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2014 IEEE International Conference on Industrial Technology (ICIT)最新文献

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A novel single stage, transformerless PV inverter 一种新型的单级无变压器光伏逆变器
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894951
Vasav Gautam, Ashok Kumar, P. Sensarma
This paper presents a novel single stage, single phase, common ground, transformer-less inverter for PV application. The ideal gain of the inverter is minus infinity to plus infinity. Converter is derived from intelligent circuit connections of Ćuk converter and Watkins-Johnson converter. The control to output transfer function contains right half plane (RHP) zeros, which leads to a limited closed loop bandwidth. This limitation is overcame by current programmed controller. Analytical foundations are followed by simulation results.
本文介绍了一种新型的单级、单相、共地、无变压器的光伏逆变器。逆变器的理想增益是负无穷到正无穷。变换器是由Ćuk变换器和沃特金斯-约翰逊变换器的智能电路连接而来。输出传递函数的控制包含右半平面(RHP)零,导致闭环带宽有限。目前的程序控制器克服了这一限制。给出了分析基础和仿真结果。
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引用次数: 13
3D map building for slopes based on modeling of mobile robot 基于移动机器人建模的斜坡三维地图构建
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894905
Yo-Seop Hwang, Dong-Ju Lee, Hyun-Woo Kim, Jangmyung Lee
This paper proposes a robust 3D (dimension) map building system for a mobile robot using a LRF (Laser Range Finder). Instead of the expensive and bulky 3D laser scanner, the LRF can be utilized and installed on the mobile robot for the map building and the autonomous navigation. This research, the scanning operations are performed while the mobile robot moved on the slanted surface and ground without stops. The motion of the mobile robot is transformed into the scanning surface in the process of forming the 3D map. The experimental results reveal that the improved accuracy of navigation for the mobile robot in the real time scanning of the environment.
提出了一种基于激光测距仪的移动机器人三维(尺寸)地图生成系统。LRF可以代替昂贵而笨重的3D激光扫描仪,安装在移动机器人上进行地图绘制和自主导航。在本研究中,移动机器人在斜面和地面上不间断移动时进行扫描操作。在形成三维地图的过程中,将移动机器人的运动转化为扫描表面。实验结果表明,该方法提高了移动机器人在实时扫描环境时的导航精度。
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引用次数: 1
Design of variable output voltage power supply for power amplifier of underwater acoustic sensor 水声传感器功率放大器可变输出电压电源的设计
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894897
Seung-Soo Choi, Jaemin Shim, Jin-Yung Kim, In-Dong Kim, E. Nho, W. Moon, Won-Ho Kim
The paper proposes a new multilevel variable output voltage AC/DC Converter for power supply of power amplifiers used in underwater acoustic sensors. The proposed multilevel variable output voltage AC/DC Converter is composed of two converter sections. One as the input section is a high efficiency phase-shifted PWM full bridge DC-DC converter to get multiport power sources. The other as the output section is composed of two flying-capacitor 3-level DC-DC converters and a diode bridge circuit to get fast-response and multilevel variable output voltage for an envelope amplifier. The paper suggests the detailed circuit topology and design guideline of multilevel variable output voltage AC/DC converter. It also proposes the power balanced control method between 3-level converters and the voltage balanced algorithm for flying capacitors. Its characteristics should be verified by the detailed simulation results. It is anticipated that the proposed converter will work very well for power amplifiers used in underwater acoustic sensors.
