A High Compatibility LED Centralized DC Power Supply System

Abstract

The invention discloses a high-compatibility LED centralized DC power supply system, which includes N power supply modules of M types in total and with the same output voltage average value, N Z source impedances, output busbars, and LEDs connected to the output busbars Lamp group; the output positive pole of each power module is connected to the input positive pole of Z source impedance corresponding to each other, the output negative pole of each power module is connected to the input negative pole of Z source impedance one to one, and the output of each Z source impedance The positive poles are all connected to the positive poles of the output busbars, and the output negative poles of each Z source impedance are connected to the negative poles of the output busbars. The invention can suppress the output voltage and current fluctuation of each power supply module, reduce the output ripple content of the LED power supply system, and improve the output power quality; can suppress the circulation phenomenon between the power supply modules, reduce loss, improve the compatibility and expandability of the LED power supply system In addition, when one or more power modules have a direct connection, it will not cause a busbar short circuit.

Description

technical field [0001] The invention relates to the technical field of DC power supply, in particular to a highly compatible LED centralized DC power supply system. Background technique [0002] The conventional multi-module parallel high-power LED centralized DC power supply system has been more and more used in daily life, which requires each parallel power supply module to have the same power structure, sometimes in order to ensure the reliability of the LED centralized DC power supply system , and even requires that each parallel power supply module must be the same type of power supply module produced by the same manufacturer, which greatly reduces the compatibility and scalability of the multi-module parallel high-power LED centralized DC power supply system. And when a power module fails in the conventional multi-module parallel high-power LED centralized DC power supply system, the user often has to go to the original manufacturer of the module for repair and replace...

AI Technical Summary

Problems solved by technology

[0002] The conventional multi-module parallel high-power LED centralized DC power supply system has been more and more used in daily life, which requires each parallel power supply module to have the same power structure, sometimes in order to ensure the reliability of the LED centralized DC power supply system , and even requires that each parallel power supply module must be the same type of power module produced by the same manufacturer, which greatly reduces the compatibility and scalability of the multi-module parallel high-power LED centralized DC power supply system

And when a power module fails in the conventional multi-module parallel high-power LED centralized DC power supply system, the user often has to go to the original manufacturer of the module for repair and replacement, which virtually causes time and economic costs. In addition, even though the parallel power modules in the conventional multi-module parallel high-power LED centralized DC power supply system are the same type of power module produced by the same manufacturer, due to the influence of components and external environmental factors, each module The output characteristics cannot be completely consistent, and there are fluctuations in the output voltage and output current. If the power modules are directly used in parallel, a "circulation" phenomenon will inevitably occur between the power modules, resulting in a significant increase in the reliability and efficiency of the entire LED power system. reduce

In addition, when one or more parallel power supply modules have a direct connection, it will cause a short circuit on the busbar, which poses a serious threat to the safety of the LED centralized DC power supply system.

Images