It has a simple structure and a high performance-to-price ratio, and at the same time it can be applied to other small power DC speed governing systems of the same load types.
该装置结构简单、性价比高，也可应用于其他具有同类负载特征的小功率直流调速系统。
The RTS drive and DC motor combination is economical and extremely competitive for low-power drive systems.
垃圾转运站和直流电动机驱动器组合系统既经济又非常具有竞争性的低功率驱动器。
Different from traditional AC systems, DC power is faster and more controllable, and it can provide more efficient way for power dispatching.
与传统交流系统不同，直流功率具有的快速可控的优点，将为电力的合理调度提供更快速有效的手段。
The DC system is capable of rapid response to changes in control setting, with DC power transfer changes occurring faster than in AC systems.
由于直流传送功率的改变要快于交流系统，直流系统对控制整定值能迅速作出响应。
The current controller on the HVDC line can do AC/DC parallel tie-line local control or improve the stability of AC/DC hybrid power systems.
直流功率调制器可以对交直流联络线进行局部控制或改善交直流混合系统的运行特性。
Following up the change of some parameters in ac systems, it can regulate the active power transmitted by DC link and damp power oscillation in systems.
在交流系统受到扰动后它通过跟踪交流系统某些参数的变化来调节直流输送的有功功率，从而达到阻尼整个系统功率振荡的目的。
DC injection restriction is a critical issue in the photovoltaic power systems.
直流注入是光伏并网发电系统中的一个重要问题。
In general, tachometer generators are eliminated in the small and medium power DC rotating speed governing systems, and armature voltage is used as motor speed signal.
在中小型直流调速系统中，一般都取消了测速发电机，而以电枢电压作为电机转速信号。
Spang Power Electronics designs AC and DC drive systems for a variety of continuous web and strip processing lines.
斯潘电力电子设计网站及带加工生产线不断交流和直流驱动系统的各种。
In this paper, power electronic circuits were considered as one type hybrid dynamic systems and the concept and theory of switched linear systems were introduced to DC-DC converter control systems.
该文将电力电子电路视为一类混杂动态系统，尝试在DC- DC变换器控制系统研究中引入切换线性系统的概念和理论。
The problem of oversimplification and improper selection of DC model, which exists in the DC modeling when AC and DC systems interact in AC/DC hybrid power system, is discussed.
讨论了目前研究交、直流混合电网交直流系统相互作用时在直流建模上存在的模型过度简化及模型选用不恰当的问题；
The control systems, system s constitution and functions of a monitoring and control system of DC power source screen based on PLC were introduced in the paper.
介绍了一种利用PLC控制的直流电源屏监控系统的控制要求、系统组成及功能等。
Interior point method for semidefinite programming data collation ac and DC systems unified reactive power optimization algorithm to determine the coefficient matrix.
说明：半定规划内点法数据整理交直流系统统一无功优化算法，系数矩阵的确定。
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 study of voltage stability about multi-infeed DC transmission systems is a new research field, so that voltage instability may probably threaten the security and stability of power grid.
多直流馈入输电系统的出现给电压稳定研究带来了全新的课题，电压失稳有可能成为这类电网安全稳定运行的最大威胁。
The protection and control system in subway DC power supply systems play a key role in ensuring the safety and reliability of the subway.
地铁直流供电的保护与控制系统对确保地铁的安全可靠运行起着关键作用。
We mainly operate solar power systems, solar panels, pv pumps, brushless DC pumps, brushless DC controllers and other new energy products.
经营太阳能发电系统、太阳能电池板、光伏水泵、无刷直流水泵、无刷直流控制器为一体的高新科技企业。
A method of reactive power security control in high voltage AC / DC hibrid systems is presented in this paper.
本文提出一种高压交直流并联系统的无功校正安全分析方法。
Pressure and insulation of solar panels will limit the number of photovoltaic modules in series, so DC/DC boosted link was used generally in photovoltaic power generation systems.
由于光伏电池组件串联的数量受到太阳能电池板耐压和绝缘要求的限制，因此在光伏发电系统中一般采用DC/DC升压环节。
Pressure and insulation of solar panels will limit the number of photovoltaic modules in series, so DC/DC boosted link was used generally in photovoltaic power generation systems.
由于光伏电池组件串联的数量受到太阳能电池板耐压和绝缘要求的限制，因此在光伏发电系统中一般采用DC/DC升压环节。
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