中国电源学会电子资源平台

关键词

active gate driver

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turn-on oscillation damping

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Hybrid IGBT module

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wireless power transfer

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SiC based conv-erters

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SiC power semiconductors

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generator systems

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wind energy

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Availability

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Monte Carlo method

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photovoltaic systems

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MHz

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SiC SBD

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Totem-pole PFC

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GaN device

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coupled inductor

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LLC converter

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reliability

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soft switching

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matrix transformer

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作者

Prasad Kandula

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Deepak Divan

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Ariya Sangwongwanich

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Mingkai Mu

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Chao Fei

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Zhengyang Liu

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Qiang Li

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S.Y. Ron Hui

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Yuji Miyazaki

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Shin-ichi Kinouchi

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Hirofumi Akagi

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Tatsuhiko Fujihira

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Xingyao Zhang

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Nan Zhu

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Zheyu Zhang

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Fei(Fred) Wang

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Jan A. Ferreira

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Henk Polinder

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Udai Shipurkar

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Yongheng Yang

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获取方式

会员

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付费

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限免

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当前 1 - 9 , 共 9 条记录

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Design for Reliability of Power Electronics for Grid-Connected Photovoltaic Systems 会员

期刊论文

作者： Yongheng Yang , Ariya Sangwongwanich , Frede Blaabjerg

页码： 92 - 103

摘要

2016/01/01

7

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Power electronics is the enabling technology for optimizing energy harvesting from renewable systems like Photovoltaic(PV) and wind power systems, and also for interfacing grid-friendly energy systems. Advancements in the power semiconductor technology(e.g., wide band-gap devices) have pushed the conversion efficiency of power electronics to above 98%, where however the reliability of power electronics is becoming of high concern. Therefore, it is important to design for reliable power electronic systems to lower the risks of many failures during operation; otherwise will increase the cost for maintenance and reputation, thus affecting the cost of PV energy. Today’s PV power conversion applications require the power electronic systems with low failure rates during a service life of 20 years or even more. To achieve so, it is vital to know the main life-limiting factors of power electronic systems as well as to design for high reliability at an early stage. Knowhow of the loading in power electronics in harsh operating environments(e.g., fluctuating ambient temperature and solar irradiance) is important for life-time prediction, as the prerequisite of Design for Reliability(DfR). Hence, in this paper, the technological challenges in DfR of power electronics for grid-connected PV systems will be addressed, where how the power converters are stressed considering real-field mission profiles. Furthermore, the DfR technology will be systematically exemplified on practical power electronic systems(i.e., grid-connected PV systems).
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Past, Present and Future Trends of Non-Radiative Wireless Power Transfer 会员

期刊论文

作者： S.Y. Ron Hui

页码： 83 - 91

摘要

2016/01/01

6

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Although non-radiative wireless power transfer (WPT) was invented over a century ago, it has regained research and development interests in 1980s. Over the last 15 years, WPT has appeared as an “emerging” technology that has attracted wide-spread attention in both academia and industry. Because of the long history of WPT research and developments, researchers of the modern days often do not know some historical milestones of WPT. This paper aims at providing a brief history of some key concepts and technologies that pave the way for modern WPT research and applications. A few misconceptions of WPT technologies are particularly highlighted so that new researchers entering this research field can avoid such pitfalls. Finally, some discussions on present and future trends of WPT are included.
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A Review of Methods to Increase the Availability of Wind Turbine Generator Systems 会员

期刊论文

作者： Henk Polinder , Jan A. Ferreira , Udai Shipurkar

页码： 66 - 82

摘要

2016/01/01

8

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Availability is an important factor to be considered when designing wind turbine generator systems. The quest for increased availability is based on the following five design approaches- design for component reliability, active control for reliability, design for fault tolerance, prognostics, and design for maintainability. This paper reviews methods focussing on the first three, i.e. component reliability, active control, and fault tolerance. The paper further identifies some promising directions for further research.
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Distributed Power Electronics: An Enabler for the Future Grid 会员

期刊论文

作者： Prasad Kandula , Deepak Divan

页码： 57 - 64

摘要

2016/01/01

6

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Rapidly decreasing prices for renewable energy, increasing industrialization and electrification of the global economy, and a world-wide focus on reducing carbon emissions, is causing a reexamination of the power system of the future. A reliance on centralized planning and control, scheduled and dispatched generation, and unidirectional power flows, allowed the design of a robust and scalable power system, that did not require dynamic controls infused into the grid. As a result, the existing grid, the most complex machine built by man, has been the driver of sustained global economic growth for well over a century. Increasing levels of variable and non-dispatchable renewable energy resources mixed into the grid, bidirectional power flows resulting from a dramatic increase in the number of prosumers(‘producer+ consumer’), are adding complexity, volatility and economic inefficiency to grid operations, making grid control with conventional centralized technologies very challenging. This paper looks at the role that distributed power electronics could play in the grid of the future, allowing a cost-effective approach to grid control that can help achieve global objectives of operating with high renewable penetration.
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Turn-On Oscillation Damping for Hybrid IGBT Modules 会员

