Kai Deng

Adaptive Online Energy Management Controls for Fuel Cell and Battery Hybrid Vehicles


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ISBN:

978-3-8440-9204-2

Series:

Aachener Schriftenreihe zur Elektromagnetischen Energiewandlung
Herausgeber: Univ.-Prof. Dr.-Ing. habil. Dr. h. c. mult. Kay Hameyer
Aachen

Volume:

Keywords:

hydrogen powertrain; energy management; model predictive control; deep reinforcement learning

Type of publication:

Thesis

Language:

English

Pages:

170 pages

Figures:

50 figures

Weight:

237 g

Format:

21 x 14,8 cm

Binding:

Paperback

Price:

48,80 € / 61,10 SFr

Published:

September 2023

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Abstract:

Hydrogen energy is a promising future energy source, especially in transportation for zero-pollution improvements. Hybrid systems using hydrogen fuel cells and batteries are crucial for electrification in transportation. These systems offer longer driving range, higher power, and faster charging, making them environmentally friendly and reliable for heavy-duty transport. However, managing multiple energy sources poses challenges.

The Energy Management Strategy (EMS) plays a vital role in hybrid powertrains as it controls various components. Objectives include reducing fuel consumption, efficient driving, and component aging. For fuel cell and battery hybrid electric railway vehicles, EMS must minimize hydrogen consumption, sustain battery charge, and leverage route information for energy-efficient driving and fuel cell longevity.

This work proposes two strategies to optimize the fuel cell hybrid system. First, a hierarchical EMS based on model predictive control (MPC) uses route information, transforming the problem mathematically and achieving hydrogen reduction, battery charge sustenance, and constraint adherence. Second, a deep reinforcement learning (DRL)-based EMS complements situations with no timely route information. It uses historical data and a fuel cell aging prediction model with DRL method, twin delayed deep deterministic policy gradient (TD3).

Simulations of the strategies demonstrate operational cost savings of 14% to 40% compared to conventional methods, meeting design requirements like sustainable battery charging. Hardware-in-the-loop testing validates their real-time capability and effectiveness.