Browse Topic: Electric hybrid power

Items (21)

Hybrid Powertrain Operation Optimization Considering Cross Attribute Performance Metrics

2017-01-114503/28/2017

Hybrid electric vehicles are continuously challenged to meet cross attribute performance while minimizing energy usage and component cost in a very competitive automotive market. As electrified vehicles become more mainstream in the marketplace, hybrid customers are expecting more attribute refinement in combination with the enhanced fuel economy benefits. Minimizing fuel consumption, which tends to drive hybrid powertrain engines to operate under lugging type calibrations, traditionally challenge noise, vibration, and harshness (NVH) metrics. Balancing the design space to satisfy the cost metrics, energy efficiency, noise and vibration & drivability under the hybrid engine lugging conditions can be optimized through the use of multiple CAE tools. This paper describes how achieving NVH metrics can put undesirable boundaries on Powertrain Operation which could affect other performance attributes. Up front modeling of the full hybrid systems combined with powertrain lugging conditions

De Hesselle, Eric, Grozde, Mark, Adamski, Raymond, Rolewicz, Thomas, Erazo, Mark

Using Finite-Element Analysis Results and Field-Programmable Gate Arrays to Accelerate Hybrid Powertrain Controller Validation

2015-01-115404/14/2015

Test and validation of control systems for hybrid vehicle power trains provide a unique set of challenges. Not only does the electronic control unit (ECU), or pair of ECUs, need to smoothly coordinate power flow between two or more power plants, but it also must handle the power electronics' high-speed dynamics due to PWM signals frequently in the 10-20 kHz range. The trend in testing all-electric and hybrid-electric ECUs has moved toward using field-programmable gate arrays (FPGAs) as the processing node for simulating inverter and electric motor dynamics in real time. Acting as a purpose-built processor colocated with analog and digital input and output, the FPGA makes it possible for real-time simulation loop rates on the order of one microsecond. Combining the temporal fidelity provided by the FPGA with the model fidelity of a machine model based on finite-element analysis yields a hardware-in-the-loop test system that can replicate the high-speed, nonlinear dynamics required to

Black, Benjamin, Morita, Tomohiro, Minami, Yusuke, Farnia, David

Uniform Provisions Concerning the Approval of: Passenger Cars Powered by an Internal Combustion Engine Only, or Powered by a Hybrid Electric Power Train with Regard to the Measurement of the Emission of Carbon Dioxide and Fuel Consumption and/or the Measurement of Electric Energy Consumption and Electric Range, and of Categories M1 and N1 Vehicles Powered by an Electric Power Train Only with Regard to the Measurement of Electric Energy Consumption and Electric Range.

INT-REG-62407/08/2014

Emission of Carbon Dioxide and Fuel Consumption.

INT-REG-58404/17/2014

Emission of Carbon Dioxide and Fuel Consumption.

Integrating the Curriculum using a Bench-Scale Hybrid Power Train

2014-01-062604/01/2014

The Rowan University Mechanical Engineering program is studying the use of a long-term (five semester) design project on student learning and concept retention. The project, a bench-scale hybrid electric powertrain system, is designed, analyzed and fabricated by students in five modules, starting in their sophomore year and culminating in their final semester as seniors (see prior ASEE publication [1]). This complex project has been selected in order to integrate the core mechanical engineering courses: Mechanical Design, Thermodynamics, System Dynamics and Control, and Fluid Mechanics. A bench-scale hybrid-electric vehicle powertrain has sufficient complexity to involve all Mechanical Engineering disciplines and the simplicity to be built by students over the course of five semesters. In addition, hybrid-electric technology is at the cutting-edge of automotive technology, and has been found to hold a special fascination for most mechanical engineering students. A “faculty prototype

Salas Acosta, Mariaeugenia, Bhatia, Krishan, Constans, Eric, Kadlowec, Jennifer, Merrill, Thomas, Zhang, Hong

INT-REG-49105/31/2013

Emission of Carbon Dioxide and Fuel Consumption.

System Modeling for Integration and Test of Safety-Critical Automotive Embedded Systems

2013-01-018904/08/2013

Functional safety of automotive embedded systems is a key issue during the development process. To support the industry, the automotive functional safety standard ISO 26262 has been defined. However, there are several limitations when following the approach directly as defined in the standard. Within this work, we propose an approach for the integration and test of safety-critical systems by using system modeling techniques. The combination of two state-of-the-art modeling languages into a dedicated multi-language development process provides a direct link between all stages of the development process, thus enabling efficient safety verification and validation already during modeling phase. It supports the developer in efficient application of requirements as defined by ISO 26262, hence reducing development time and cost by providing traceable safety argumentation. Based on a hybrid electric power train scenario, we evaluate the benefits of the proposed system modeling approach for

Krammer, Martin, Martin, Helmut, Karner, Michael, Watzenig, Daniel, Fuchs, Anton

Mobile Hybrid Power System's Elements

2012-01-223610/22/2012

The effectiveness of elements comprising a hybrid electric power generating system was studied. The wind and photovoltaic renewable resources served as integral components of the hybrid systems configuration. A HMMWV towable trailer system provided an intermediary basis for formulation of methodology needed for optimization of power generation and energy storage capacity constrained by cost, size and weight of the system. The methodology employed in this paper is scalable from kilowatts to megawatts or from man portable systems to significantly larger systems which can be housed in 40 foot ISO containers.

