AC交流电
Alternating current
Amorphous silicon solar cell 非晶硅太阳能电池
Thin-film solar cells are usually produced by evaporating several semi-conductor films onto a so-called "substrate"
Ampère 安培
Unit indicating the strength of electric current
Assembling system 集成系统
System to install solar modules on roofs, façades or in the field.
Azimuth angle 方位角
Describes the deviation from the South towards East-western direction
Building-integrated PV (BIPV)
Used to describe a structure where PV replaces conventional materials and is integrated into the building. Typically, a photovoltaic array is incorporated into the roof or walls of a building. Roof tiles with integrated PV cells can now be purchased. Arrays can also be retrofitted into existing buildings; in this case they are usually fitted on top of the existing roof structure. Alternatively, an array can be located separately from the building but connected by cable to supply power for the building.
By-pass diode 旁路二极管
Conducts the electricity automatically past a module in case it is shadowed in one series. This is supposed to prevent any destruction due to overheating.
Circuit 电路
A system of conductors that convey electricity.
CdTe solar cell碲化镉太阳能电池
Thin-film solar cell made of very thin CdTe semi-conductor films (< 3 microns)
CIS solar cell
Thin-film solar cell made of several films of differently doped copper-indium-diselenide
Circuit breaker 断路开关
A safety device that shuts off power when it senses too much current.
Combiner box 和路箱
Where the electrical wiring from the PV modules is joined together in parallel to combine electrical currents.
Conductor 导体
A material that is used to convey electricity, i.e. wires.
Conversion efficiency 转换效率
The percentage of electricity that is created by a solar cell as compared to the amount of energy needed to generate that electricity.
Current 电流
The flow of electricity between two points. Measured in amps.
DC 直流电
Direct current
Energetic amortization period 能量偿还期
Period of time a photovoltaic system requires to produce the energy required for production.
Efficiency 功率
The ratio of output energy to input energy.
Electrical grid 电网
A large distribution network that delivers electricity over a wide area.
Electrode 电极
A conductor used to lead current into or out of a nonmetallic part of a circuit.
Energy 能量
Usable power. Measured in kWh.
Energy audit 能量审核
A process that determines how much energy you use in your house or apartment.
Energy yield 能量输出
Electric energy indicated in kWh yielded by a photovoltaic system
ENS
Equipment to control the grid with attributed all-pole control element in series. The ENS includes a redundant voltage and frequency control of the electricity grid and evaluates any leaps ascertained in the grid impedance. If the set limits are exceeded, the ENS will switch off the inverter. When the line voltage is re-established, the inverter will restart operation automatically.
European efficiency rate
Weighted efficiency rate is calculated by weighting different partial load efficiency rates and the full-load efficiency rate in line with the frequency of their appearance.
Facade system 正面系统
Photovoltaic system installed on the facade of a building or an integral part of a facade.
Feed-in meter 输入计
Measuring instrument for the supply of electric energy into the public power grid (unit in kWh) Mismatching interconnection of better and worse modules in one string as a consequence of which the worst module of one series determines the electricity.
Field system 野外系统
Photovoltaic system installed in a field
Flat-roof system 平台屋顶系统
Photovoltaic system installed on a flat roof.
Fossil fuels 矿物燃料
Fuels that are formed underground from the remains of dead plants and animals. i.e. oil, natural gas, and coal are fossil fuels.
Global radiation 总辐射
Sum of diffuse, direct and reflected solar radiation onto a horizontal surface.
Greenhouse effect 温室效应
When heat from the sun becomes trapped in the Earth's atmosphere due to certain gases.
Greenhouse gases 温室气体
The gases responsible for trapping heat from the sun within the Earth's atmosphere. i.e. water vapor, carbon dioxide, methane, ozone, chlorofluorocarbons, and nitrogen oxides.
Grid 电网
A distribution network, including towers, poles, and wires that a utility uses to deliver electricity.
Grid-connected PV system 并网光伏系统
When the electricity grid is available but electricity from a clean source (solar) is desired, solar panels can be connected to the grid. Provided that sufficient panels are placed, the appliances in the house/building will then run on solar electricity. A grid-connected solar electricity system basically consists of one or more solar panels, an inverter, cables, the electric load and a support structure to mount the solar panels.
Hertz (HZ) 赫兹
The frequency of electrical current described in cycles per second, i.e. Appliances in the United States use 60 HZ.
Inverter 逆变器
Converts the DC output of the PV system into usable AC output that can be fed directly into the building load.
Irradiance 辐照度
the amount of solar energy that strikes a surface during a specific time period. Measured in kilowatts.
I-V curve IV曲线
A graph that plots the current versus the voltage from the solar cell as the electrical load (or resistance) is increased from short circuit (no load) to open circuit (maximum voltage). The shape of the curve characterizing cell performance. Three important points on the IV curve are the open-circuit voltage, short-circuit current, and peak or maximum power (operating) point. Junction box The point on a solar module where it connects, or is strung, to other solar modules.
