6 results about "Renewable energy storage" patented technology

The application discloses a kind of wind and light complementary calcium cycle thermochemical energy storage system multi-objective collaborative control method based on AI optimization, it is related to renewable energy storage technical field, the reversible carbonation reaction of calcium-based material (CaO / CaCO3) is used to realize the high-density storage and release of heat energy, the space-time prediction model of wind power, photovoltaic output is constructed by random forest algorithm, and the global optimization of system multi-objective is realized by combining improved particle swarm optimization algorithm.Compared with existing electrochemical energy storage and physical energy storage technology, the calcium cycle thermochemical energy storage of the application has the significant advantages of low energy storage cost, long energy storage time, long cycle life, abundant raw materials and the like.The results show that the annual power generation of the system after optimization reaches 223.67GWh, the cost of electricity per kilowatt-hour is reduced to 0.35 yuan / kWh, the annual carbon emission reduction is 167800 tons, and the investment recovery period is 7.34 years.The application provides an economical and efficient long-time energy storage solution for high-proportion renewable energy grid connection.

The application discloses a coupled inductor super-high gain DC-DC converter, a device and a control method, and belongs to the technical field of renewable energy storage grid connection, wherein the DC-DC converter integrates quadratic structure, switched capacitor, three-winding coupled inductor and voltage multiplication unit technology, realizes super-high voltage gain without relying on extreme duty cycle, and provides three degrees of freedom of flexibly adjustable output voltage; the coupled inductor super-high gain DC-DC conversion device comprises a voltage sampling sensor, a controller, a PWM signal generator and the DC-DC converter; the control method is applied to the DC-DC conversion device. In addition, while obtaining high voltage gain, the DC-DC converter can effectively reduce the voltage stress borne by the switch tube, and is suitable for occasions with high requirements for high voltage conversion performance in a renewable energy power generation system.

The application discloses a method for carbon dioxide hydrogenation driven by renewable energy, which comprises the following steps: a renewable energy power generation device generates power by using renewable energy; the generated electric energy is stored and used by a renewable energy storage device; carbon dioxide collected by a carbon dioxide collecting device and hydrogen obtained by electrolyzing water are introduced into a raw material buffer tank, mixed and then introduced into a micro-reactor hydrogenation device to perform carbon dioxide hydrogenation reaction; reaction products are separated by a three-phase separator to obtain product water as raw material for electrolyzing water; liquid products are introduced into a liquid hydrocarbon separation system to separate C5 + gasoline products; gas products are introduced into a gas separation system to separate unreacted carbon dioxide and hydrogen, lean dry gas, low-carbon olefins and liquefied gas; the unreacted carbon dioxide and hydrogen are recycled to the system.

This invention discloses a high-hydrogen-density liquid organic hydrogen carrier and its applications, belonging to the field of hydrogen energy storage and utilization technology. The liquid organic hydrogen carrier is a composite system of a functionalized nitrogen-containing heterocyclic compound and a metal-organic framework material supported on a non-precious metal catalyst. The nitrogen-containing heterocyclic framework is connected with electron-donating and electron-withdrawing groups, constructing an intramolecular electron push-pull system. The non-precious metal catalyst is supported inside the pores or on the surface of the metal-organic framework material. Through molecular structure design and catalyst system optimization, this invention achieves a hydrogen storage density of not less than 7.0 wt%, a dehydrogenation onset temperature of not more than 150℃, and a dehydrogenated hydrogen purity of not less than 99.99%, with excellent cycle stability and low catalyst cost. This liquid organic hydrogen carrier can be widely used in renewable energy storage, long-distance hydrogen transportation, vehicle-mounted hydrogen sources, and distributed energy supply systems.

Reconfigurable power converter topologies that may switch between non-isolated Buck-Boost converter and isolated Dual-Active Bridge (DAB) converter or full-bridge converter. The switching may provide for reconfiguring the power converter inputs and outputs to series or parallel connections in accordance with design needs. The implementations of the disclosure may be utilized for electrified transportation renewable energy storage and power grid support.

The application discloses a kind of renewable energy driven carbon dioxide hydrogenation production aromatic hydrocarbon system and method, belong to clean energy utilization and carbon capture utilization technical field;The system includes renewable energy power generation device, renewable energy storage device, carbon dioxide capture device, electrolytic water hydrogen production device, moving bed reaction device and product separation device;Wherein, moving bed reaction device includes multiple moving bed reactors and dehydrator, carbon dioxide hydrogenation reaction is carried out in multiple steps, after every moving bed reactor is entered dehydrator and is treated, dehydration can improve carbon dioxide conversion rate;The application carries out carbon dioxide hydrogenation reaction under the driving of renewable energy, can produce chemical aromatic hydrocarbon, can reduce the content of CO2 in air, solve greenhouse effect and other environmental problems.