Dawidowicz, Edward, Podlesak, Thomas, Leung, Fee

Paradox of Miniaturization Trend Versus Hybrid Electrical Vehicle Requirements

2012-36-026210/02/2012

In recent years, a number of key influences are contributing to accelerate technological innovation in the automotive industrial sector. Concerns about renewable energy resource, fossil-fuels crises and higher gasoline prices, global warming awareness and environmental impacts, scarcity of minerals/metals and electronics demands rising are some of the major challenges for vehicle automakers and their suppliers. The interest in alternative fuel vehicles, especially hybrid-electrical vehicles (HEV) or renewable energy power concepts for road vehicles has become intensified and represents a significant area of research and development in order to meet nowadays global demands. However because of Hybrid Vehicles unique Power Supply System the electrical/electronic architecture (E/E) is sophisticated, requesting more robust sealing and a particular wiring harness components, such as connector, terminals and cables. On the other hand there is a remarkable miniaturization over automotive Power

Almeida, Ivan A., Marcoccia, Luis C., Curione, Enrico F., Fernandes, Marcelo M.

The Benefits of Hybrid Electric Drive for Military Operations

12VHYBRD20103/27/2012

Hybrid Electric Drive (HED) provides the potential to improve military vehicle capabilities beyond the well understood fuel economy benefits. Additional HED benefits for military operations can be realized in the areas of mobility, survivability, lethality, power generation and maintainability. General Dynamics Land Systems (GDLS) continues to demonstrate significant advantages that HED can offer to military vehicle platforms. This presentation will focus on the advanced military capabilities provided by HED utilizing in-hub wheel motors and include a summary of GDLS demonstrator vehicles with integrated HED. Presenter Andrew Silveri, GENERAL DYNAMICS LAND SYST

Silveri, Andrew

INT-REG-14602/11/2011

Emission of Carbon Dioxide and Fuel Consumption.

INT-REG-5311/08/2010

Emission of CO2 - Fuel Consumption - Electrical Vehicle Consumption and Range.

Robust Control Techniques Enabling Duty Cycle Experiments Utilizing a 6-DOF Crewstation Motion Base, a Full Scale Combat Hybrid Electric Power System, and Long Distance Internet Communications

2006-01-307711/07/2006

The RemoteLink effort supports the U.S. Army's objective for developing and fielding next generation hybrid-electric combat vehicles. It is a distributed soldier-in-the-loop and hardware-in-the-loop environment with a 6-DOF motion base for operator realism, a full-scale combat hybrid electric power system, and an operational context provided by OneSAF. The driver/gunner crewstations rest on one of two 6-DOF motion bases at the U.S. Army TARDEC Simulation Laboratory (TSL). The hybrid power system is located 2,450 miles away at the TARDEC Power and Energy System Integration Laboratory (P&E SIL). The primary technical challenge in the RemoteLink is to operate both laboratories together in real time, coupled over the Internet, to generate a realistic power system duty cycle. A topology has been chosen such that the laboratories have real hardware interacting with simulated components at both locations to guarantee local closed loop stability. This layout is robust to Internet communication

Compere, Marc, Goodell, Jarrett, Simon, Miguel, Smith, Wilford, Brudnak, Mark

Hybrid Electric Power and Energy Laboratory Hardware-in-the-Loop and Vehicle Model Implementation

2006-01-116204/03/2006

The power system for the Future Combat System's (FCS) family of manned ground vehicles will not only need to satisfy mobility requirements, but also need to provide continuous and pulsed power for weapons, armaments and other auxiliary loads. Investigating hybrid power technologies has been an active research area for the U.S. Army RDECOM's Tank Automotive Research, Development and Engineering Center (TARDEC) Power and Energy System Integration Laboratory (P&E SIL). The P&E SIL is located in Santa Clara, CA and is maintained by Science Applications International Corporation (SAIC). Current P&E SIL efforts include imposing realistic loads on notional combat vehicle subsystems in order to evaluate components, such as motors and batteries. Equally important research is being conducted through the application of realistic driver/commander inputs which will aid in the validation of vehicle designs, control systems and vehicle power management architectures capable of meeting the mobility

Simon, Miguel, Compere, Marc, Connolly, Thomas, Lors, Charles, Smith, Wilford, Brudnak, Mark

Highly Conductive Solvent-Free Polymer Electrolytes for Lithium Rechargeable Batteries

TR-OSTI-GEN_015704/20/2004

Phase-I Final Report of Highly Conductive Solvent-Free Polymer Electrolytes for Lithium Rechargeable Batteries by U.S. Department of Energy.

