SOLAR LIGHT SYSTEM CONNECTED TYPE SINGLE-PHASE INVERTER CIRCUIT, CAPABLE OF REDUCING PULSE-WIDTH-MODULATION SWITCHING NOISES

摘要

PURPOSE: A solar light system connected type single-phase inverter circuit is provided to prevent the generation of a pulse-width-modulation(PWM) switching noises by forming the closed loop of the anodic terminal or the cathodic terminal of a direct current capacitor, the output terminal of an inverter switch, and an LC filter using two filter capacitors.;CONSTITUTION: A direct current capacitor(Cd) inverter switches, and an LC filter form a closed-loop through two filter capacitors(C). Filter capacitors functioning as power source applies a noise voltage generated from PWM switching to an inductor. The filter capacitors reduce PWM switching noises by blocking a switching noise voltage emitted to the outside of the closed circuit.;COPYRIGHT KIPO 2011