Application of a Robust Fuzzy Sliding Mode Controller Synthesis on a Buck-Boost DC-DC Converter Power Supply for an Electric Vehicle Propulsion System

Boumediene ALLAOUA,Abdellah LAOUFI 대한전기학회 2011 Journal of Electrical Engineering & Technology Vol.6 No.1

The development of electric vehicle power electronics system control, composed of DC-AC inverters and DC-DC converters, attract much research interest in the modern industry. A DC-AC inverter supplies the high-power motor torques of the propulsion system and utility loads of electric vehicles, whereas a DC-DC converter supplies the conventional low-power and low-voltage loads. However, the need for high-power bidirectional DC-DC converters in future electric vehicles has led to the development of many new topologies of DC-DC converters. The nonlinear control of power converters is an active research area in the field of power electronics. This paper focuses on the use of the fuzzy sliding mode strategy as a control strategy for buck-boost DC-DC converter power supplies in electric vehicles. The proposed fuzzy controller specifies changes in control signals based on the surface and knowledge on surface changes to satisfy the sliding mode stability and attraction conditions. The performance of the proposed fuzzy sliding controller is compared to that of the classical sliding mode controller. The satisfactory simulation results show the efficiency of the proposed control law, which reduces the chattering phenomenon. Moreover, the obtained results prove the robustness of the proposed control law against variations in load resistance and input voltage in the studied converter.

환경차 PE 부품 고장 검출 신뢰성 확보를 위한 HFM 로직개발

이재원(Jaewon Lee),정태환(Taehwan Jung),이영국(Youngkook Lee),정진환(Jinhwan Jung) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5

Electric driven cars are composed of electric converters (inverter, DCDC convert,), which converts high voltage and current. Distinct from conventional ECU, high voltage system and low voltage system exist in the converters. High voltage and current generates high electric and magnetic noise and require shorter response time than conventional ECU’s. As failsafe requirements for vehicle is getting higher, building reliable fault detection system becomes more important. Due to these two requirements, converters need to have a protection system with high reliability and immediacy compared to conventional ECUs. This paper investigates conventional method to detect fault signal, which was used for an internal combustion vehicle and propose a new method to have a reliability and immediacy for electric driven cars. This proposed method achieves a protection system with high reliability and immediacy using CPLD device.

슈퍼커패시터를 이용한 전기차량용 회생제동 에너지 저장장치 개발

정대원(Dae-Won Chung) 대한전기학회 2011 전기학회논문지 Vol.60 No.3

This paper presents the circuit arrangement and effective control method of regenerative energy storage system for an electric vehicle using super-capacitors as the braking energy storage element. A bi-directional controlled current flow of the DC-DC converters with the capacitor bank is connected in parallel with battery, and is controlled so that the whole of the braking energy is effectively absorbed into the capacitors and released back to the electric motor upon acceleration. The converter needs the series-parallel switching circuit for making the best use of the series capacitors and for limiting the step-up ratio of the boost converter. The proposed methods are verified by computer simulation and experimental set-up. They are usefully applied to the electric vehicles such as green cars, electric motorcycles, bike, etc which are power- supplied by the electric batteries.

The Configuration of Electric Vehicle System using Isolated DC-DC Converter for a Low-Voltage and High-Current Type Battery

Chang-Hyun Shin,Do-Yun Kim,An-Yeol Ko,Il-Kuen Won,Young-Real Kim,Chung-Yuen Won 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

In this paper, electric vehicle (EV) system using bi-directional DC-DC converter which can control the type of low-voltage and high-current battery is proposed. Proposed system uses isolated DC-DC converter for voltage compensation. The proposed topology has a form in which the inputs are connected in parallel and the outputs are connected in series in battery and isolated converters. The basic concept of dc-dc converter is integrated boost-flyback converter. This converter has the advantage of high step-up voltage by boost converter and system isolation by flyback converter. The motor driving mode for the EV can be divided into two such as motoring mode and regenerative braking mode. In the EV system, the regenerative braking control is used during deceleration. The simulation of motoring and regenerative braking mode using proposed system is performed and the result, verify the proposed control method.

A High Power Density and Efficiency Bi-Directional DC/DC Converter for Electric Vehicles

Xiaoyu Jia,Dehong Xu,Shuailin Du,Changsheng Hu,Min Chen,Ping Lin 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

In electric vehicle systems, bi-directional DC/DC converters are used to interface the battery bank with the high voltage DC bus of the inverter. The high power density and high efficiency are required for bidirectional DC/DC converters. This paper discusses the relationship between switching frequency, inductor value and passive components volume. First, the topologies of the system and the converter are presented. Then, the loss breakdown model is provided. A selection for the switching frequency is presented and an option of inductor value is provided to reduce the converter size and to keep the converter efficient. Then the converter layout which further enhances the power density is discussed. Finally, a high power density and high efficiency converter prototype is built, and the efficiency and thermal performance evaluation of the converter at different operating conditions is given.

Application of a Robust Fuzzy Sliding Mode Controller Synthesis on a Buck-Boost DC-DC Converter Power Supply for an Electric Vehicle Propulsion System

Allaoua, Boumediene,Laoufi, Abdellah The Korean Institute of Electrical Engineers 2011 Journal of Electrical Engineering & Technology Vol.6 No.1

The development of electric vehicle power electronics system control, composed of DC-AC inverters and DC-DC converters, attract much research interest in the modern industry. A DC-AC inverter supplies the high-power motor torques of the propulsion system and utility loads of electric vehicles, whereas a DC-DC converter supplies the conventional low-power and low-voltage loads. However, the need for high-power bidirectional DC-DC converters in future electric vehicles has led to the development of many new topologies of DC-DC converters. The nonlinear control of power converters is an active research area in the field of power electronics. This paper focuses on the use of the fuzzy sliding mode strategy as a control strategy for buck-boost DC-DC converter power supplies in electric vehicles. The proposed fuzzy controller specifies changes in control signals based on the surface and knowledge on surface changes to satisfy the sliding mode stability and attraction conditions. The performance of the proposed fuzzy sliding controller is compared to that of the classical sliding mode controller. The satisfactory simulation results show the efficiency of the proposed control law, which reduces the chattering phenomenon. Moreover, the obtained results prove the robustness of the proposed control law against variations in load resistance and input voltage in the studied converter.

