been studied. However, because non-ideal back EMF phenomenon, brushless DC not widely used. this paper, new method using kriging to calculate in real-time on-line fashion presented. Kriging prediction used approximate based on information from sampled points....

Abstract The combustion process of ventilation air methane (VAM) with in a tangential coal-fired boiler was investigated by the component transport model. influence VAM different volume fractions (CH4) on characteristics analyzed. results indicated that maximum average temperature main area increases to 102 K, increasing fraction CH4 VAM. Under same conditions, distribution oxygen (O2) showed trend decay zone, while carbon monoxide (CO) started increase. Meanwhile, NO emission at overfire...