Surf Wiki
Save to docs
general/electric-power

From Surf Wiki (app.surf) — the open knowledge base

Amplitude adjusting

Amplitude adjusting
The amplitude of the supply current rises with increasing power consumption of the load.

The Amplitude adjusting (also referred to as Amplitude control) enables the power control of electric loads, which are operated with AC voltage. A representative application is the heating control of industrial high temperature furnaces.

Functionality

The sinus oscillation does not change.

Contrary to the conventional phase angle or full wave control, during amplitude control only the Amplitude of the sinusoidal supply current is changed. The level of the amplitude only depends on the consumed power. The sinus oscillation does not change.

Because current and voltage are in phase, only real power is taken from the mains for amplitude control. So the current consumption from the mains is considerably lower than the current consumption in case of phase-angle operation.

Advantages

The continuous current flow causes a mild operation of the used heater elements and consequently significant longer lifetimes are realized. Depending on the ambient conditions the lifetime can be twice as long.

Especially the surface damage of the heater elements at thresholds can be reduced.

The amplitude control eliminates the flicker effects and harmonics, as usual for Thyristor units, so that the standard specifications according to EN 61000-3-2 and EN 61000-3-3 are observed.

Reactive power compensation is not required, reducing equipment costs.

Applications

Sinus units or IGBT power converters for power control of:

  • Resistance heatings
  • Silicon carbide (SC) - heater elements
  • Molybdenum disilicide (MoSi2) - heater elements
  • Infralight radiators

Literature

  • Manfred Schleicher, Winfried Schneider: Electronic power units. , (Download as PDF)
Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

electric-power
Want to explore this topic further?

Ask Mako anything about Amplitude adjusting — get instant answers, deeper analysis, and related topics.

Research with Mako

Free with your Surf account

Content sourced from Wikipedia, available under CC BY-SA 4.0.

This content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.

Report