High-power electrolytic hydrogen production rectification power supply and control method

A technology of rectifying power supply and control method, which is applied in output power conversion device, conversion of AC power input to DC power output, electrolysis process, etc., can solve the problem of low input current distortion, inability to produce hydrogen with high power, and hydrogen production efficiency Reduce the number of devices, reduce the number of devices, and achieve the effect of simple and reliable control

Active Publication Date: 2021-08-31
SICHUAN UNIV
View PDF23 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional high-power electrolytic stack rectifier power supplies usually use diodes or thyristor rectifiers (6-pulse or multi-pulse rectifiers), which have large ripple components in the DC output voltage or current, resulting in reduced hydrogen production efficiency
Although the direct use of pu

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-power electrolytic hydrogen production rectification power supply and control method
  • High-power electrolytic hydrogen production rectification power supply and control method
  • High-power electrolytic hydrogen production rectification power supply and control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0030] Such as figure 1 As shown, a high-power electrolytic hydrogen production rectification power supply control method includes the following process:

[0031] The phase-locked circuit is used to obtain the zero-crossing point of the a-phase grid voltage ua, and the DSP control circuit calculates the grid cycle in real time according to the zero-crossing point of the a-phase grid voltage ua, and obtains the grid reference phase;

[0032] Use the current Hall sensor to sample the input current value of the three-phase LC filter respectively , , , Multi-pulse thyristor rectifier DC side output current value , Three-phase current source type PWM rectifier DC side output current value ;

[0033] The DSP control circuit is based o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a control method of a high-power electrolytic hydrogen production rectification power supply. The control method comprises the following steps of: acquiring a zero crossing point of a-phase power grid voltage ua by using a phase-locked circuit, calculating a power grid period in real time by a DSP control circuit according to the zero crossing point of the a-phase power grid voltage ua, and acquiring a power grid reference phase; respectively sampling an input current value of a three-phase LC filter, a direct current side output current value of a three-phase current source type PWM rectifier and a direct current side output current value of a multi-pulse thyristor rectifier by using a current Hall sensor; and employing the DSP control circuit to carry out control calculation according to the values, adopting a PI controller to control the output current of the multi-pulse thyristor rectifier, and adopting the PI controller and a repetitive controller to control the direct current side output current value of the three-phase current source type PWM rectifier. According to the control method, the output power is large, the hydrogen production efficiency is high, the output current can be flexibly adjusted in a large range, and the system is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by water electrolysis, in particular to a high-power electrolytic hydrogen production rectifier power supply and a control method. Background technique [0002] Energy is the source of power for the development of human society. With the rapid development of social economy, the demand for energy continues to increase. At the same time, the environmental and energy crisis is deepening day by day, and it is imminent to reduce the use of traditional carbon-containing fossil energy. As a zero-carbon green renewable energy, hydrogen energy has the advantages of high energy density and high conversion efficiency, and can realize zero emission and zero pollution in the whole process from development to utilization. The preparation of hydrogen is an important part of the hydrogen energy industry chain. Existing hydrogen production technologies mainly include hydrogen production from fossil f...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02M7/162H02M7/217H02M7/219H02M1/14C25B9/65C25B15/02C25B1/04
CPCC25B1/04C25B15/02C25B9/65H02M1/14H02M7/1626H02M7/2173H02M7/219Y02E60/36
Inventor 孟鑫陈茂林贺明智蒋璐岭郭慧珠
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap