Method and system to convert direct current (DC) to alternating current (AC) using a photovoltaic inverter

摘要

A method to increase photovoltaic (PV) inverter (10) efficiency by disabling a DC-DC Boost includes: applying a DC power generated by a PV array (12) to the PV inverter; boosting (26, 118) the DC power from the PV array from a predetermined voltage level to a predetermine DC link voltage, wherein the PV array is regulated by the boosting to output a voltage at the predetermined voltage level; converting (122) the boosted DC power to AC power, and disabling (150) the boost of the power generated by the PV array after the array has a predetermined voltage level at least as great as the DC link voltage.