In the context of new era development, the development of energy power can be said to be increasingly severe, with various adverse phenomena emerging one after another, such as ecological environment deterioration and severe shortage of conventional energy. In order to effectively solve this problem, it is very important to make reasonable use of new clean energy, among which solar energy is the most representative. It has a series of advantages such as abundant resources, strong cleanliness, and is not affected by geographical boundaries. Therefore, it has gradually received high attention from society. Correspondingly, research and innovation with solar photovoltaic grid connected inverters as the main means is imperative, promoting its outstanding application progress.
1. Detailed explanation and analysis of solar photovoltaic grid connected inverters
According to relevant investigations, the solar photovoltaic grid connected power generation system specifically refers to the use of solar panel tools to convert solar power into DC power resources, and then use grid connected inverter equipment to convert DC power into the same form of AC power as the power grid, using some of it for local power supply support, while the rest is fully fed back to the power grid system. At the same time, relevant staff also need to conduct in-depth research and analysis on the specific processes in the operation of solar photovoltaic grid connected inverter systems, such as mathematical model construction, dual loop control measures, maximum power control algorithm, actual operation status and usage effectiveness detection and review of the main circuit, etc. Based on this, a reasonable tracking and detection scheme is proposed, Effectively combining DSP mathematical control to simulate and model the solar photovoltaic grid connected inverter system fundamentally ensures the smooth operation of the solar photovoltaic grid connected inverter system, thereby fully ensuring the efficiency and correctness advantages of the inverter system.
2. The application status and development trend of solar photovoltaic grid connected inverter systems
Based on the current actual situation, China’s solar photovoltaic grid connected inverter system is still in the early stage of development. With the gradual introduction of supportive policies and guidelines in China, solar photovoltaic grid connected inverter system has also been officially put on the agenda, mainly suitable for solving the daily electricity consumption of people in remote areas or the production electricity consumption of special industries, gradually forming a low-voltage user side grid connection mode, which has no relationship with grid scheduling, It is conducive to ensuring that the power grid operates in a normal state at all times. At the same time, with the increasing emphasis on solar photovoltaic grid connected inverter systems by government agencies in China, the specific technical means used in solar photovoltaic power generation have also achieved innovative development and achieved outstanding application results. In this context, we have successively developed and innovated 5kW and 10kW photovoltaic grid connected exemplary power stations, And China also regards solar photovoltaic grid connected inverter systems as the main research direction for the future development of the power industry, continuously increasing investment in the design and manufacturing of photovoltaic grid connected power generation systems, promoting the development of solar photovoltaic grid connected technology.
In addition, from a certain perspective, the solar photovoltaic grid connected inverter system belongs to an active inverter system, which is significantly different from ordinary types of inverters in the past. Through targeted comparative research on the topology structure of the solar photovoltaic grid connected inverter system and in-depth analysis and exploration of the working principle of the inverter system circuit, a clear conclusion can be drawn, which is to utilize the open-loop control of the main circuit of the solar photovoltaic grid connected inverter A detailed comparison of closed-loop and other links can propose scientific and reasonable adjustment and improvement measures, thereby greatly improving the safety and stability performance of the inverter system.
Meanwhile, through research on specific control measures for solar photovoltaic grid connected inverters, it has been found that in order to fully clarify the control subject and control objectives, relevant personnel need to be able to reasonably adopt current and voltage dual closed-loop control measures, in order to achieve effective control and management of the application process of photovoltaic grid connected inverters. Among them, phase-locked loop control technology is one of the main expressions in solar photovoltaic grid connected inverter control, It also has the advantage of ensuring that the output current and voltage tend to be consistent, thereby enabling the solar photovoltaic grid connected inverter to achieve its best application performance. Therefore, it can be understood that in order to fully highlight the advantages of solar photovoltaic grid connected inverters, relevant staff should propose practical and feasible phase-locked loop control methods based on the principle of phase-locked loop control, effectively ensuring application accuracy and authenticity. For the more common maximum power problem, staff can also propose scientific maximum power tracking control measures based on the dual loop control conditions, Widely applied in practical applications. During this period, it is particularly important to note that for the islanding detection problem in solar photovoltaic grid connected inverter systems, staff need to focus on analyzing and identifying the blind spots in islanding detection, and propose reasonable islanding detection methods to fully highlight the advantages of solar photovoltaic grid connected inverters and provide good guarantees for achieving optimal application results.
3. Conclusion
In summary, with the worsening ecological environment and severe energy resource problems, China has gradually begun to prioritize the rational development and utilization of renewable energy. Among them, solar energy has been widely applied and valued due to its abundant energy, making solar photovoltaic grid connected inverter systems one of the future development trends. This article constructs a rationalized photovoltaic grid connected inverter system model structure through specific simulation experiments, and conducts a series of comparative analysis for different control methods, fully verifying the advantages of using solar photovoltaic grid connected inverters, laying a good foundation for improving the effectiveness and feasibility of solar photovoltaic grid connected inverter systems.