scholarly journals A Virtual Test Bench of a Parallel Hybrid Propulsion System for UAVs

Aerospace ◽  
2019 ◽  
Vol 6 (7) ◽  
pp. 77 ◽  
Author(s):  
Luca Boggero ◽  
Sabrina Corpino ◽  
Andrea De Martin ◽  
Giuseppe Evangelista ◽  
Marco Fioriti ◽  
...  
Keyword(s):  
Test Bench ◽  
Propulsion System ◽  
Real System ◽  
Hybrid Propulsion ◽  
The Real ◽  
Virtual Test ◽  
Parallel Hybrid ◽  
Time Histories ◽  
Angular Velocities ◽  
Dynamic Relationships

The article proposes the design of a test bench simulator to test a parallel hybrid propulsion architecture for aeronautical applications. The virtual test bench simulates, in a scaled version, the real test bench, designed for a power of about 0.4 MW. After presenting the architecture of the real propulsion system, the virtual test bench is described. The real system is basically composed by a paralleled electric motor and thermal engine which provide mechanical power to the propeller. Saving cost and volume the test bench is composed by electric motors simulates the behaviors of the real propulsion system despite their differences. The dynamic relationships expressing the transmission of torque between the components, and the method of down-sizing the power delivered are highlighted. Particular attention is given to the real inertia actions that must be simulated on the virtual test bench. An application of the proposed methodology is then presented through the simulation of the take-off phase, and the torque time histories, angular velocities and powers generated on the virtual test bench are used to verify the corresponding time histories expected in the real system.

Experimental evaluation of a hybrid electric propulsion system for small UAVs

2019 ◽  
Vol 92 (5) ◽  
pp. 727-736
Author(s):  
Leonardo Machado ◽  
Jay Matlock ◽  
Afzal Suleman
Keyword(s):  
Fuel Consumption ◽  
Electric Propulsion ◽  
Test Bench ◽  
Combustion Engine ◽  
Propulsion System ◽  
Content Type ◽  
Hybrid Propulsion ◽  
Electric Propulsion System ◽  
Parallel Hybrid ◽  
Hybrid Electric

Purpose This paper aims to experimentally evaluate the performance of a parallel hybrid propulsion system for use in small unmanned aerial vehicles (UAVs). Design/methodology/approach The objective is to combine all the individual components of the hybrid electric propulsion system (HEPS) into a modular test bench to characterize the performance of a parallel hybrid propulsion system, and to evaluate a rule-based controller based on the ideal operating line concept for the control of the power plant. Electric motor (EM) designed to supplement the power of the internal combustion engine (ICE) to reduce the overall fuel consumption, with the supervisory controller optimizing ICE torque. Findings The EM was able to supplement the power of the ICE to reduce fuel consumption, and proved the capability of acting as a generator to recharge the batteries drawing from ICE power. Furthermore, the controller showed that it is possible to reduce the fuel consumption with a HEPS when compared to its gasoline counterpart by running simulated representative UAV missions. The findings also highlighted the challenges to build and integrate the HEPS in small UAVs. Originality/value The modularity of the test bench allows each component to be changed to assess its impact on the performance of the system. This allows for further exploration and improvements of the HEPS in a controlled environment.

Research on Simulation and Experiment of Ship Complex Diesel-Electric Hybrid Propulsion System

2020 ◽  
Vol 64 (02) ◽  
pp. 171-184
Author(s):  
Nengqi Xiao ◽  
Xiang Xu ◽  
Baojia Chen
Keyword(s):  
Power System ◽  
Energy Management ◽  
Test Bench ◽  
Propulsion System ◽  
Operating Conditions ◽  
Hybrid Power System ◽  
Hybrid Propulsion ◽  
Hybrid Power ◽  
Operation Modes ◽  
And Control

