Electric distribution networks are critical parts of power delivery systems. In recent years, many new technologies and distributed energy resources have been inte- grated into these networks. To provide Electricity at the possible lowest cost and at required quality, long-term planning is essential for these networks. In distribution planning, optimal location and size of necessary upgrades are determined to satisfy the demand and the technical requirements of the loads and to tackle uncertainties associated with load and distributed energy resources.
標(biāo)簽： Distribution Electric Planning Network
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
With the rapid development of Electric vehicles (EVs) as well as the promotion and application of vehicle-to-grid (V2G) technologies, EVs charging loads, as flexible loads, have the potential to participate in the grid services, including peak shaving and valley filling, frequency regulation (FR), emergency power, energy market participation, and so on. Therefore, great attention has been paid to EVs and V2G. Focusing on the interactions between EVs and power system, this book aims to bring readers with basic knowledge of Electrical engineering promptly to the frontier of the EVs’ influence on power system and environment. This book may serve as a reference for scientists, Electrical engineers, and postgraduate students majoring in Electrical engineering or other related fields.
標(biāo)簽： Electric Vehicles System Power on
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
Plug in Electric Vehicles (PEVs) use energy storages usually in the form of battery banks that are designed to be recharged using utility grid power. One category of PEVs are Electric Vehicles (EVs) without an internal-combustion (IC) engine where the energy stored in the battery bank is the only source of power to drive the vehicle. These are also referred as Battery Electric Vehicles (BEVs). The second category of PEVs, which is more commercialized than the EVs, is the Plug in
標(biāo)簽： Electric Vehicles Grids Smart Plug In in
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
Plug in Electric Vehicles (PEVs) use energy storages usually in the form of battery banks that are designed to be recharged using utility grid power. One category of PEVs are Electric Vehicles (EVs) without an Internal-Combustion (IC) engine where the energy stored in the battery bank is the only source of power to drive the vehicle. These are also referred as Battery Electric Vehicles (BEVs). The second category of PEVs, which is more commercialized than the EVs, is Plug in Hybrid Electric Vehicles (PHEVs) where the role of the energy storage is to supplement the power produced by the IC engine.
標(biāo)簽： Electric Vehicles Plug In
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
Plug in Electric Vehicles (PEVs) use energy storages usually in the form of battery banks that are designed to be recharged using utility grid power. One category of PEVs are Electric Vehicles (EVs) without an Internal-Combustion (IC) engine where the energy stored in the battery bank is the only source of power to drive the vehicle. These are also referred to as Battery Electric Vehicles (BEVs). The second category of PEVs, which is more commercialized than the EVs, is the Plug in Hybrid Electric Vehicles (PHEVs) where the role of energy storage is to supplement the power produced by the IC engine.
標(biāo)簽： Electric Vehicles Smart Grids in
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
