Showing 25 pages using this property.
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Low Irradiance Conditions + | 1. A standard for testing and sorting of photovoltaik modules focused on the temperature and irradiation data, given by the International Electrotechnical Commission (IEC). By using this standard a comparison of the modules will be more accurately. These test conditions are: Air Mass 1.5g,Celltemperature 25°C and irradiation of 200 W/m²., 2. Low Irradiance Conditions (LIC) specify the testing of a module's output performance under low irradiance conditions, simulating and testing performance of solar panels at higher latitudes and winter., LIC applies an insolation of 200W/ m², 25°C module temperature, zero wind speed and an air mass of AM 1.5. |
Low Temperature Conditions + | 1. A standard for testing and sorting of photovoltaik modules focused on the temperature and irradiation data, given by the International Electrotechnical Commission (IEC). By using this standard a comparison of the modules will be more accurately. These test conditions are: Air Mass 1.5g,Celltemperature 15°C and irradiation of 500 W/m²., 2. In contrast to HTC, the low temperature conditions (LTC) test the performance of solar panels under comparably lower irradiance and temperature levels and are defined as solar panel testing at 500W/ m², 15°C module temperature, zero wind speed and AM 1.5. |
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MV grid district + | 1. An area that is connected to one MV substation. |
Master Salve + | 1. For computer networks, master-slave is a model for a communication protocol. A device or process (known as a master) controls one or more devices or processes (known as slaves). As soon as the relationship from master / slave is established, the control direction always goes from the master to the slave or to the slaves., 2. Master slave, which means master computer satellite, is a hierarchical concept for the organization and distribution of tasks between superordinate stations and subordinate computing units, the slaves. Such concepts are used whenever a computing unit assumes the control and task distribution of another. |
Materialised view + | 1. A materialized view is defined as a table which is actually physically stored on disk, but is really just a view of other database tables. In PostgreSQL, like many database systems, when data is retrieved from a traditional view it is really executing the underlying query or queries that build that view., 2. A materialized view, or snapshot as they were previously known, is a table segment whose contents are periodically refreshed based on a query, either against a local or remote table. Using materialized views against remote tables is the simplest way to achieve replication of data between sites. |
Maximum Power Point + | 1. The maximum power point (MPP) is the point on the current-voltage (I-V) curve of a solar module under illumination, where the product of current and voltage is maximum (Pmax, measured in watts). The points on the I and V scales which describe this curve point are named Imp (current at maximum power) and Vmp (voltage at maximum power.), 2. In photovoltaic systems, the point at which the most possible current is drawn from a cell, and the voltage subsequently drops off. The MPP changes slightly with temperature and intensity of sunlight. |
Maximum Power Point Tracking + | 1.Maximum Power Point Tracking (MPPT), is an electronic system that operates the Photovoltaic (PV) modules in a manner that allows the modules to produce all the power they are capable of., 2. Maximum Power Point tracking is an algorithm that is included in charge controllers used for extracting maximum available power from PV modules under certain conditions. |
Metadata + | 1. Metadata is data (information) that provides information about other data., 2. Three distinct types of metadata exist: structural metadata, descriptive metadata, and administrative metadata., 3. Metadata means "data about data". Although the "meta" prefix (from the Greek preposition and prefix μετά-) means "after" or "beyond", it is used to mean "about" in epistemology. Metadata is defined as the data providing information about one or more aspects of the data; it is used to summarize basic information about data which can make tracking and working with specific data easier. Some examples include: Means of creation of the data, Purpose of the data, Time and date of creation, Creator or author of the data, Location on a computer network where the data was created, Standards used, File size., 4. "metadata describes a resource for purposes such as discovery and identification. It can include elements such as title, abstract, author, and keywords.", 5. "Metadata summarizes basic information about data, which can make finding and working with particular instances of data easier. For example, author, date created and date modified and file size are examples of very basic document metadata. Having the abilty to filter through that metadata makes it much easier for someone to locate a specific document." |
Metal–Oxide–Semiconductor Field-Effect Transisto + | 1. The MOSFET (metal–oxide–semiconductor field-effect transistor) is a type of field-effect transistor (FET). It has an insulated gate, whose voltage determines the conductivity of the device. This ability to change conductivity with the amount of applied voltage can be used for amplifying or switching electronic signals., 2. MOSFET is a special type of field-effect transistor ( FET ) that works by electronically varying the width of a channel along which charge carriers flow. |
Micro-inverter + | 1. A device used in photovoltaics that converts direct current (DC) generated by a single solar module to alternating current (AC). The output from several microinverters is combined and often fed to the electrical grid., When series connecting solar panels, the string of panels work as well as the weakest panel in the series string. If you have 12 panels wired in series, and one panel is under-performing for some reason, then the entire series string will be dragged down by the under-performing panel. However, when installing a micro inverter on each panel, this means that each panel in the 12 panel array is maximised and managed independently of its neighbouring panel., 2. A micro-inverter converts the direct current of the PV system directly into the alternating current directly at the PV module. It is advantageous that module changers can react better to rapidly changing irradiation conditions, and that existing PV systems with string inverters can also be supplemented step by step with modules with module inverters. |
