Solar power conversion system

摘要

A power conversion system (10) for converting power from a plurality of solar panels. The system (10) comprises a plurality of panel modules (14) each having an input (16) and an output (17) and being connected in series. Each panel module (14) is connected to at least one solar panel (12) that supplies power to the panel module (14). Voltage control circuitry is provided within each of the panel modules (14) to vary the voltage supplied between the input (16) and the output (17) between a maximum module voltage and a minimum module voltage. A control unit (29) in communication with the voltage control circuitry of each of the panel modules varies the voltage supplied across the input (16) and output (17) of each of the panel modules (14) such that the total voltage across the series connected panel modules (14) forms an AC signal or a rectified version of an AC signal.

主权项

1. A power conversion system for converting power from a plurality of solar panels, the system comprising:
a plurality of modules each having an input, an output and a storage device and being connected in series, one or more of said modules comprising panel modules wherein each panel module is connected to at least one solar panel that supplies power to the storage device within the panel module; voltage control circuitry provided within each of the modules to vary a voltage supplied between the input and the output by the storage device between a maximum panel module voltage and a minimum panel module voltage; and a control unit in communication with the voltage control circuitry of each of the panel modules such that the control unit varies a voltage supplied across the input and output of each of the panel modules such that the total voltage across the series connected panel modules forms an AC signal or a rectified version of an AC signal, wherein at least one of the modules includes a voltage smoothing function by controlling the voltage provided by the storage device to apply a voltage between the input and the output of the module between said maximum and minimum panel module voltages such that the total voltage across the series connected modules more closely approximates a mains signal.