PSCAD/EMTDC是加拿大馬尼托巴高壓直流研究中心出品的一款電力系統電磁暫態仿真軟件，PSCAD（Power Systems Computer Aided Design）是用戶界面，EMTDC（Electromagnetic Transients Including DC）是內部程序。 EMTDC最初代表直流暫態，是一套基于軟件的電磁暫態模擬程序。Dennis Woodford博士于1976年在加拿大曼尼托巴水電局開發完成了EMTDC的初版，編寫這個程序的原因是因為當時現存的研究工具不能夠滿足曼尼托巴電力局對尼爾遜河高壓直流工程進行強有力和靈活的研究的要求。自此之后程序被不斷開發，至今已被廣泛地應用在電力系統許多類型的模擬研究，其中包括交流研究，雷電過電壓和電力電子學研究。EMTDC開始時在大型計算機上使用。然后在1986年被移植到Unix系統和以后的PC機上。 PSCAD代表電力系統計算機輔助設計，PSCAD的開發成功，使得用戶能更方便地使用EMTDC進行電力系統分析，使電力系統復雜部分可視化成為可能，而且軟件可以作為實時數字仿真器的前置端。可模擬任意大小的交直流系統。PSCAD V1 1988年首先在阿波羅工作站上使用，然后大約在1995年PSCAD V2開始應用。PSCAD V3以PC Windows作為平臺，在1999年面世。目前最新版本的是PSCAD V4.2.1。 用戶可以通過調用隨EMTDC 主程序一起提供的庫程序模塊或利用用戶自己開發的元部件模型有效地組裝任何可以想象出的電力系統模型和結構。EMTDC 的威力之一是可以較為簡單地模擬復雜電力系統, 包括直流輸電系統和其相關的控制系統。 采用 PSCAD/EMTDC 進行的典型模擬研究包括： ? 一般的交流電力系統電磁暫態研究 ? 直流輸電結構和控制 ? FACTS(靈活交流輸電系統)元部件模型 ? 由于故障、斷路器操作或雷電沖擊引起的電力系統的過電壓研究 ? 絕緣配合研究 ? 諧波相互影響研究 ? 靜止補償器研究 ? 非線性控制系統研究 ? 變壓器飽和研究, 如鐵磁振蕩和鐵芯飽和不穩定性研究 ? 同步發電機和感應電動機的扭矩效應和自勵磁研究 ? 陡前波分析 ? 研究當一臺多軸系發電機與串補線路或電力電子設備相互作用時的次同步諧振現象 ? 向孤立負荷送電 電力系統數字仿真實驗室使用PSCAD/EMTDC主要進行一般的交流電力系統電磁暫態研究，進行簡單和復雜電力系統的故障建模及故障仿真，分析電力系統故障電磁暫態過程。
標簽： PSCAD實驗指導教程
上傳時間： 2016-02-16
上傳用戶：xixi略
調制解調課程設計 16QAM調制解調代碼。包括星座圖，頻譜分析，誤碼率分析。-16QAM modulation and demodulation curriculum design code modulation and demodulation. Including constellation, spectrum analysis, bit error rate analysis.
上傳時間： 2016-05-02
上傳用戶：ylqylq
This document describes the use of the CRYPTO acceleration module of the EFM32 Gemstones, Including support for ECC, SHA, AES block ciphers, and authenticated encryption algorithms.
