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In 1883 the Ganz Works invented the constant voltage generator [12] that could produce a stated output voltage, regardless of the value of the actual load. [13] The introduction of transformers in the mid-1880s led to the widespread use of alternating current and the use of alternators needed to produce it. [14]
The usual waveform of alternating current in most electric power circuits is a sine wave, whose positive half-period corresponds with positive direction of the current and vice versa (the full period is called a cycle). "Alternating current" most commonly refers to power distribution, but a wide range of other applications are technically ...
TCRs produce large amounts of harmonics and require Filter Banks to prevent adverse effects to the system. Another type of shunt compensation is the Static Synchronous Compensator or STATCOM . Power electronics are combined in series with a reactor to form a Voltage-Sourced Converter (VSC), which when connected to an AC system forms a STATCOM ...
Generation is the conversion of some primary energy source into electric power suitable for commercial use on an electrical grid. Most commercial electric power is produced by rotating electrical machines, "generators", which move conductors through a magnetic field to produce electric current. The generator is rotated by some other prime mover ...
Due to mechanical and electrical properties, it is more efficient to first produce alternating current and then immediately convert it to direct current. By regulating the current sent to the alternator's rotor and thus the strength of the magnetic field, a stable voltage can be produced over a wider range of engine speeds.
The first machines to produce electric current from magnetism used permanent magnets; the dynamo machine, which used an electromagnet to produce the magnetic field, was developed later. The machine built by Hippolyte Pixii in 1832 used a rotating permanent magnet to induce alternating voltage in two fixed coils. [2]
A fixed asset, often referred to as a tangible asset or property, plant, and equipment (PP&E), is a long-term asset that holds value over time and can be used to generate income.
In a simple alternating current (AC) circuit consisting of a source and a linear time-invariant load, both the current and voltage are sinusoidal at the same frequency. [3] If the load is purely resistive, the two quantities reverse their polarity at the same time. Hence, the instantaneous power, given by the product of voltage and current, is ...