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Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)最新文献

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Design of lateral IGBT protection circuit for smart power integration 智能电源集成的横向IGBT保护电路设计
Junyang Luo, Y.C. Liang, B. Cho
Monolithic integration of lateral insulated gate bipolar transistor (LIGBT) in power integrated circuits is a current research topic. The overcurrent protection scheme is usually necessary to be built as part of the functions in power integrated circuits. The protection circuit requires to distinguish various fault conditions and to react differently based on the device safe operating area (SOA) limitation. At the same time, the circuit should also be relatively concise and suitable for integration. In this paper, a concise gate drive protection circuit is proposed to provide the complete function of overcurrent protection for LIGBT. The performance of the circuit was verified with experimental results. The implementation of the proposed circuit on lateral IGBT is also discussed and the simulation results are presented.
横向绝缘栅双极晶体管(light)在功率集成电路中的单片集成是当前的一个研究课题。过流保护方案通常需要作为电源集成电路功能的一部分来构建。保护电路需要区分各种故障情况,并根据设备安全操作区域(SOA)的限制做出不同的反应。同时,电路也要相对简洁,适合集成。本文提出了一种简洁的栅极驱动保护电路,提供了完整的过流保护功能。实验结果验证了该电路的性能。讨论了该电路在横向IGBT上的实现,并给出了仿真结果。
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引用次数: 3
Characteristics of two-phase levitated linear induction motor 两相悬浮式直线感应电动机的特性
K. Tachino, K. Amei, T. Maeda, M. Sakui
This paper presents characteristics of a two-phase levitated linear induction motor (LIM). LIMs are used in many industries as a transportation system. In a semiconductor factory, to produce dust during conveyance is not allowed. We developed the linear induction motor, used at such a factory. This system is AC induction type, and its secondary conductor completely levitates and moves above a stator by noncontact. In this paper, we propose a secondary conductor using the self-shading effect for stability levitation. The validity of the proposed method is demonstrated by comparing the calculated results of finite element method with experiments.
本文介绍了一种两相悬浮式直线感应电动机的特性。lim作为运输系统在许多行业中使用。在半导体工厂,运输过程中不允许产生粉尘。我们开发了直线感应电动机,在这样一个工厂使用。该系统为交流感应型,其次级导体完全悬浮在定子之上,以非接触方式移动。本文提出了一种利用自遮蔽效应实现稳定悬浮的二次导体。将有限元计算结果与实验结果进行对比,验证了该方法的有效性。
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引用次数: 5
A novel machineless dynamometer for load testing three-phase induction motors 一种用于三相感应电动机负载测试的新型无机械测功机
C. Grantham, H. Tabatabaei-Yazdi
This paper describes a novel method for rapid full load efficiency evaluation of three phase induction motors using a synthetic loading technique, without the need to connect a load to the machine's drive shaft. The new method uses a digital signal processor (DSP) controlled high switching frequency power electronic inverter to synthetically load the induction machine, while using a new real-time data acquisition system to accurately determine and record the machine's performance. The method proposed considerably reduces the testing time compared with conventional methods of efficiency measurement and the accuracy of the result is maintained. Moreover the use of the power electronic inverter allows a comprehensive control over all the quantities which determine the rate at which the power is dissipated inside the induction machine. This method can also directly quantify rotational losses of the induction motor under test.
本文介绍了一种利用综合加载技术快速评估三相异步电动机满载效率的新方法,该方法无需在机器的传动轴上连接负载。该方法采用数字信号处理器(DSP)控制的高开关频率电力电子逆变器对感应电机进行综合加载,同时采用新型实时数据采集系统对感应电机的性能进行准确判断和记录。与传统的效率测量方法相比,该方法大大缩短了测试时间,并保持了测试结果的准确性。此外,电力电子逆变器的使用允许对决定功率在感应电机内部耗散速率的所有数量进行全面控制。该方法还可以直接量化被测异步电动机的旋转损耗。
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引用次数: 9
A new drive system of a brushless motor reducing power consumption and motor vibration simultaneously 一种新型无刷电机驱动系统,同时降低了电机的功耗和振动
Makoto Gotou, Masaaki Ochi
A new drive system of a DC permanent magnet brushless motor is developed. The developed drive system has a unique configuration which produces smooth three-phase currents by a simple PWM operation of only low-side power amplifiers, thereby reducing power consumption and motor vibration simultaneously. The developed drive system has many advantages; (1) low power consumption (e.g. it consumes only 40% of the power of a conventional linear drive system); (2) small vibration (e.g. the vibration level of it is made less by 12 dB than that of a conventional 120/spl deg/ PWM drive system); and (3) simple configuration. The paper describes the configuration and the experimental results of the developed drive system, which verify the above advantages.