標簽： crypto dongle
上傳時間： 2016-12-28
上傳用戶：asula
Dynasty 350, 700 208/575 Volt Models W/Auto-Line Maxstar 350, 700 File: TIG (GTAW) Including Optional Cart And Cooler CE And Non-CE Models
上傳時間： 2017-03-11
上傳用戶：zosoong
This book provides an overview of recent innovations and achievements in the broad areas of cyber-physical systems (CPS), Including architecture, networking, systems, applications, security, and privacy. The book discusses various new CPS technologies from diverse aspects to enable higher level of innovation towards intelligent life. The book provides insight to the future integration, coordination and interaction between the physical world, the information world, and human beings. The book features contributions from renowned researchers and engineers, who discuss key issues from various perspectives, presenting opinions and recent CPS-related achievements.Investigates how to advance the development of cyber-physical systems Provides a joint consideration of other newly emerged technologies and concepts in relation to CPS like cloud computing, big data, fog computing, and crowd sourcing Includes topics related to CPS such as architecture, system, networking, application, algorithm, security and privacy
上傳時間： 2019-04-21
上傳用戶：danyun
The concept of smart cities emerged few years ago as a new vision for urban development that aims to integrate multiple information and communication technology (ICT) solutions in a secure fashion to manage a city’s assets. Modern ICT infrastructure and e-services should fuel sustainable growth and quality of life, enabled by a wise and participative management of natural resources to be ensured by citizens and government. The need to build smart cities became a requirement that relies on urban development that should take charge of the new infrastructures for smart cities (broadband infrastructures, wireless sensor networks, Internet-based networked applications, open data and open platforms) and provide various smart services and enablers in various domains Including healthcare, energy, education, environmental management, transportation, mobility and public safety.
上傳時間： 2020-05-25
上傳用戶：shancjb
This book provides technical information about all aspects of 3GPP LTE. The areas covered range from basic concepts to research-grade material, Including future directions. The book captures the current state of 3GPP LTE technology and serves as a source of comprehensive reference material on this subject. It has a total of 12 chapters authored by 50 experts from around the world. The targeted audi- ence includes professionals who are designers or planners for 3GPP LTE systems, researchers (faculty members and graduate students), and those who would like to learn about this field.
標簽： Technology Cellular Radio 3GPP LTE and
上傳時間： 2020-05-26
上傳用戶：shancjb
The Internet of Things is considered to be the next big opportunity, and challenge, for the Internet engineering community, users of technology, companies and society as a whole. It involves connecting embedded devices such as sensors, home appliances, weather stations and even toys to Internet Protocol (IP) based networks. The number of IP-enabled embedded devices is increasing rapidly, and although hard to estimate, will surely outnumber the number of personal computers (PCs) and servers in the future. With the advances made over the past decade in microcontroller,low-power radio, battery and microelectronic technology, the trend in the industry is for smart embedded devices (called smart objects) to become IP-enabled, and an integral part of the latest services on the Internet. These services are no longer cyber, just Including data created by humans, but are to become very connected to the physical world around us by Including sensor data, the monitoring and control of machines, and other kinds of physical context. We call this latest frontier of the Internet, consisting of wireless low-power embedded devices, the Wireless Embedded Internet. Applications that this new frontier of the Internet enable are critical to the sustainability, efficiency and safety of society and include home and building automation, healthcare, energy efficiency, smart grids and environmental monitoring to name just a few.
標簽： Embedded Internet Wireless 6LoWPAN The
上傳時間： 2020-05-26
上傳用戶：shancjb
This book has grown out of my teaching and research at the University of Surrey and out of my previous experiences in companies such as Philips, Ascom and Motorola. It is primarily intended for use by students in master’s level and enhanced final-year under- graduate courses who are specialising in communication systems and wish to understand the principles and current practices of the wireless communication channel, Including both antenna and propagation aspects
標簽： Propagation Antennas
上傳時間： 2020-05-26
上傳用戶：shancjb
Following chapter introduces the mobile communication, gives a short history of wireless communication evolution, and highlights some application scenarios predestined for the use of mobile devices. Cellular and wireless based systems related to different generations of mobile communication, Including GSM, IS-95, PHS, AMPS, D-AMPS, cdma2000 and WCDMA are also described by this Chapter. Much attention in this chapter is given to express the wireless based networks, such as Wi-Fi and WiBro/WiMax, and wireless broadcasting systems, Including DMB, DVB-H, and ISDB-T. We conclude the chapter with the future vision of mobile communication evolution
標簽： Technologies Enhanced Access Radio
上傳時間： 2020-05-27
上傳用戶：shancjb