Hybrid PWM-Resonant Converter for Electric Vehicle On-Board Battery Chargers

IEEE 2016 IEEE transactions on power electronics Vol.31 No.5

<P>A novel hybrid pulse-width-modulation resonant converter is presented in this paper for electric vehicle (EV) 3.3-kW on-board battery chargers (OBCs). While the proposed converter has all the benefits of the earlier developed hybrid converters for OBCs, the proposed converter has fewer components and achieves much lower voltage stress in the rectifying diodes compared to the earlier hybrid converters. As a result, it is possible to employ superior diodes such as Schottky barrier diodes below 300 V featuring low forward-voltage drop and better reverse-recovery for EV 3.3-kW OBC applications. In addition, the proposed converter achieves much better transformer utilization compared to the earlier hybrid converters. Due to this, the proposed converter can achieve more optimal efficiency over the overall battery charging profile. The effectiveness of the proposed converter has been verified with the experimental results under an output voltage range of 250-420-V dc at 3.3 kW.</P>

하이브리드 자동차 보조전원 공급용 DC-DC 컨버터 개발

김종철(Jong-Cheol Kim),최덕관(Deok-Kwan Choi),박해우(Hae-Woo Park) 전력전자학회 2005 전력전자학술대회 논문집 Vol.- No.-

본 논문에서는 하이브리드 자동차용 보조전원 공급이 목적인 DC-DC Converter에 대하여 기술하였다. DC-DC Converter는 차량 내의 헤드램프, 오디오, 각종 ECU등 전기/전자 부하에 전력을 공급하며 또한 12V 보조 배터리를 충전하는데 사용된다. 고주파 동작 조건하에서 유기되는 전자파 노이즈와 스위칭 손실을 저감하기 위하여 컨버터 토폴로지로 위상천이 영전압 풀브리지 방식을 적용하였으며 제어기의 용이한 보상 및 안정된 시스템 응답 특성을 위하여 슬로프 보상이 포함된 전류 모드 제어방식을 사용하였다. 정전압/정전류 충전 제어 방식은 전기부하에 안정적인 전원공급과 보조 배터리의 안정적인 충전을 보장한다. 초기의 회로 파라메타 설정 및 하드웨어 디버깅을 위하여 시뮬레이션 툴로 PSIM 6.0을 사용하였으며. DC-DC Converter에서 스위칭 소자의 발열 문제는 Thermo Tracer 장비를 사용하여 개선하였다. This paper describes the DC-DC Converter for Ancillary Power Supply in Hybrid Electric Vehicle. DC-DC Converter is used for charging 12V auxiliary battery supplying electric power to head ramp, audio, ECU etc in automobiles. used DC-DC Converter Topology is PS-ZVS FB(Phase Shifted Zero Voltage Switching Full-Bridge) to reduce switching loss and EMI noise induced by high frequency operating condition. And For easy compensation and stable system response characteristic, current mode control method including slope compensation is employed. Constant current / constant voltage charging control method guarantee stable electric charging of auxiliary battery. Simulation tool PSIM6.0 is used for initial circuit parameter settings and H/W debuging. Thermal problems of Switching components in DC-DC Converter is improved by using Thermo Tracer.

Design of Series Inductances in Triple Active Bridge Converter Using Normalization Procedure for Integrated EV and PV System

Van-Long Pham,Keiji Wada 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5

Triple active bridge (TAB) converter is one of the most useful converter circuits for electric vehicle (EV) and photovoltaic (PV) combined system. This paper proposes a design method for series inductances in TAB converter based on the normalization procedure. The design method is verified to design TAB converter for integrated EV and PV applications as 400 V - 10 kW. A prototype of TAB converter rated 100 V – 125 W is implemented to verify the proposed method. The experimental results show that the converter can work with the maximum power requirement for the full voltage range as the designed target. It shows that the proposed method can be applied to design the TAB converter.

A low-power CMOS DC-DC buck converter with on-chip stacked spiral inductor

Lee, Chan-Soo,Choi, Ho-Yong,Kim, Yeong-Seuk,Kim, Nam-Soo Emerald Group Publishing Limited 2011 Microelectronics international Vol.28 No.2

<B>Purpose</B> - The purpose of this paper is to present a fully integrated power converter. A stacked spiral inductor is applied in a voltage-mode CMOS DC-DC converter for the chip miniaturization and low-power operation. <B>Design/methodology/approach</B> - The three-layer spiral inductor is simulated with an equivalent circuit and applied to the DC-DC converter. The DC-DC buck converter has been fabricated with a standard 0.35?<I>µ</I>m CMOS process. The power converter is measured in both experiment and simulation in terms of frequency and electrical characteristics. <B>Findings</B> - Experimental results show that the converter with the stacked spiral inductor operates properly with the inductance of 7.6?nH and mW power range. The measured inductance of the stacked spiral inductor is found to be almost half of the circuit designed value because of the parasitic resistances and capacitances in the spiral inductor. <B>Originality/value</B> - This paper first introduces the application of the integrated stacked spiral inductor in DC-DC buck converter for display driver circuit, which requires a low-power operation. It also shows the fully integrated DC-DC converter for chip miniaturization.