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Study-of-VSC-HVDC-Controller-
风电潮流的波动会引起并网系统公共连接点（PCC）电压的波动。在基于电压源换流
器的高压直流输电（VSC-HVDC）交直流混合风电场并网系统中，控制VSC-HVDC 送端站注入
到PCC 点的无功功率可以抑制电压波动。本文讨论了VSC-HVDC 的无功功率控制器和定电压控制
器抑制电压波动的原理。基于电磁暂态软件PSCAD/EMTDC 建立了并网风电场模型、VSC-HVDC
模型及控制系统模型。仿真结果表明VSC-HVDC 采用定电压控制器的并网系统能更好的抑制电
压波动，采用无功功率控制器的系统具有较好的风电场并网性能。(Reactive power variation of integration wind farm may cause point of common
coupling （PCC） voltage fluctuation. In hybrid wind farm integration system based on HVDC of
voltage source converter （VSC-HVDC）, the voltage fluctuation can be alleviated by compensating
reactive power to PCC from VSC-HVDC sending end. Therefore, the reactive power controller and the
stable voltage controller to alleviate voltage fluctuation are studied in the paper. The integration wind
farm, VSC-HVDC and their controller models are set up by PSCAD/EMTDC. The simulation results
show that the integration system adopted stable voltage controller has a better performance to alleviate
voltage fluctuation. However the system adopted reactive controller has a good wind farm integration
capability.)
- 2012-03-01 16:09:37下载
- 积分：1
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WInternet-From-thing-to-IOT
最新的物联网的前沿研究讨论，对物联网的发展有一定参考意义。(The latest cutting-edge research of Internet of things to discuss, has certain reference significance to the development of the Internet of things.)
- 2013-11-05 12:46:49下载
- 积分：1
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Leader
IT学生解惑真经，你也可能遇到这些问题，关键是如何解决，人生需要引导(IT Student FAQ Scriptures, you may also encounter these problems, the key is how to solve, need guidance in life)
- 2010-12-30 18:56:38下载
- 积分：1
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SurveyOfImageSuper-resolutionInvestigation
来自万方数据库的付费论文，详细介绍了图像超分辨率算法研究(WanFangDATA paid from the paper, detailing the image super-resolution algorithm)
- 2009-10-16 14:59:49下载
- 积分：1
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llc
四篇非常棒的关于LLC电源的硕士论文，每篇都是完整的，有空可以慢慢研读一下。后缀格式是.nh，请用cajviewer打开(4 great power on the LLC' s master' s thesis, Each are complete, the empty can take the time read about. Suffix format. Nh, please open the cajviewer)
- 2009-12-01 17:48:12下载
- 积分：1
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optical-fiber-transmission-
光纤传输特性 衰耗系数 是多模光纤和单模光纤最重要的特性参数之一，在很大程度上决定了多模和单模光纤通信的中继距离(Transmission characteristics of optical fiber attenuation)
- 2011-05-17 23:24:45下载
- 积分：1
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SIM868_RF_Design_Application Note_V1.00
SIM868_RF_Design_Application Note_V1.00.pdf
- 2018-10-29 19:53:29下载
- 积分：1
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NEFCLASS
This document explains the NEFCLASS. NEFCLASS is a Neural Fuzzy Classification model. Mainly used for the classification of data.
- 2009-10-09 00:20:43下载
- 积分：1
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biyesejitognxinxitong
中文摘要
正交频分复用（ OFDM ， Orthogonal Frequency Division
Multiplexing）是当前一种非常热门的通信技术。它即可以被看作是一种
调制技术，也可以被看作是一种复用技术。由于它具有抗多径衰落和频谱
利用率高的特点，因此被广泛应用于高速数字通信领域，比如应用于IEEE
802.11a无线局域网（WLAN）的物理层等等。
我的毕业设计的核心任务是：采用 FPGA 来实现一个基于OFDM 技术
的通信系统中的基带数据处理部分，即调制解调器。其中发射部分的调制
器包括：信道编码（Reed-Solomon 编码），交织，星座映射，FFT和插
入循环前缀等模块。我另外制作了相应的解调器，可以实现上述功能的逆
变换。
另外，我还对OFDM技术， IEEE 802.11a的标准文献，基于Simulink
的 OFDM 模型和仿真，ALTERA 公司的技术和 IP Core 的使用等方面进
行了研究。这些在文章中都有体现。
(Abstract
Orthogonal frequency division multiplexing (OFDM, Orthogonal the Frequency Division,
Multiplexing) is a very popular communication technology. It can be seen as a
Modulation technique can also be seen as a multiplexing technique. Because of its resistance to multipath fading and spectrum
High utilization characteristics, and is widely used in high-speed digital communications, such as used in IEEE
802.11a wireless LAN (WLAN) physical layer.
The core mission of my graduation project: FPGA to implement a technology based on OFDM
Communication systems in baseband data processing part, ie the modem. These emission part of the modulation
Includes: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and interpolation
Into the cyclic prefix modules. I also produced a corresponding demodulator can achieve the inverse of the above functions
Transformation.
In addition, OFDM technology, the IEEE 802.11a standard literature, based on Simulink
)
- 2012-05-20 21:58:18下载
- 积分：1
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tgh
itroduce tgh sensors and config it
- 2016-10-11 16:44:35下载
- 积分：1
