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US 12,119,652 B2Granted
Solar power equalization system
AssigneeE2Z Co., Ltd.
InventorsKi Taek Song, Cheol Song Lee, Jun Woo Kim
Life of this patent
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Abstract
Proposed is a solar power equalization system, more particularly, a solar power equalization system, wherein connection of an output-reduced string is switched to a power compensation device for fast charging, and after fast charging, compensation for output is performed, thereby minimizing the influence of the reduction in output of a string on the total output and increasing power generation efficiency.
Claims6
A solar power equalization system, comprising:
- a plurality of strings each having a plurality of solar panels connected to each other in series;
- a connection board for collecting power from the plurality of strings connected to each other in parallel and delivering the power, and performing a function of a protective function of a power system;
- an inverter for converting DC power generated using the solar panels into AC power and supplying the AC power to a consumer;
- a measurement link device connected to each of the plurality of strings to minimize a power deviation between the strings;
- and
- a power compensation device connected to the measurement link device to perform charging or discharging with respect to an output-reduced string among the plurality of strings,
- wherein the measurement link device is configured to connect the output-reduced string to the power compensation device, which is configured as a device capable of fast charging and to be quickly charged with generated power from the output-reduced string,
- wherein the measurement link device comprises:
- a measurement part for measuring an output current or voltage of each of the strings;
- a switching part for controlling connection between each of the strings and the power compensation device;
- and
- a controller for controlling charging or discharging of the power compensation device,
- wherein the controller comprises:
- a power generation amount reduction determination module for detecting the output-reduced string,
- a state-of-charge detection module for detecting an amount of power stored in the power compensation device;
- a charging/discharging determination module for determining whether to perform charging or discharging depending on the amount of power stored in the power compensation device;
- and
- a charging control module for connecting the output-reduced string to the power compensation device to charge the power compensation device when the power stored in the power compensation device is equal to or less than a set value,
- wherein the charging control module comprises:
- a charging connection module for disconnecting the output-reduced string from the connection board through the switching art and connecting the output-reduced string to the power compensation device;
- and
- a fast charging module for quickly charging the power compensation device with the power generated by the output-reduced string.
19 more elements
Dependencies are inferred from the claim text.