8-Dimer - AC-AC Vrms converter with fixed frequency

3. Technical design

Dimmer on the market are mostly designed with power electronics components. Dimmer are built with Thyristor or Triac or power up to few KW in single-phase or three-phase systems.

3.1. Single_Phase Dimmer :

  • Brand : EUROTHERM

  • Voltage : 240 V 50 Hz ;

  • Control Vdc 0 – 10 V = ;

  • Control by phase angle;

  • Current rating 16 A.

3.2. Three-Phases Dimmer

There are two types of dimmer:

Two pairs of Thyristors :

Three pair of Thyristors:

Example:

Dimmer: AOIP 3020.

  • Voltage : 400 V three-phases 50 Hz ;

  • Current rating : 25 A

  • Control by wave train, phase angle control, mixt.

  • Control Vdc (0-10V) or Keyboard

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