查询词典 inverter

The structure of hardware and software for the SIEMENS MM serial inverter which are linked to the network and its application in the fieldbus are analyzed . The TOP architecture of the system ,the establishment of master and slave station and access to GSD document of inverter are describled in detail.

PROFIBUS现场总线是工业自动化控制领域最流行的控制技术之一，针对该总线的工作原理和特点，本文介绍了PROFIBUS—DP的特点，探讨了SIEMENS MM系列变频器连入PROFIBUS—DP的硬件和软件结构及在该系统中的应用情况。

The application and design of the vector inverter for the slitter based on Inovace inverter are described.

介绍了基于无速度传感器的矢量变频器在分切机设备上的应用方案及调试时应注意的问题。

Combined with some problems in debugging, it puts most emphases on the factors which affect the efficiency of inverter; does some simulation and experiments analysis and gets a lot useful results. The paper gets a serious of significant results on how to improve efficiency of inverter such as the choice of switch parts, the choice of parameters of transformer design, and the adjustment of syntony capacitance and loop inductance, which offers better measures for later design of inverters under field operation conditions.

结合调试过程中的问题，重点对影响逆变电源效率的各种因素进行了仿真和实验分析，得出了许多有益的结果，获得了一系列关于电源开关器件的选择、变压器设计参数和绕制方法的选择、软开关电路中谐振电容和电感的调节等对逆变电源效率的提高有显著作用的结论，为下一步野战条件下逆变电源的设计提供了较好的依据。

The proposed inverter has a new auxiliary resonant commutation cell. It provides that all main switching power devices in the soft-switching inverter operate at zero-voltage-switching turned-on and the auxiliary switches operate at zero-current-switching turned-off. In addition, this thesis presents an improved control scheme to minimize the operation of auxiliary resonant circuit for efficiency improvement.

所研制之柔切式数位变流器，系利用新型辅助谐振单元，使主功率开关操作於零电压切换，辅助开关操作於零电流切换，在此也提出改善之控制方案，以避免多余的辅助开关切换，因此能有效降低谐振电流所造成的额外导通损失，以提升系统之效率。

Our products include Voltage Stabilizer, EPS Intelligent Emergency Power Source, UPS , storage batteries, frequency inverter, soft starter, Charger, Power supply inverter, Transformer, circuit breaker, electric welding machine and others of more than 50 series, over 3000 types which.

主要生产的产品有稳压电源、EPS、UPS电源、蓄电池、变频器、软起动器、充电器、逆变器、变压器、断路器、建筑电气等五十多个系列，3000多个品种的电源产品。

In this paper, quantitative analysis on exchange between inverter unit of DVR and grid is made when voltage temporarily drops. Then it studys detailedly the relationship of output voltage and power amang inverter unit of DVR ,grid and load.Finally Matlab simulations of all the compensation method are made.

本文定量分析计算电网电压暂降时DVR 逆变单元与电网的功率交换情况，详细研究逆变单元在各种补偿策略下的输出电压和有功功率与故障前后电网电压、负载电压和参考相量的具体关系，最后通过Matlab 仿真研究各补偿方法。

The study has completer the design of two-phase inverter and made up of the two-phase inverter-motor system for experimental use .

本项研究完成两相逆变器的设计，并组成了试验用的两相逆变器—异步电动机系统。

The dissertation theoretically analyses software direct compensating motor speed loss of open loop pump-control-motor speed governing system with inverter. The motor speed loss formula and compensating coefficient formula are given, and this provides the theoretic foundation for using software direct compensating method. The dissertation puts forward the control scheme of software direct compensating motor speed loss of open loop pump-control-motor speed governing system with inverter, and the method of "load sectionalization linear compensation".

具体来说，本文的主要贡献包括如下几个部分：(1)对软件直接补偿开环变频泵控马达调速系统的马达转速降落进行了理论分析，给出了马达转速降落公式和补偿系数公式，为软件直接补偿开环变频泵控马达调速系统的马达转速降落提供了理论依据；提出了变频泵控马达调速系统的负载补偿控制方法和&负载分段线性补偿&方法，由此提高了调速系统的速度刚性和调速精度。

Referenced to the CSR's trilogic PWM signal generation, an approach to achieve lowstress natural commutation of switching devices by reshuffling the vector composition sequence, resulting reduced switching loss. With the background of and well instanced by the Xinjiang Autonomous Region's Key SciTech Project"Solar Photovoltaic grid-connected inverter", the dissertation work implemented the new approach of a grid-connected PV inverter that was of single-phase VSR topology and with MPPT .

在研究了两类电网不平衡时的VSR控制策略基础上，提出了一种新型的基于无阻尼振荡控制器的VSR不平衡控制策略，在简化控制结构的同时，有效地改善了电网不平衡时的VSR控制性能；通过二、三值逻辑开关函数间的转换，系统地描述了三相CSR三值逻辑PWM信号发生中的状态切换；结合三相CSR三值逻辑PWM信号发生规律，提出了通过调整矢量合成顺序而使功率管获得自然换相的低电压应力SVPWM控制，从而有效地降低了功率管的开关损耗。

The efficiency of a novel aircraft static inverter based on cascaded inverter is mainly rested with its DC link.

基于级联技术的新型航空静止变流器的效率主要取决于其直流变换环节。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。