Voltage regulation
Encyclopedia
In electrical engineering
, particularly power engineering
, voltage regulation is the ability of a system to provide near constant voltage
over a wide range of load conditions.
defined at the receiving end of a transmission line as:
where
Vnl is voltage at no load and VRated is voltage at full load. A smaller value of VR is usually beneficial.
The V.R. formula could be visualized with the following; "Consider power being delivered to a load such that the voltage at the load is the load's rated voltage VRated, if then the load disappears, the voltage at the point of the load will rise to Vnl."
Sometimes, the term voltage regulation is used to describe processes by which the quantity VR is reduced, especially concerning special circuits and devices for this purpose, voltage regulators. Voltage regulators are an important part of power systems and power supplies
.
Electrical engineering
Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics and electromagnetism. The field first became an identifiable occupation in the late nineteenth century after commercialization of the electric telegraph and electrical...
, particularly power engineering
Power engineering
Power engineering, also called power systems engineering, is a subfield of engineering that deals with the generation, transmission and distribution of electric power as well as the electrical devices connected to such systems including generators, motors and transformers...
, voltage regulation is the ability of a system to provide near constant voltage
Voltage
Voltage, otherwise known as electrical potential difference or electric tension is the difference in electric potential between two points — or the difference in electric potential energy per unit charge between two points...
over a wide range of load conditions.
Electrical power systems
In electrical power systems it is a dimensionless quantityDimensionless quantity
In dimensional analysis, a dimensionless quantity or quantity of dimension one is a quantity without an associated physical dimension. It is thus a "pure" number, and as such always has a dimension of 1. Dimensionless quantities are widely used in mathematics, physics, engineering, economics, and...
defined at the receiving end of a transmission line as:
where
Vnl is voltage at no load and VRated is voltage at full load. A smaller value of VR is usually beneficial.
The V.R. formula could be visualized with the following; "Consider power being delivered to a load such that the voltage at the load is the load's rated voltage VRated, if then the load disappears, the voltage at the point of the load will rise to Vnl."
Electronic power supply parameters
The quality of a system's voltage regulation is described by three main parameters:| Parameter | ST | Measure of the ability to maintain a constant output voltage, regardless of variations in temperature of electrical components within the system, especially semiconductor based devices. |
|---|
Sometimes, the term voltage regulation is used to describe processes by which the quantity VR is reduced, especially concerning special circuits and devices for this purpose, voltage regulators. Voltage regulators are an important part of power systems and power supplies
Power supply
A power supply is a device that supplies electrical energy to one or more electric loads. The term is most commonly applied to devices that convert one form of electrical energy to another, though it may also refer to devices that convert another form of energy to electrical energy...
.