LED lighting device with modelling device for modelling a voltage profile

摘要

An LED lighting device for supplying a main voltage by an AC power supply is provided. The device has a rectifier for producing a rectified AC voltage from the main voltage, an LED light unit having multiple of LEDs and a circuit arrangement, and a control device for controlling the circuit arrangement. The circuit arrangement switches the LEDs to different circuit states, in which the LED light unit has different forward voltages. The control device controls the circuit arrangement, in such a way that the forward voltage of the LED light unit is adjusted to the voltage profile of the rectified AC voltage. The device also has a modelling device for modelling a modelled voltage profile. The control device controls the circuit states based on the modelled voltage profile. The modelled voltage profile is modelled based on measured variables for describing the real voltage profile of the main voltage.

主权项

1. An LED lighting device, wherein the LED lighting device is configured to be supplied with a main voltage by an AC power supply, comprising:
a rectifier device for producing a rectified AC voltage from the main voltage, an LED light unit, wherein the LED light unit comprises a plurality of LEDs and a circuit arrangement, wherein the circuit arrangement is configured to switch the LEDs to different circuit states, wherein the LED light unit has different forward voltages in the different circuit states, a control device for controlling the circuit arrangement, wherein the control device is configured to control the circuit arrangement in such a way that the forward voltage of the LED light unit is adjusted to the voltage profile of the rectified AC voltage, and a modelling device for modelling a modelled voltage profile, wherein the control device is configured to control the circuit states based on the modelled voltage profile, wherein the modelled voltage profile is modelled based on measured variables for describing the real voltage profile of the main voltage.