You searched for: “power
power
Converting energy from one form (fuel) into another form (movement).
This entry is located in the following unit: Automobile or Related Car Terms (page 5)
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A unit related to: “power
(A suffix forming nouns meaning: quality or condition: partnership; act, power, or skill: workmanship; relation between: friendship; office, position, or occupation: governorship; number: readership)
(solar electricity technical terms applying to electricity, power generation, concentrating solar power, or CSP, solar heating, solar lighting, and solar electricity)
(engineering is the technical science in which properties of matter and the sources of power in nature are made useful to people; such as, in structures, devices, machines, and products)
Word Entries containing the term: “power
current at maximum power; Imp
The current at which maximum power is available from a module.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 5)
distributed power
Generic term for any power supply located near the point where the power is used. Opposite of central power. See stand-alone systems.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 7)
hydropower, hydroelectric power
The use of flowing water to produce electrical energy.

History of Hydropower

People have been harnessing water to perform work for thousands of years. The Greeks used water wheels for grinding wheat into flour more than 2,000 years ago.

Besides grinding flour, the power of water was used to saw wood and power textile mills and manufacturing plants.

For more than a century, the technology for using falling water to create hydroelectricity has existed. The evolution of the modern hydropower turbine began in the mid-1700s when a French hydraulic and military engineer, Bernard Forest de Bélidor wrote Architecture Hydraulique. In this four volume work, he described using a vertical-axis versus a horizontal-axis machine.

During the 1700s and 1800s, water turbine development continued. In 1880, a brush arc light dynamo driven by a water turbine was used to provide theater and storefront lighting in Grand Rapids, Michigan; and in 1881, a brush dynamo connected to a turbine in a flour mill provided street lighting at Niagara Falls, New York. These two projects used direct-current technology.

Alternating current is used today. That breakthrough came when the electric generator was coupled to the turbine, which resulted in the world's, and the United States', first hydroelectric plant located in Appleton, Wisconsin, in 1882.

—Compiled from information located in the
"Technologies", "History of Hydropower";
U.S. Department of Energy.
This entry is located in the following unit: Energy Sources and Related Information + (page 2)
maximum power point tracker; MPPT
Means of a power conditioning unit that automatically operates the photovoltaic generator at its maximum power point under all conditions.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 13)
maximum power point; MPP
The point on the current-voltage (I-V) curve of a module under illumination, where the product of current and voltage is maximum.

For a typical silicon cell, this is at about 0.45 volts.

This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 13)
maximum power tracking
Operating a photovoltaic array at the peak power point of the array's I-V curve where maximum power is obtained. Also called "peak power tracking".
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 13)
peak power current
Amperes produced by a photovoltaic module or array operating at the voltage of the I-V curve that will produce maximum power from the module.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 15)
peak power point
Operating point of the I-V (current-voltage) curve for a solar cell or photovoltaic module where the product of the current value times the voltage value is a maximum.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 15)
power conditioning
The process of modifying the characteristics of electrical power; for example, inverting direct current to alternating current.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 17)
power conditioning equipment
Electrical equipment, or power electronics, used to convert power from a photovoltaic array into a form suitable for subsequent use.

A collective term for inverter, converter, battery charge regulator, and blocking diode.

This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 17)
power conversion efficiency
The ratio of output power to input power of the inverter.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 17)
power density
The ratio of the power available from a battery to its mass (W/kg) or volume (W/l).
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 17)
power factor; PF
The ratio of actual power being used in a circuit, expressed in watts or kilowatts, to the power that is apparently being drawn from a power source, expressed in volt-amperes or kilovolt-amperes.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 17)
rated power
Rated power of the inverter; however, some units can not produce rated power continuously.

See duty rating for additional information.

This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 18)
reactive power
The sine of the phase angle between the current and voltage waveforms in an alternating current system.

See power factor for additional information.

This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 18)
resolving power
The ability of a telescope to separate two closely spaced sources of radiation; such as, stars.
This entry is located in the following unit: Astronomy and related astronomical terms (page 22)
satellite power system; SPS
Concept for providing large amounts of electricity for use on the earth from one or more satellites in geosynchronous earth orbit.

A very large array of solar cells on each satellite would provide electricity, which would be converted to microwave energy and beamed to a receiving antenna on the ground. There, it would be reconverted into electricity and distributed the same as any other centrally generated power, through a grid.

uninterruptible power supply
The designation of a power supply providing continuous uninterruptible service.

The uninterruptible power supply will contain batteries.

This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 23)
voltage at maximum power; Vmp
The voltage at which maximum power is available from a photovoltaic module.
This entry is located in the following unit: Photovoltaic Conversion Efficiency Terms + (page 23)