Multiple AC Input-Single DC Output Converter and Inverter Controller and Inverter System Using Same

摘要

The present invention relates to a multi AC input-single DC output converter, and an inverter control device and an inverter system using the same. According to one embodiment of the present invention, the inverter system comprises: a plurality of lamps; a sensor which senses more than one of the lamp currents and lamp driving voltages for the plurality of lamps, and outputs a plurality of AC signals for more than one of the lamp currents and the lamp driving voltages; an inverter control device which converts the plurality of AC signals into a single DC signal which is one DC signal even if a plurality of AC signals are inputted, and outputs an inverter control signal for controlling more than one of the lamp currents and the lamp driving voltages by using the converted single DC signal; and an inverter which supplies power to the plurality of lamps on the basis of the inverter control signal. According to the embodiment of the inverter system using a zero voltage drop multi AC input-single DC output converter, the one inverter system is capable of precisely controlling the lamp currents irrespective of a voltage drop between the input and output voltages or mass production of semiconductor devices or the change of a voltage drop caused by a temperature change.