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Multi-power supply system and method

A power supply system and power supply technology, applied in emergency power supply arrangement, control/regulation system, electrical components, etc., can solve the problem of large mutual influence between auxiliary power supply and AC power grid connection, and achieve the effect of reducing dependence

Active Publication Date: 2011-08-24
MIDEA GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a multi-power supply system to solve the technical problem in the prior art that the auxiliary power supply and the AC power supply have a large mutual influence on the grid

Method used

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  • Multi-power supply system and method

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0022] as attached figure 1 Shown: a multi-power supply system, including the first power source 1 (commercial power) whose output characteristic is voltage source type, the first power rectifier circuit 2, the energy storage circuit 7 (high-voltage electrolytic capacitor), the first power source 1, the second A power supply rectifier circuit 2 and the input end of the energy storage circuit 7 are sequentially connected, and the output end of the energy storage circuit 7 provides an operating power supply for the load 9, and the first power supply 1 is used to provide an AC grid power supply, which is rectified by the first power supply rectification circuit 2 into Direct current, outputting the first direct current; also includes a second power supply 3, a second power supply output voltage control circuit 4 whose output characterist...

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Abstract

The invention relates to related technical field of a power supply system, in particular to a multi-power supply system and a multi-power supply method. The system comprises a first power supply, a first power supply rectifying circuit, an energy storage circuit, a second power supply, a second power supply output voltage control circuit, a one-way conductive circuit, an output voltage feedback circuit and a load. The system can receive feed of a mains supply (namely a first type of power supplies) at a load end, while an auxiliary power supply (namely a second type of power supplies), such as a solar energy power supply, a wind power generation power supply and the like, does not feed the mains supply but only supplies power to the load, and the interference of a power grid of the mains supply is reduced to the greatest degree. Meanwhile, the system provides convenience for mains supply grid connection, namely the mains supply can be timely supplemented and used according to the need.

Description

technical field [0001] The invention relates to the technical field related to power supply systems, in particular to a multi-power supply power supply system and method. Background technique [0002] The existing grid-connected technology is to change the auxiliary power supply into AC with the same frequency and phase as the AC mains, and then connect to the grid. The AC grid-connected technology is relatively complicated, and at the same time, the interaction between the grid-connected power supply and the mains is very large. , if the manufacturing quality of the grid-connected power supply is poor, it will have a serious impact on the power grid. If it is light, the noise of the power grid will become heavier, and if it is serious, it will affect the operation safety of the power grid. [0003] At the same time, the electricity generated by instant power generation devices such as solar energy and wind power generation needs to be consumed immediately, otherwise it will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06H02M3/07H02M3/335
CPCY02B10/72Y02B10/70
Inventor 王斌李强
Owner MIDEA GRP CO LTD
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