• Title/Summary/Keyword: Hybrid electronic vehicle

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Development and Optimization of Engine Module for Hybrid System Simulator (하이브리드 시스템 시뮬레이터용 엔진 모듈 개발과 최적화에 관한 연구)

  • Jeon, Dae-Il;Gong, Ho-Jeong;Hwang, In-Goo;Myung, Cha-Lee;Park, Sim-Soo
    • Transactions of the Korean Society of Automotive Engineers
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    • v.18 no.1
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    • pp.14-22
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    • 2010
  • Hybrid Electronic Vehicle (HEV) is one of the solutions of high oil price and environment problem. Recently, study of HEV is important for automobile industry. However HEV has a lot of components and there are many cases for assembling, it's impossible to test results from assembling by using real vehicles. To solve this problem, hybrid system simulator is required. The purpose of this study is to develop and optimize of engine module for hybrid system simulator. The commercial 1-D engine simulation program, WAVE is used to get the engine capacity and performance data and 1-D simulation model of base engine is compared with engine experiment results. Using the data, the engine module is developed based on the MATLAB Simulink. There are blocks of base engine, Single-CVVT engine and Dual-CVVT engine. The effect of acceleration and deceleration is applied to each engine block. In addition, the control and processing logics for CIS technology are developed. Finally the simulator operates FTP-72 mode test.

Research on operation stability of 7kW Inverter for short distance vehicle using SiC Hybrid module (SiC 하이브리드 모듈을 적용한 근거리용 7kW Inverter 동작 안정성에 대한 연구)

  • Jeon, Joon-Hyeok;Kyoung, Sin-Su;Kim, Hee-Jun
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.12 no.5
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    • pp.499-506
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    • 2019
  • This paper is concerned with the operating stability of 7kW inverter using SIC hybrid module and verifies the validity of the simulation results by comparing the result of the loss equation and the simulation result, Simulation results using Si module and SiC hybrid module are compared to compare switch loss and diode loss. Through the loss equation calculation, the conduction loss of SiC Hybrid module is 168W, switching loss is 9.3W, diode loss is 10.5nW, When compared with the simulation results, similar values were shown. As a result of comparing the simulation results of the Si module and the SiC Hybrid module, The total device loss of the Si module was 246.2W, and the total device loss of the SiC Hybrid module was 189.9W. The loss difference was 56.3W, which was about 0.8W. thereby verifying the reverse recovery characteristics of the SiC SBD. In addition, temperature saturation test was conducted to confirm the stability of SiC Hybrid module and Si module under high temperature saturation, In the case of the Si module, the output power was stopped at 4kW, and the SiC Hybrid module was confirmed to operate at 7kW. Based on this, an efficiency graph and a temperature graph are presented, and the Si module is graphed up to 4kW and the SiC Hybrid module is graphed up to 7kW.

Orthogonal variable spreading factor encoded unmanned aerial vehicle-assisted nonorthogonal multiple access system with hybrid physical layer security

  • Omor Faruk;Joarder Jafor Sadiqu;Kanapathippillai Cumanan;Shaikh Enayet Ullah
    • ETRI Journal
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    • v.45 no.2
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    • pp.213-225
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    • 2023
  • Physical layer security (PLS) can improve the security of both terrestrial and nonterrestrial wireless communication networks. This study proposes a simplified framework for nonterrestrial cyclic prefixed orthogonal variable spreading factor (OVSF)-encoded multiple-input and multiple-output nonorthogonal multiple access (NOMA) systems to ensure complete network security. Various useful methods are implemented, where both improved sine map and multiple parameter-weighted-type fractional Fourier transform encryption schemes are combined to investigate the effects of hybrid PLS. In addition, OVSF coding with power domain NOMA for multi-user interference reduction and peak-toaverage power ratio (PAPR) reduction is introduced. The performance of $\frac{1}{2}$-rated convolutional, turbo, and repeat and accumulate channel coding with regularized zero-forcing signal detection for forward error correction and improved bit error rate (BER) are also investigated. Simulation results ratify the pertinence of the proposed system in terms of PLS and BER performance improvement with reasonable PAPR.

