环电流

ENA探测器能够分辨环电流带离子分布的不均匀性；

The ENA detector is able to measure the inhomogeneity of the ring current ions .

离子通量的变化大体上是无色散的。离子主要受南向行星际磁场（IMF）所引起的对流电场的驱动注入到环电流区域。

Ions are injected from the magnetotail to the ring current region in a dispersionless mode most probably by enhanced convective electric field that driven by steady southward interplanetary magnetic field ( IMF ) .

滞环电流控制的大功率LED恒流驱动芯片设计

Design of a High Power LED Driver Using Hysteresis-current Control Technique

分布式自动删除平均恒虚警率检测技术滞环电流控制的大功率LED恒流驱动芯片设计

Distributed Automatic Censored Cell-averaging CFAR Detector Design of a High Power LED Driver Using Hysteresis-current Control Technique

其控制系统由两个PI电压控制器和一个滞环电流控制器组成。

The control scheme consists of two PI voltage controllers and one hysteresis current controller .

设计了以DSP为控制器、集成电路构成高速滞环电流比较器的电机调速系统。

The motor speed driving system uses DSP as controller and uses high-frequency delay-loop current comparator composed of integrated circuit .

基于电压空间矢量的APF滞环电流控制方法。

The hysteresis current control method for APF based on voltage space vector .

测量了硬X射线闪烁谱及其空间分布，讨论了逃逸电子产生的硬X射线强度与充气压强、环电流、纵向磁场之间的关系。

The hard X-ray scintillation spectrum and its space distribution are measured . The relation between hard X-ray intensity , pressure of filling gas and toroidal current is discussed .

针对UPS功率校正部分，采用了固定频率滞环电流控制方法来实现；针对UPS逆变器控制，采用基于数字PID控制的UPS逆变控制算法。

Fixed frequency delay loop current controlling method is taken to realize according to UPS power proofreading calculation is taken according to UPS Inverter controller .

通过对比瞬态电流控制、预测电流控制以及滞环电流控制三种电流控制策略阐述PWM整流器的电流控制技术。

By comparing transient current control , the predicted current control and hysteresis current control this paper sets forth current control technology of current control strategy of PWM rectifier .

该方法不同于现有SPWM逆变和直接电流跟踪控制，而是采用同步锁相方法，通过软件实现全数字化的滞环电流控制。

Unlike the traditional SPWM inverter and di-rect current-tracking control , this controller adopts synchronous phase-lock and achieves full digital hysteresis current con-trol by software .

推导了它的数学模型，控制系统采用电压外环电流内环的双闭环经典PI控制，设计了相关的控制参数。最后对该整流拓扑做了相关仿真分析。

In this paper , mathematical model of this rectifier topology is derived and control parameters of the control system are designed , which uses voltage-current double closed loop PI control method .

为了提高功率因数、减小输入电流谐波以及稳定整流输出电压，提出了电流电压双闭环控制结构和滞环电流PWM控制策略。

In order to improve power factor , reduce current harmonics and stabilize dc voltage , current and voltage loops control structure and hysteresis current PWM control strategy are presented in this paper .

银川地区10kV配电网合环电流及计算方法的研究

Study on Closed Loop Current and its Calculation Method in Yinchuan 10 kV Distribution Network

在STARE视场内，环电流能量变化达极大后，较低纬（70.2°N）上的电场值经常大于较高纬（71.8°N）上的值。

In the STARE field of view the magnitude of electric fields at lower latitude ( 70.2 ° N ) is usually larger than that at higher latitude ( 71.8 ° N ) during ring current increase events .

对各种变化时空特征的分析表明：①Dst变化清楚地反映出赤道对称环电流磁扰的空间分布和时间演化特征；

The results show that the spacial distribution and the temporal evolution characteristic of equatorial symmetric ring current are reflected clearly by Dst variation .

模拟计算研究表明，双星极轨卫星能够对环电流区ENA进行有效探测；

This simulation research has indicated that the polar satellite of DSP is capable of detecting the ring current ENA .

