Photovoltaic and fuel cell combined generating system

Abstract

The invention relates to an independent generating system and belongs to the field of clean energy generation. The system comprises a photovoltaic generating array, a fuel cell stack and a controller, the system is provided with a super-capacitor communicated with the output of the photovoltaic generating array, an electrolytic power supply of an electrolytic tank is communicated with the photovoltaic generating array, and a hydrogen storage device is arranged behind the electrolytic tank and supplies hydrogen to the fuel cell stack; an output circuit from the photovoltaic generating array to an load, an output circuit from the fuel cell stack to the load and a computer control system are provided, the photovoltaic generating array is used for generating power, surplus power is stored through the super-capacitor in an electrolytic hydrogen mode, system control is achieved by utilizing the sliding mode control technology, the system efficiency is high, the operation is stable, and the system can be applied to occasions needing independent generation conveniently.

Description

technical field [0001] The invention relates to an independent power generation system, in particular to a photovoltaic and fuel cell combined power generation system, which belongs to the field of clean energy power generation. Background technique [0002] In recent years, the development and application of solar photovoltaic power generation technology in China has been greatly developed. The technical level and practicality of solar photovoltaic power generation have been significantly improved. The scope and scale of its application have continued to expand. It has played an important role in electricity consumption and some production electricity consumption, and has achieved good economic benefits and significant social benefits. With the development of the economy and the continuous improvement of people's living standards, the quality of power supply and the guarantee rate of power supply have also been raised. New requirements, China's existing solar photovoltaic p...

AI Technical Summary

Problems solved by technology

[0002]In recent years, the development and application of solar photovoltaic power generation technology in China has been greatly developed, and the technical level and practical degree of solar photovoltaic power generation have been significantly improved. The scope and scale of application continue to expand. Photovoltaic power generation has played an important role in solving the power consumption of people's lives and some production in remote areas, and has achieved good economic benefits and significant social benefits. With economic development and people's living standards The continuous improvement of the power supply quality and the guarantee rate of power supply also put forward new requirements. The existing solar photovoltaic power generation systems in China basically operate independently, and the power supply of the system is affected by seasons and weather conditions to make it stable and effective. The supply is affected and limited. In order to achieve this goal, the time difference between the power generation and power supply of the photovoltaic power generation system is currently adjusted through battery energy storage, which is the main means to ensure stability. The higher the requirements for power supply quality and power supply guarantee rate, the greater the system's demand for batteries. For a long time, the dependence on batteries (mainly lead-acid batteries) has been an important factor affecting the mass promotion and application of photovoltaic power generation systems that operate independently. The reason is that battery energy storage has high investment, short service life, and high depreciation costs, which greatly increase the cost of power generation of the system. There is still a great demand for power generation systems. High-density, low-cost, long-life, and pollution-free energy storage systems have high system self-stability. Improving the stability of power supply for photovoltaic power generation systems is the key to popularizing photovoltaic power generation technology. The bottleneck of further market development

Images