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Full-Text Articles in Engineering
Current Sensing For Automotive Electronics -- A Survey, Asha Patel, Mehdi Ferdowsi
Current Sensing For Automotive Electronics -- A Survey, Asha Patel, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
Current sensing is widely used in power electronic applications such as dc-dc power converters and adjustable-speed motor drives. Such power converters are the basic building blocks of drivetrains in electric, hybrid, and plug-in hybrid electric vehicles. The performance and control of such vehicles depend on the accuracy, bandwidth, and efficiency of its sensors. Various current-sensing techniques based on different physical effects such as Faraday's induction law, Ohm's law, Lorentz force law, the magnetoresistance effect, and the magnetic saturation effect are described in this paper. Each technique is reviewed and examined. The current measurement methods are compared and analyzed based on …
Power Sharing In A Double-Input Buckboost Converter Using Offset Time Control, Deepak Somayajula, Mehdi Ferdowsi
Power Sharing In A Double-Input Buckboost Converter Using Offset Time Control, Deepak Somayajula, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
Multi-input power electronic converters have been gaining popularity in applications such as renewable energy sources and hybrid electric vehicles due to their reduced component count. In this paper, a new control method is introduced and successfully applied to a double-input buckboost converter to adjust the power supplied by each one of the sources. The control scheme is based on controlling the offset time between the switching commands while switching frequency is kept constant. Theoretically, it is proved that the offset time between the switch commands has a direct impact on the amount of current drawn from each source. The proposed …
Single-Phase Bidirectional Ac-Dc Converters For Plug-In Hybrid Electric Vehicle Applications, Lisheng Shi, Andrew Meintz, Mehdi Ferdowsi
Single-Phase Bidirectional Ac-Dc Converters For Plug-In Hybrid Electric Vehicle Applications, Lisheng Shi, Andrew Meintz, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
Plug-in hybrid electric vehicles (PHEVs) are specialized hybrid electric vehicles that have the potential to obtain enough energy for average daily commuting from batteries. These batteries would be charged from the power grid and would thus allow for a reduction in the overall petroleum consumption. To implement the plug-in function, a single phase bidirectional AC-DC converter interfacing with the grid is essential. The implementation of a bidirectional AC-DC converter can allow for battery recharge from the grid, battery energy injection to the AC grid, and battery energy for AC power stabilization. In this paper, the basic requirements and specifications for …
Utilization And Effect Of Plug-In Hybrid Electric Vehicles In The United States Power Grid, Steven D. Jenkins, John R. Rossmaier, Mehdi Ferdowsi
Utilization And Effect Of Plug-In Hybrid Electric Vehicles In The United States Power Grid, Steven D. Jenkins, John R. Rossmaier, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
Plug-in hybrid electric vehicles (PHEVs) are uniquely capable of providing both transportation and battery storage interconnection to the electric power grid. This ability allows PHEVs the possibility of serving the power grid in the capacity of a mobile energy storage unit, providing the grid with additional stability, reliability, costeffectiveness, and efficiency. Additionally, with the higher fuel efficiency of PHEVs, the transportation and power generation sectors can collectively reduce their ecologically harmful emissions and increase their reliance on environmentally friendly energy sources. These concepts are still new and under development; in this paper, the viability of the PHEV as a mobile …
Comparison Of Nimh And Li-Ion Batteries In Automotive Applications, Aditya Jayam Prabhakar, Mehdi Ferdowsi
Comparison Of Nimh And Li-Ion Batteries In Automotive Applications, Aditya Jayam Prabhakar, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
The pressing need to decrease the greenhouse gases and to improve the efficiency of the existing fleet of vehicles it is imperative that they use some cleaner energy to run the vehicle. Electrical energy can be used in addition with gasoline used by the internal combustion engine of a conventional vehicle to supplement the incremental demand of power above the average power required by the vehicle. This requires for an on-board energy storage system and batteries like NiMH and Li-ion have proven to be efficient storage devices. This paper provides a comprehensive comparison of these batteries used in hybrid electric …
Hev To Phev Conversion Compatibility, Steven D. Jenkins, Mehdi Ferdowsi
Hev To Phev Conversion Compatibility, Steven D. Jenkins, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
This paper includes some of the information gathered regarding the feasibility of converting a series-parallel configured electric vehicle to a plug-in hybrid electric vehicle versus using a series configured electric vehicle to a plug-in hybrid electric vehicle. It will explain the theory behind how a series configured hybrid electric vehicle (HEV) might be a better option due to the power rating of the electric motor. Using ADVISOR (Advanced Vehicle Simulator) it will explain test results and form conclusions regarding the efficiency of a series-parallel configured HEV vs. a series configured HEV as it relates to their feasibility of conversion to …
Study On The Effects Of Battery Capacity On The Performance Of Hybrid Electric Vehicles, Deepak Somayajula, Andrew Meintz, Mehdi Ferdowsi
Study On The Effects Of Battery Capacity On The Performance Of Hybrid Electric Vehicles, Deepak Somayajula, Andrew Meintz, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
Hybrid electric vehicles are gaining a significant presence in the auto market. However, the present day hybrid electric vehicles mostly use battery as a secondary source of power. If the battery were to be used as a primary source of power then the battery capacity is one of the important features in the design of a hybrid electric vehicle. Hybrid electric vehicles which are powered by more than one energy source have to follow a good energy management strategy to provide the best fuel economy in all situations. This paper presents a comprehensive study of the effect of variation of …
Control Strategy Optimization For A Parallel Hybrid Electric Vehicle, Andrew Meintz, Mehdi Ferdowsi
Control Strategy Optimization For A Parallel Hybrid Electric Vehicle, Andrew Meintz, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
The efficiency improvement of parallel hybrid electric vehicles (HEVs) is strongly dependent on how the supervisory control of a vehicle determines the power split between the internal combustion engine (ICE) and the electric motor of the vehicle. This paper presents a classification of current supervisory control techniques with distinction between dynamic and static control methods; a description of the simulation software ADvanced Vehicle SimulatOR (ADVISOR) with Matlab Simulink for simulation of a rule-based control strategy, and proposed optimization methods.
Parametric Study Of Alternative Ev1 Powertrains, Adam Saplin, Andrew Meintz, Mehdi Ferdowsi
Parametric Study Of Alternative Ev1 Powertrains, Adam Saplin, Andrew Meintz, Mehdi Ferdowsi
Electrical and Computer Engineering Faculty Research & Creative Works
The General Motors (GM) EV1 is an electric vehicle originally powered by either a PbA or NiMh battery pack. This paper examines the possibility of alternative powertrain configurations. These alternatives include an ultracapacitor (UC) storage system, fuel cell system with UC storage, and a fuel cell system with a NiMh battery pack. The configurations were simulated using ADVISOR. Parametric tests were performed by varying the size of the energy storage systems. The study of these combinations is followed by an examination of the current art of the hybrid energy storage topologies used to combine battery and ultracapacitor storage. These topologies …