本文着重分析了基于两相调制方式下PWM整流器的两种控制策略：空间电压矢量控制和滞环电流控制，并完整地给出了基于预测电流控制的PI调节器的设计方法。

Then , this paper analyzes two kinds of control methods based on two-phase modulation : SVPWM and hysteretic current control . The method of predicted current control PI controller is given in this paper too .

构建了固体氧化物燃料电池SOFC的中期动态仿真模型，并基于滞环电流跟踪控制法实现SOFC电池的有效输出。

Medium-term dynamic simulation model for SOFC is established , and then hysteretic current control method is used to achieve effective output of SOFC . 2 .

在三相逆变器dq模型的基础上，分析了控制系统结构，并对电压外环电流内环组成的双闭环控制系统进行了设计，得出了PI调节器的参数并对其性能做了分析。

On the basis of three-phase inverter dq model , Structure of control system are analyzed , and the parameters of PI controller is obtained by designing double loop control system .

本文介绍了TCSC的基本结构、运行特性和典型运行模式，控制电容电压过零算法，开环电流调制和电容电压增量控制算法；对三种控制算法特点进行比较。

Based on the TCSC mathematical model , capacitor voltage boost level , the open-loop current modulating algorithm and the capacitor voltage zero-crossing control algorithm is analyzed in details .

磁暴越强烈，注入区高度越低，环电流区观测到的ENA通量越高；

The stronger the storm is the lower the particle injection is and the larger flux of ENA is emitted from the ring current region .

本文引入了三角波调制、多重化与移相载波SPWM技术、滞环电流跟踪控制、瞬时值比较控制、单周控制五类控制策略，在性能方面各有优势。

This paper introduced five control strategys including triangle-wave modulation , carrier phase shifted SPWM tecnology , hysteresis current tracking control , instantaneous value comparison control and one-cycle control , which have their strong point .

对一种新颖的双Buck逆变器（Dual-BuckInverter，简称DBI）进行了分析和研究，该逆器采用滞环电流控制策略，实现了无偏置电流半周期运行模式，提高了系统效率。

A novel Dual-Buck Inverter ( DBI ) is proposed in this paper , the system adopts hysteresis current control , achieves non-biased half cycle mode and improves system 's efficiency .

本文介绍了模拟等离子体电流环电流在HL-1装置铜壳的1/4段上感应的涡流，在等离子体区产生的磁场大小、分布和时间特征的测量结果。

Using a plasma simulator , the magnitude , distribution and time behavior of the magnetic field generated by the eddy currents in a quarter segment of the HL-1 copper shell were measured .

最后，基于构建的滞环电流模式buck-boost系统的宏模型，完成了电流检测电路的各种性能的测试，并完成电路的版图设计。

Finally , based on the macro model of hysteresis current-mode buck-boost system , several performances of the current detection circuit are tested . The layouts of the circuits are completed by Cadence .

本文描述HL-1装置物理调试实验中微机数据获取及处理工作。获得了环电流、环电压、软X射线、硬X射线、磁探针信号的数据。

The data acquisition and processing based on microcomputers for the initial operation of HL-1 Tokamak are described here , The signals from detectors for toroidal current , loop voltage , soft X ray , and hard X ray and from magnetic probes have been acquired .

TC-2卫星上搭载了专用于地球环电流探测的中性原子成像仪（NUADU）。

TC-2 carried one energetic neutral atom imager ( NUADU ), dedicated for detecting of the Earth ring current .

讨论了滞环电流控制模式中的电感电流，开关电流的有效值和MOSFET开关损耗与效率之间的关系，促进了计算机辅助设计程序的优化。

On the basis of analyzing the RMS inductor current and the RMS switching current , as well as the MOSFET switching loss , the relations between them and the efficiency of a Hysteretic Boost PFC Circuit are discussed in this paper .

对Ⅱ区场向电流及其伴随的部分环电流和电离层电流组成的内磁层三维电流体系（PRFI电流系）的磁场效应进行了数值计算。

The geomagnetic effects of a 3-d inner-magnetospheric current system ( PRFI current system ) of the region ⅱ field-aligned currents and associated partial ring currents and ionospheric currents have been calculated .