IEEE standards On line current and voltage Harmonic

Reduction of harmonic content in line current to a few percent allows avoiding most of the mentioned problems. Restrictions on current and voltage harmonics maintained in many countries through IEEE 519-1992 in the USA and IEC 61000-3-2/IEC 61000-3-4 in Europe standards, are associated with the popular idea of clean power.

3 views

Traditional harmonic reduction technique

The traditional method of current harmonic reduction involves passive filters LC, parallel-connected to the grid. Filters are usually constructed as series-connected legs of capacitors and chokes [the number of legs depends on number of filtered harmonics (5th, 7th, 11th, 13th) ].

Different harmonic reduction Technique

Many harmonic reduction methods exist. These techniques based on passive components, mixing single and three-phase diode rectifiers, and power electronics techniques as: multi-pulse rectifiers, active filters and PWM rectifiers (Fig. 1.1). They can be generally divided as:

List of Symbols of Power Electronics

List of Symbols used in Power Electronics books. Average value of the output DC voltage., Average value of the output DC current., Output dc power.,Output capacitor. The root mean square (rms) value of the ac voltage., The rms value of the ac current. Efficiency ( or Rectification ratio) of a rectifier.

Introduction to power electronics

In recent times, energy conservation is one of the most popular issues through the world. Lots of debates and discussions are taking place as to how to save energy. One of the best meaningful solutions to the ever increasing energy crisis is to improve energy utilization efficiency...

Power Electronics

Power electronics integrates the use of three areas of specialization in engineering, namely, Electronics, Power, and Control. It deals with the use of electronic for the conversion and control of ...