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1、 太阳能并网逆变器PV Grid-Connected inverter光伏并网发电系统：grid-connected PV system光伏并网发点系统由光伏组件、并网逆变器、计量装置及配电系统组成（如下图所示）。太阳能能量通过光伏组件转化为直流电力，再通过并网型逆变器将直流电能转化为与电网同频率、同相位的正弦波电流，一部分给当地负荷供电，剩余电力馈入电网。grid-connected PV system consists of PV modules, grid-connected inverter, metering devices and distribution system compo
2、nents（as shown on the diagram）. The solar energy is converted into DC current by PV modules and then feeding into the local power grid network by the grid-connected in inverters which synchronized the frequency,phase and pure sine waveform with the power network.the synchronized power is partially u
3、sed for local load demands while the rest power is fed-in the power network. 提供更好的翻译建议窗体顶端窗体底端提供更好的翻译建议光伏并网发电系统结构示意图：grid-connected PV system block diagram （见阳光电源第6页）产品介绍：Product Introduction （光伏并网逆变器是光伏发电系统的核心组件，需要将太阳能电池板发出的直流电高效的转换为可并到市电电网的交流电。考核光伏逆变器的关键指标是效率和寿命，本光伏逆变器采用semikron的最新一代的IGBT模块，直流全部采用
4、层叠母排设计， 完善的数十种保护功能，对直流输入、并网环境、系统状态、负载情况、孤岛状态等持续密切监测，最大可能的减少系统损坏，产品通过器件级UL认证，加上可靠性的电子设计，这一切有效的保证了光伏逆变器的安全性和寿命。配有正弦波滤波器，输出电压畸变小于2%，近似标准正弦波。采用无变压器设计，可直接并网，减少了损耗；先进的MPP跟踪效率，在DC 300V800V宽电压范围内均能保证最大限度的获取光伏电池板的能量。高级电子元件，以及优化的母排设计和结构也减少了逆变器内部的能量损耗。本光伏逆变器能高效的获取光伏模块的能量。本光伏逆变器输入电压：DC 300V800V，输出电压：AC 340V480V
5、，输出电压频率：50Hz/60Hz可设置。组成光伏发电系统后，直接和电网并网，太阳光足够时用户用电取自太阳能，用不完的则卖给电网，太阳光不足时则从电网获取。在国家政策补贴下有较高的经济效益。 应用领域 太阳能丰富地区的工厂、无电网覆盖地区供电、光伏变电站等。 公司对采用美国的先进技术进行了中国化设计，在保证质量的同时，不但提高了产品的使用寿命，还提高了产品效率等诸多性能。 太阳能逆变器的效率指的是逆变器把直流电转换为交流电的效率，目前，欧洲逆变器效率普遍较高，可达到97.2%。国内市场的主要带隔离变压器的并网逆变器效率在92%到96%之间，无变压器逆变器可以达到97%以上。无变压器设计减少了不
6、必要的损耗，同时降低了成本，对效率和安全性都有很好的提升，体积更小，安装连接更方便。光伏并网逆变器可称为：太阳能发电逆变器、太阳能电池逆变器、太阳能光伏逆变器等。 用途: 太阳能逆变器广泛应用于光伏发电，在野外给通信负载供电，同时也为石油工人日常生活提供电力，可为电视、电灯、电脑等设备供电。 常规应用功能：应用于太阳能光伏发电系统，将所发电能输入电网或直接向各类交流负载供电。应用特点：与电网直接并联，可多台并联。本公司目前推出的光伏逆变器产品采用全数字化控制，先进的功率转换与控制技术，高效的无变压器设计等领先技术，使得光伏逆变器产品的转换效率高达97%以上，达到世界先进水平。逐步形成多项核心专
7、利技术、专业的外观工业设计、人性化的安装方式与人机界面、严格的产品可靠性设计，使整个产品具备国际市场竞争的实力。）工作原理示意框图：电路框架图（见阳光电源第14页）为单相图，不妥，改为82页上半部分图室内型光伏并网逆变器：本公司推出的该系列小功率光伏并网逆变器可灵活适用于各类室内型户用屋顶、商用屋顶系统，额定输出功率分别为1.5KW、2.0KW 、2.8KW、4.0KW。96%的高效率为客户提供了长期稳定的发电收益。无风扇设计和完善的保护功能提升了系统可靠性。此系列逆变器无风扇设计、友好的人机界面和即插即用等特点使得安装维护变得轻松快捷。效率曲线： （见正泰资料）高可靠性：l 无风扇设计l 带
8、有内部GFCIl 完善的保护功能适用性强：l 无变压器设计l Plug & Playl 操作便捷l MPPT输入范围宽智能化：l 多功能的通讯插件l 当地 / 远程监控l 实时监控主要技术参数： 1.5KW 2.0KW 2.8KW 4.0KW 输入侧参数：最大直流电压 450VDC 500VDC 500VDC 500VDC最大功率跟踪范围 150 405VDC 150 450VDC 150 450VDC 150 450VDC最大直流功率 1760W 2320W 3180W 4630W最大输入电流 8.9ADC 10ADC 13ADC 20ADCMPPT组数 1 1 1 1输出侧参数：额定输出功
9、率 1500W 2000W 2800W 4000W （见正泰资料） 20 KW 光伏并网逆变器：本公司推出的该款光伏并网逆变器可灵活适用于各类商用屋顶系统或并网电站系统，额定输出功率20KW。该逆变器最大程度减少损耗，使得整个系统效率在全范围内达到最大化。该款光伏并网逆变器体积小，重量轻，功率密度高，并有多种灵活的安装方式，易于安装维护。人性化的人机界面及多语种液晶显示，方便设定保护及运行参数。高防护等级、室外应用，可节省配电室建造及电缆长度等费用。全数字化控制、完善的保护功能，以及先进的热设计使系统达到更高的可靠性。效率曲线（见正泰资料）高效率：l 最高转换效率达98%l 最大功率跟踪（MP
10、PT）效率99.9%高可靠性：l 严格的降额设计l 完善的保护功能l 全数字化控制l 先进风道设计，确保散热可靠l 实现孤岛保护l 漏电流保护及绝缘阻抗检测l 双MCU结构实现双重监控强适应性l IP65防护等级，适应室外应用 l 多种语言显示l 适应高海拔应用l 可选无功功率可调、有功功率降额等功能主要技术参数：输入侧参数：最大直流电压* 850 VDC最大功率跟踪范围 430 800 VDC最大直流功率 22 KWp最大输入电流 42 A最大输入路数 5MPPT组数 1输出侧参数：额定输出功率 20 KW额定电网电压 380 VAC （三相） 允许电网电压 323 418 VAC（三相）额
