Accurate PV system simulators are implemented with expensive software platforms using paid irradiance data.The main purpose of this paper is to develop and validate a PV system simulator,beginning with a solar cell pa...Accurate PV system simulators are implemented with expensive software platforms using paid irradiance data.The main purpose of this paper is to develop and validate a PV system simulator,beginning with a solar cell parameter extraction model,then test and validate long-termIrradiance data using free online source(Typical Meteorological Year TMY in(PVGIS)European website),and finally building full solar generator simulator to run in working real conditions.Comparing results with Accurate Paid PV simulators(which use theMuneer model)showed good accuracy of the proposed simulator.Work flow starts with the Irradiance model’s data processing,then solar cell 5 parameters model data processing(to extract cell parameters),and finally full system simulator.MATLAB coding programs in real working conditions are used for simulation.Results of solar cell parameter extraction show 99.6%to 99.99%matching with data sheet and cell performance under standard test conditions.Systemmodel simulation output shows 8%less yearly generated energy compared to the PVGIS 2022 long-term simulation(hourly basis(one-year time)).This is due to incident energy variations(between the years 2016 and 2022)of 4.02%.The novelty of the algorithm is the methodology,as it tests irradiance data on an hourly basis and validates results for a whole continuous year.Also,the 5-parameter solar cell model is used to be validated in long term analysis,not only STC conditions and could be applied on any PV solar cell.The algorithm and block diagramused are scalable,modular,and interchangeable with similarmodels to be tested.This simulator could test severalmethods andmodels in solar pv technology.展开更多
为了研究船舶能量消耗的组成和EEOI的预测问题,以主机油耗作为研究重点,建立了船舶能效营运指数(ehip energy efficiency operational indicator,EEOI)分析预测仿真模型。建立了推进系统-船体运动-环境的联合数学模型,对船舶运动及推进...为了研究船舶能量消耗的组成和EEOI的预测问题,以主机油耗作为研究重点,建立了船舶能效营运指数(ehip energy efficiency operational indicator,EEOI)分析预测仿真模型。建立了推进系统-船体运动-环境的联合数学模型,对船舶运动及推进系统状态进行迭代计算。采用欧洲中期天气预报中心(European Centre for MediumRange Weather Forecasts,ECMWF)的气象数据,结合目标船的设计、实验参数及航线进行了仿真。根据对目标船在不同转速、不同航线的EEOI进行仿真,结果表明:不同主机转速对推进系统的能量消耗组成有显著影响。模型能够对不同转速的时间及EEOI进行预测,为航速设计提供依据;同时还能对不同航线的EEOI进行对比,为基于能效的航线优化提供了研究基础。展开更多
With the rapid development of electronics and the growing demand for highervehicle performance, intelligent shift technology is becoming increasingly important, and itpromises to be a developing trend in vehicle autom...With the rapid development of electronics and the growing demand for highervehicle performance, intelligent shift technology is becoming increasingly important, and itpromises to be a developing trend in vehicle automatic transmissions, A new simulation model ispresented, which includes engine, powertrain, tire and vehicle dynamics models. Based on the model,simulation experiments are conducted to investigate the slope shift strategy. The data andconclusions obtained from the simulations are valuable contributions to the development of anintelligent slope shift strategy.展开更多
文摘Accurate PV system simulators are implemented with expensive software platforms using paid irradiance data.The main purpose of this paper is to develop and validate a PV system simulator,beginning with a solar cell parameter extraction model,then test and validate long-termIrradiance data using free online source(Typical Meteorological Year TMY in(PVGIS)European website),and finally building full solar generator simulator to run in working real conditions.Comparing results with Accurate Paid PV simulators(which use theMuneer model)showed good accuracy of the proposed simulator.Work flow starts with the Irradiance model’s data processing,then solar cell 5 parameters model data processing(to extract cell parameters),and finally full system simulator.MATLAB coding programs in real working conditions are used for simulation.Results of solar cell parameter extraction show 99.6%to 99.99%matching with data sheet and cell performance under standard test conditions.Systemmodel simulation output shows 8%less yearly generated energy compared to the PVGIS 2022 long-term simulation(hourly basis(one-year time)).This is due to incident energy variations(between the years 2016 and 2022)of 4.02%.The novelty of the algorithm is the methodology,as it tests irradiance data on an hourly basis and validates results for a whole continuous year.Also,the 5-parameter solar cell model is used to be validated in long term analysis,not only STC conditions and could be applied on any PV solar cell.The algorithm and block diagramused are scalable,modular,and interchangeable with similarmodels to be tested.This simulator could test severalmethods andmodels in solar pv technology.
文摘为了研究船舶能量消耗的组成和EEOI的预测问题,以主机油耗作为研究重点,建立了船舶能效营运指数(ehip energy efficiency operational indicator,EEOI)分析预测仿真模型。建立了推进系统-船体运动-环境的联合数学模型,对船舶运动及推进系统状态进行迭代计算。采用欧洲中期天气预报中心(European Centre for MediumRange Weather Forecasts,ECMWF)的气象数据,结合目标船的设计、实验参数及航线进行了仿真。根据对目标船在不同转速、不同航线的EEOI进行仿真,结果表明:不同主机转速对推进系统的能量消耗组成有显著影响。模型能够对不同转速的时间及EEOI进行预测,为航速设计提供依据;同时还能对不同航线的EEOI进行对比,为基于能效的航线优化提供了研究基础。
基金This project is supported by Important Scientech Problem Tackling Subject Foundation under the State 9th 5-Year Plan, China(No.96-A05-04-01).
文摘With the rapid development of electronics and the growing demand for highervehicle performance, intelligent shift technology is becoming increasingly important, and itpromises to be a developing trend in vehicle automatic transmissions, A new simulation model ispresented, which includes engine, powertrain, tire and vehicle dynamics models. Based on the model,simulation experiments are conducted to investigate the slope shift strategy. The data andconclusions obtained from the simulations are valuable contributions to the development of anintelligent slope shift strategy.
