10 relations: Alpha–beta transformation, Alternating current, Direct current, Electrical engineering, Power inverter, Robert H. Park, Symmetrical components, Three-phase electric power, Transformation (function), Vector control (motor).

## Alpha–beta transformation

In electrical engineering, the alpha-beta (\alpha\beta\gamma) transformation (also known as the Clarke transformation) is a mathematical transformation employed to simplify the analysis of three-phase circuits.

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## Alternating current

Alternating current (AC), is an electric current in which the flow of electric charge periodically reverses direction, whereas in direct current (DC, also dc), the flow of electric charge is only in one direction.

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## Direct current

Direct current (DC) is the unidirectional flow of electric charge.

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## Electrical engineering

Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics, and electromagnetism.

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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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## Robert H. Park

Robert H. Park (March 15, 1902 – February 18, 1994) was an American electrical engineer and inventor, best known for the Park's transformation, used to simplify the analysis of three-phase electric circuits.

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## Symmetrical components

In electrical engineering, the method of symmetrical components is used to simplify analysis of unbalanced three-phase power systems under both normal and abnormal conditions.

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## Three-phase electric power

Three-phase electric power is a common method of alternating-current electric power generation, transmission, and distribution.

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## Transformation (function)

In mathematics, particularly in semigroup theory, a transformation is any function f mapping a set X to itself, i.e. f:X→X.

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## Vector control (motor)

Vector control, also called field-oriented control (FOC), is a variable-frequency drive (VFD) control method where the stator currents of a three-phase AC electric motor are identified as two orthogonal components that can be visualized with a vector.

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