Photovoltaic hydrogen production system control method based on incremental conductance method

Abstract

The invention belongs to the technical field of hydrogen production converter control, and particularly relates to a photovoltaic hydrogen production system control method based on an incremental conductance method. On the basis of a step-down converter, a conductance increment method control technology is added to track a photovoltaic maximum power point and is directly coupled with an electrolytic hydrogen production system to improve the hydrogen production efficiency. The method comprises the following steps: step 1, collecting voltage and current information output by a photovoltaic cell in different working environments; step 2, analyzing the photovoltaic step-down converter; step 3, designing a conductance increment control method; step 4, sending the measured and collected electric quantity information and the required calculation information to a control module, and sending the calculated information to a step-down converter switching device at the same time; step 5, designing a water electrolysis system with a hydrogen production function; and step 6, directly coupling the step-down converter in the step 4 with the water electrolysis hydrogen production system, sending voltage and current signals output by the step-down converter into the water electrolysis system, and finally performing stable hydrogen production through the water electrolysis system.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production converter control, and in particular relates to a photovoltaic hydrogen production system control method based on the conductance increment method. Background technique [0002] At present, energy is mainly obtained by burning fossil resources, which aggravates the problem of environmental pollution and waste of resources. The current world energy situation is grim. In view of the increasing demand for energy and the status quo of climate change, the use of renewable energy with abundant reserves, pollution-free and sustainable development and utilization is an inevitable trend to deal with energy issues. Compared with renewable energy sources such as geothermal energy and wind energy, the use of photovoltaic panels to collect solar power generation has the greatest low environmental cost power generation capacity. However, its disadvantages are that the intermittent nature is very obv...

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Problems solved by technology

Compared with renewable energy sources such as geothermal energy and wind energy, the use of photovoltaic panels to collect solar power generation has the greatest low environmental cost power generation capacity. However, its disadvantages are that the intermittent nature is very obvious, and it is difficult to provide continuous and reliable power supply. Usually, light-intensive areas and power Consumption areas are usually far apart, often resulting in a mismatch between supply and demand, which hinders the security and stability of the grid, while fluctuations in power generation pose problems for the consumption of clean energy

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