In-roof installation 镶嵌屋顶系统
Photovoltaic system which is integrated into the roof cladding
Island system 独立系统
Grid-independent power supply system
kWh – kilowatt hour
Unit indicating energy/work and corresponding with the performance of one kilowatt during a period of one hour
kWp - Kilowatt peak
Unit indicating the maximum performance under standard test concitions (STC)
Load 负载
The amount of electrical demand used in the building at any given time.
Mono-crystalline silicon solar cell 单晶硅太阳能系统
Basic raw material is a monocrystal drawn from melted silicon.
Multi-crystalline silicon solar cell 多晶硅太阳能电池
Basic raw material is solar silicon cast in blocks.
National Electrical Code (NEC) 国家电气代码
The U.S. minimum inspection requirements for all types of electrical installations, including solar systems.
National Electrical Manufacturers Association (NEMA) 国家电力生产商协会
The U.S. trade association that develops standards for the electrical manufacturing industry.
NREL The National Renewable Energy Laboratory 国家可再生能源实验室
A national lab that concentrates on studying and developing renewable energy sources.
Open circuit voltage 开路电压
Maximum voltage in an electric circuit which is generated when the electricity I equals zero (depending on termperature).
Performance guarantee 性能质保
Extended guarantee of the module producer for the performance of the solar modules.
Performance tolerance 性能公差
Tolerance stated by the producer with regards to the nominal power.
Poly-cristalline solar cell 多晶硅太阳能电池
See multi-crystalline silicon solar cell.
PSC 电力供应公司
Power supply companies.
Peak load 最大负荷
The largest amount of electricity being used at any one point during the day.
Photovoltaic (PV) 光伏
the conversion of light into electricity. The term "photo" comes from the Greek "phos," meaning light. "Voltaic" is named for Alessandro Volta (1745-1827), a pioneer in the study of electricity for whom the term "volt" was named. Photovoltaics, then, means "light electricity."
Photovoltaic (PV) module 光伏组件
A number of photovoltaic cells electrically interconnected and mounted together, usually in a sealed unit of convenient size for shipping, handling and assembling into arrays. The term "module" is often used interchangeably with the term "panel.
Photovoltaic array 光伏阵列
An interconnected system of solar modules that function as a single electricity-producing unit.
Photovoltaic cell 光伏电池（格）
This is the basic unit of a solar module that collects the sun's energy.
Photovoltaic system 光伏系统
A complete set of components that converts sunlight into usable electricity.
Rectifier 整流器
Transforms alternating current into direct current
Roof inclination 屋顶倾斜度
Angle of a roof towards the horizontal
Rated power 额定功率
Nominal power output of an inverter; some units cannot produce rated power continuously. Semiconductor A material that has an electrical conductivity in between that of a metal and an insulator. Typical semiconductors for PV cells include silicon, gallium arsenide, copper indium diselenide, and cadmium elluride.
Short-circuit electricity 短路电流
Maximum electricity in an electric circuit, which is generated when the voltage U at the terminals equals zero (proportional to solar radiation).
Solar generator
Sum of solar modules.
Specific energy yield 能量生产率 （比能率）
Electric energy indicated in kWh and yielded by a photovoltaic system divided by the installed performance (kWp).
Standard Test Conditions – STC 标准测试条件
General conditions under which the perfomance of a solar module is measured in a laboratory. Constant factors for measuring are: Irradiance of 1,000W/m²5f; light spectrum after penetration of 1.5fold density of the atmosphere (AM1,5); temperature of the solar cell 25°C.
Supply meter 电源表
Measuring instrument for the supply of electric energy from the public power grid (unit in kWh)
Termperature coefficient 温度系数
Indicates to what extent the individual factor changes with the temperature. Temperature-independent factors are voltage, electricity and consequently also performance.
Thin-film solar cell 薄膜太能能电池
Roughly a hundred times thinner than crystalline cells. Industrial production procedure (evaporation, atomization procedure…) onto the substrate lowers the cost. Doping specific contamination of purest silicon with impurity atoms. In a so-called diffusion procedure, impure atoms (e.g. borum, phosphor), which can give off electrons, are transported below the surface of the wafers.
Three-phase voltage control 三相电压控制器
Equipment to control the grid. Voltage control of the three phases. If a voltage falls below a stipulated limit, the equipment will be switched off.
Tilt angle 倾斜角
The angle of inclination of a module measured from the horizontal.
Transformer 变压器
Used to step up or down the voltage emerging from the inverter to match the required voltage of the onsite load or the utility interconnection.
Volt 伏特
Unit indicating the voltage.
Watt 瓦特
Unit indicating the performance.
Wh
Unit indicating the watthour.
Wp
Unit indicating the wattpeak.

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