Posts Tagged ‘active power’

AC Power (back to basics)

March 20th, 2013 | 1 Comment | Posted in Power quality
Tags: , ,

AC power in any electric circuit is the rate of flow of energy at a specific part of that electric circuit. As we all know, the electric energy flow from the generation side toward the consumer load side. But some part of this energy is bounce back to generation side and some part is completely utilized by the load.

Electric power energy that oscillates between source and load is known as reactive power while completely utilized electrical power energy is known as real power. Both the reactive power and real or active or true power are related with the apparent or total power through the following figure.

AC Power 1

From the figure, it can be deduced that;

(Total Power)² = (True Power)² + (Reactive Power)²

Or (kVA)² = (kW)² + (kVAr)²


Power Factor In Depth

February 7th, 2013 | Make a comment | Posted in Power quality
Tags: , ,

In this article we shall have detailed discussion on something that is very common for Electrical Engineers and you must know about it “Power Factor”. Here we will deeply examine what we actually mean by the term Power Factor and why it is so important in our field.

We will have a look on the following:

  • Definition of Power Factor (simple)
  • Leading and Lagging Power Factor
  • Active Power and Reactive Power
  • Why so IMPORTANT
  • Distortion Factor and Displacement Factor


4/8 – Electrical equipment: power harmonics, power factor

November 30th, 2009 | 11 Comments | Posted in Power quality
Tags: , , , ,

How Power Factor and Harmonics relate to Energy Efficiency?

In an AC distribution system, the maximum active power is transmitted to a load when voltage and current are undistorted and in phase.

Harmonics Power factor (more…)

2/8 – Electrical equipment: power factor

November 9th, 2009 | 9 Comments | Posted in Power quality
Tags: , ,

What is “Power Factor”?

power factor definition

power factor definition

The definition of “Power Factor” relies on the definitions of “active power” and “apparent power”.


1/8 – Electrical equipment: power harmonics, power factor

October 26th, 2009 | 9 Comments | Posted in Energy Efficiency - kvar, Power quality
Tags: , , ,
Re active energy and harmonics explain with a car

Re active energy and power harmonics explained with a car

How to understand harmonics & re active energy

Are you a driver? I am sure yes, therefore you will understand power harmonics right away

Imagine a straight road, flat, a perfectly smooth surface, a constant speed. Your car works well, consumes as little as possible, and can run indefinitely.
It’s like an electrical grid with a constant power without harmonics.


Electrical engineering Community is proudly powered by WordPress
Entries (RSS) and Comments (RSS) and license Creative Commons License