OUTPUT WAVE QUALITY MONITORING SYSTEM FOR SOLAR POWER INVERTER AND METHOD THEREFOR

摘要

PURPOSE: An output quality monitoring device of a solar light power generation inverter and a method thereof are provided to monitor instantaneous voltage rise, voltage noise, voltage drop, and instantaneous power failure of an output voltage and an output current, thereby preventing performance lowering and failure of a solar light power generation system. CONSTITUTION: An A/D converter(400) converts an output voltage and an output current into digital data by each phase of grid output. A controller(410) receives voltage and current data which are provided from the A/D converter and stores the voltage and current data in a work memory(430). A clock timer(420) supplies a clock signal to the A/D converter by a conversion start control signal which is supplied from the controller. A display device(450) displays a processing result from the controller and generates an alarm.