11、定电网频率 50 Hz总电流波形畸变率 2%功率因数 接近1系统最大效率 98%欧洲效率 97.5%防护等级 IP65夜间自耗电 20W工作温度 -20 - +65冷却方式 风冷允许相对湿度 0 95%，无冷凝海拔高度 4000米显示与通讯：显示 LCD标准通讯方式 RS485外形：长X宽X高（mm）重量（Kg）(*注：超过“最大直流电压”中标注的电压值，可能对设备造成永久性损伤。)（该最大效率是在460 VDC输入，外接电源情况下测得。）100 KW 光伏并网逆变器：本公司推出的该款光伏并网逆变器可灵活适用于各类商用屋顶系统或并网电站系统，额定输出功率100KW。先进的PWM调制算法和MPP
12、T控制，可以最大程度减少系统损耗，使得整个系统效率在全范围内达到最大化，最高效率97.6%。采用全数字化控制、完善的保护功能，以及先进的散热设计，使系统达到更高的可靠性。（产品的外观图片） 效率曲线： （见正泰资料）高效率：l 最高转换效率达97.6%l 最大功率跟踪（MPPT）效率99.9%强适应性：l 多种语言显示l 适应高海拔应用l 可选无功功率可调、有功功率降额等功能高可靠性：l 严格的降额设计l 完善的保护功能l 先进风道设计，确保散热可靠l 实现孤岛保护l 漏电流保护及绝缘阻抗检测l 双MCU结构实现双重监控（几张不同角度的产品照片）主要技术参数：输入侧参数：待添加的隐藏文字内容3
13、最大直流电压* 880 VDC最大功率跟踪范围 430 820 VDC最大直流功率 110 KWp最大输入电流 250 A最大输入路数 4MPPT组数 1输出侧参数：额定输出功率 100 KW额定电网电压 380 VAC （三相） 允许电网电压 323 418 VAC（三相）额定电网频率 50 Hz总电流波形畸变率 3%功率因数 接近1系统最大效率 97.6%欧洲效率 97.0%防护等级 IP20夜间自耗电 50W工作温度 -20 - +60冷却方式 风冷允许相对湿度 0 95%，无冷凝海拔高度 4000米显示与通讯：显示 LCD标准通讯方式 RS485外形：长X宽X高（mm）重量（Kg）(*
14、注：超过“最大直流电压”中标注的电压值，可能对设备造成永久性损伤。)（该最大效率是在460 VDC输入，外接电源情况下测得。）Editors note: Judson Jones is a meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from tornadoes to typhoons. Follow him on Twitter: jnjonesjr (CNN) - I will always wonder what
15、 it was like to huddle around a shortwave radio and through the crackling static from space hear the faint beeps of the worlds first satellite - Sputnik. I also missed watching Neil Armstrong step foot on the moon and the first space shuttle take off for the stars. Those events were way before my ti
16、me.As a kid, I was fascinated with what goes on in the sky, and when NASA pulled the plug on the shuttle program I was heartbroken. Yet the privatized space race has renewed my childhood dreams to reach for the stars.As a meteorologist, Ive still seen many important weather and space events, but rig
17、ht now, if you were sitting next to me, youd hear my foot tapping rapidly under my desk. Im anxious for the next one: a space capsule hanging from a crane in the New Mexico desert.Its like the set for a George Lucas movie floating to the edge of space.You and I will have the chance to watch a man ta
18、ke a leap into an unimaginable free fall from the edge of space - live.The (lack of) air up there Watch man jump from 96,000 feet Tuesday, I sat at work glued to the live stream of the Red Bull Stratos Mission. I watched the balloons positioned at different altitudes in the sky to test the winds, kn
19、owing that if they would just line up in a vertical straight line we would be go for launch.I feel this mission was created for me because I am also a journalist and a photographer, but above all I live for taking a leap of faith - the feeling of pushing the envelope into uncharted territory.The guy
20、 who is going to do this, Felix Baumgartner, must have that same feeling, at a level I will never reach. However, it did not stop me from feeling his pain when a gust of swirling wind kicked up and twisted the partially filled balloon that would take him to the upper end of our atmosphere. As soon a
