SWITCHING SYSTEM FOR GRID-CONNECTED INVERTER ACCORDING TO OUTPUT OF RENEWALBE ENERGY MODULE

摘要

PURPOSE: A switching system for grid connected inverters according to renewable energy module output is provided to use a test port, thereby improving system efficiency. CONSTITUTION: A plurality of inverters convert DC power into AC power. A switch unit selects inverters to be used among the inverters in a system. An integrating wattmeter (300) includes a test port. A counter unit (400) counts the pulse of a currently measured electric energy. A control unit (500) adjusts the number of driving inverters using the switch unit. [Reference numerals] (10) Renewable energy module; (200) Inverter; (300) Integrating wattmeter; (400) Counter unit; (500) Control unit; (600) Switch unit; (700) MPPT management unit