Efficiency Analysis of Drive Train Topologies Applied to Electric/Hybrid Vehicles

Estima, Jorge O.; Cardoso, António J. Marques

doi:10.1109/tvt.2012.2186993

Cited by 252 publications

(109 citation statements)

References 32 publications

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“…By varying the DC-bus voltage, the overall system can obtain higher efficiency in certain regions of operation [15,16,17,18,19,20,22,23]. This topic is the main focus of this paper and will be further explored in the next section.…”

Section: Expanding the Torque Speed Envelopementioning

confidence: 99%

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Implementation of an Adjustable Target Modulation Index for a Variable DC Voltage Control in an Electric Delivery Truck

Najmabadi

Humphries

Boulet

2016

WEVJ

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SummaryThis paper introduces an alternative control strategy for the variable voltage control of an electric drivetrain for a Class 4 medium-duty delivery truck and compares the resulting vehicle energy consumption over standardized drive cycles. The baseline system, S1, uses a standard electric drivetrain without a DC-DC and a battery at 460 V. The proposed system, S2, contains a DC-DC converter and a lower voltage battery with three voltage options being investigated: 200 V, 230 V, and 300 V. Previous work has shown that using a bi-directional DC-DC converter, the Fixed Target Modulation Index (FTMI) of the power electronics can be optimized in order to reduce the energy consumption across a drive cycle. In this study an Adjustable Target Modulation Index (ATMI) is proposed, which combines the best aspects of the fixed target modulation index control to attempt to improve efficiency even further. The new control strategy is shown to improve the energy consumption by up to 2.34% over a vehicle with a conventional electric drivetrain, depending on the required drive cycle.

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Section: Expanding the Torque Speed Envelopementioning

confidence: 99%

“…It can be seen that before the base speed the MI of S2 is maintained at a higher value compared to S1. Therefore it is expected that there will be improvements in terms of efficiency in the low RPM region [15,16,17,18,19,20].…”

Section: Increasing the System Efficiency Using A Dc-dc Convertermentioning

confidence: 99%

Implementation of an Adjustable Target Modulation Index for a Variable DC Voltage Control in an Electric Delivery Truck

Najmabadi

Humphries

Boulet

2016

WEVJ

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“…In this system, the EV can run at high speed regions when the battery has low SOC (State of Charge). Estima et al showed the improvement of the efficiency by using a converter (6) . However, In order to solve this problem, the series chopper power train using the buck-boost chopper as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

High Efficiency Series Chopper Power Train for Electric Vehicles Using a Motor Test Bench

et al. 2015

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Many researchers have studied electric vehicles (EVs) for improving their efficiency to increase the driving range. The system design of an electrical power train has significant influence on the total driving range per charge and has been widely researched. A series chopper power train using a buck-boost chopper has been proposed as an electrical power train system. This electrical power train achieves high efficiency due to low and high inverter input voltage in the low and high speed regions, respectively. In previous studies, a high efficiency control optimizing the chopper output voltage was proposed, and a motor test bench with characteristics similar to actual EVs was constructed by using a battery emulation system with voltage variation characteristics, which occur due to the state of charge (SOC) and internal resistance. This paper shows the effects of optimizing the chopper output voltage on the driving range per charge in both efficiency estimation and the motor test bench experiment. This allows the verification of the usefulness of optimizing the chopper output voltage for increasing the efficiency. The results indicate an improvement of 0.9% and 2.7% in the driving range per charge during efficiency estimation and the motor test bench experiment, respectively.

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“…Although electric and fuel cell vehicles have promising advantages compared to a conventional combustion engine vehicle, they have some limitations which make them a less attractive option than current combustion engine automobile technology [10]- [11].…”

Section: Electric Vehicles and Hybrid Electric Vehiclesmentioning

confidence: 99%

“…The key requirements for these systems are; (I) high efficiency over wide torque and speed ranges, (II) high torque and power density to reduce the weight and size of the vehicle, (III) high starting torque, (IV) wide speed range, (V) constant torque and constant power regions and (VI) reasonable cost [10]- [11]. Another important design aspect of electric and fuel cell vehicles is the drive system.…”

Section: Electric Vehicles and Hybrid Electric Vehiclesmentioning

confidence: 99%

Design and Hardware Implementation of Laboratory-scale Hybrid DC Power System for Educational Purposes

Farhadi¹,

Mohammed²

2015 ASEE Annual Conference and Exposition Proceedings

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. His current research interests include design, control and protection of dc power system, simulation models, power electronics and energy management in distribution systems with hybrid energy storage. Dr. Osama A. Mohammed, Florida International University Dr. Mohammed is a Professor of Electrical Engineering and is the Director of the Energy SystemsResearch Laboratory at Florida International University, Miami, Florida. He received his Master and Doctoral degrees in Electrical Engineering from Virginia Tech in 1981 and 1983, respectively. He has performed research on various topics in power and energy systems in addition to computational electromagnetics and design optimization in electric machines, electric drive systems and other low frequency environments. He performed multiple research projects for several Federal agencies since 1990's dealing with; power system analysis, physics based modeling, electromagnetic signature, sensorless control, electric machinery, high frequency switching, electromagnetic Interference and ship power systems modeling and analysis. Professor Mohammed has currently active research programs in a number of these areas funded by DoD, the US Department of Energy and several industries. Professor Mohammed is a world renowned leader in electrical energy systems and computational electromagnetics. He has published more than 400 articles in refereed journals and other IEEE refereed International conference records. He also authored a book and several book chapters. Professor Mohammed is an elected Fellow of IEEE and is an elected Design and Hardware Implementation of Laboratory-Scale Hybrid DC Power System for Electrical Engineering Education Purposes AbstractThe DC microgrid is an effective architecture that is utilized to achieve reliable power with high efficiency through the implementation of power electronics converters and energy storage devices. Many systems are currently using DC power. For instance, DC architecture is employed in data centers to provide efficient and reliable power distribution across large numbers of electrical loads. The proper utilization of the DC power system involves with many new challenges and requires development of new techniques for power flow control, energy management and protection. In this paper, we present the development of our educational DC microgrid platform which includes popular renewable energy sources and hybrid storage systems. This lab-scale platform provided an educational environment for senior students and graduate students to take part in laboratory experiments and to understand and develop new ideas for DC power system applications.

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Efficiency Analysis of Drive Train Topologies Applied to Electric/Hybrid Vehicles

Cited by 252 publications

References 32 publications

Implementation of an Adjustable Target Modulation Index for a Variable DC Voltage Control in an Electric Delivery Truck

Implementation of an Adjustable Target Modulation Index for a Variable DC Voltage Control in an Electric Delivery Truck

High Efficiency Series Chopper Power Train for Electric Vehicles Using a Motor Test Bench

Design and Hardware Implementation of Laboratory-scale Hybrid DC Power System for Educational Purposes

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