Filler, Robert

Development and Validation of Control Algorithm for Series Hybrid Power Train

2003-01-328110/27/2003

Developed control algorithm for series hybrid electric power train is presented systematically, which keeps engine operation points on the locus of highest efficiency torque/speed points using a lookup table defined by engine power and speed. The off-line simulation model of series hybrid power train is developed which includes sub-models of control system and controlled objective (such as engine, motor, battery pack and so on). The debug and validation of control algorithm is performed on developed modular test facility. The results show that developed control algorithm can effectively keep engine operating on the locus of high efficiency points and much more fuel economy can be achieved than that of conventional ICE power train, meanwhile battery SOC can be maintained within reasonable level without charging outside during cycles.

Chu, Liang, Wang, Qingnian, Liu, Minghui, Li, Jun

Development and Validation of Logic Threshold Control Algorithm for Parallel Hybrid Power Train

2003-01-231206/23/2003

Logic threshold control algorithm for parallel hybrid electric power train is presented systematically, in which engine operation points are limited within higher efficient area by logic threshold control algorithm targeting fuel economy. The off-line simulation model of parallel HEV power train is developed which includes sub-models of logic threshold control system and controlled objective (such as engine, electric motor, battery pack and so on). The debug and validation of logic threshold control algorithm is completed on developed modular test facility. The results show that the simple and practical logic threshold control algorithm can effectively limited engine operation points and much more fuel economy can be achieved than that of conventional ICE power train.

Chu, Liang, Wang, Qingnian, Liu, Minghui, Zhao, Ziliang

Electricity Flow Analysis in the Series Hybrid System by the Charge-discharge Tester

2001-01-078403/05/2001

In this study, the series hybrid electric system is recommended as suitable power systems of the motor vehicles in urban area. It is important for this system to improve the comprehensive energy efficiency when components are combined, and to evaluate it appropriately. In this report, the technique to grasp energy loss in detail that occurs when electric power flows complicatedly in the series hybrid power system has been examined and the energy efficiency of the series hybrid power system on urban driving has also been evaluated.

Hayashida, Morimasa, Narusawa, Kazuyuki, Kamiya, Yushi

Optimization of Performance and Energy Consumption on Series Hybrid Electric Power System

1999-01-092203/01/1999

Recently, studies and developments have been underway in many countries to introduce a new type of car (hereinafter referred to as “Commuter car”), characterized by ultra smallness, energy saving and low pollution, for short-range purposes, for example commutation, in urban areas (1).In our previous study, the characteristics of electric motors were noticed, and the series hybrid system was focused to power commuter cars.Therefore, a simulated commuter car based on a small electric vehicle (EV) was set on a chassis dynamometer to test the basic items (2) . From these results, a new simulated series hybrid type commuter car that uses a high-power AC motor and a high-efficiency power generator was set on the bench.By acceleration/deceleration bench tests, selection of the reduction gear ratio and optimization of power supply from the generator were investigated in order to achieve both the performance necessary and sufficient for the city driving and power management. Moreover, an

Hayashida, Morimasa, Narusawa, Kazuyuki

270-Vdc/Hybrid 115-Vac Electric Power Generating System Technology Demonstrator

91205109/01/1991

Sundstrand is investigating 270-Vdc/hybrid 115-Vac electrical power generating and distribution systems technology so as to be well prepared to offer such systems for future aircraft applications. The approach taken has been to design, build, and test a representative system that meets or exceeds the tightest of the performance standards as defined by miliary standards. This paper describes a single-channel, 120-kW hybrid system and presents some typical performance data. The dc bus supplies a 30-kVA, 400-Hz, 115-Vac inverter; constant power load banks of up to 150 kW; and a resistive load bank of up to 90 kW. System simulation studies indicated the potential for unstable operation due to the negative impedance of the constant power load in conjunction with the source ripple filter and the load EMI filters. Unstable voltage and current were observed in system testing when the magnitude of the source impedance was not sufficiently below that of the load impedance. Plans for installing a

Niggemann, R.E., Peecher, S., Rozman, G.

Economic Comparison of Future Automotive Power Systems

78003502/01/1978

This paper presents Exxon Enterprises Inc.'s approach to the economic evaluation of advanced automotive power systems. The paper derives and compares projected initial costs and operating costs for a subcompact car and a full size car powered by four different advanced power systems, i.e. an advanced spark ignition engine, a lightweight diesel engine, a battery powered motor, and a diesel electric hybrid system. The operating economics are based on a detailed analysis of the power system energy consumption. A proprietary computer program was used to simulate vehicle operation on a specific driving cycle and thus provide suitable energy consumption estimates. The initial and operating costs of the vehicles also reflect the different size and weight of the power systems, as well as weight propagation effects on the rest of the vehicle. For a meaningful comparison basis, each vehicle power system is sized to achieve an equivalent performance level (carrying capacity, acceleration

Mauri, G., Fetterman, G. P., Ricci, R. L.

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