An off-grid AC-DC hybrid microgrid system and its control method
An AC-DC hybrid and control method technology, which is applied to the off-grid AC-DC hybrid microgrid system and its control field, can solve problems such as poor economy and unfavorable environment, and achieve the effects of low cost control, simple control, and guaranteed stability.
Active Publication Date: 2021-09-24
CHINA NUCLEAR POWER TECH RES INST CO LTD +2
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Problems solved by technology
[0004] The purpose of the present invention is to provide an off-grid AC-DC hybrid micro-grid system with hydrogen energy recycling and its control method, so as to solve the current technical problems of poor economical hydrogen production from electrolyzed water and harmful gases that are harmful to the environment , to achieve zero-pollution and zero-emission energy supply
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[0056] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
[0057] In addition, in order to better illustrate the present invention, numerous specific details are given in the following specific examples. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In some instances, means, elements and circuits well known to those skilled in the art have not been described in detail so as to highlight the gist of the present invention.
[0058] like figure 1 As shown, Embodiment 1 of the present invention provides an off-grid AC-DC hybrid microgrid system with h...
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The invention provides an off-grid AC / DC hybrid microgrid system and its control method. The system includes a DC bus, a DC / AC bidirectional converter unit and an AC bus connected in sequence; the DC bus is connected with a first fuel cell power generation unit, Photovoltaic power generation unit and storage battery; user load power supply unit, auxiliary system load power supply unit and hydrogen production and storage unit are connected to the AC bus; photovoltaic power generation unit is used to generate electricity from solar energy; hydrogen production and storage unit is used to produce hydrogen and store it The produced hydrogen; the first fuel cell power generation unit is used to generate electricity with hydrogen; part of the electric energy generated by the photovoltaic power generation unit supplies power to the user load through the user load power supply unit, and part of it provides self-sustaining power to the microgrid system through the auxiliary system load power supply unit. Part of the required electrical energy is stored in the battery. The invention solves the technical problems that the current hydrogen production by electrolysis of water has poor economy and produces harmful gas which is unfavorable to the environment.
Description
technical field [0001] The invention relates to the field of energy technology, in particular to an off-grid AC / DC hybrid microgrid system with hydrogen energy recycling and a control method thereof. Background technique [0002] The continuous consumption of traditional fossil fuels (such as coal, oil, and natural gas) will cause serious energy shortages and global environmental problems. It is imminent to develop new renewable energy sources. Some existing renewable energy technology solutions have certain limitations, such as Wind energy is greatly affected by the environment and climate, and there are intermittent and random problems, and grid connection will have an impact on the power grid; another example is ocean energy (tidal energy, wave energy, temperature difference energy) which has great limitations at the geographical and technical levels; and For example, solar energy can only generate electricity when there is sunlight, and there are intermittent and random ...
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IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/382H02J3/383H02J3/387H02J3/32Y02E10/56Y02E60/36Y02E70/30
Inventor 王尧郭树生吴昊齐宇博刘波位召祥杨森黄文有向文元
Owner CHINA NUCLEAR POWER TECH RES INST CO LTD