提出了一种用于水声传感器功率放大器电源的多级可变输出电压AC/DC变换器。所提出的多电平可变输出电压AC/DC变换器由两个变换器部分组成。其中一个作为输入部分是一个高效相移PWM全桥DC-DC变换器,以获得多端口电源。另一部分作为输出部分,由两个飞电容3电平DC-DC变换器和一个二极管桥电路组成,为包络放大器提供快速响应和多电平可变输出电压。提出了多电平可变输出电压交直流变换器的详细电路拓扑结构和设计准则。提出了三电平变换器之间的功率平衡控制方法和飞行电容器的电压平衡算法。其特性需要通过详细的仿真结果来验证。预计所提出的转换器可以很好地用于水声传感器的功率放大器。
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引用次数: 2
Partial resonant ac-link converters — A review 部分谐振交流链路转换器。综述
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894875
O. Ellabban, G. M. Dousoky, H. Abu-Rub
During the last few years, the partial resonant ac-link converters have gained a significant consideration due to their outstanding advantages. Compared to other types of power converters, these ac-link converters are compact in size, reliable, efficient, and they guaranty longer life time and bidirectional power flow. In addition to that, they can be used for dc/ac, ac/dc, ac/ac, or dc/dc applications with multi-phase and/or multi-port operation. Furthermore, they provide buck/boost operations. Due to these merits, this paper will provide an up-to-date review of such converters. Their principle of operation, control, topology modifications and applications will be presented.
在过去的几年里,部分谐振交流链路变换器由于其突出的优点而得到了广泛的关注。与其他类型的电源转换器相比,这些交流链路转换器体积紧凑,可靠,高效,并保证更长的使用寿命和双向功率流。除此之外,它们还可用于dc/ac, ac/dc, ac/ac或dc/dc应用,具有多相和/或多端口操作。此外,它们还提供buck/boost操作。由于这些优点,本文将提供这种转换器的最新审查。介绍了它们的工作原理、控制、拓扑修改和应用。
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引用次数: 3
A high power and multi-outputs of AC-DC power supply design to meet 80 plus platinum and ErP requirements 高功率多输出交直流电源设计,满足80 +白金和ErP要求
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894879
Po-Chang Lu, S.-A. Liang, C. Huang
In this paper, the soft-switching multi-outputs full-bridge LLC resonant converter with matrix transformer, synchronous rectifiers and DC-DC buck converter with synchronous rectifiers is proposed. The new proposed simple structure of PC power supply with LLC multi-outputs resonant converter has the features of frequency modulation operation with fixed 50% duty cycle, zero voltage switching (ZVS), low voltage stress in the active switches, high efficiency, and excellent compatibility, which can achieve 80 Plus Platinum and 2013 ErP requirements. Energy consumptions at primary side components of full-bridge LLC and half-bridge LLC resonant converter are also compared in desktop ATX PC power supply with high power applications. Finally, the new PC topology is presented, and a specific example for 1200W PC application is designed and implemented to verify its feasibility.
本文提出了带矩阵变压器和同步整流器的软开关多输出全桥LLC谐振变换器和带同步整流器的DC-DC降压变换器。本文提出的基于LLC多输出谐振变换器的PC电源结构简单,具有50%固定占空比的调频工作、零电压开关(ZVS)、有源开关电压应力小、效率高、兼容性好等特点,可满足80 Plus白金和2013 ErP要求。比较了全桥LLC和半桥LLC谐振变换器在高功率桌面ATX PC电源中的一次侧元器件能耗。最后,提出了新的PC机拓扑结构,并设计并实现了1200W PC机的具体应用实例,验证了其可行性。
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引用次数: 0
Capacitive sensor interface with precision references 电容式传感器接口与精度参考
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894896
Ruimin Yang, M. Pertijs, S. Nihtianov, Peter Haak
This paper presents an investigation on high-precision capacitance measurement techniques which are aimed for capacitive-sensor-based displacement measurement in advanced industrial applications. The paper analyzes the interface structure and the references used in a capacitive sensor interface (CSI), which define the precision of the capacitance measurement. The trade-offs of using different types of references are discussed. Finally, to validate the analysis, a prototype IC is presented and qualified. This prototype achieves a resolution of 17.5 bit for 10 ms conversion time, while consuming 230 μA from a 3.3 V supply. The measured thermal drift of the interface is ~6 ppm/°C.
