With the large-scale grid-connected application of renewable energy, the new direct-flexible-converter (DFC) has received more and more attention as an important power electronic device. In this paper, we will introduce the characteristics, application fields, research status and future development trends of optical storage and direct flexible converters.
1. Characteristics of optical storage direct flexible converter.
Optical storage direct flexible converter is a power electronic device based on high-frequency conversion technology, which has the following characteristics:
1.High efficiency and energy saving: The optical storage direct flexible converter adopts high-frequency conversion technology, which can realize the two-way flow of energy, has a high energy conversion efficiency, and can effectively reduce energy consumption.
2.Flexibility: The PV-PF can be used in parallel with a variety of battery modules of different specifications, and the capacity can be expanded or reduced according to different needs.
3.High reliability: The optical storage direct flexible converter adopts a modular design, and each module is independent of each other, which can realize "plug and play" and improve the reliability of the system.
4.Wide range of application: Optical storage direct flexible converter can be widely used in various renewable energy power generation systems, such as solar energy, wind energy, etc., and has a wide range of application prospects.
Second, the application field of optical storage direct flexible converter.
As an important power electronic device, the PV-DCL converter has a wide range of application prospects in renewable energy power generation systems. Specifically, its application areas include:
1.Solar power generation system: In the solar power generation system, the photovoltaic storage direct flexible converter can realize the two-way flow of energy between the solar panel and the power grid, improving the stability and reliability of the system.
2.Wind power generation system: In the wind power generation system, the PV-storage direct-flexible converter can realize the two-way flow of energy between the wind turbine and the power grid, improving the stability and reliability of the system.
3.Distributed energy system: In the distributed energy system, the PV-storage-direct-flexible converter can be used as the core power electronic device to achieve efficient conversion and optimal distribution of energy.
4.Electric vehicle charging system: In the electric vehicle charging system, the optical storage direct flexible converter can convert alternating current to direct current, providing a stable and reliable power supply for electric vehicle charging.
5.Industrial power system: In the industrial power system, the PV-storage direct-flexible converter can realize the efficient conversion and optimal distribution of power, and improve the stability and reliability of the power system.
3 Research status of optical storage direct-flexible converters.
At present, the research of domestic and foreign scholars on optical storage direct-flexible converters mainly focuses on the following aspects:
1.Topology optimization: The topology of the existing PV-DCF converter is optimized to improve its performance and reliability.
2.Research on control strategy: The control strategy of the optical storage direct flexible converter is studied to achieve efficient energy conversion and optimal distribution.
3.Reliability analysis: The reliability of the PV-DCF converter is evaluated and analyzed, and corresponding improvement measures are proposed.
4.Application scenario expansion: According to the needs of different application scenarios, we develop optical storage, direct and flexible converters suitable for different occasions.
Fourth, the future development trend of optical storage direct flexible converters.
With the large-scale grid-connected application of renewable energy and the continuous development of power electronics technology, PV-storage-direct-flexible converters will usher in a broader development space. In the future, the research on optical storage-direct-flexible converters will mainly focus on the following aspects:
1.High efficiency: Further improve the energy conversion efficiency of the PV-storage direct-flexible converter and reduce energy consumption.
2.Intelligent: Artificial intelligence, Internet of Things and other technologies are applied to the design and control of optical storage, direct and flexible converters to achieve intelligent management and control.
3.Diversification: According to the needs of different application scenarios, we develop optical storage, direct and flexible converters suitable for different occasions to achieve diversified applications.
4.Integration: The PV-storage-DC-flexible converter is integrated with other power electronic devices to form an integrated power electronic system and improve the reliability and stability of the system.