Sliding-mode-control-based DC/DC converters design and implementation for hybrid proton exchange membrane fuel cell/battery power system

2015 ◽  
Author(s):  
Ya-Xiong Wang ◽  
Fei-Fei Qin ◽  
Kai Ou ◽  
Young-Bae Kim
Keyword(s):  
Fuel Cell ◽  
Sliding Mode Control ◽  
Power System ◽  
Proton Exchange Membrane ◽  
Sliding Mode ◽  
Proton Exchange ◽  
Design And Implementation ◽  
Mode Control ◽  
Battery Power ◽  
Exchange Membrane

scholarly journals Research on Control Method of PEMFC Cathode Oxygen Excess Ratio

2020 ◽  
Vol 38 (5) ◽  
pp. 987-993
Author(s):  
Lei Xia ◽  
Dongdong Zhao ◽  
Fei Li ◽  
Xipo Wang ◽  
Jinhao Meng
Keyword(s):  
Fuel Cell ◽  
Sliding Mode Control ◽  
Proton Exchange Membrane ◽  
Control Method ◽  
Sliding Mode ◽  
Proton Exchange ◽  
Mode Control ◽  
Air Supply ◽  
Oxygen Excess ◽  
Oxygen Excess Ratio

Proton exchange membrane fuel cell (PEMFC) is considered to be a promising new energy technology due to its high power density and low operating temperature. Oxygen excess ratio (OER) is one of the main factors that affect the performance of fuel cell systems. The key of OER control is to prevent the "oxygen starvation" phenomena by controlling the air flow input of the cathode. The net output power is optimized to improve the performance of the system while maintaining the system working properly. First of all, a sixth-order dynamic model of PEMFC based on the air supply system is established in MATLAB, and the function equation of the oxygen excess ratio to the load current is obtained. Based on PID control, fuzzy control and super-twisting second-order sliding mode control, an improved fuzzy-sliding mode control strategy is proposed to realize OER control. Simulation results show that this method has good robustness and fast adjustment performance.

Power Management of a Portable Proton Exchange Membrane Fuel Cell-Battery Power System

2010 ◽  
Author(s):  
Yan Zhang ◽  
Biao Zhou
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Power Management ◽  
Power Distribution ◽  
Proton Exchange Membrane ◽  
Pem Fuel Cell ◽  
Proton Exchange ◽  
Management Approach ◽  
Battery Power ◽  
Exchange Membrane

A portable Proton Exchange Membrane (PEM) fuel cell-battery power system with hydrogen as fuel has higher power density than conventional batteries and is one of the promising environment-friendly small-scale alternative energy sources. Power management system, as the major control system in the portable PEM fuel cell-battery power system, directly controls the fuel cell stack sub-system, battery charging sub-system and power distribution control sub-system. How to design the power management system is one of the critical issues in optimizing the power system performance, efficiency and components life time. In this study, a set of portable PEM fuel cell-battery system model is introduced. A power management approach with an emergency shutdown function is presented, which not only balances the power distribution between fuel cell and battery at prescribed load condition, but also controls the battery charging cycles to extend the battery life. The simulation results shows the proposed power management approach can effectively control the system performance as expected.

scholarly journals Design of Incremental Conductance Sliding Mode MPPT Control Applied by Integrated Photovoltaic and Proton Exchange Membrane Fuel Cell System under Various Operating Conditions for BLDC Motor

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Jehun Hahm ◽  
Hyoseok Kang ◽  
Jaeho Baek ◽  
Heejin Lee ◽  
Mignon Park
Keyword(s):  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Sliding Mode ◽  
Proton Exchange ◽  
Operating Conditions ◽  
System Control ◽  
Atmospheric Conditions ◽  
Pv Array ◽  
Incremental Conductance ◽  
Exchange Membrane

This paper proposes an integrated photovoltaic (PV) and proton exchange membrane fuel cell (PEMFC) system for continuous energy harvesting under various operating conditions for use with a brushless DC motor. The proposed scheme is based on the incremental conductance (IncCond) algorithm combined with the sliding mode technique. Under changing atmospheric conditions, the energy conversion efficiency of a PV array is very low, leading to significant power losses. Consequently, increasing efficiency by means of maximum power point tracking (MPPT) is particularly important. To manage such a hybrid system, control strategies need to be established to achieve the aim of the distributed system. Firstly, a Matlab/Simulink based model of the PV and PEMFC is developed and validated, as well as the incremental conductance sliding (ICS) MPPT technique; then, different MPPT algorithms are employed to control the PV array under nonuniform temperature and insolation conditions, to study these algorithms effectiveness under various operating conditions. Conventional techniques are easy to implement but produce oscillations at MPP. Compared to these techniques, the proposed technique is more efficient; it produces less oscillation at MPP in the steady state and provides more precise tracking.

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