自制太阳能电动自行车上路

2005年6月12日，74岁的徐志清老人向人们介绍他自己制作的电动自行车的太阳能电源。当日，在杭州举办的节能成果展上，徐志清将自己制作的一辆利用光伏电源的电动自行车骑到了现场，引起了人们的关注。     

电动自行车太阳能充电控制系统设计

介绍了以太阳能供电的电动自行车充电控制系统的组成及工作原理。充电系统采用电动车充电端子正负极性自动识别的方法和自适应充电控制方案,提高了电动自行车充电的适应性。测试表明,该系统可以满足电动自行车快速充电的需要,并能适应36,48,72 V常见的电压等级。经过长时间的使用表明,该充电系统性能稳定,质量可靠。     

利用太阳能实现电动自行车供电的研究

在对太阳电池和锂电池的特性分析基础上,提出太阳电池对锂电池充电的控制方法及太阳电池与锂电池同时给电动自行车供电的控制方法,并设计一套基于STM32单片机,能实现最大功率点跟踪的太阳能电动自行车混合供电控制器。实验测试表明:太阳电池单独供电时其输出功率可达到210 W,车速可以达到19.8 km/h,满足骑行要求;太阳电池和蓄电池通过DC-DC变换器并联给电动自行车供电时电源的总输出功率可提高到278 W,车速可提高到25.7 km/h。电动自行车在晴天行驶,太阳能能够满足其电能的需要。     

太阳能电动自行车可行性分析与实践

一前言近十几年电动自行车产业获得了快速发展,它的发展基础是电动车技术的进步和现代高新技术的成果,业内人士把它称为高技术的结合体,这是非常恰当的。电动机采用钕铁硼以后,体积可以做得很小,只有普通电机的1/5,而且重量很轻。现代电力电子技术和单片机技术使得电动自行车的控制系统设计完美。电动自行车有如下优点:     

电动自行车新发明——一种实现太阳能电动自行车的新装置

近30年来,伴随中国经济的高速发展,能源消耗总量相当于412×10^8t标准煤,年均增幅达5．5％,而21世纪的前8年,中国能源消耗年均增速更达9．1％。2009年中国能源消费总量达30×10^8t标准煤。     

太阳能光伏发电供热系统的性能分析

建立了一个二维模型以模拟系统工作性能,讨论了聚光比、冷却水流速度等参数对系统性能的影响.随聚光比增加,太阳电池温度近乎线性增加,而系统电效率先增加后减小,热效率则先减小后增加.冷却水流速度的增加能减小电池温度,增加系统电效率;增加水流速度对系统性能的影响大小与水流所处的流动状态(层流、过渡区、湍流)以及聚光比的大小有关.     

空间太阳能热动力发电系统

目前,航天器供电普遍采用太阳能光伏电池阵（PV）与化学蓄电池组合的方式。太阳能光伏电池阵发电系统光电转换效率较低,一般只有１４％左右。随着航天活动的扩展,对电能的需求也越来越大,由美国、俄罗斯、欧洲、日本和加拿大共同建造的国际阿尔法空间站总的电能需求将达１１０kW。随着功率的增加,光伏电池阵迎风面积将显著增大,使得发射成本和轨道维护成本大大增加;此外,蓄电池的寿命较短,在空间站运行期间需经常更换,增加了总的运行成本。太阳能热动力发电系统（SDPS）是一种新的空间太阳能／电能转换系统。它的优点是相对重…     

电动自行车阻燃性能测试装置设计要点

通过对电动自行车标准分析,设计了一种满足阻燃性能测试标准要求的垂直燃烧测试装置,确保了测试过程的有效性及检测结果的准确性.     

