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Energy management strategy considering energy storage system degradation for hydrogen fuel cell ship

Cao Wei, Geng Pan, Xu Xiaoyan, Tarasiuk Tomasz

Polish Maritime Research

2023

nr 2

95--104

A hybrid energy system (HES) including hydrogen fuel cell systems (FCS) and a lithium-ion (Li-ion) battery energy storage system (ESS) is established for hydrogen fuel cell ships to follow fast load transients. An energy management strategy (EMS) with hierarchical control is presented to achieve proper distribution of load power and enhance system stability. In the high-control loop, a power distribution mechanism based on a particle swarm optimization algorithm (PSO) with an equivalent consumption minimization strategy (ECMS) is proposed. In the low-level control loop, an adaptive fuzzy PID controller is developed, which can quickly restore the system to a stable state by adjusting the PID parameters in real time. Compared with the rule-based EMS, hydrogen consumption is reduced by 5.319%, and the stability of the power system is significantly improved. In addition, the ESS degradation model is developed to assess its state of health (SOH). The ESS capacity loss is reduced by 2% and the daily operating cost of the ship is reduced by 1.7% compared with the PSO-ECMS without considering the ESS degradation.

An efficient fuzzy pi approach to real-time control of a ros-based mobile robot

Rezoug Nabil, Zerikat Mokhtar, Chekroun Soufyane

Przegląd Elektrotechniczny

2022

R. 98, nr 2

1--5

This paper presents the implementation and experimental validation of a fuzzy PI control framework on a Turtlebot Kobuki. Due to the robot complex kinematic model structure, we first designe a guidance law to overcome computational challenges that could become problematic under real time control, further experimentation tryals evoked the need for a robust solution which was introduced through an integral action of the PI controller cascaded into the Fuzzy controller. Control performance analysis were carried out in a real experimental setup in order to validate the effectiveness of the proposed scheme.

Ten artykuł przedstawia implementację i eksperymentalną walidację rozmytej struktury kontroli PI na Turtlebot Kobuki. Ze względu na złożoną strukturę modelu kinematycznego robota, najpierw opracowaliśmy prawo przewodnie, aby przezwyciężyć wyzwania obliczeniowe, które mogą stać się problematyczne przy sterowaniu w czasie rzeczywistym. do kontrolera Fuzzy. Analizę działania sterowania przeprowadzono w rzeczywistym układzie doświadczalnym w celu sprawdzenia skuteczności proponowanego schematu.