System and Method for a Single Stage Power Conversion System

摘要

A power conversion system includes a photovoltaic source (18) to generate direct current (DC) power; a direct current (DC) to an alternating current (AC) single stage inverter (20) to convert the direct current (DC) power from the photovoltaic source to alternating current (AC) power for delivery to a power grid (14), and a load balancing unit (12) coupled to the single stage inverter. The power conversion system also includes a controller (26) configured to determine a maximum power point for the power conversion system, regulate an output voltage of the single stage inverter, compute a power balance difference between a power demand from the power grid and an output power of the single stage inverter obtainable at the maximum power point and control in real-time the load balancing unit based on the power balance difference.