研制了一种新型直流永磁无刷电机驱动系统。开发的驱动系统具有独特的配置,仅通过低侧功率放大器的简单PWM操作产生平滑的三相电流,从而同时降低功耗和电机振动。开发的驱动系统具有许多优点;(1)功耗低(如功耗仅为传统直线驱动系统的40%);(2)振动小(与传统的120/spl度/ PWM驱动系统相比,振动水平降低了12 dB);(3)配置简单。本文介绍了所开发的驱动系统的结构和实验结果,验证了上述优点。
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引用次数: 4
Several schemes of alleviating bus voltage stress in single stage power factor correction converters 减轻单级功率因数校正变换器母线电压应力的几种方案
S. Luo, Huai Wei, G. Zhu, I. Batarseh
High DC bus voltage stress is an important issue for the single stage PFC converters in practical application. This paper analyzes the inherent reason of the high bus voltage stress of single-stage power-factor-correction (PFC) AC/DC converters. Four possible resolving schemes are analyzed and discussed, and some of practical implementation circuits topologies are also given. Theoretical analysis and simulation results show that the both series-charging, parallel-discharging capacitors (SCPDC) scheme and bus-voltage-feedback (BVF) method are deemed to be more viable than the other two methods.
直流母线电压应力高是单级PFC变换器在实际应用中的一个重要问题。分析了单级功率因数校正(PFC) AC/DC变换器母线电压应力高的内在原因。分析和讨论了四种可能的解析方案,并给出了一些实用的实现电路拓扑。理论分析和仿真结果表明,串联充电并联放电电容器(SCPDC)方案和母线电压反馈(BVF)方法比其他两种方法更可行。
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引用次数: 30
Assessment of stability effects of HVDC link by an improved energy function method 用改进的能量函数法评价高压直流输电线路的稳定效果
T. S. Chung
This paper proposes new techniques for the fast transient stability analysis of power systems embedded with HVDC (high voltage DC link) based on a corrected transient energy function approach. The method is based on an innovative iteration approach used to evaluate the AC terminal voltages of HVDC links at each integration step and is developed for enhancing the efficiency of stability trajectory calculations. In addition, the corrected energy function approach with corrected transient energy and corrected potential energy boundary surface is used in the AC/DC system for the estimation of transient energy margin. The approach provides more accurate results in transient stability assessment than conventional hybrid methods. Simulation results on a 36-bus, 8-generator test AC/DC power system are presented to show that the approach offers a promising tool to estimate transient stability limit conditions for AC/DC systems.
本文提出了一种基于修正暂态能量函数法的嵌入式高压直流输电系统暂态稳定性快速分析新方法。该方法基于一种创新的迭代方法,用于评估HVDC链路在每个积分步骤中的交流端子电压,并为提高稳定轨迹计算的效率而开发。此外,在交/直流系统中,采用校正暂态能量和校正势能边界面的校正能量函数法估计暂态能量余量。与传统的混合方法相比,该方法提供了更准确的暂态稳定评估结果。在一个36总线、8台发电机的交直流系统上的仿真结果表明,该方法为估计交直流系统的暂态稳定极限条件提供了一种很有前途的工具。
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引用次数: 2
Studies of self-driven synchronous rectification in low voltage power conversion 低压电源转换中自驱动同步整流的研究
Xie Xuefei, C. H. Yan, M. Pong
In self-driven synchronous rectification circuit, transformer secondary winding is often used directly to drive synchronous MOSFETs. Transformer leakage inductance and other parasitic inductance in the rectification loop are found to contribute to rectification loss. The body diode of synchronous rectifiers is on during current commutation in two SRs because reflected secondary voltage falls on these parasitic inductances instead of the gate terminal of SR in this duration. Body diode turn on greatly degrades the performance of SR. The case is worse in high frequency, high current applications. Detailed analysis of this phenomenon is given in the paper. An equivalent model is established to analyze and evaluate the performance of SR with the existence of parasitic inductance. Simulation and experiment waveforms confirm the model and analysis. Additionally, optimal driving waveforms for SRs are discussed. Two improved gate drive methods are presented and compared.