太阳能自行车

据英国媒体近日报道，英国发明了一种靠太阳产生动力驱动的太阳能自行车，这种自行车可以减缓骑车人疲劳并且对环境没有任何破坏，是环保型概念车。     

Development of fuel-cell-powered electric bicycle

The design, fabrication, and testing of a prototype of electric bicycle powered by a proton exchange membrane fuel cell (PEMFC) is reported. The fuel-cell system is composed of a 300-W fuel-cell stack, metal hydride canisters, air pumps, solenoid valves, cooling fans, pressure and temperature sensors, and a microcontroller. To reduce cost, all components are commercially available except for the microcontroller, which has been developed to operate the system effectively. The fuel-cell system is installed on a commercial electric bicycle. Results show that the efficiency of the fuel-cell system can reach up to 35%, and the ratio of travel distance to fuel consumption of the prototype electric bicycle is about 1.35 km g⁻¹ H₂.     

Utility-scale solar photovoltaic hybrid system and performance analysis for eco-friendly electric vehicle charging and sustainable home

Electricity energy has a crucial importance role for social and economic developments all over the world. Nowadays, the worldwide generation of electricity mostly depends on conventional sources. These sources are limited in the environment and also responsible for ecological problems like environmental pollution. Renewable energy sources have important aspects such as feasibility, efficiency, and environment-friendly in comparison to conventional energy resources. In order to overcome environmental problems, this proposed study focuses on solar photovoltaic hybrid system for eco-friendly electric vehicle charging and house based on machine learning system. In order to realize numerical study, Homer Pro and PVSOL software are used. Various parameters of economic feasibility, sizing strategies with logical advancements, and optimization methods are numerically considered and analyzed to compare measurement one.     

Matching of solar cells and performance of a solar battery

The paper seeks to extend the results reported by the authors at the Paris Conference of the ISES, 1973 and the Hamburg Conference, September 1974. Starting with the deduction that matching with the external load ensures operation at the maximum power point of the I–V characteristics of a solar cell and that the internal resistance and efficiency of a cell are dependent on intensity of the incident radiation, the effect of variation of insolation on the performance of a solar battery-motor system is examined in general terms. The cases of cells with series resistance dependent on and independent of insolation are separately considered and the desirability of introducing new criterion in design of motor, when driven by a solar battery, is stressed. The role of a concentrator, in preserving matching and uniformity of output, is pointed out and its optimum values for minimum variation, arising out of the diurnal variation of the AM-value, are obtained for typical Si and CdS cells. The more important parameters, determining the effective efficiency of solar cell in a battery using concentrator and storage system, are introduced and the expression for cost/W, as reported in Paris Conference, is further refined. Methods for estimation of these parameters, keeping in view the concentrator used, are also indicated. It is found that shadowing and non-uniform illumination of the solar cell panel can affect both the efficiency and matching of the system.     

Investigation of performance and emission characteristics of a biogas fuelled electric generator integrated with solar concentrated photovoltaic system

Integration of renewable energy systems with the appropriate technology plays a pivotal role in resolving the problem of sustainable energy supply. This paper is aimed to describe the concept of integration of biomass and solar concentrated photovoltaic (CPV) energy system. The present study focused particularly on the investigation of performance and emission from a 1.4 kVA Spark Ignition, constant speed generator using raw biogas integrated in hybrid energy system. The experiments are conducted at different fuel flow rates under varying electric loading conditions. Comparing with LPG as fuel, the power deterioration is observed to be 32% on raw biogas, due to its low calorific value. The maximum power output and brake thermal efficiency using biogas is witnessed to be 812 W and 19.50% respectively. The exhaust emission analysis of generator using biogas displays considerably reduced carbon monoxide and hydrocarbons whereas there is no significant difference in nitrogen oxides concentration levels while comparing with LPG, ascertaining it to be an eco-friendly fuel. The biogas fuelled electric generator integration with CPV system can attain sustainable rural energy supply.     

The global significance of solar energy supply

Abstract

A personal view on the prospects for solar energy and photovoltaics is put forward in the form of a number of statements, commencing with a very long range point of view.     

让太阳能推动电动汽车“动”起来

目前,全球石油资源紧缺,油价持续上涨,严重制约了我国和世界经济的发展.怎样才能彻底摆脱对石油能源的依赖?笔者认为,大力开发利用太阳能,以太阳能发电为动力来源的电动汽车逐步替代或最终取代以石油能源为动力来源的燃油汽车,是目前乃至今后理想的选择.