scholarly journals Research on fuel cell energy storage control and power generation system

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3167-3176
Author(s):  
Jing Pan

In order to realize the continuous stability of photovoltaic power generation system and the controllability of thermal energy storage, a photovoltaic fuel cell combined power generation system consisting of photovoltaic cell array, proton exchange membrane fuel cell, alkaline electrolysis cell and super capacitor is proposed. The system, at the same time, establishes the mathematical model of its various components and the system cost model, designs the thermal energy distribution of the thermal energy storage management coordination system, and uses the high efficiency battery to meet the load requirements of the power system. In addition, the paper uses simulation technology as a research method to build a simulation model of hybrid fuel cell thermal energy storage control and power generation system, and analyzes the system?s thermal energy supply and demand balance. The simulation results confirm that the photovoltaic fuel cell hybrid power generation system has high economic performance, can meet the user?s power and thermal energy requirements, and realizes the requirement of completely independent power supply.

2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3089-3098
Author(s):  
Xiaoqin Huang ◽  
Fangming Yang

This paper proposes a photovoltaic fuel cell power generation system to convert solar thermal energy into electrical energy after storage. The energy conversion method of the system mainly utilizes hydrogen storage to realize long-term storage of thermal energy, and realizes continuous and stable power supply through the co-operation between the micro-gas turbine and the proton exchange membrane fuel cell. Based on the model of each component, the simulation platform of photovoltaic fuel cell hybrid thermal energy storage control power generation system is built. Based on the design principle and design requirements of photovoltaic power generation system, the photovoltaic fuel cell hybrid power generation system studied in this paper has a simple capacity. Match the design and conduct thermal energy storage management research on the system according to the system operation requirements. The paper studies the management of hybrid fuel energy storage control system for photovoltaic fuel cells. The paper is based on advanced thermal energy storage management for photovoltaic prediction and load forecasting, and through the organic combination of these three layers of thermal energy storage management to complete the thermal energy storage management of the entire system. Finally, the real-time thermal energy storage management based on power tracking control is simulated and analyzed in MATLAB/Simulink simulation environment.


Author(s):  
Anming Wang ◽  
Ming Liu ◽  
Xiaoqu Han ◽  
Jiping Liu

As concentrating solar power technologies moves to maturity progressively, large-scale solar thermal power plants have gained increasing attention. The exergetic and exergoeconomic analyses allow indicating energy degradation of the component quantitatively and establishing the monetary value to all material and energy flows. Therefore, they have strong theoretical implications to the system optimization. A thermodynamic simulation model of a 50 MW parabolic trough solar power generation system and the related exergetic and exergoeconomic analyses were presented in this paper. The results of exergetic analysis showed that the component of the lowest exergy efficiency was solar field, and the efficiency only had approximate 22%. Moreover, the exergy efficiencies of thermal energy storage and power block were about 81% and 58% respectively. According to the exergoeconomic analysis, the exergoeconomic cost of electricity and output thermal energy of solar field and thermal energy storage varied respectively in the ranges of 0.1277–0.1322 $/kWh, 0.0427–0.0503 $/kWh, and 0.0977–0.1074 $/kWh when thermal energy storage capacity ranged from 4 hours to 12 hours.


2020 ◽  
Vol 24 (5 Part B) ◽  
pp. 3259-3267
Author(s):  
Yuanchun Gu

Objective: Through the design and simulation of hybrid thermal energy storage control of photovoltaic fuel cell, the hybrid thermal energy storage system of photovoltaic fuel cell is further optimized. Method: Firstly, the mathematical model of photovoltaic power generation is established. Then voltage feedback, power feedback, disturbance observation method and conductance increment method are used to track the maximum power of the system. After that, the dynamic model of proton exchange membrane fuel cell is established, and the former maximum power point tracking control strategy is used to keep the voltage stable. Finally, simulation experiments are carried out to verify the effectiveness and superiority of the proposed control strategy and battery model. Results: The hydrogen pressure on the anode side of the fuel cell can be maintained at 0.3 MP at a fast speed. In the process of output, the voltage of fuel cell is much smaller than the polarization voltage of fuel cell. Its voltage decreases gradually from 14 seconds to 16 seconds. Once the illumination changes suddenly, the system can also accurately locate and track the maximum power point, and output the electric quantity. Conclusion: Based on the mathematical model of photovoltaic power generation and the dynamic model of proton exchange membrane fuel cell, the hybrid thermal energy storage system of photovoltaic fuel cell has great advantages. It can keep the voltage stable and track the maximum power of the system in time, which is of great significance for the follow-up research in photovoltaic power generation.


Author(s):  
Y. Y. Yan ◽  
G. S. Chen ◽  
S. C. Chiang ◽  
H. S. Chu ◽  
F. S. Tsu ◽  
...  

A 1 kW proton exchange membrane (PEM) fuel cell power system with heat and water recovery was successfully integrated. This power generation system is designed for the stationary application. The waste heat can be recovered into hot water, which store in a tank with temperature higher than 60°C. This hot water may be suitable for bath and kitchen use in a small family. The adjustment for the power generation system is now on going and promoting. Now 38% in the electrical efficiency (AC110V output) for the system is achieved. With waste heat recovery involved, the system will potentially have overall energy efficiency more than 70%. In order to optimize the system, some technologies should be studied and pre-tested before integration work, which mainly included water management for the fuel cell stack, water and thermal conditions on the performance of fuel cell, air and water pumping power needed for the fitting of optimum system performance.


2016 ◽  
Vol 708 ◽  
pp. 110-117
Author(s):  
Imam Djunaedi ◽  
Haifa Wahyu ◽  
Sugiyatno

The paper presents an architecture and engineering of hydrogen fuel cell electric power generation system based on renewable energy that already installed in Tenjolaya village, Wanassalam sub-district, Lebak - Banten Province. It also discloses some important information as well as some valuable experiences from the pilot plant operation. The renewable electric power generation system combines wind turbine, photovoltaic, hydrogen electrolysis and fuel cell. The basic design of this system is focused on energy storage in the form of hydrogen gas that can be converted back into electricity by using fuel cell units. The engineering development was done to address the issues on limited energy storage in the battery unit which has several drawbacks i.e. short battery lifetime, limited storage capacity and rigorous and continuous maintenance schedule. To enable remote control and monitoring, a web based monitoring system was developed. From the monitoring system the following information are obtained: the amount of electrical power produced by the wind turbine that was intermittent and depends on time that reached 3000 W; similar pattern is observed from the output power of solar PVs and a maximum point of the solar cell power generation was 640 Watt; the time of electricity production by the wind turbine and the solar cell is complementary to each other in every one day cycle. Two valuable experiences have been gained those are: the location near sea shore has a very corrosive air that damages the wind turbine component, and the use of fuel cell requires high investment cost.


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