1. Power Electronics and PWM Rectifier
  2. Multi-pulse rectifier

Multi-pulse rectifier

Submitted by tushar pramanick on Sun, 07/27/2014 - 21:02
Share icon

1.4.3 Multi-pulse rectifier.

The other already power electronics techniques is use of multi-pulse rectifiers. Although easy to implement, possess several disadvantages such as: bulky and heavy transformer, increased voltage drop, and increased harmonic currents at non-symmetrical load or line voltages.

  • 208 views
Tags

Related Items

BookPage

Rectifiers, their advantages, and disadvantages

Power electronics in broader aspect actually controls the flow of power to make it suitable to be used by diverse type of instruments and appliances. The ability to control the flow of power is derived from using solid state switches along with their controllers.
pwm rectifire

PWM Rectifier

The most interesting reduction technique of current harmonic is a PWM (active) rectifier (Fig. 1.3). Two types of PWM converters, with a voltage source output (Fig. 1.4) and a current source output (Fig. 1.5) can be used.
pwm rectifire

Active PWM filter

An alternative to the passive filter is use of the active PWM filter (AF), which displays better dynamics and controls the harmonic and fundamental currents. Active filters are mainly divided into two different types..
BookPage

Mixing single and three phase diode rectifier

1.4.2 Mixing single and three phase diode rectifier

BookPage

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) ].