针对先进工业应用中基于电容传感器的位移测量,研究了高精度电容测量技术。分析了电容传感器接口(CSI)的接口结构和参考文献,它们决定了电容测量的精度。讨论了使用不同类型引用的利弊。最后,为了验证分析结果,给出了一个原型集成电路并进行了验证。该原型在10 ms转换时间内实现了17.5位的分辨率,同时从3.3 V电源消耗230 μA。测得界面的热漂移为~6 ppm/°C。
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引用次数: 6
Use of performance measurement methods in engineering organizations — An empirical study 绩效测量方法在工程组织中的应用——一项实证研究
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894860
M. Amberg, M. Gepp, T. Kozik, M. Foehr, J. Vollmar
Introduction: Performance measurement supports engineering organizations to effectively design, implement and control engineering improvement activities. Purpose: This contribution analyzes which performance measurement methods are used in industrial practice. The focus lies on methods used for the evaluation of investments (such as efficiency improvement programs) in engineering departments. Approach: The contribution is based on an empirical study. 56 persons working in project business were asked via a web-based questionnaire. Findings: Although the meaningfulness of holistic performance measurement is undisputed, traditional non-holistic methods prevail in industrial practice. Most engineering organizations use cost-oriented methods which do not consider the influence of engineering in the company in an adequate way. However, holistic and multi-dimensional approaches for performance measurement in engineering have gained a foothold in industrial practice. Originality: Performance measurement in engineering has been topic of very few publications yet, while studies focusing on R&D departments are numerous. Since R&D and engineering functions share some characteristics, research on R&D is also considered in this contribution.
简介:绩效测量支持工程组织有效地设计、实施和控制工程改进活动。目的:本文分析了工业实践中使用的绩效测量方法。重点在于用于评估投资(如效率改进计划)在工程部门的方法。方法:本文基于实证研究。通过网络问卷调查了56名从事项目业务的人员。研究发现:虽然整体绩效测量的意义是无可争议的,但传统的非整体方法在工业实践中占上风。大多数工程组织使用以成本为导向的方法,这些方法没有充分考虑工程在公司中的影响。然而,工程性能测量的整体和多维方法已经在工业实践中站稳了脚跟。原创性:工程领域的绩效评估一直是很少有出版物的主题,而针对研发部门的研究则数不胜数。由于研发和工程职能有一些共同的特点,本文也考虑了对研发的研究。
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引用次数: 0
Design of high-efficiency power conversion system for low-voltage electric vehicle battery charging 低压电动汽车电池充电高效功率转换系统设计
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894882
Min-Kwon Yang, W. Choi
This paper proposes a design of high-efficiency power conversion system for low-voltage electric vehicle battery charging. The proposed system consists of two power conversion stages: a single-phase ac-dc rectifier for power factor correction and an isolated dc-dc converter for battery charging. Compared to the conventional boost ac-dc rectifier, the proposed bridgeless ac-dc rectifier has advantages of reduced conduction losses, minimized device components, and improved power factor. Compared to the conventional phase-shift modulated (PSM) dc-dc converter, the proposed dc-dc converter has advantages of reduced switching losses, minimized circulating current, and improved power efficiency. As a result, the proposed system has improves the power efficiency when compared to the conventional system. All control functions are implemented in software with a singlechip microcontroller. The performance of the proposed system is evaluated throughout experimental results for an 800 W prototype for a 60 Hz/220 Vrms ac power grid.
