Off-grid inverter based on new energy and electric supply complementary power supply and control method thereof

A new energy and inverter technology, applied in collectors, battery circuit devices, electric vehicles, etc., can solve the problems of frequent charging and discharging of batteries, poor power supply quality, and stable inverters, etc., to improve continuity and stability , improve the quality and reliability, the effect of reliable backup time

Active Publication Date: 2014-12-24
佛山市华葆电源设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this process, there are some disadvantages as follows: the battery will be charged and discharged frequently, which is easy to shorten the life of the battery; when the battery is under low voltage, the mains power is disconnected, so the backup time cannot be guaranteed; when the load is powered by bypass, the quality of power supply Not as stable as inverters

Method used

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  • Off-grid inverter based on new energy and electric supply complementary power supply and control method thereof
  • Off-grid inverter based on new energy and electric supply complementary power supply and control method thereof
  • Off-grid inverter based on new energy and electric supply complementary power supply and control method thereof

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Embodiment Construction

[0049] Such as figure 1 As shown, the off-grid inverter based on the complementary power supply of new energy and mains power includes a battery, a controller, a new energy charging unit for charging the battery, and a rectifier for connecting to the mains and charging the battery. The controllers described include:

[0050] The detection module is used to detect the charging voltage and charging current of the storage battery;

[0051]The control module is used to adjust and control the power of the rectifier according to the detected charging current, so as to charge the storage battery in a constant current charging manner, and adjust and control the power of the rectifier according to the detected charging voltage, so as to The battery is charged by constant voltage charging. The controller is a DSP controller, and the new energy charging unit can be a solar charging unit, a wind energy charging unit, and the like. The rectifier is used for accessing the commercial powe...

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Abstract

The invention discloses an off-grid inverter based on new energy and electric supply complementary power supply and a control method thereof. The inverter comprises a storage battery, a controller, a new energy charging unit and a rectifier. The method comprises the step of adjusting and controlling the power of the rectifier according to the detected charging current to enable the storage battery to be charged in a constant-current charging mode or adjusting and controlling the power of the rectifier according to the detected charging voltage to enable the storage battery to be charged in a float charging mode. According to the inverter and the control method, the storage battery is not charged and discharged frequently, the power supply quality and the power supply reliability of the inverter are improved, and the power supply continuity and the power supply stability of the inverter are improved. The off-grid inverter based on the new energy and the electric supply complementary power supply and the control method for the off-grid inverter can be widely applied to the field of inverters.

Description

technical field [0001] The invention relates to the power supply technology of an inverter, in particular to an off-grid inverter based on complementary power supply of new energy and commercial power. Background technique [0002] The traditional solar off-grid inverter works as follows: solar energy charges the battery of the inverter and supplies power to the load through the output voltage of the inverter. If the solar power is less than the load power, the voltage of the battery of the inverter will decrease. When the battery When the voltage is lower than a certain value, such as 10.5V / cell, the off-grid inverter switches to the bypass, the utility power supplies power to the load through the bypass, and charges the battery through the rectifier. When the battery voltage returns to a specific voltage, such as 13V, the off-grid inverter switches from the bypass to the inverter to supply power to the load. In this process, there are some disadvantages as follows: the ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/35
Inventor 封宁波尹晓娟向延钊聂文强白维
Owner 佛山市华葆电源设备有限公司
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