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2016 International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)
Supercapacitors, also referred as ultracapacitors, are very attractive elements to combine with batteries or fuel cells in hybrid electric vehicle applications. This is due to the fact that they present some interesting features like high power density, long life cycle and low maintenance. Accurate supercapacitors circuit models are very important because they allow optimizing the sizing and power...
Unmanned Aerial Vehicle (UAV) navigation requires Machine Vision Systems to determine physical values of near distanced objects. These machine vision systems must respond in sufficiently amount of time using less scanning data from the observed objects. A novel Technical Vision System (TVS), which uses DC motors and laser triangulation to determine spatial coordinates of these objects, is offered...
This paper introduces a new hold-up time extension circuit (HTEC) with potential use in aircraft applications. The circuit is composed of a bidirectional version of the conventional buck-boost converter operating in Boundary Conduction Mode (BCM) and the corresponding control. The converter is used to charge and discharge an auxiliary capacitor used to store the energy required to extend the operation...
Classical computing is shifted gradually into the cloud, offering completely new possibilities in information usage, computing power and application of learning algorithms. In this paper, a cloud-based architecture of control systems is investigated showing the benefit for multi-stage production systems. All sequential manufacturing and assembly processes are connected via a cloud-based architecture,...
This paper proposes a procedure for detecting the optimal speed profile of a metro vehicle. The proposed approach provides an energy-efficient driving in terms of optimal speed profile. The speed profile is obtained through the solution of a single objective optimization problem based on the minimization of the train energy consumption while satisfying specified technical and operating constraints...
This paper proposes an analytical model that considers the torque characteristics for high specific torque synchronous machine with outer rotor and a Halbach permanent magnet array. The distribution of the magnetic field in the air gap is obtained with a linear assumption by solving Neumann's problem. The analytical model presented in the paper allows preliminary estimation and fast optimization of...
The Electro-Hydrostatic Actuation (EHA) nose landing gear system is a complex multi-domain system. in order to study the coupling characteristics of EHA system, a multi-domain simulation tool is needed. In this paper, a EHA block diagram based on extraction and retraction of nose landing gear is described and established from the mathematic model, and then completed the modeling and simulation of...
While rail transportation is a clean and efficient way of transporting freight and persons, a drastic increase in traffic volume is expected in the future. At the same time, a decrease of greenhouse gas emissions is demanded by the European Union (EU) [1]. In response, the EU project MERLIN was brought to life in order to develop an architecture for smart energy management of the European railway...
Electric Road System (ERS) is a technology concept that has the potential to heavily reduce fossil fuel dependency. ERS is defined by dynamic power transfer from the road to the vehicle while the vehicle is in motion and could be achieved through different power transfer technologies from the road to the vehicle such as rail, overhead-line, and wireless solutions. The investment cost to implement...
The use of power electronic devices in more electric aircraft is pervasive, thus higher requirements of power quality have been proposed in the aircraft. Moreover, the protection and control logic of the aircraft power supply system plays an important role in aircraft systematic design, which may influence reliability, redundancy and fault tolerance. Considering the multi-domain characteristics of...
We have developed a train traction power simulator, for the purpose of estimating the effect of regenerative absorbers. And we have measured energy consumption of substations for a verification of the train traction power simulator. Measured energy consumption fluctuates by various factors. One of the factors is outside temperature, which influences auxiliary energy. This paper shows a verification...
Reduction of energy consumption is one of the recent key topics in railway sector. There are many investigations such as SiC devices, permanent magnet motors, onboard and stationary energy storage and reversible substations to absorb regenerative braking, energy efficient driving and traffic management. Multi-train simulators play an important role in evaluating the effect of these countermeasures...
More electric aircraft (MEA) include higher power ratings and more power electronics than conventional aircraft. With electrification comes increased multi-physical interaction between power systems, especially in electrical and thermal domains. It is desirable to develop an accurate and fast systemlevel model that captures the dynamics of multiple energy domains over the course of candidate mission...
The paper presents a novel robust field oriented vector control for induction generators. The proposed controller exploits the concept of indirect field orientation and guarantees asymptotic DC-link voltage regulations when DC-load is constant or slowly varying. An output-feedback linearizing Lyapunov's based technique is employed for the voltage controller design. Flux subsystem design provides robustness...
This paper presents a frequency-based approach energy management in an Electrical Hybrid Boat (EHB) application. An association of a variable speed DieselPermanent Magnet Generator (Diesel-PMG) with a supercapacitor and a battery bank is proposed to satisfy energetic demand of EHB. The supercapacitor and the battery bank are connected to DC-link via bidirectional DC/DC converters, while the variable...
The performance characteristics of a multilevel three-phase solid state shunt active filter (SAF) is explored in this study as part of a high power electrical system in more-electric-aircraft (MEA) power architecture. The proposed SAF is based on modular multilevel converter (MMC) topology that would be used to track and compensate the harmonic contents of the load currents in an aircraft power distribution...
Nowadays the amount of electrical power generated on-board ships is drastically increased, especially for the All Electric Ships (AES) where all the energy needed is supplied by the electrical power system. In this context, the traditional methods to calculate the power demand and select the size of the generation system have become inadequate, since they are based on very dated assumptions. Aim of...
This paper presents the latest functional safety innovations at the power management level of a System Basis Chip (SBC), from the development phase to system design, underscoring the link to reliability and how to enable hardware that is safety ready. The presentation will also demonstrate how using architecture developed for Automotive Safety Integrity Level (ASIL) can help improve the functional...
This paper presents a control method for a boost converter, which is connected to a dc-link of an onboard microgrid system via an LC input filter. The boost converter is considered as a load converter. This control approach is based on a Lyapunov stability analysis, where all state variables must be known. An observer is used to estimate the input current and losses in the converter. A change of load...
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