Mismatch + | 1. Mismatch is the loss of power in series-connected photovoltaic modules. This is due to the different performance characteristics of the individual solar modules. If several modules are connected in series, the same current flows through all of them. The low-power PV module in a series circuit limits the current of all connected photovoltaic modules., 2. Mismatch is a term used in English, which is found mainly in PV systems whose modules are connected in series. The mismatch is characterized by a loss of performance, which can be caused by the following factors: differences in the performance of the PV modules, differences in the inclination of the PV modules, differences in the orientation of the PV modules or differences in the PV modules used. |
Mixed integer linear problem + | A mixed-integer linear program is a problem with, In mathematical terms, given vectors f, lb, and ub, matrices A and Aeq, corresponding vectors b and beq, and a set of indices intcon, find a vector x to solve., - linear objective function, fTx, where f is a column vector of constants, and x is the column vector of unknowns, - bounds and linear constraints, but no nonlinear constraints (for definitions, see Write Constraints), - restrictions on some components of x to have integer values |
Model + | 1. The word 'model' is used in terms of 'scientific model' describing "an imperfect or idealized representation of a physical system" in order "to make a particular part or feature of the world easier to understand, define, quantify, visualize, or simulate by referencing it to existing and usually commonly accepted knowledge.", A formal model is a symbolic assertion in logical terms of an idealized relatively simple situation sharing the structural properties of the original factual system., In the OpEnMod Initiative context, the term model generally refers to computational models. |
Model Components + | In the context of the software architecture, a component is part of a software that can interact with other software parts according to the rules of a component model., Thus, a component is characterized by being an element of a component-based application and having defined interfaces for connection to other components. The exact form of a component depends on the respective component model. |
Model Factsheet + | 1. Factsheets for (energy system) models |
Model class + | 1. A model can be classified according to different aspects, 1.a Optimization: LP, MILP, Non-linear;, 1.b Simulation: Agent-based, System Dynamics, Accounting Framework, Game Theoretic Model; Other |
Modelling approach + | 1. The model approach corresponds to the design and the underlying structure of a model. |
Monitoring + | 1. Monitoring is a continuous assessment that aims at providing all stakeholders with early detailed information on the progress or delay of the ongoing assessed activities. It is an oversight of the activity's implementation stage., 2. to watch closely for purposes of control, surveillance, etc.; keep track of; check continually:, a device or arrangement for observing, detecting, or recording the operation of a machine or system, especially an automatic control system. |
Monocrystalline Silicon + | 1. Single crystal wafer cells cut from cylindrical ingots. Produced made using the Czochralski process type of solar panels that our company uses., 2. Monocrystalline silicon (or "single-crystal silicon", "single-crystal Si", "mono c-Si", or just mono-Si) is the base material for silicon chips used in virtually all electronic equipment today. Mono-Si also serves as photovoltaic, light-absorbing material in the manufacture of solar cells. |
Multijunction Solar Cell + | 0. A multijunction solar cell is a special type of solar cells. The multijunction solar cells can be found in two configurations: in parallel or in series/tandem . As for thin-film solar cells with heterojunctions, for enhanced performances all layers should have similar crystalline structures/lattice constants. Otherwise, the discontinuities in the lattice constants lead to defects or dislocations at the interface, which are preferred recombination sites., 1. are solar cells with multiple p–n junctions made of different semiconductor materials. Each material's p-n junction will produce electric current in response to different wavelengths of light. |
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Nonlinear + | In mathematics and physical sciences, a nonlinear system is a system in which the change of the output is not proportional to the change of the input. |
Normal operating cell Temperature + | 2.. The Nominal Operating Cell Temperature (NOCT) is defined as the temperature reached by open circuited cells in a module under the conditions as listed below:, Irradiance on cell surface = 800 W/m2, Air Temperature = 20°C, Wind Velocity = 1 m/s, Mounting = open back side. |
Norminal Operating Cell Temperature + | 1. A standard for testing and sorting of photovoltaik modules focused on the temperature and irradiation data, given by the International Electrotechnical Commission (IEC). By using this standard a comparison of the modules will be more accurately. These test conditions are: Air Mass 1.5g,Ambient temperature 20°C and irradiation of 800 W/m²., 2. Normal Operating Cell Temperature (NOCT) is a measurement referring to the operational conditions of solar cells, defined as the temperature reached by open circuited cells in a module., Test conditions are defined as 800W/ m² irradiance, 20°C ambient temperature and wind speed of 1m/ s. |
Nuclear Energy + | Nuclear power is a generic term describing the use of nuclear reactions that release nuclear energy to generate heat, which is subsequently used in steam turbines to produce electricity in a nuclear power plant. |
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Objective function + | Mathematical function of system variables (e.g. costs, CO2-emission,) whose value is to be optimized. While optimizing, the solver searches system variables that lead to an optimal the objective function value (maximum or minimum). |