전문 용어(English-C)

A B C D E F G H I J K L M N O P Q R S T U V W Z 
c-Si Crystalline silicon. Includes both p-Si (poly/multi-c-Si) and mc-Si (mono-c-Si/single-grain).
CAGR Compound Annual Growth Rate. Commonly used to show average compounded growth rates over a range of years.
Capacitor An electronic component used for the temporary storage of electricity, as well for removing unwanted noise in circuits. A capacitor will block Direct Current (DC) but will pass Alternating Current (AC).
Capacity The (ramped) manufacturing capacity is the maximum volume (of c-Si or TF cells) that could be produced at a given time. It takes into account the phased installation of capacity, only including it when capable of mass production. Furthermore it is based on a company-by-company forecast analysis of in-house manufacturing capacity.
Capacity See battery capacity.
Capacity Utilization The ratio of global production to the global capacity in the year in review.
CapEx Capital Expenditure. Broadly includes all costs relating to a fab build-out, including plant and infrastructure, in addition to the tooling costs (equipment spending).
Captive electrolyte battery A battery with an immobilized electrolyte (gelled or absorbed in a material).
Cathode The negative electrode in an electrochemical cell. Also, the negative terminal of a diode.
Cathodic protection A method of preventing oxidation (rusting) of exposed metal structures, such as bridges and pipelines, by imposing between the structure and the ground a small electrical voltage that opposes the flow of electrons and that is greater than the voltage present during oxidation.
CdTe Cadmium telluride.
Cell The basic unit of a PV module or battery. It contains the necessary materials, such as electrodes and electrolyte in a battery, to produce electricity.
Cell efficiency The ratio of the electrical energy produced by a photovoltaic cell (under full sun conditions or 1 kW/m2) to the energy from sunlight falling upon the photovoltaic cell.
Cell junction The area of immediate contact between two layers (positive and negative) of a photovoltaic cell. The junction lies at the center of the cell barrier or depletion zone.
Charge The process of inputting electrical energy to a battery.
Charge controller A component that controls the flow of current to and from the battery subsystem to protect the batteries from overcharge and over discharge. Essential for ensuring that batteries obtain maximum state of charge and longest life. The charge controller may also monitor system performance and provide system protection. Charge controllers are also sometimes called regulators.
Charge factor A number corresponding to the time (in hours) for which a battery can be charged at a constant current without damaging it. Usually expressed as a function of battery capacity, e.g. C/10 indicates a charge factor of 10 hours. Related to charge rate.
Charge rate A measure of the current used to charge a battery as a proportion of its capacity.
Circuit A continuous system of conductors providing a path for electricity.
Circuit breaker A circuit breaker acts like an automatic switch that can shut the power off when it senses too much current.
CIS Copper indium di(selenide).
Cloud enhancement The increase in solar intensity due to reflected light from nearby clouds.
Cogeneration The joint production of electricity and useful heat at a single facility, resulting in more efficient use of the thermal energy.
Concentrator A photovoltaic device that uses optical elements such as mirrors or lenses to increase the amount of light incident on a solar PV cell. Concentrator arrays track the sun and use only direct sunlight since the diffuse portion cannot be focused. They work best in clear sky locations. Efficiency is increased, but cell life may be reduced because operating temperatures are higher.
Conductor A material used to transfer, or conduct, electricity, often in the form of wires.
Conduit A pipe or elongated box used to house and protect electrical cables.
Conversion efficiency The ratio of the electrical energy generated by a solar PV cell to the solar energy impacting the cell.
Cross-flow turbine A turbine where the flow of water is at right angles to the axis of rotation of the turbine.
Crystalline silicon A type of PV cell material made from a single crystal or polycrystalline ingot of silicon.
Current Current is the flow of electric charge in a conductor between two points having a difference in electrical potential (voltage) and is measured in Amps.
Current at maximum power (Imp) The current at which maximum power is available from a module. [UL 1703]
Cut-off voltage The voltage levels at which the charge controller (regulator) disconnects the PV array from the battery, or the load from the battery.
Cycle The discharge and recharge of a battery.
Cycle life Number of charge-discharge cycles a battery can perform under specified conditions before it fails to meet its specified performance (e.g. capacity decreases to 80% of nominal capacity).
CT, PT(Current Transformer, Potential Transformer) 전력계통을 운영하기 위해서는 여러 가지 목적으로 전류와 전압을 계측하여야 하며 전력계통 및 설비보호를 위한 장치에도 전류와 전압의 측정값이 필요하다. (입력요소로 사용할 필요가 있다). 그러나 전력계통에 흐르는 대전류, 고전압을 직접 계측하거나 보호장치에 입력할 수 없기 때문에 적당한 값으로 전류와 전압을 바꾸어 주는 장치를 사용하여야 하는데 이러한 장치의 일종을 CT와 PT라고 한다. 큰 전류를 작은 전류로 바꾸어 주는 것을 CT 또는 계기용 변류기라고 하며, 높은 전압을 낮은 전압으로 바꾸어주는 것을 PT 또는 계기용 변압기라고 한다.
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