Amplitude control

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With increasing power consumption of the load, the amplitude of the mains current increases.

The amplitude control (also called amplitude control) is used to control the power of electrical consumers that are operated with alternating voltages . Typical applications are the heating controls of industrial high-temperature furnaces.

functionality

The shape of the sine is not changed.

In contrast to the conventional phase control or full wave control , only the amplitude of the sinusoidal mains current is changed with the amplitude control . The level of the amplitude depends only on the power drawn. The shape of the sine is not changed.

Due to the fact that the voltage and current are in phase, only active power is drawn with the amplitude control. As a result, the current consumption on the network side is significantly reduced compared to the current consumption with phase control.

advantages

The continuous flow of current leads to a gentle operation of the heating elements used and thus to a considerable extension of the service life. Doubling is possible depending on the ambient conditions.

The principle reduces the surface load on the heating elements, especially in the border areas.

The amplitude control eliminates the flicker effects and harmonics known from thyristor  controllers so that the standard specifications according to EN 61000-3-2 and EN 61000-3-3 are complied with.

Reactive power compensation is not necessary and there are no costs for reactive current.

Areas of application

Sine controller or IGBT controller for power control of:

See also

literature