本文提出了一种用于低压电动汽车电池充电的高效功率转换系统的设计。该系统由两个功率转换级组成:用于功率因数校正的单相ac-dc整流器和用于电池充电的隔离dc-dc转换器。与传统升压式交直流整流器相比,本文提出的无桥式交直流整流器具有传导损耗小、器件元件少、功率因数高的优点。与传统的相移调制(PSM) dc-dc变换器相比,本文提出的dc-dc变换器具有开关损耗小、循环电流小、功率效率高等优点。结果表明,与传统系统相比,该系统的功率效率有所提高。所有的控制功能都是用单片机在软件中实现的。通过对60hz / 220vrms交流电网的800w样机的实验结果来评估所提出系统的性能。
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引用次数: 5
Reduced sampling rate for cell voltage sensing in high-level Modular Multilevel Converter 高阶模块化多电平变换器中电池电压传感的采样率降低
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6894889
Jae-Jung Jung, Hak-Jun Lee, Jung-Ik Ha, S. Sul
This paper presents an estimation scheme of cell capacitor voltage for the Modular Multilevel Converter (MMC) to reduce the sampling data and its associated communication time coming from enormous number of cells in HVDC application. For the control of cell capacitor voltage of each cell, it is necessary to know the state of the voltage and it is generally measured by voltage sensors. And, to sample the voltage of each cell at every sampling instant, the associated measurement and communication hardware and signal processing time would be prohibitive as the number of cells in each arm of MMC for HVDC application is above several hundreds. This paper presents an estimation of the cell capacitor voltages using submodule grouping and adaptive observer for estimating cell capacitance in order to reduce real time voltage measurement burdens. The simulation and experimental results verify that the proposed method can guarantees the stable operation of MMC with reduced number of the cell voltage sampling.
为了减少高压直流应用中来自大量电池的采样数据及其相关的通信时间,提出了一种模块化多电平变换器(MMC)电池电容电压估计方案。对于每个电池的电池电容电压的控制,需要知道电压的状态,一般通过电压传感器来测量。而且,为了在每个采样时刻对每个电池的电压进行采样,相关的测量和通信硬件以及信号处理时间将是令人望而却步的,因为用于HVDC应用的MMC每臂的电池数量都在数百个以上。本文提出了一种利用子模块分组和自适应观测器估计电池电容电压的方法,以减轻实时电压测量的负担。仿真和实验结果表明,该方法可以在减少电池电压采样次数的情况下保证MMC的稳定运行。
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引用次数: 6
Self-starting analysis of a novel 12/14 type bearingless switched reluctance motor 新型12/14型无轴承开关磁阻电机自启动分析
Pub Date : 2014-09-11 DOI: 10.1109/ICIT.2014.6895013
Junfang Bao, Huijun Wang, Jianfeng Liu, B. Xue
In this paper, a novel 12/14 bearingless switched reluctance motor (BLSRM) is investigated. For the conventional 12/14 BLSRM, there is only a small conduction range for positive torque generation. In order to solve this problem, shifting stator pole technology is applied in the proposed structure. It is good for increasing the output torque and simplifying the control circuit. However, the proposed motor becomes a two-phase motor. As a result, the motor can't realize self-starting at some rotor positions due to torque dead point or dead zone. Therefore, in this paper, self-starting analysis of the proposed motor is firstly analyzed. A step-airgap starting method is applied to implement self-starting at all rotor positions. Furthermore, the effect of starting method on the motor performance such as torque and suspending force is also investigated by means of finite element analysis (FEA). Finally, surface response method and genetic algorithm are employed to optimize structure parameter to improve the motor performance.
研究了一种新型的12/14无轴承开关磁阻电动机(BLSRM)。对于传统的12/14 BLSRM,只有一个小的传导范围产生正转矩。为了解决这一问题,在该结构中采用了定子移极技术。这有利于增大输出转矩,简化控制电路。然而,所提出的电机变成了两相电机。导致电机在某些转子位置由于转矩死点或死区而无法实现自启动。因此,本文首先对所提出的电机进行自启动分析。采用步进气隙起动法,实现了转子各位置的自起动。此外,还利用有限元分析方法研究了起动方式对电机转矩和悬浮力等性能的影响。最后,采用表面响应法和遗传算法对结构参数进行优化,提高电机性能。
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引用次数: 6
期刊
2014 IEEE International Conference on Industrial Technology (ICIT)
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