This article introduces the composition and 12 operating conditions of a four-engine two-propeller hybrid power system. Through the combination of gearbox clutch and disconnection, the propulsion system has four single-engine operation modes, two double-engine parallel operation modes, and six PTI operation modes. Because the propulsion system has a variety of operating conditions, each operating condition has a form of energy transfer. As a result, its energy management and control are more complicated. To study the energy management and control strategy of a diesel- electric hybrid propulsion system, this work mainly studies the simulation model and sub-models of a diesel-electric hybrid propulsion system. In this study, MATLAB/ SIMULINK software is used to build the diesel engine model, motor model, and ship engine system mathematical model. The test and analysis were carried out on the test bench of the diesel-electric hybrid power system. By comparing the theoretical value of the SIMULINK simulation model with the test value of the test bench system, the correctness of each sub-model modeling method is verified. On the one hand, research on the text lays a theoretical foundation for the subsequent implementation of the conventional energy management and control strategy based on state identification on the unified management and distribution of the diesel-electric hybrid power system. At the same time, energy management of the diesel-electric hybrid system is also carried out. Optimization research provides theoretical guidance.

scholarly journals Multi-source-supplied parallel hybrid propulsion of the inland passenger ship STA.H. Research work on energy efficiency of a hybrid propulsion system operating in the electric motor drive mode

2013 ◽  
Vol 20 (3) ◽  
pp. 20-27 ◽  
Author(s):  
Jakub Kowalski ◽  
Wojciech Leśniewski ◽  
Wojciech Litwin
Keyword(s):  
Energy Efficiency ◽  
Electric Motor ◽  
Propulsion System ◽  
Motor Drive ◽  
Ocean Engineering ◽  
Drive Mode ◽  
Hybrid Propulsion ◽  
Parallel Hybrid ◽  
Electric Motor Drive ◽  
System Operating

Abstract In the Faculty of Ocean Engineering and Ship Technology, Gdansk University of Technology, design has recently been developed of a small inland ship with hybrid propulsion and supply system. The ship will be propelled by a specially designed so called parallel hybrid propulsion system. The work was aimed at carrying out the energy efficiency analysis of a hybrid propulsion system operating in the electric motor drive mode and at performing the noise pollution measurements. The performed investigations have shown that a significant impact on the efficiency and on the acoustic emission has the type of belt transmission applied.

scholarly journals Energy Efficient and Environmentally Friendly Hybrid Conversion of Inland Passenger Vessel

2017 ◽  
Vol 24 (4) ◽  
pp. 77-84 ◽  
Author(s):  
Wojciech Litwin ◽  
Wojciech Leśniewski ◽  
Jakub Kowalski
Keyword(s):  
Energy Efficiency ◽  
Hybrid System ◽  
High Energy ◽  
Propulsion System ◽  
Correct Selection ◽  
Exhaust Emission ◽  
Safety Level ◽  
Hybrid Propulsion ◽  
Passenger Ship ◽  
Parallel Hybrid

Abstract The development and growing availability of modern technologies, along with more and more severe environment protection standards which frequently take a form of legal regulations, are the reason why attempts are made to find a quiet and economical propulsion system not only for newly built watercraft units, but also for modernised ones. Correct selection of the propulsion and supply system for a given vessel affects significantly not only the energy efficiency of the propulsions system but also the environment - as this selection is crucial for the noise and exhaust emission levels. The paper presents results of experimental examination of ship power demand performed on a historic passenger ship of 25 m in length. Two variants, referred to as serial and parallel hybrid propulsion systems, were examined with respect to the maximum length of the single-day route covered by the ship. The recorded power demands and environmental impact were compared with those characteristic for the already installed conventional propulsion system. Taking into account a high safety level expected to be ensured on a passenger ship, the serial hybrid system was based on two electric motors working in parallel and supplied from two separate sets of batteries. This solution ensures higher reliability, along with relatively high energy efficiency. The results of the performed examination have revealed that the serial propulsion system is the least harmful to the environment, but its investment cost is the highest. In this context, the optimum solution for the ship owner seems to be a parallel hybrid system of diesel-electric type

Optimal control of brushless PM motor in parallel hybrid propulsion system

Mechatronics ◽  
2010 ◽  
Vol 20 (4) ◽  
pp. 464-473 ◽  
Author(s):  
P. Bajec ◽  
B. Pevec ◽  
D. Miljavec
Keyword(s):  
Optimal Control ◽  
Propulsion System ◽  
Hybrid Propulsion ◽  
Parallel Hybrid
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