Optimal Fractional‐Order Proportion Integration Differentiation Control of Proton Exchange Membrane Electrolyzer for Offshore Wind Power Hydrogen Production System

Author:

Tong Fan1,Wei Wuqing1,Jin Mingyue2,Sun Xi2ORCID,Wang Qiuyuan1,Luo Qin1

Affiliation:

1. Department of Power Planning and Design Shanghai Investigation, Design & Research Institute Co., Ltd. Shanghai 200335 China

2. Department of Automation North China Electric Power University Baoding 071003 China

Abstract

Offshore wind power is mostly of strong randomness and unpredictability, which brings a great challenge to proton exchange membrane (PEM) water electrolysis‐based hydrogen production. Besides, volatile temperature and pressure tend to impose prominent impacts on electrolyzer parameters as well. By analyzing the electrochemical characteristics of PEM electrolyzers, the electrochemical model of PEM electrolyzer in offshore wind power generation hydrogen production system is established. To ensure the control performance of PEM electrolyzers, the fractional‐order proportion integration differentiation (FOPID) control strategy and the improved firefly algorithm (IFA) are introduced, and the relevant parameters are optimized according to the overshoot and stability time as evaluation indicators. In order to adapt to the FOPID control requirements, a step‐type inertia weighting factor is employed to improve the classical firefly algorithm to avoid local optimum, and a mutation mechanism is used to expand the search range. Verification results show that the proposed IFAFOPID controller is superior to the traditional PID controller with a smaller overshoot and a shorter transition time subject to different disturbances, and thus is more beneficial to achieve precise voltage control and obtain stable hydrogen output.

Funder

Fundamental Research Funds for the Central Universities

Publisher

Wiley

Subject

General Energy

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