Fuzzy-Sliding Mode Speed Control for Two Wheels Electric Vehicle Drive

  • Nasri, Abdelfatah;Hazzab, Abdeldjabar;Bousserhane, Ismail Khalil;Hadjeri, Samir;Sicard, Pierre
    • Journal of Electrical Engineering and Technology
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    • v.4 no.4
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    • pp.499-509
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    • 2009
  • Electric vehicles (EV) are developing fast during this decade due to drastic issues on the protection of environment and the shortage of energy sources, so new technologies allow the development of electric vehicles (EV) by means of electric motors associated with static converters. The proposed propulsion system consists of two induction motors (IM) that ensure the drive of the two back driving wheels. The electronic differential system ensures the robust control of the vehicle behavior on the road. It also allows controlling, independently, every driving wheel to turn at different speeds in any curve. This paper presents the study of an hybrid Fuzzy-sliding mode control (SMC) strategy for the electric vehicle driving wheels, stability improvement, in which the fuzzy logic system replace the discontinuous control action of the classical SMC law. Our electric vehicle fuzzy-sliding mode control's simulated in Matlab SIMULINK environment, the results obtained present the efficiency of the proposed control with no overshoot, the rising time is perfected with good disturbances rejections comparing with the classical control law.

A Study on OBC Integrated 1.5kW LDC Converter for Electric Vehicle. (전기자동차용 OBC 일체형 1.5kW급 LDC 컨버터에 대한 연구)

  • Kim, Hyung-Sik;Jeon, Joon-Hyeok;Kim, Hee-Jun;Ahn, Joon-Seon
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.12 no.4
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    • pp.456-465
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    • 2019
  • PHEV(Plug in Hybrid Electric Vehicle) and BEV(Battery Electric Vehicle) equip high voltage batteries to drive motor and vehicle electric system. Those vehicle require OBC(On-Board Charger) for charging batteries and LDC(Low DC/DC Converter) for converting from high voltage to low voltage. Since the charger and the converter actually separate each other in electrical vehicles, there is a margin to reduce the vehicle weight and area of installation by integration two systems. This paper studies a 1.5kW LDC converter that can be integrated into an OBC using an isolated current-fed converter by simplifying the design of LDC transformers. The proposed LDC can control the final output voltage of the LDC by using a fixed arbitrary output voltage of the bidirectional buck-boost converter, so that Compared to the existing OBC-LDC integrated system, it has the advantage of simplifying the transformer design considering the battery voltage range, converter duty ratio and OBC output turn ratio. Prototype of the proposed LDC was made to confirm normal operation at 200V ~ 400V input voltage and maximum efficiency of 91.885% was achieved at rated load condition. In addition, the OBC-LDC integrated system achieved a volume of about 6.51L and reduced the space by 15.6% compared to the existing independent system.

Fuel Cell Hybrid Power System for Railway Vehicles (철도차량용 연료전지 하이브리드 동력시스템)

  • Kim, Young-Ryul;Park, Young-Ho;Kim, Young-Soo
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.855-861
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    • 2008
  • The development of fuel cell hybrid power system, as a next generation power system for solving the global warming, has been being made actively progress around passenger vehicles. Also, in case of railway vehicles in unelectrified railway line, the adoption of fuel cell hybrid power system is being studied around well-known manufacturers. This paper introduces both the configuration and the control strategy of fuel cell hybrid power system in order to apply to a light electronic railway vehicle having a repeated driving pattern of acceleration, coasting and deceleration and provides simulation results to evaluate their validity.