在自驱动同步整流电路中,常直接使用变压器二次绕组驱动同步mosfet。发现整流回路中的变压器漏感和其他寄生电感是造成整流损耗的主要原因。同步整流器的主体二极管在两个SR的电流换流期间处于导通状态,因为在此期间反射的二次电压落在这些寄生电感上,而不是SR的栅极端。体二极管导通会大大降低sr的性能,在高频、大电流应用中情况更糟。本文对这一现象进行了详细的分析。建立了等效模型,分析和评价了寄生电感存在时SR的性能。仿真和实验波形验证了模型和分析结果。此外,还讨论了SRs的最佳驱动波形。提出并比较了两种改进的栅极驱动方法。
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引用次数: 21
Investigation of direct-frequency converter 直接变频器的研究
Peng Huaidong, L. Xiaofan
The direct-frequency converter (DFC) has more advantages than the traditional DC-link AC-DC-AC frequency converter. This paper introduces a direct-frequency converter using bi-directional switches. Its operation principle is discussed in detail and the ripple component attended by aborting the DC-link in the equivalent input voltage is analyzed. A DPWM algorithm is employed to eliminate its influence on the output voltage. Computer simulation using MATLAB/SIMULINK is also presented to examine the performance of the algorithm. At last experimental results on a three-phase 50 Hz AC input, single-phase 400 Hz AC output circuits using the TMS320F240 as the controller are provided.
直接变频器(DFC)比传统的DC-link AC-DC-AC变频器具有更多的优点。本文介绍了一种采用双向开关的直接变频器。详细讨论了其工作原理,并分析了在等效输入电压下中断直流链路所引起的纹波分量。采用DPWM算法消除其对输出电压的影响。利用MATLAB/SIMULINK进行了计算机仿真,验证了该算法的性能。最后给出了采用TMS320F240作为控制器的三相50hz交流输入、单相400hz交流输出电路的实验结果。
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引用次数: 0
Study of power quality compensators in power system 电力系统电能质量补偿器的研究
Z. Jianfeng, Jiang Ping, Li Naihu, Tang Guoqing, Deng Junxiong
This paper discusses the different structures of power quality compensator (PQC), and mainly illustrates the influences on its voltampere (VA) rating and compensatory performance, which is exhibited under the condition that the AC input of main circuit's DC supply is extracted from the system or the load side. Meantime, the impacts on PQC are also analyzed when a three-phase rectifier or PWM rectifier is adopted as the DC supply. The simulation results verify the correctness of the theoretical analysis.
本文讨论了电能质量补偿器(PQC)的不同结构,重点阐述了主电路直流电源的交流输入从系统或负载侧提取时对其伏安额定值和补偿性能的影响。同时,分析了采用三相整流器或PWM整流器作为直流电源对PQC的影响。仿真结果验证了理论分析的正确性。
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引用次数: 4
Novel carrier PWM scheme to control neutral point voltage fluctuations in three-level voltage source inverter 提出了一种新的载波PWM控制三电平电压源逆变器中性点电压波动的方案
K.R.M.N. Ratnayake, Y. Murai, T. Watanabe
This paper presents a simple PWM technique to control neutral point voltage of the multi-level inverter. The multi-level power conversion systems have been receiving increasing attention, especially for high power applications. The proposed method employs a modified version of multi-level sinusoidal pulse width modulation (SPWM) scheme. This method avoids the requirement of high capacity DC link capacitors, which are employed in most of the present three-level inverter industrial applications. The new PWM scheme is less complex than most of the other available neutral point clamping control methods.
本文提出了一种简单的PWM技术来控制多电平逆变器的中性点电压。多级功率转换系统越来越受到人们的关注,特别是大功率应用。该方法采用一种改进的多级正弦脉宽调制(SPWM)方案。这种方法避免了目前大多数三电平逆变器工业应用中对大容量直流链路电容器的要求。新的PWM方案比大多数其他可用的中性点箝位控制方法更简单。
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引用次数: 4
期刊
Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475)
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