Voltage regulation

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Voltage regulation

In electrical engineering

Electrical engineering

Electrical engineering, sometimes referred to as electrical and electronic engineering, is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism....
, particularly power engineering

Power engineering

Power engineering, also called power systems engineering, is a subfield of electrical engineering that deals with the electric power generation, electric power transmission and electric power distribution of electric power as well as the electrical devices connected to such systems including electric generators, electric motors and tr...
, voltage regulation is the ability of a system to provide near constant voltage

Voltage

Electrical tension is the potential difference between two points of an electrical or electronic circuit, expressed in volts. It is the measurement of the potential for an electric field to cause an electric current in an electrical conductor....
over a wide range of load conditions. It is a dimensionless quantity

Dimensionless quantity

In dimensional analysis, a dimensionless quantity is a quantity without any physical units and thus a pure number. Such a number is typically defined as a product or ratio of quantity which do have units, in such a way that all the units cancel out....
defined as: where V_nl is voltage at no load and V_fl is voltage at full load. A smaller value of VR is usually beneficial.

The quality of a system's voltage regulation is described by three main parameters:

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.

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Encyclopedia

In electrical engineering

Electrical engineering

Power engineering

Voltage

Dimensionless quantity

Parameter	Symbol	Description
Line regulation Line regulation Line regulation is the capability to maintain a constant output voltage level on the output channel of a power supply despite changes to the input voltage level....	S_v	Measure of the ability to maintain a constant output voltage, regardless of changes to the input voltage
Load regulation Load regulation Load regulation is the capability to maintain a constant voltage level on the output channel of a power supply despite changes in load ....	R_o	Measure of the ability to maintain a constant output voltage, regardless of the size of the system's load
Temperature dependence	S_T	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

Power supply is a reference to a source of electrical power. A device or system that supplies electrical or other types of energy to an output External electric load or group of loads is called a power supply unit or PSU....
.

Voltage regulation

See also