Hybrid inverter for power supply system

Abstract

The invention discloses a hybrid inverter for a power supply system. Direct current generated by new energy is input to a DC / DC (direct current / direct current) converting unit, and transmitted to a DC / AC (direct current / alternating current) converting unit after conversion, the DC / AC converting unit is connected to an output control unit which is connected with an external load, a central control processing unit is connected with a chip drive unit and the output control unit respectively, the chip drive unit is used for controlling voltage output of the DC / DC converting unit and the DC / AC converting unit, and the output control unit is connected with an external power grid. The hybrid inverter provides working voltage to the external load by controlling output through the output control unit, a energy storage device is connected with the DC / DC converting unit, used for storing extra electric energy generated by the DC / DC converting unit and used for discharging to provide voltage for the load when necessary. Output is controlled through the central control processing unit, intelligent switching between grid synchronization and grid disconnection is achieved, normal operation of the external load is guaranteed while operation reliability of equipment is improved, and utilization rate of electric energy is improved.

Description

technical field [0001] The invention relates to the technical field of new energy, in particular to a hybrid inverter used in a power supply system. Background technique [0002] At present, no matter solar solar inverter or wind energy inverter, there are only grid-connected inverters and off-grid inverters. The grid-connected inverter is connected to the grid to transmit power to the grid to form a complete power system, but it can only be used under the condition of the grid; the off-grid inverter can be used as a power generation system alone, but it can only be provided to the load. And the excess electricity can only be wasted and cannot be transmitted to the grid, and cannot bring electricity sales benefits to users. The industry urgently needs the emergence of a hybrid inverter product that can break through the installation location limit, avoid wasting excess power, and bring revenue from electricity sales. Contents of the invention [0003] The purpose of the ...

AI Technical Summary

Problems solved by technology

The grid-connected inverter is connected to the grid to transmit power to the grid to form a complete power system, but it can only be used under the condition of the grid; the off-grid inverter can be used as a power generation system alone, but it can only be provided to the load. And the excess electricity can only be wasted, and the excess energy cannot be transmitted to the grid, and it cannot bring electricity sales revenue to users

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