The chief objective of Electric Machinery continues to be to build a strong foundation in the basic principles of electromechanics and Electric machinery. Through all of its editions, the emphasis of Electric Machinery has been on both physical insight and analytical techniques. Mastery of the material covered will provide both the basis for understanding many real-world Electric-machinery applications as well as the foundation for proceeding on to more advanced courses in Electric machinery design and control.
標(biāo)簽： Machinery Electric 6th ed
上傳時(shí)間： 2020-06-10
上傳用戶：shancjb
在目前全球能源危機(jī)和溫室效應(yīng)越來越嚴(yán)重的情況下，電動(dòng)車(Electric Vehicle)以其無污染、低噪聲、效率高，便于操作等優(yōu)點(diǎn)，越來越受到人們的青睞。本課題與華中科技大學(xué)辜承林教授聯(lián)合，為蘇州益高電動(dòng)車輛制造有限公司設(shè)計(jì)旅游車無刷電機(jī)驅(qū)動(dòng)系統(tǒng)。課題結(jié)合現(xiàn)代CPU技術(shù)、數(shù)字技術(shù)和電力電子技術(shù)，設(shè)計(jì)了一款以無位置傳感器無刷直流電機(jī)為動(dòng)力的大功率汽車輪轂驅(qū)動(dòng)控制器。 本課題采用辜老師設(shè)計(jì)的“橫向磁通無刷直流電動(dòng)機(jī)”為控制對(duì)象。本文首先分析了無刷直流電機(jī)的數(shù)學(xué)模型和無位置傳感器的反電勢過零點(diǎn)檢測的基本原理，從整體上對(duì)控制系統(tǒng)的各個(gè)方面進(jìn)行了討論并確定了整體設(shè)計(jì)方案。在課題中，本人采用DSP 2407A作為控制核心，以功率MOS管為逆變器件，研制出系統(tǒng)硬件，用C語言編制了系統(tǒng)軟件。鑒于該課題在大電流等級(jí)的無刷直流電機(jī)應(yīng)用中，國內(nèi)外尚無先例，本項(xiàng)目在開發(fā)實(shí)驗(yàn)中，對(duì)無位置傳感器無刷電機(jī)的起動(dòng)和反電勢過零檢測作了大量的研究工作，取得許多有益的科研實(shí)踐經(jīng)驗(yàn)。通過對(duì)電機(jī)的起動(dòng)過程和位置檢測方法進(jìn)行的一些有效改進(jìn)措施，使得電機(jī)達(dá)到較好的運(yùn)行性能和操控特性。 實(shí)驗(yàn)結(jié)果表明本項(xiàng)目設(shè)計(jì)方案有效可行，研制的無位置傳感器無刷直流電機(jī)控制器達(dá)到設(shè)計(jì)的預(yù)期基本性能指標(biāo)。
標(biāo)簽： 無刷直流電機(jī) 電動(dòng)汽車 驅(qū)動(dòng)控制器
上傳時(shí)間： 2013-06-10
上傳用戶：yx007699
在目前全球能源危機(jī)和溫室效應(yīng)越來越嚴(yán)重的情況下，電動(dòng)車(Electric Vehicle)以其無污染、低噪聲、效率高，便于操作等優(yōu)點(diǎn)，越來越受到人們的青睞。本課題與華中科技大學(xué)辜承林教授聯(lián)合，為蘇州益高電動(dòng)車輛制造有限公司設(shè)計(jì)旅游車無刷電機(jī)驅(qū)動(dòng)系統(tǒng)。課題結(jié)合現(xiàn)代CPU技術(shù)、數(shù)字技術(shù)和電力電子技術(shù)，設(shè)計(jì)了一款以無位置傳感器無刷直流電機(jī)為動(dòng)力的大功率汽車輪轂驅(qū)動(dòng)控制器。 本課題采用辜老師設(shè)計(jì)的“橫向磁通無刷直流電動(dòng)機(jī)”為控制對(duì)象。本文首先分析了無刷直流電機(jī)的數(shù)學(xué)模型和無位置傳感器的反電勢過零點(diǎn)檢測的基本原理，從整體上對(duì)控制系統(tǒng)的各個(gè)方面進(jìn)行了討論并確定了整體設(shè)計(jì)方案。在課題中，本人采用DSP 2407A作為控制核心，以功率MOS管為逆變器件，研制出系統(tǒng)硬件，用C語言編制了系統(tǒng)軟件。鑒于該課題在大電流等級(jí)的無刷直流電機(jī)應(yīng)用中，國內(nèi)外尚無先例，本項(xiàng)目在開發(fā)實(shí)驗(yàn)中，對(duì)無位置傳感器無刷電機(jī)的起動(dòng)和反電勢過零檢測作了大量的研究工作，取得許多有益的科研實(shí)踐經(jīng)驗(yàn)。通過對(duì)電機(jī)的起動(dòng)過程和位置檢測方法進(jìn)行的一些有效改進(jìn)措施，使得電機(jī)達(dá)到較好的運(yùn)行性能和操控特性。 實(shí)驗(yàn)結(jié)果表明本項(xiàng)目設(shè)計(jì)方案有效可行，研制的無位置傳感器無刷直流電機(jī)控制器達(dá)到設(shè)計(jì)的預(yù)期基本性能指標(biāo)。
標(biāo)簽： 無刷直流電機(jī) 電動(dòng)汽車 驅(qū)動(dòng)控制器
上傳時(shí)間： 2013-04-24
上傳用戶：qq1604324866
近年來，隨著汽車工業(yè)的迅速發(fā)展，環(huán)境污染、全球變暖、能源短缺的壓力使傳統(tǒng)的內(nèi)燃機(jī)汽車面臨前所未有的挑戰(zhàn)，燃料電池電動(dòng)汽車已成為汽車工業(yè)新的熱點(diǎn)。由于燃料電池輸出特性的特殊性，輸出端必須連接DC/DC變換器，使之與驅(qū)動(dòng)器配合。因此，DC/DC變換器是燃料電池電動(dòng)汽車的關(guān)鍵零部件之一。 本論文主要對(duì)燃料電池電動(dòng)轎車FCEV(Fuel Cell Electric Vehicle)用DC/DC變換器的主電路拓?fù)浣Y(jié)構(gòu)、參數(shù)設(shè)計(jì)及電磁兼容(EMC)問題進(jìn)行了研究。重點(diǎn)針對(duì)升降壓和雙向DC/DC變換器進(jìn)行分析研究。 首先介紹分析了幾種傳統(tǒng)升降壓直流變換器的工作原理和優(yōu)缺點(diǎn)。針對(duì)燃料電池的特性和電動(dòng)汽車對(duì)升降壓DC/DC變換器的性能指標(biāo)要求，分析比較了非隔離式直流變換器的一些優(yōu)點(diǎn)和缺點(diǎn)，提出了Buck-Boost級(jí)聯(lián)的升降壓主電路方案并提出相關(guān)的控制策略。然后運(yùn)用模擬仿真軟件MATLAB仿真分析了控制策略的正確性。 其次分析研究了雙向DC/DC變換器的應(yīng)用與設(shè)計(jì)，綜合比較現(xiàn)有的各種隔離與非隔離方案，結(jié)合車用要求，選擇了非隔離式的Buck-Boost拓?fù)洹ａ槍?duì)其工作原理、特點(diǎn)進(jìn)行了雙向DC/DC變換器主電路與控制電路的設(shè)計(jì)研究，重點(diǎn)研究其過渡過程的控制策略。在利用MATLAB進(jìn)行各種過渡過程的仿真分析的基礎(chǔ)上，選取了最佳的過渡控制方案。并利用該控制策略編制DSP控制程序，制作了小功率1kW數(shù)字控制雙向DC/DC變換器。 最后深入討論了DC/DC變換器中的電磁兼容問題。分析了DC/DC變換器主電路中存在的主要干擾源、干擾產(chǎn)生的機(jī)理以及干擾傳播途徑，然后以此出發(fā)，重點(diǎn)討論了各種抑制電磁騷擾(EMI)和電磁抗干擾(EMS)的方法及措施，給出具體方案。
上傳時(shí)間： 2013-05-24
上傳用戶：hanli8870
超級(jí)電容器又稱超大容量電容器、金電容、黃金電容、儲(chǔ)能電容、法拉電容、電化學(xué)電容器或雙電層電容器（英文名稱為EDLC，即Electric Double Layer Capacitors），是靠極化電解液
標(biāo)簽： 超級(jí)電容器 發(fā)展動(dòng)態(tài)
上傳時(shí)間： 2013-05-23
上傳用戶：gxmm
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