At the same time, problems of the DC grounding system are valuable because it is not only significant in HVDC operation but also affects the AC system nearby.
同时，直流接地极关系着高压直流输电系统的安全运行，对于附近的交流系统也有影响，其中的一些问题也十分值得研究。
The article presents L6598 inner structure, its lead functions, unit circuit operation philosophy and its circuit in the wide range AC/DC adapter.
文中介绍了L6598内部结构、引脚功能、单元电路工作原理及其在宽范围AC/DC适配器中的应用电路。
In our research, we adopt platinum as anode lead as cathode cation membrane and filtration fabric as septum separately, electrolysis operation was carried out through electrifying DC.
本研究采用铂阳极、铅阴极，阳离子膜和滤布分别作为隔膜，通直流电进行电解操作。
The DC operation power supply system is a kind of important equipment in substation.
直流操作电源系统是变电站中的重要设备。
The control and protection system in DC power distribution systems plays a very important role in ensuring the mass transit railway safe and reliable operation.
直流供电的控制和保护系统对确保轨道交通的安全、可靠的运行，具有举足轻重的作用。
The DC operation power supply system is a kind of important equipment in transformer substation.
直流操作电源系统是变电站中的重要设备。
Preferably, both electrodes operate on a DC or AC power supply, preferably a battery, while the discharge lamp operates in the second mode of operation.
优选地，两个电极在DC或AC电源下运行，优选为在电池下运行，同时放电灯运行在第二操作模式。
According to temperature changes of the DC traction motor in continuous operation, the fan motor speed is controlled, and the purposes of regulation of ventilation and energy-saving are achieved.
根据直流牵引电动机在持续运行中的温升变化控制通风机的电动机转速，实现通风量调节，以达到节能目的。
The monopolar ground circuit operation mode of DC transmission system gives rise to excessive vibration and noise of some transformers in the power grid, which impacts the safety of equipment.
直流输电系统单极大地回路运行方式导致电网部分变压器振动加剧，噪声增大，影响了设备安全。
In this system, the PLC and the DC speed-regulator are combined to simulate the operation of flying saw machine.
采用直流调速器和可编程控制器的结合来实现飞锯机模拟。
This article briefs the overall operation and maintenance situation of direct current (dc) system in Northeast power Grid Corp. in 2000 -2004.
介绍了2000 - 2004年东北电网公司直流系统的整体运行情况及管理情况。
Although DC system had many advantages in long-distance and capacity transmission, DC system monopole operation might have impact on safe operation of Shanghai grid.
虽然直流系统在长距离、容量输电方面有诸多优势，但直流系统单极运行时可能对上海电网的安全运行带来影响。
As a result, the equivalent disturbing current can meet the requirement with all DC filters in service in any operation mode so that DC system can operate well steadily.
结果表明，任何运行方式下直流滤波器的投运均使线路等效干扰电流基本符合要求，直流系统可维持稳定运行。
After the rectifier, which has been regulating dc voltage, undergoes tripping-out, the healthy inverter terminal should maintain the dc voltage in order to continue operation.
调整直流电压的整流器断开后，正常的倒相器会维持直流电压以保持可操作性。
DC power is a very important secondary equipment in substation, its performance and quality will have a direct bearing on the stable operation of power grids and safety equipment.
变电站直流电源是变电站非常重要的一种二次设备，其性能和质量的好坏直接关系到电网的稳定运行和设备安全。
The structure and operation principle of DC motor, AC motor, control motor and transformer are introduced in this course.
本课程主要介绍直流电动机、交流电动机、控制电机和变压器的基本结构、工作原理；
Recently a 70ton DC arc furnace has been put into operation in Bayi Iron and Steel Company of Xinjiang Province. The arc furnace adopted a new type of rectifier source provided by CEGELEC of France.
法国CEGELEC新近在新疆八一钢厂投产的70吨直流电弧炉采用了一种新型的整流电源，具有很好的研究和开发价值。
Based on hysteresis current control, the basic operation principle of PWM AC DC voltage source converter is analysed. Moreover, the design concept of the control system is described in detail.
从滞后电流控制的角度阐述了PW M电压型高频整流器的基本工作原理，较详细地介绍了控制系统的设计思想。
This paper analyzes the two operation modes of the push-pull full-bridge bi-directional DC /DC converter and conduct a simulation analysis. In theory, the two-way flow of energy is possible.
文中分析了推挽全桥双向DC/DC变换器的两种工作模式，并进行了仿真分析，理论上验证了其实现能量双向流动的可行性。
The DC electric machine rotor comprehensive testing instrument solves problems of single function of electric machine rotor testing instrument and inconvenient operation in the prior art.
它解决了现有技术存在的电机转子检测仪功能单一，使用不便。
BLDC is simple in structure, reliable in operation and easy to control when it remains the good dynamic and static governing characteristics of the traditional DC Motors.
直流无刷电动机不仅保持了传统直流电动机良好的动、静态调速特性，且结构简单、运行可靠、易于控制。
BLDC is simple in structure, reliable in operation and easy to control when it remains the good dynamic and static governing characteristics of the traditional DC Motors.
直流无刷电动机不仅保持了传统直流电动机良好的动、静态调速特性，且结构简单、运行可靠、易于控制。
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