scholarly journals Hydrogen Fuel Cell and Ultracapacitor Based Electric Power System Sliding Mode Control: Electric Vehicle Application

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2798 ◽  
Author(s):  
Yuri B. Shtessel ◽  
Malek Ghanes ◽  
Roshini S. Ashok
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Electric Power ◽  
Electric Vehicle ◽  
Sliding Mode ◽  
Power Converter ◽  
Electric Power System ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
Electric Car

Control of a perturbed electric power system comprised of a hydrogen fuel cell (HFC), boost and boost/buck DC–DC power converters, and the ultra-capacitor (UC) is considered within an electric vehicle application. A relative degree approach was applied to control the servomotor speed, which is the main controllable load of the electric car. This control is achieved in the presence of the torque disturbances via directly controlling the armature voltage. The direct voltage control was accomplished by controlling the HFC voltage and the UC current in the presence of the model uncertainties. Controlling the HFC and UC current based on the power balance approach eliminated the non-minimum phase property of the DC–DC boost converter. Conventional first order sliding mode controllers (1-SMC) were employed to control the output voltage of the DC–DC boost power converter and the load current of the UC. The current in HFC and the servomotor speed were controlled by the adaptive-gain second order SMC (2-ASMC). The efficiency and robustness of the HFC/UC-based electric power systems controlled by 1-SMC and 2-ASMC were confirmed on a case study of electric car speed control via computer simulations.

Automobile Driving Control for a Dual Power Electric Vehicle With a Hydrogen Fuel Cell

2014 ◽  
Author(s):  
Keilin Kuo ◽  
Chungchen Tsao
Keyword(s):  
Fuel Cell ◽  
Power System ◽  
Electric Vehicle ◽  
Operation Time ◽  
Hydrogen Fuel Cells ◽  
Hydrogen Fuel Cell ◽  
Hydrogen Fuel ◽  
The Road ◽  
Auxiliary Power ◽  
Dual Power

In this study, we adopt a dual power system for extension (DPES) operation by combining the existing power system of an electric vehicle with a hydrogen fuel cell. This was to enhance the durability of the electric vehicle and reduce the inconvenience of battery charging. The lithium battery acts as the primary power source and has real-time monitoring of its state of charge (SOC), while the hydrogen fuel cells act as the auxiliary power supply. The auxiliary power can be used either directly or for charging the lithium battery while the vehicle is in its idle state. The dual power system is coupled with a dual-mode motor controller and energy management system. This study aims to apply the dual power system on the electric vehicle using hydrogen fuel cells. We designed a simulation platform for real driving conditions using Labview to send and receive control commands. In this study, we simulated the road cycles of the Economic Commission for Europe (ECE-40), Japanese legislative cycle (JP10) and the World-wide Motorcycle Emissions Test Cycle (WMTC), using Proportional-integral Control (PI) for automatic tracking and employing engineering error analysis to determine the most suitable PI parameter values for the simulated system. The results showed that using a fixed 100 W fuel cell could enhance the operation time up to 21 %, 21 %, and 14 % for the road cycles of the ECE-40, JP10, and WMTC, respectively. Due to the required features of an actual vehicle, we also designed an energy limiting system to manage the driver-controlled electronic throttle by controlling the instantaneous and maximum power output of the motor in order to achieve savings in energy consumption, increase its operation time, protect the system, and enhance its durability.

Sign in / Sign up

Export Citation Format

Share Document