Patent ID: 8995155
Filing Date: 2015-03-31
Classification: H02J,H02M,Y10S

Abstract:
1. A photovoltaic power conditioning system comprising: an isolated DC/DC converter that receives a DC voltage from a solar cell through a parallel connection structure and converts the DC voltage into another DC voltage and then outputs the converted DC voltage through a series connection structure; a DC/AC inverter that converts the DC voltage output from the isolated DC/DC converter into an AC voltage; and a sine filter that performs sine filtering on the AC voltage output from the DC/AC inverter and outputs the filtered AC voltage, wherein the isolated DC/DC converter receives positive and negative inputs of a DC input portion of the system and outputs a combination of a negative terminal output of the isolated DC/DC converter and the positive input of the DC input portion through a positive output terminal of the isolated DC/DC converter, wherein the negative terminal output of the isolated DC/DC converter is directly connected to the positive input of the DC input portion, and thus the negative terminal output of the isolated DC/DC converter has the same voltage as the positive input of the DC input portion, wherein an output of the positive output terminal of the isolated DC/DC converter is the sum of the DC voltage from the DC input and a voltage from the negative terminal output of the isolated DC/DC converter, and wherein the isolated DC/DC converter has a single DC output.