环电流

This paper presents a novel half bridge single phase rectifier based on IVC technique.

提出了一种新颖的基于电感电压控制模式和滞环电流控制模式的半桥式单相Buck整流器。

It is verified that a proper magnitude of linear to loop current ratio will results an omnidirectional circular polarized wave with same pattern for all transverse electromagnetic field in the far field but not in the near field or vise versa.

验证适当强度比例之线电流与环电流可在远场辐射四方均匀之圆形极向波，且所有横向电磁场之瞬间场形均相同，但在近场则否，或反之亦然。

According to the characteristic of matrix converters, strategies for reducing common-mode voltage in current-controlled MC are proposed based on the hysteresis current control and space vector modulation.

在滞环电流和空间矢量复合控制的基础上，针对电流控制型矩阵变换器自身的特点，提出了一种抑制共模电压控制策略。

Open-loop current transfer characteristic of MO-CCDTA was analyzed, first. A singly limited current-mode comparator was given, also.

先分析MO-CCCDTA的开环电流特性，并给出电流模式单限比较器。

We study the effect of the solarcycle and geomagnetic activity on the composition and their maximum positions of the ring current ions by using the energetic particle data obtained by MICS instrument on board CRRES satellite and other research results of AMPTE.

根据CRRES卫星上MICS离子成分探测器的观测资料以及前人有关AMPTE卫星的观测数据，研究了地磁活动和太阳活动性对环电流成分以及各种环电流离子的最大通量位置的影响。

The controller design of inside current loop and outside voltage loop is also analyzed. The simulation results show that the designed rectifier has excellent steady-state and dynamic performance.

同时，对内环电流控制器和外环电压控制器给出了工程设计方法，仿真结果表明依此设计的整流装置具有良好的动、静态特性。

The Sagnac interference method and a 1.31μm light source, generally used in fiber-optics current sensor, are used to measure the Verdet values. The measured results are useful in the research of FOCS.

实验数据采用目前研制光纤电流传感器最常用的Sagnac干涉方法，并在最常用的1.31μm波长光源下得到，因此对进一步研究扭转光纤环电流传感器具有实用价值。

The results about the magnetic vector potential of current-carrying ring and the electric potential of uniform charged ring which are expressed by Bessel functions are further calculated and analyzed.

用Bessel函数积分对圆环电流磁矢势及均匀带电圆环电势作进一步的计算分析，引申出磁感应强度及电场强度新的级数表达式，分析讨论了所得结果。

Detailed discussion about distribution and changes of the current in every rotor bar and end ring, the relationship between the number of broken-bar and fault features in stator current after broken bar fault appearing was shown.

转子断条位置对电机影响很大，过去没有引起人们的重视，该文对此进行深入研究，分析电机转子断条位置与故障特征量之间的关系，转子断条位置与转子导条电流、转子端环电流之间的关系，并总结出其规律，指出哪些位置导条进一步断裂的可能性较大。

A novel quasi-constant frequency hysteresis PWM control approach is presented in this paper. Frequency feedback is introduced in hysteresis current control to stabilize switching frequency. Comparing with the common used constant frequency current mode control, the new approach has better stability, faster transient and higher precision, as well as elimination of sub-harmonic oscillation.

摘 要：本文提出了一种新的准固定频率滞环PWM电流控制方法，该方法在滞环电流控制的基础上，引入频率反馈控制，使开关频率基本固定，解决了目前广泛使用的固定频率电流控制方法具有的次谐波振荡的问题，并且具有稳定性好、相应速度快、控制精度高的优点。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了