The power transmitted from the power plant to the power stations, from power stations to the industries and from the industries to the machine results in large power losses due to the inductive loads. The pare inductive loads results in lagging power factor white the pure capacitive load results in leading power factor and the pure resistive load do not have any effect on power factor. Maximum motors offer inductive load thus increasing the power losses.
Watt=Voltage x Current x Power Factor, Power Factor = Cos? Where?
Is the angle between voltage wave & Current wave called the phase angle?
Smaller the phase angle, smaller will be the power losses. To improve the power factor, capacitors are installed in parallel with the main supply that offer leading power factor, and thus neutralize effect of lagging power factor due to inductive .
Harmonics Concept and Solution
Today every Machine is electronic controlled. All the electronic circuits run on SMPS that convert utility AC voltage to regulated low voltage DC for internal electronics. These non-linear power supplies draw current in high amplitude short pulses.
These current pulses create significant distortion in the electrical current and voltage shape. This is referred to as harmonic distortion and is measure in total harmonic distortion (THD)/ Other equipments corrected to the same supply are also affected by these harmonics to remove these harmonics in the system.
EPCS Switchgear is a fast growing Electrical & Mechanical Engineering Company in the field of manufacturing. installation, testing & commissioning of standard & custom built Electrical Switchgear/Sub Station equipment.