Voltage Sags & Its Causes
Voltage sags are short duration reductions in system RMS voltage magnitude between 10 % to 90%, and duration lasting typically from a few cycles to … Read more
Power Quality
Harmonic Problems and UPS Solution for Computer Installation
Computers installations small or big are susceptible to harmonics in the power lines. The advance designs of computer and peripherals make them virtually failure proof. … Read more
Harmonics Filters – Cost and Effectiveness
The main characteristic of an electrical system is its waveform which, under all operating conditions and load conditions, must always remain a pure sine wave. … Read more
Working Principle of Active Harmonic Filter
The PWM INVERTER technology is the basic building block of an Active Harmonic Filter. Active filters are new generation harmonic filters which use modern technologies … Read more
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
What is the Required Capacitor KVAR for 50 HP Motor?
The motor draws inductive current when 50 HP induction motor is run by feeding three phase AC supply. At no load running of the motor … Read more
Difference between Harmonics and Sub-Harmonics
Harmonics is generated when the equipment draws current which is non linear to the applied voltage. The elctronic devices are the non linear devices … Read more
Interharmonics in Power System
The power electronics is being widely used nowadays to improve the system efficiency,flexibility and reliability. The semiconductor devices used in power electronics are non linear … Read more
Effects of Harmonics on Transformers
The transformer does not generate harmonics.The transformer has primary and secondary winding which are inductive in nature. The inductive load draws current linearly with … Read more
What are Triplen Harmonics and where do they happen?
What are Harmonics? Any non periodical waveform has sinusoidal component and integral multiples of the sinusoidal components. The integral multiples of the sinusoidal component or … Read more