1) instantaneous reactive power
瞬时无功
1.
This paper analysis the active power filter and instantaneous reactive power theory.
基于瞬时无功理论的传统有源滤波器在三相四线制电路中不适用,文章针对这个问题,综合运用瞬时无功理论中的p-q方法和ipi-q方法,提出了一种新的基于瞬时无功理论的有效的三相四线制谐波检测新方法,将三相电流中的零序电流剔除,完善了p-q方法和ip-iq方法的不足,通过计算验证了该方法适用于任何三相电路,包括三相四线制电路,并且三相电压波形的畸变不影响检测结果的准确性。
2.
This method doesn t need to utilize the theory of instantaneous reactive power,and can be readily achieved.
提出1种用于有源电力滤波器的新型控制方法,其特点是无需进行瞬时无功计算,且容易实现,尤其适合于单相电路。
3.
A method which detects harmonic current of three-phase system with DSP based on theory of instantaneous reactive power is presented in this paper.
根据瞬时无功理论,提出基于DSP的谐波电流检测方法,实现了谐波电流和无功电流的实时、快速检测。
2) instantaneous reactive power theory
瞬时无功功率
1.
To avoid some shortages which exist in the harmonic current detecting methods now, such as time delay, large computation, and so on, an improved ip-iq algorithm based on instantaneous reactive power theory is presented.
针对现阶段对电网谐波电流检测方法中普遍存在的时延、计算量大等不足,提出了一种基于瞬时无功功率理论的改进ip-iq变换法。
2.
The paper introduces the concepts and working principles of the Unified Power Quality Conditioner(UPQC) and presents an improved measuring method based on the generalized instantaneous reactive power theory.
介绍了综合电能质量补偿装置(UPQC)的概念及工作原理,提出了一种以广义瞬时无功功率理论为基础改进的检测方法,该方法克服了以往一些检测方法的缺陷,并能快速、准确地检测出电网电压的降落、升高、不对称以及谐波等各种干扰。
3.
It is introduced that harmonic current in the electric network and harmonic current detecting method based on instantaneous reactive power theory in the paper,and then it presents the current detecting method in the anisomerous mains voltage,aberrance circuit based on instantaneous reactive power theory.
通过对电网谐波和瞬时无功功率理论在谐波检测中应用的分析研究,作者给出了基于瞬时无功功率理论的检测方法在电网电压不对称、存在畸变时的电流检测方法。
3) Instantaneous reactive power
瞬时无功功率
1.
Analysis of the essence of three-phase instantaneous reactive power theory and its lacuna;
对三相瞬时无功功率理论本质及其缺陷的分析
2.
Simulink simulation on harmonic detection of power system based on the theory of instantaneous reactive power;
基于瞬时无功功率理论的电力系统谐波检测的Simulink仿真
3.
Study of high-order harmonic current detecting method based on instantaneous reactive power theory
基于瞬时无功功率理论的电流高次谐波检测方法研究
4) instantaneous reactive power theory
瞬时无功理论
1.
The instantaneous reactive power theory is widely used in the detections of harmonic and reactive current in three-phase active power filter.
瞬时无功理论在三相有源电力滤波系统的谐波及无功电流检测中获得了广泛的应用。
2.
It introduces the ip-iq harmonic detecting method based on the instantaneous reactive power theory, and further discusses the positive sequence, negative sequence and reactive detecting of random number harmonic in the single-phase, three-phase and three-wires, three-phase and four-wires.
介绍了基于瞬时无功理论的ip-iq方法,并将其推广应用到单相、三相三线、三相四线系统中任意次谐波正序、负序有功、无功分量的检测,重点探讨了ip-iq方法具体实现中最重要的两个方面,即低通滤波器的优化设计和不对称、畸变电网电压下锁相环的设计与实现,最后给出典型的仿真与实验结果。
3.
In the control system,a detection method of instantaneous power and current based on instantaneous reactive power theory was carried out,and a compound control strategy which combines open loop with close loop was realized.
在该控制系统中实施了基于瞬时无功理论的瞬时功率和瞬时电流的检测算法以及一种开闭环相结合的复合控制策略。
5) instantaneous reactive power
瞬时无功理论
1.
High power electronic and FACTS devices provide power system with quick and dynamic responses, yet the methods based on traditional definitions of reactive power can not fulfill the demand, so the instantaneous reactive power theory is used to detect the reactive power in SVC system.
大功率电力电子器件和FACTS装置在电力系统中的应用为电力系统提供了快速动态的响应,而根据传统无功功率的定义来计算SVC系统中的无功功率的方法难以满足速度要求,因此本文采用瞬时无功理论来实现SVC系统中无功功率的计算。
2.
For aberrance current detecing based on the instantaneous reactive power theory,it s difficult for Butterworth filter to acquire famous dynamic and static state characteristics at the same time.
针对瞬时无功理论的检测方法中Butterworth低通滤波器存在动、静态特性难以兼顾的弱点,选用Butterworth滤波器和均值滤波器串联的形式作为优化低通滤波器,通过均值滤波器抑制Butterworth滤波器的输出纹波,选用2阶Butterworth滤波器以加快检测速度。
6) instantaneous reactive detection
瞬时无功检测
补充资料：RSCG01-5000管式超高温瞬时（UHT）杀菌机
应用：
应用于乳品、果汁或茶等流体物料，在管式热交换器中对物料进行超高温瞬时杀菌处理（UHT）。
工作原理：
该设备为全自动设备，其运行操作可以分为以下四个步骤：
1． 设备预杀菌
2． 物料杀菌
3． 无菌中间清洗
4． 最终清洗
在正式生产前，设备在高压下进行30分钟的热水循环，以完成对设备物料通道的预杀菌处理，随后，将设备逐步冷却到生产温度，然后进入待料状态。
当下游设备（包装机、无菌罐等）准备就绪后，即可进行生产（物料杀菌）。
每个生产周期结束后，都要用碱液或酸液对系统进行清洗。
在设备的设计中采用了再生热交换技术，提高热传输效率，节约能源。
设备组成及技术指标：
由物料桶、输送泵、管式换热器、保持器、过热水系统、CIP清洗系统及控制系统等组成。
操作系统采用图象式人机对话操作界面，便于随时直观地掌握设备各组件的运行状态；控制系统对设备进行温度实时控制、采集和存储。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条