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Development and Optimization of the Hybrid Engine System Model to Improve the Fuel Economy (연비향상을 위한 하이브리드 엔진 시스템 모델 개발과 최적화에 관한 연구)

  • Lee, Dong-Eun;Hwang, In-Goo;Jeon, Dae-Il;Park, Sim-Soo
    • Transactions of the Korean Society of Automotive Engineers
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    • v.16 no.6
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    • pp.65-73
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    • 2008
  • The purpose of this study is development of universal engine model for integrated Hybrid Electric Vehicle (HEV) simulator and a optimization of engine model. The engine model of this study is based on the MATLAB Simulink for universal and include engine fuel economy technologies for HEV. Various engine fuel economy technologies for HEV is estimated by commercial engine 1-D simulation program - WAVE. And, the 1-D simulation model of base version is compared with engine experiment result. The analyzed engine technologies with 1-D simulation are Dual-CVVT, Atkinson-Cycle and Cylinder-Deactivation System. There are improvement of fuel economy and power performance with Dual-CVVT model at part load and full load, pumping loss reduction with Cylinder-Deactivation System at idle and regeneration. Each estimated technologies are analyzed by 1-D simulation on all operation region for base data to converse simulink. The simulink based engine model maintains a signal with ECU for determination of engine operation point.

Design of an integrated Chassis Controller for the Improvement of Vehicle Dynamic Characteristics (차량의 동특성 향상을 위한 통합 샤시 제어기의 설계)

  • Lee, Sin-Won;An, Tae-Hwan;An, Hyeon-Sik;Lee, Un-Seong;Kim, Do-Hyeon;Kim, Sang-Seop
    • Journal of the Korean Institute of Telematics and Electronics S
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    • v.35S no.9
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    • pp.43-52
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    • 1998
  • In this paper, a novel type of an integrated controller is designed for vehicles equipped with active classis systems to improve vehicle stability, handling, and ride comfort. The hybrid fuzzy logic controller consists of a fuzzy logic controller, a skyhook controller, an attitude controller, and a roll moment distribution controller, and these controllers are used with a proper combination which is determined by the integrated control logic based on driving conditions of a vehicle. It is shown by simulations using MATRIXx/SYSTEMBBUILD software that ride comfort, handling, and active safety are improved for a 16 degree-of-freedom vehicle dynamic model.

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Development of BMS applying to LPB Pack in Bimodal Tram (바이모달트램용 LPB팩에 적용될 Battery Management System 개발)

  • Lee, Kang-Won;Chang, Se-Ky;Nam, Jong-Ha;Kang, Duk-Ha;Bae, Jong-Min
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2009.06a
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    • pp.477-477
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    • 2009
  • Bimodal Tram developed by KRRI is driven by a series Hybrid propulsion system which has both the CNG engine, generator and LPB(Lithium Polymer Battery) pack. It has three driving modes; Hybrid mode, Engine mode and Battery mode. Even in case of Battery mode, LPB pack to get enough power to drive the vehicle only by itself onsists of 168 LPB cells(80Ah per lcell), 650V. It is important thing to manage LPB pack in a right way, which will extend the lifetime of LPB cells and operate in the hybrid mode effectively. This paper has shown the development of battery management system(12 BMS, 1 BMS per 14cells) to manage LPB pack which is connected with CAN(Controller Area Network) each other and measure the voltage, current, temperature and also control the cooling fan inside of LPB pack. Using the measured data, BMS can show the SOC(State of Charge), SOH(State of Health) and other status of LPB pack including of the cell balancing.

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Development of an Advanced Hybrid Energy Storage System for Hybrid Electric Vehicles

  • Lee, Baek-Haeng;Shin, Dong-Hyun;Song, Hyun-Sik;Heo, Hoon;Kim, Hee-Jun
    • Journal of Power Electronics
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    • v.9 no.1
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    • pp.51-60
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    • 2009
  • Hybrid Electric Vehicles (HEVs) utilize electric power as well as a mechanical engine for propulsion; therefore the performance of HEV s can be directly influenced by the characteristics of the Energy Storage System (ESS). The ESS for HEVs generally requires high power performance, long cycle life and reliability, as well as cost effectiveness. So the Hybrid Energy Storage System (HESS), which combines different kinds of storage devices, has been considered to fulfill both performance and cost requirements. To improve operating efficiency, cycle life, and cold cranking of the HESS, an advanced dynamic control regime with which pertinent storage devices in the HESS can be selectively operated based on their status was presented. Verification tests were performed to confirm the degree of improvement in energy efficiency. In this paper, an advanced HESS with improved an Battery Management System (BMS), which has optimal switching control function based on the estimated State of Charge (SOC), has been developed and verified.