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 dc
 Study of Fast DC Circuit Breaker Based on Electronic-Driven 基于电子操动的快速直流断路器的研究 短句来源 Inspection, Analysis and Restraining of DC Transmission on Power Grid Equipment 电网设备直流偏磁影响检测分析与抑制 短句来源 Research on the Analysis and Control Strategy of Ultracapacitor DC Storage Energy System Application 超级电容器直流储能系统分析与控制技术的研究 短句来源 Research on the DC Bias Phenomena of Large Power Transformers 大型电力变压器直流偏磁现象的研究 短句来源 The Decentralized Coordinated Control for AC/DC Hybrid Interconnected Power Systems 交/直流混合互联电力系统的分散协调控制 短句来源 更多
 direct current
 Rotational Speed Control of Direct Current Servocontrol System 直流伺服控制系统的转速控制 短句来源 MILITARY SPECIFICATION GENERATOR SETS, GASOLINE ENGINE DRIVEN, 0. 5kW THRU 10kW, 60 HERTZ, 400 HERTZ AND 28 VOLT DIRECT CURRENT, TYPE Ⅰ(TACTICAL), CLASS 2(UTILITY) GENERAL SPECIFICATION FOR MIL－G－52732B1985．9．27代替MIL－G－52732A1979．6．16军用规范0．5至10kW交流（60Hz、400Hz）和直流（28V）──Ⅰ型（战术）2类（普通）汽油发电机组通用规范 短句来源 Method for Speed Regulation by Weak Magnetically Controllable Direct Current 可弱磁控制的直流调速方法 短句来源 Supply of Direct Current on Vacuum Sputter Coating 真空溅射镀膜专用直流电源 短句来源 The equipment to economize electric power adopts direct current supply,which comes from 220V/10V 2W transformer,then commutes and passes through Manostat 7812.The Relay 1J,and 2J adopt JEC-21F-12V,dual time base IC is used to detect and distinguish component signal,and uses current transformer to sampling. 电动机节电保护器采用220V/10V 2W变压器供电,经桥式整流集成块7812稳压后提供直流电源。 中间继电器1J、2J采用JEC-21F-12V,检测鉴别元件利用双时基集成电路块,信号取样采用电流互感器。 短句来源 更多
 hvdc
 Study of Control and Protection Strategies for VSC Based HVDC System 新型直流输电的控制和保护策略研究 短句来源 Nonlinear Modal Analysis and Flexible Coordinated Control for HVDC/AC Power Systems 交/直流互联电力系统的非线性模态分析和柔性协调控制 短句来源 Dynamic Digital Simulation of HVDC Power Transmission System 直流输电系统的动态数字模拟 短句来源 BIPOLAR HVDC TRANSMISSION LINE EQUATION AND PARAMETERS 高压双极直流输电线路方程式及参数 短句来源 Network Analysis of Harmonics and Filters in Zhou shan HVDC Transmission Engineering 舟山直流输电工程谐波和滤波的网络分析 短句来源 更多
 direct
 Rotational Speed Control of Direct Current Servocontrol System 直流伺服控制系统的转速控制 短句来源 MILITARY SPECIFICATION GENERATOR SETS, GASOLINE ENGINE DRIVEN, 0. 5kW THRU 10kW, 60 HERTZ, 400 HERTZ AND 28 VOLT DIRECT CURRENT, TYPE Ⅰ(TACTICAL), CLASS 2(UTILITY) GENERAL SPECIFICATION FOR MIL－G－52732B1985．9．27代替MIL－G－52732A1979．6．16军用规范0．5至10kW交流（60Hz、400Hz）和直流（28V）──Ⅰ型（战术）2类（普通）汽油发电机组通用规范 短句来源 Method for Speed Regulation by Weak Magnetically Controllable Direct Current 可弱磁控制的直流调速方法 短句来源 Supply of Direct Current on Vacuum Sputter Coating 真空溅射镀膜专用直流电源 短句来源 The equipment to economize electric power adopts direct current supply,which comes from 220V/10V 2W transformer,then commutes and passes through Manostat 7812.The Relay 1J,and 2J adopt JEC-21F-12V,dual time base IC is used to detect and distinguish component signal,and uses current transformer to sampling. 电动机节电保护器采用220V/10V 2W变压器供电,经桥式整流集成块7812稳压后提供直流电源。 中间继电器1J、2J采用JEC-21F-12V,检测鉴别元件利用双时基集成电路块,信号取样采用电流互感器。 短句来源 更多

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 dc
 The structure and properties of the samples were investigated by XRD, Raman spectral techniques, and DC measurements and so on. Results of the analysis reveal that crystals of the complex 1 are orthorhombic, space group Pbcn, a = 4.6370(2) nm, b = 0.7549(2) nm, c = 1.3888(4) nm, V = 4.861(2) nm3, Z = 8, M = 945.49, Dc = 2.58 g/cm3, μ = 2.625 cm-1, R = 0.063, and wR = 0.075. Furthermore, it is clear that when carrier signal h(t)=0, closed-loop pulse-width modulation (PWM) DC-DC converters are not well posed, and when some condition is satisfied, the closed-loop PWM DC-DC converters with a P controller are well posed. The brushless DC motor (BLDCM) with trapezoidal electromotive force (back-EMF) waveform is used widely. Bifurcation and chaos in multi-parallel-connected current-mode controlled boost DC-DC converters 更多
 direct current
 Direct current magnetic susceptibility measurement in the 2-300 K temperature range supports a high-spin ground state. This paper analyzed the operating principles and power and torque characteristics of the wind turbine and the direct current motor (DC motor), and investigated the operating characteristics of the wind turbine compared to that of the DC motor. Surfacing beads are prepared by a direct current tungsten inert gas arc nickel-aluminum (Ni-Al) powder surfacing process. Using A-TIG welding with the modes of alternating current (AC), direct current electrode negative (DCEN) and direct current electrode positive (DCEP), respectively, the flux differently affects weld penetration when the polarity is different. The structure, phase transition, oxygen ion diffusion and electrical conductivity were studied with X-ray diffraction (XRD), differential scanning calorimeter (DSC), direct current (dc) resistivity, and dielectric relaxation (DR) measurements. 更多
 hvdc
 Digital controller for hybrid filter in HVDC based on approximate inverse system The results of both simulations based on PSCAD and experiments on a 30 kVA HVDC system prove that the proposed digital control system is stable and efficient for eliminating the harmonics. A robust adaptive control with unmodeled dynamic for HVDC transmission systems Utilizing the feature of quick response of HVDC to improve the performance of AC/DC system has become the emphasis to be researched. The additional control of HVDC with unmodeled dynamics only uses the local signals and its design is simple, furthermore it can obviously improve the stability of power system in different operational conditions. 更多
 direct
 We express them in terms of generatorsEij ofU(gl(n)) and as differential operators on the space of matrices These expressions are a direct generalization of the classical Capelli identities. For a cellA?Wf we consider a full subcategory formed by direct sums of tilting modulesQ(λ) with highest weights. The Direct Summand Property in Modular Invariant Theory The group of direct isometries of the hyperbolic space ${\Bbb H}^n \mbox{is} G=\mbox{SO}_0(n,1).$ This isometric action admits many differentiable compactifications into an action on the closed n-dimensional ball. We show that ${\mathcal M}(G,R)$ is a symmetric tensor category, i.e., the motive of the product of two projective homogeneous G-varieties is a direct sum of twisted motives of projective homogeneous G-varieties. 更多
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