21、s the 40-acre balloon, with skin no thicker than a dry cleaning bag, scraped the ground I knew it was over.How claustrophobia almost grounded supersonic skydiverWith each twist, you could see the wrinkles of disappointment on the face of the current record holder and capcom (capsule communications),
22、 Col. Joe Kittinger. He hung his head low in mission control as he told Baumgartner the disappointing news: Mission aborted.The supersonic descent could happen as early as Sunday.The weather plays an important role in this mission. Starting at the ground, conditions have to be very calm - winds less
23、 than 2 mph, with no precipitation or humidity and limited cloud cover. The balloon, with capsule attached, will move through the lower level of the atmosphere (the troposphere) where our day-to-day weather lives. It will climb higher than the tip of Mount Everest (5.5 miles/8.85 kilometers), drifti
24、ng even higher than the cruising altitude of commercial airliners (5.6 miles/9.17 kilometers) and into the stratosphere. As he crosses the boundary layer (called the tropopause), he can expect a lot of turbulence.The balloon will slowly drift to the edge of space at 120,000 feet (22.7 miles/36.53 ki
25、lometers). Here, Fearless Felix will unclip. He will roll back the door.Then, I would assume, he will slowly step out onto something resembling an Olympic diving platform.Below, the Earth becomes the concrete bottom of a swimming pool that he wants to land on, but not too hard. Still, hell be travel
26、ing fast, so despite the distance, it will not be like diving into the deep end of a pool. It will be like he is diving into the shallow end.Skydiver preps for the big jumpWhen he jumps, he is expected to reach the speed of sound - 690 mph (1,110 kph) - in less than 40 seconds. Like hitting the top
27、of the water, he will begin to slow as he approaches the more dense air closer to Earth. But this will not be enough to stop him completely.If he goes too fast or spins out of control, he has a stabilization parachute that can be deployed to slow him down. His team hopes its not needed. Instead, he
28、plans to deploy his 270-square-foot (25-square-meter) main chute at an altitude of around 5,000 feet (1,524 meters).In order to deploy this chute successfully, he will have to slow to 172 mph (277 kph). He will have a reserve parachute that will open automatically if he loses consciousness at mach s
29、peeds.Even if everything goes as planned, it wont. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters).It might not be the moon, but Kittinger free fell from 102,800 feet in 1960 - at the dawn of an infamous space race that captured the hearts of many. Baumgartner will attempt to break that record, a feat that boggles the mind. This is one of those monumental moments I will always remember, because there is no way Id miss this.
