Modeling and control of fuel cell-battery hybrid power systems for portable electronics

2008 ◽  
Author(s):  
Piergiorgio Alotto ◽  
Massimo Guarnieri ◽  
Federico Moro
Keyword(s):  
Fuel Cell ◽  
Power Systems ◽  
Hybrid Power Systems ◽  
Modeling And Control ◽  
Portable Electronics ◽  
Hybrid Power ◽  
And Control

scholarly journals Improving the Fuel Economy and Battery Lifespan in Fuel Cell/Renewable Hybrid Power Systems Using the Power-Following Control of the Fueling Regulators

2020 ◽  
Vol 10 (22) ◽  
pp. 8310
Author(s):  
Nicu Bizon ◽  
Mihai Oproescu ◽  
Phatiphat Thounthong ◽  
Mihai Varlam ◽  
Elena Carcadea ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Power Systems ◽  
Fuel Economy ◽  
Storage System ◽  
Energy Storage System ◽  
Power Converter ◽  
Hybrid Power Systems ◽  
Safe Operation ◽  
Hybrid Power ◽  
Load Demand

In this study, the performance and safe operation of the fuel cell (FC) system and battery-based energy storage system (ESS) included in an FC/ESS/renewable hybrid power system (HPS) is fully analyzed under dynamic load and variable power from renewable sources. Power-following control (PFC) is used for either the air regulator or the fuel regulator of the FC system, or it is switched to the inputs of the air and hydrogen regulators based on a threshold of load demand; these strategies are referred to as air-PFC, fuel-PFC, and air/fuel-PFC, respectively. The performance and safe operation of the FC system and battery-based ESS under these strategies is compared to the static feed-forward (sFF) control used by most commercial strategies implemented in FC systems, FC/renewable HPSs, and FC vehicles. This study highlights the benefits of using a PFC-based strategy to establish FC-system fueling flows, in addition to an optimal control of the boost power converter to maximize fuel economy. For example, the fuel economy for a 6 kW FC system using the air/fuel-PFC strategy compared to the strategies air-PFC, fuel-PFC, and the sFF benchmark is 6.60%, 7.53%, and 12.60% of the total hydrogen consumed by these strategies under a load profile of up and down the stairs using 1 kW/2 s per step. For an FC/ESS/renewable system, the fuel economy of an air/fuel-PFC strategy compared to same strategies is 7.28%, 8.23%, and 13.43%, which is better by about 0.7% because an FC system operates at lower power due to the renewable energy available in this case study.

Dynamic operation and control of microgrid hybrid power systems

Energy ◽  
2014 ◽  
Vol 66 ◽  
pp. 314-323 ◽  
Author(s):  
Ting-Chia Ou ◽  
Chih-Ming Hong
Keyword(s):  
Power Systems ◽  
Hybrid Power Systems ◽  
Dynamic Operation ◽  
Hybrid Power ◽  
And Control

Molten Carbonate Fuel Cell Gas Turbine Combined Cycle for Marine Propulsion: Part B — Part Load Operation

2002 ◽  
Author(s):  
Maria-Teresa Basurto ◽  
Pericles Pilidis ◽  
Richard Hales
Keyword(s):  
Fuel Cell ◽  
Power Systems ◽  
Gas Turbine ◽  
Combined Cycle ◽  
Molten Carbonate Fuel Cell ◽  
Molten Carbonate ◽  
Hybrid Power Systems ◽  
Hybrid Power ◽  
Marine Propulsion ◽  
Carbonate Fuel Cell

Molten Carbonate Fuel Cell/Gas Turbine (MCFC/GT) hybrid power systems represent a modern, efficient and clean alternative to the currently used marine propulsion systems. The objective of this paper is to present the results found from the application of MCFC/GT hybrid power systems to marine propulsion, and in particular to present the results of the off-design performance of a COGAFC system (Combined Gas Turbine and Fuel Cell System). The results presented are subjected to the current uncertainties on MCFC power systems derived from its early stage of development. It is, then, the interest of the authors to summarise the results of the research work done, providing to the lectors the understanding and a general view of which are the concerns, the benefits, and which should be the next steps on the implementation of these systems. The study is summarised into two papers: “Molten Carbonate Fuel Cell Gas Turbine Combined Cycle for Marine Propulsion. Part A: Design Point Operation” (Basurto et al., 2002), that describes the selection of the design point, and “Molten Carbonate Fuel Cell Gas Turbine Combined Cycle for Marine Propulsion. Part B: Part Load Operation”, that describes the off-design performance of the system. The study is based on previous work published by the authors on the integration of MCFCs with gas turbines (Basurto et al., 2001).

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