SYSTEM FOR OPERATION OF PHOTOVOLTAIC POWER PLANT AND DC POWER COLLECTION WITHIN

摘要

A system is disclosed for extracting a medium DC voltage from a plurality of PV modules arranged in an array and supplying the medium DC voltage to inverters located outside the array near a point of interconnection with a utility grid.

主权项

1. A photovoltaic power system comprising:
an array of photovoltaic modules including a plurality of photovoltaic modules providing a DC voltage output; a DC/DC converter connected to the plurality of photovoltaic modules for increasing the DC output voltage from the plurality of modules to a higher level DC output voltage and for controlling the higher level DC output voltage, current and/or power; a substation provided at a location adjacent a point of interconnection to a utility grid, the substation comprising a DC/AC inverter; a DC bus for receiving the controlled higher level DC output voltage from the DC/DC converter and applying it to the DC/AC inverter; and, a plant controller for controlling the DC/AC inverter and the DC/DC converter to manage voltage, current and power on the DC bus.