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Power optimizer
A power optimizer is a DC-to-DC converter fitted to an individual photovoltaic module that tracks that module's maximum power point before power reaches a central string inverter.
Power outage
A power outage, also called a power failure or power cut, is the loss of electric service, ranging from brief interruptions to blackouts lasting days or weeks.
Power over Ethernet
Power over Ethernet (PoE) is an IEEE 802.3 standard for delivering electrical power and data over the same Ethernet cable, powering devices such as IP cameras and wireless access points.
Power Pros
Power Pros, known in Japan as Jikkyō Powerful Pro Yakyū or Pawapuro, is a Konami baseball series begun in 1994, known for big-headed characters and its Success Mode.
Power purchase agreement
A power purchase agreement (PPA) is a long-term contract in which a buyer purchases electricity from a producer at an agreed price, typically for 10 to 25 years.
Power quality monitor
A power quality monitor is an instrument that analyzes voltage and current signals to detect, record, and quantify disturbances such as sags, swells, harmonics, flicker, and transients.
Power semiconductor device
A power semiconductor device, also called a power device, is a solid-state component such as a diode, thyristor, MOSFET, or IGBT that switches large currents in converters and power supplies.
Power semiconductor module
A power semiconductor module, also called a power module, is an assembly of interconnected power semiconductor devices that performs a power conversion function, typically in IGBT form.
Power station
A power station, also called a power plant, is an industrial facility that generates electricity by driving a generator with a turbine turned by steam, water, or gas.
Power steering
Power steering, also called power-assisted steering, is any system that reduces the effort of turning a vehicle's wheels. It evolved from 1950s hydraulic pumps to today's electric motors.
Power strip
A power strip is a block of electrical sockets on a cord that lets several devices run from one wall outlet, often with a circuit breaker or surge protection.
Power supply
A power supply, also known as an electronic power supply, is the unit converting AC mains electricity into the regulated DC rails computer components use, in ATX, SFX, or redundant server formats.
Power Supply Adjustor (Arizona)
The Power Supply Adjustor is a pass-through charge on Arizona Public Service electric bills that recovers fuel and purchased power costs, with rates reviewed yearly by the Arizona Corporation Commission.
Power supply unit (computer)
A power supply unit (PSU), also called a computer power supply, converts AC from a wall outlet into the regulated DC voltages, principally +3.3, +5, and +12 V, that a computer needs.
Power symbol
The power symbol, also known as the on off symbol, is the broken circle with a line (⏻) standardized in 1973 as IEC 60417-5009, officially meaning standby.
Power synchronization control
Power synchronization control is a grid-forming control method for voltage-source converters that synchronizes to the AC grid through a power loop instead of a phase-locked loop.
Power system stabilizer
A power system stabilizer (PSS) is a supplementary controller on a synchronous generator's excitation system that damps low-frequency electromechanical rotor oscillations by modulating field voltage, extending power transfer capability.
Power system state estimation
Power system state estimation is a computational method that estimates voltage magnitudes and phase angles at every bus of an electric network from redundant, noisy power and voltage measurements.
Power take-off
A power take-off (PTO) is a splined output shaft, usually at the rear of a tractor or truck gearbox, that transfers engine power to driven implements.
Power tool
A power tool is a machine driven by an energy source such as an electric motor, compressed air, or gasoline, used for work like drilling, cutting, and grinding.
Power transformer
A power transformer transfers energy between AC circuits at different voltage levels, stepping voltage up for transmission and down for distribution in the power grid.
Power usage effectiveness
Power usage effectiveness (PUE) is a data center efficiency metric, defined in 2007 as total facility energy divided by IT equipment energy, with a theoretical floor of 1.0.
Power-flow study
A power-flow study, or load-flow study, computes voltages, currents, and power flows in an electrical network, checking that delivery stays within voltage and thermal limits.
Power-from-shore
Power-from-shore is the supply of onshore grid electricity to offshore oil and gas installations via subsea cables, replacing gas turbines; it is Norway's most important measure for cutting petroleum emissions.
Power-line communication
Power-line communication, also known as power-line networking or broadband over powerline, carries data signals over existing electrical power lines for smart grids, smart metering, home automation, and in-home networking.
Power-on self-test
The power-on self-test (POST), also known as BIOS POST, is the series of internal hardware checks firmware runs at power-on, before the operating system loads.
Power-to-gas
Power-to-gas (PtG) is an energy conversion technology that uses electrolysis to turn electricity into hydrogen or synthetic methane, linking the power grid with the gas grid for seasonal storage of renewables.
Power-to-X
Power-to-X (PtX, P2X) is a family of energy conversion technologies that use electricity, typically from renewable sources, to produce fuels and chemicals such as hydrogen, methane, and methanol.
POWER1
POWER1, internally known as RIOS-1 and RIOS.9, is IBM's multi-chip processor implementing the POWER architecture, powering the first RS/6000 workstations and servers announced in February 1990.
POWER8
POWER8 is a 64-bit RISC server processor from IBM, announced in 2014, with up to 12 cores and the CAPI interface for attaching hardware accelerators coherently.