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29 relations: Alternating current, Balance of system, Battery charger, Charge controller, DC-to-DC converter, Direct current, Electric power transmission, Electrical grid, Galvanic isolation, Grid-tie inverter, Islanding, Maximum power point tracking, National Electrical Code, Nominal power (photovoltaic), Off-the-grid, Phase (waves), Photovoltaic system, Photovoltaics, Power inverter, Power optimizer, Sine wave, Solar cell, Solar cell efficiency, Solar micro-inverter, Solar panel, Submersible pump, Transformer, Utility frequency, Watt.
Alternating current
Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction.
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Balance of system
The balance of system (BOS) encompasses all components of a photovoltaic system other than the photovoltaic panels.
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Battery charger
A battery charger, or recharger, is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it.
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Charge controller
A charge controller, charge regulator or battery regulator limits the rate at which electric current is added to or drawn from electric batteries.
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DC-to-DC converter
A DC-to-DC converter is an electronic circuit or electromechanical device that converts a source of direct current (DC) from one voltage level to another.
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Direct current
Direct current (DC) is the unidirectional flow of electric charge.
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Electric power transmission
Electric power transmission is the bulk movement of electrical energy from a generating site, such as a power plant, to an electrical substation.
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Electrical grid
An electrical grid is an interconnected network for delivering electricity from producers to consumers.
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Galvanic isolation
Galvanic isolation is a principle of isolating functional sections of electrical systems to prevent current flow; no direct conduction path is permitted.
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Grid-tie inverter
A grid-tie inverter converts direct current (DC) into an alternating current (AC) suitable for injecting into an electrical power grid, normally 120V RMS at 60Hz or 240V RMS at 50 Hz.
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Islanding
Islanding is the condition in which a distributed generator (DG) continues to power a location even though electrical grid power is no longer present.
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Maximum power point tracking
Maximum power point tracking (MPPT) or sometimes just power point tracking (PPT)) is a technique used commonly with wind turbines and photovoltaic (PV) solar systems to maximize power extraction under all conditions. Although solar power is mainly covered, the principle applies generally to sources with variable power: for example, optical power transmission and thermophotovoltaics. PV solar systems exist in many different configurations with regard to their relationship to inverter systems, external grids, battery banks, or other electrical loads. Regardless of the ultimate destination of the solar power, though, the central problem addressed by MPPT is that the efficiency of power transfer from the solar cell depends on both the amount of sunlight falling on the solar panels and the electrical characteristics of the load. As the amount of sunlight varies, the load characteristic that gives the highest power transfer efficiency changes, so that the efficiency of the system is optimized when the load characteristic changes to keep the power transfer at highest efficiency. This load characteristic is called the maximum power point (MPP) and MPPT is the process of finding this point and keeping the load characteristic there. Electrical circuits can be designed to present arbitrary loads to the photovoltaic cells and then convert the voltage, current, or frequency to suit other devices or systems, and MPPT solves the problem of choosing the best load to be presented to the cells in order to get the most usable power out. Solar cells have a complex relationship between temperature and total resistance that produces a non-linear output efficiency which can be analyzed based on the I-V curve. It is the purpose of the MPPT system to sample the output of the PV cells and apply the proper resistance (load) to obtain maximum power for any given environmental conditions. MPPT devices are typically integrated into an electric power converter system that provides voltage or current conversion, filtering, and regulation for driving various loads, including power grids, batteries, or motors.
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National Electrical Code
The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States.
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Nominal power (photovoltaic)
The nominal power is the nameplate capacity of photovoltaic (PV) devices, such as solar cells, panels and systems, and is determined by measuring the electric current and voltage in a circuit, while varying the resistance under precisely defined conditions.
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Off-the-grid
Off-the-grid is a system and lifestyle designed to help people function without the support of remote infrastructure, such as an electrical grid.
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Phase (waves)
Phase is the position of a point in time (an instant) on a waveform cycle.
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Photovoltaic system
A photovoltaic system, also PV system or solar power system, is a power system designed to supply usable solar power by means of photovoltaics.
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Photovoltaics
Photovoltaics (PV) is a term which covers the conversion of light into electricity using semiconducting materials that exhibit the photovoltaic effect, a phenomenon studied in physics, photochemistry, and electrochemistry.
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Power inverter
A power inverter, or inverter, is an electronic device or circuitry that changes direct current (DC) to alternating current (AC).
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Power optimizer
A power optimizer is a DC to DC converter technology developed to maximize the energy harvest from solar photovoltaic or wind turbine systems.
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Sine wave
A sine wave or sinusoid is a mathematical curve that describes a smooth periodic oscillation.
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Solar cell
A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.
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Solar cell efficiency
Solar cell efficiency refers to the portion of energy in the form of sunlight that can be converted via photovoltaics into electricity.
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Solar micro-inverter
A solar micro-inverter, or simply microinverter, is a plug-and-play device used in photovoltaics, that converts direct current (DC) generated by a single solar module to alternating current (AC).
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Solar panel
Photovoltaic solar panels absorb sunlight as a source of energy to generate electricity.
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Submersible pump
A submersible pump (or sub pump, electric submersible pump (ESP)) is a device which has a hermetically sealed motor close-coupled to the pump body.
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Transformer
A transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.
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Utility frequency
The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the nominal frequency of the oscillations of alternating current (AC) in an electric power grid transmitted from a power station to the end-user.
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Watt
The watt (symbol: W) is a unit of power.
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Distributed inverter architecture, PV inverter, Photovoltaic inverter, Pv inverter, Solar charge controller, String inverter.
References
[1] https://en.wikipedia.org/wiki/Solar_inverter
