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双定子式笼型无级调速异步电动机的方程式和矢量图
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作者 郭晓红 郭宏凯 +1 位作者 张旭红 郭莉鸿 《电力学报》 1999年第3期164-167,共4页
双定子式笼型无级调速异步电动机是一种不需任何半导体器件,调速方法简单,调速范围较宽,运行可靠,成本较低的新型调速电机。本文推导了该类型电机的方程式和夫量图,并用矢量留证明了该类电机的能量关系。
关键词 双定子式 笼型 无线调速 异步电动机 方程式 矢量图
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DEVELOPMENT OF 50MW S-BAND KLYSTRON 被引量:1
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作者 Wang Yong Xie Jingxin Ding Yaogen Liu Pukun 《Journal of Electronics(China)》 2006年第3期471-472,共2页
This letter reports the development of a 50MW S-band klystron in the Institute of Electronics, Chinese Academy of Sciences (IECAS). It adopted a structure of six-cavity and single output window. Under conditions of ... This letter reports the development of a 50MW S-band klystron in the Institute of Electronics, Chinese Academy of Sciences (IECAS). It adopted a structure of six-cavity and single output window. Under conditions of an RF (Radio Frequency) pulse width of 4t, ts, a beam voltage of 305,9kV and a beam current of 368A, the peak output power has achieved 51.4MW with an efficiency of 45.6% and a gain of 54dB. 展开更多
关键词 50MW S-band klystron High peak power Design ideas
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起重机交流调压调速控制系统设计 被引量:1
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作者 杨建平 赵振献 张泽忠 《华东电力》 北大核心 2001年第2期57-59,共3页
基于起重系统电机运行特性及对速度控制的特殊要求 ,通过对我国起重行业应用技术的调查与分析 ,介绍了 KJT-4 0 0系列三相交流调压调速控制系统的模型基础以及系统电流环、建设环和同步电源及触发电路的设计 ,满足起重控制系统应用要求。
关键词 起重机 交流调压调速 无线调速 可控硅 控制系统 系统设计
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Transfer efficiency optimal control of magnetic resonance coupled system of wireless power transfer based on frequency control 被引量:41
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作者 TAN LinLin HUANG XueLiang +2 位作者 HUANG Hui ZOU YuWei LI Hui 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第6期1428-1434,共7页
In order to suppress the fast decrease of the transfer efficiency of magnetic resonance coupled wireless power transfer system(MRCWPTS) with distance increase,this paper investigates the impact factors of the system t... In order to suppress the fast decrease of the transfer efficiency of magnetic resonance coupled wireless power transfer system(MRCWPTS) with distance increase,this paper investigates the impact factors of the system transfer efficiency and is,then formulates a new efficiency optimal control method based on frequency control.Based upon this control method two optimal control schemes are designed to achieve transfer efficiency control of the system.Simulations and experiments show that the proposed efficiency optimal control method can effectively stabilize the system transfer efficiency in a certain range so as to successfully solve the subtle issue of transfer efficiency variation with distance. 展开更多
关键词 magnetic coupling frequency control efficiency optimal wireless power transfer
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