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[IEEE 2018 IEEE 3rd Optoelectronics Global Conference (OGC) - Shenzhen (2018.9.4-2018.9.7)] 2018 IEEE 3rd Optoelectronics Global Conference (OGC) - Cross-Task Dynamic Load Balancing Strategy
摘要： In a multi-computer request application scenario, a certain number of computer resources need to be used to process multiple computer tasks at the same time. However, currently there is no load balancing strategy that can be effectively applied in such scenarios. This paper proposes the cross task load balancing strategy CTLB (Cross Task Load Balancing), the strategy at the beginning of each task, re- estimate the resource overhead of each task, and then according to the amount of tasks to re-allocate the available computer re-sources. This strategy is based on the "time continuity" feature in the computer technology, so it is a dynamic load balancing strategy of the past-frame type. The strategy can handle a plurality of computer requests in a balanced manner with a certain amount of computer resources, and improve the performance of the parallel computer system in a multi-projection or multi-request scenario. This paper first briefly describes the CTLB dynamic load balancing strategy, and then gives the specific algorithm of the dynamic load balancing strategy. Then describes the dynamic load balancing strategy on the GGPRF integration, and finally the per-formance of the dynamic load balancing strategy.
关键词： dynamic load balancing,multi-projection,parallel computer system
更新于2025-09-04 15:30:14
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Technoeconomic analysis of a grid-connected PV and battery energy storage system considering time of use pricing
摘要： This paper examines the technoeconomic optimization of the size of valve-regulated lead acid-type battery energy storage systems (BESSs) in order to minimize the total annual operating cost of a grid-connected photovoltaic BESS within the framework of system operational constraints, using the improved harmony search algorithm. The electricity cost is calculated using time of use pricing, where the price of energy varies according to the load demand. The concept of feed-in-tari? is discussed, where power can be bought from and sold back to the grid. A sensitivity analysis is performed for three cases: without storage, with storage and without peak load shaving, and with both storage and peak load shaving. The total annual operating cost of the system is calculated for all three cases and cost savings are compared. The simulations, performed with MATLAB, show a good optimization performance.
关键词： technoeconomic analysis,Battery energy storage system sizing,time of use pricing,peak load shaving,photovoltaic system
更新于2025-09-04 15:30:14
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Load-Independent Wireless Power Transfer System for Multiple Loads Over a Long Distance
摘要： In this paper, a novel long-distance wireless power transfer (WPT) system using repeater coils is proposed to provide power supplies for the driver circuits in high voltage applications such as flexible alternative current transmission systems (FACTS). Different from most of the existing wireless repeater systems where the load is only connected to the last coil and the repeater coils function solely as power relays, in the proposed system, multiple loads are powered by the repeaters. The repeater coils transfer power not only to the subsequent coils but also to the loads connected to them. Dual coil design is proposed for the repeaters with which load-independent characteristics are obtained with a suitable design of coupling coefficients. As a result, the load power can be easily adjusted without affecting each other. Load current characteristics and system efficiency have been analyzed in detail. The power transfer capability of the proposed system is illustrated for different coil quality factors and coupling coefficients. An experimental setup with 10 loads has been built to validate the effectiveness of the proposed long-distance WPT system. The maximum reachable system efficiency is about 84%.
关键词： dual coil design,Wireless power transfer (WPT),constant load characteristics,current independent,long distance
更新于2025-09-04 15:30:14
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DESIGN OF NOVEL COMPACT TRI-BAND BANDPASS FILTER WITH CONTROLLABLE FREQUENCIES AND HIGH SELECTIVITY
摘要： This paper presents a compact tri-band bandpass ?lter (BPF) with high selectivity. The proposed ?lter utilizes novel stub-loaded quarter-wavelength resonators and conventional uniform quarter-wavelength resonators. The latter is embedded in the former, and they are separated by a feed line. Due to these quarter-wavelength resonators, the total size is greatly reduced. Moreover, the passband frequencies can be controlled individually. To enhance its selectivity, source-load coupling is employed. For demonstration, an experimental ?lter is implemented. High skirt selectivity and suppression levels are observed in the measured results. The circuit area of the ?lter is 0.17λg × 0.19λg, featuring compact size.
关键词： high selectivity,compact size,stub-loaded quarter-wavelength resonators,tri-band bandpass filter,source-load coupling
更新于2025-09-04 15:30:14