Power Quality Archives

Role of Test & Measurement in Harmonic Studies

What are Harmonic Studies? Power electronics is being used popularly in industries due to ease of operation and maintenance. It is also possible to achieve … Read more

V-I Characteristics of SCR | Modes of Operation of SCR

SCR is widely used in power electronics for controlling the large power. In this post, we will discuss V-I characteristics of the SCR and its … Read more

What is difference between AC and DC Resistance of a conductor?

What is difference between AC and DC Resistance? The AC resistance is always more than the DC resistance. Let us understand what is the difference … Read more

Harmonics Mitigation Techniques

What is Harmonics? Harmonic is a wave whose frequency is integral multiples of the fundamental frequency. The harmonics are a power quality problem that needs … Read more

What Is Voltage Unbalance?

Definition of Voltage Unbalance as per NEMA: The voltage unbalance is defined as the maximum deviation from the average of three-phase voltage or current, divided … Read more

Neutral Conductor Size Selection For Non Linear Loads

Neutral sizing for nonlinear loads: Single phase non-linear loads like personal computers, electronic ballast, and other electronic equipment, generate odd harmonics (i.e. 3rd,5th, 7th, 9th, … Read more

Impact Of Harmonics On Induction Motor

Due to simplicity in construction and ease in operation and maintenance, induction motors have become the most popular prime mover, and about 80 % of … Read more

Adverse Effects Of Harmonics On Electrical Equipment

HARMONICS CAUSES THE FOLLOWING ADVERSE EFFECTS: Overheating of transformers and rotating equipment Motors and generators can be adversely affected by the presence of harmonic voltage … Read more

True Power Factor

What is True Power Factor? The true power factor is the product of the displacement power factor and the distortion power factor. The displacement power … Read more