期刊论文

作者： Nan Zhu , Xingyao Zhang , Tatsuhiko Fujihira

页码： 41 - 56

摘要

2016/01/01

8

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In a hybrid IGBT module with SiC diodes as free-wheeling diodes, high frequency oscillation occurs during turn-on due to the fast switching transient of SiC diode and the resonance between circuit parasitic inductances and the junction capacitance of SiC diode. Such oscillation causes EMI noise which may affect the performance of the system. Methods to mitigate the turn-on oscillation are studied. Firstly, the effect of gate drive parameters on turn-on oscillation is investigated with respect to different gate voltages and gate charging currents. Then a novel turn-on oscillation suppression method is proposed with combination of damping circuit and active gate driver. The proposed oscillation suppression method can achieve the lowest EMI noise while remaining the advantage of lower switching loss brought by SiC diodes. Detailed theoretical analysis of the turn-on oscillation is conducted, and experimental results are given to verify the effectiveness of the proposed oscillation suppression method.
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Bidirectional Isolated Dual-Active-Bridge(DAB) DC-DC Converters Using 1.2-kV 400-A SiC-MOSFET Dual Modules 会员

期刊论文

作者： Hirofumi Akagi , Shin-ichi Kinouchi , Yuji Miyazaki

页码： 33 - 40

摘要

2016/01/01

7

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This paper describes the 750-Vdc, 100-kW, 20-kHz bidirectional isolated dual-active-bridge(DAB) dc-dc converters using four 1.2-kV 400-A SiC-MOSFET dual modules with or without Schottky barrier diodes(SBDs). When no SBD is integrated into each dual module, the conversion efficiency from the dc-input to the dc-output terminals is accurately measured to be 98.0% at the rated-power(100 kW) operation, and the maximum conversion efficiency is as high as 98.8% at 41-kW operation, excluding the gate-drive and control-circuit losses from the total power loss. The bidirectional isolated DAB dc-dc converters are so flexible that series and/or parallel connections of their individual input and output terminals make it easy to expand the voltage and current ratings for various applications such as the so-called “solid-state transformer” or “power electronic transformer.”
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Overview of Silicon Carbide Technology: Device, Converter, System, and Application 会员

期刊论文

作者： Zheyu Zhang , Fei(Fred) Wang

页码： 13 - 31

摘要

2016/01/01

6

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This paper overviews the silicon carbide(SiC) technology. The focus is on the benefits of SiC based power electronics for converters and systems, as well as their ability in enabling new applications. The challenges and research trends on the design and application of SiC power electronics are also discussed Index Terms—SiC power semiconductors, SiC based conv-erters.
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Application of GaN Devices for 1 kW Server Power Supply with Integrated Magnetics 会员

期刊论文

作者： Qiang Li , Zhengyang Liu , Chao Fei , Mingkai Mu

页码： 3 - 14

摘要

2016/01/01

6

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In today’s power electronics products, quality and reliability are given. Great emphases are placed on high efficiency, high power density and low cost. With recent advances made in gallium nitride power devices(GaNs), it is expected that GaNs will make significant impacts to all three areas mentioned above. Thanks to the absence of reverse recovery charge and smaller junction capacitances, the turn-on loss of GaN is significantly reduced and Turn-off loss and driving loss are negligible, for the first time. These desired properties coupled with ZVS techniques will drastically reduce all switching related losses, thus enabling GaN to operate at a switching frequency more than ten times higher than its silicon counterparts. To illustrate the impact of GaN on efficiency, density and even design practice, a 1 kW server power supply is demonstrated which employs an interleaved CRM totem-pole PFC followed with an LLC resonant converter. Both operate beyond 1 MHz. All magnetic components are integrated into PCB with much reduced EMI noises, thus, only a simple one-stage EMI filter is required. The system achieves a power density more than 150 W/in3, an efficiency above 96%, and much improved manufacturability with minimum labor content.
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Editorial for the Inaugural Special Issue on the Developing Trends of Power Electronics: Part 1 会员

期刊论文

作者：

页码： 1 - 2

2016/01/01

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Vol.1 No.1 2016