Method and system for converting photovoltaic power to battery
A power conversion and battery technology, applied in photovoltaic power generation, battery circuit devices, current collectors, etc., can solve problems such as large control costs, consumption, and strong intermittent
Active Publication Date: 2020-12-04
国网(山东)电动汽车服务有限公司
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Problems solved by technology
[0002] In the existing technology, it is a very common means of energy storage to generate electricity and charge batteries through distributed power sources such as solar energy and wind power. However, although new energy sources such as solar energy and wind power are clean energy, they can protect the environment and save energy. Energy, all of them have a common feature that the output power is highly accidental and intermittent, which is easy to cause instability. At present, most of the operation methods are to make the output more stable by controlling the conversion of the converter, but it consumes a lot of control costs. , and the need for higher converter costs, better converter devices, how to directly control the output of solar energy to reduce the impact on the battery, protect the battery, and delay the effect of battery energy storage, this is a problem that needs to be solved at present
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[0042] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings and their embodiments; it should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to to limit the present invention. Other systems, methods and / or features of this embodiment will become apparent to those skilled in the art after reviewing the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the following claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the following detailed description.
[0043] Such as figure 1As shown, the present invention proposes a schematic diagram o...
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The invention discloses a method and system for converting the photovoltaic power into a battery. The method comprises the following steps: a solar cell equivalent model, a DC / DC converter, a battery,and a DC / AC converter equivalent model are constructed. The one or more software programs are imported into a controller, wherein the controller performs software simulation based on one or more software programs selected by one or more of load equipment / solar equipment / power grid, so as to obtain a reference control factor; according to the software simulation, the controller controls a solar cell to perform equivalent input test, and feeds back a control factor according to the equivalent input; a difference value between the control factor and the reference control factor is determined, and whether the difference value is in a fluctuation range or not is judge; if yes, the equivalent input is input to the solar cell, and the system is converted to the solar cell to be charged; if not,the software simulation is performed again according to the difference value between the feedback control factor and the reference control factor, and the reference control factor is adjusted until the simulation result and the feedback result meet a predetermined standard.
Description
technical field [0001] The invention relates to the technical field of controlling battery charging, and in particular, relates to a method and system for converting photovoltaic power to batteries. Background technique [0002] In the existing technology, it is a very common means of energy storage to generate electricity and charge batteries through distributed power sources such as solar energy and wind power. However, although new energy sources such as solar energy and wind power are clean energy, they can protect the environment and save energy. Energy, all of them have a common feature that the output power is highly accidental and intermittent, which is easy to cause instability. At present, most of the operation methods are to make the output more stable by controlling the conversion of the converter, but it consumes a lot of control costs. , and the need for higher converter costs and better converter devices, how to directly control the output of solar energy to r...
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IPC IPC(8): H02J7/35
CPCH02J7/35Y02E10/56
Inventor 不公告发明人
Owner 国网(山东)电动汽车服务有限公司