查询词典 converter

On the structure of system, the three-level converter of three phase bridge of the equipment in main circuit is built with IPM module based on IGBT, and its controller is made up of double CPU.

在系统结构的实现上，该装置的主电路采用基于IGBT的智能模块IPM构成三相桥三电平变流器；控制器采用双CPU结构，以DSP(TMSF2 4 0 )作为主控制器，其任务是采样、计算和实时控制；以 80C196作为辅助控制器，专门处理外挂键盘输入、数据显示查询及与上位机通信。

This board uses two chips, six channels A/D converter and phase locking synchronous technology for collecting three-phase voltage and current signals in timing and equal-time cycle sampling ways, and the gained data make more reasonable for power quality norm analysis.

并采用了两片六通道高速A/D转换器和运用了锁相同步技术，对三相电压和电流信号能进行定时采样和等间隔采样，这样得到的数据对于下一步电能质量指标进行分析更为合理。

Referring to a plentiful literature all over the world, it chooses a full-bridge shift phase converter circuit topology with a capacitance can insulate direct current and an saturation inductance in the origin side.

在参阅了大量国内外文献的基础上，选取了一种原边加隔直电容和饱和电感器的单相全桥移相软开关变换器拓扑结构。

Proposed DSP engine consists of rectangular to polar converter and digital phase modulator that are designed based on the COordinate Rational DIgital Computer and Direct Digital Frequency Synthesizer algorithm respectively.

所提出来的数位讯号处理引擎包含了座标转换器和数位相位调变器，两者分别是利用数位座标旋转器以及数位频率合成器来实现。

This board has proper strategy to get the data for power quality analysis, because it uses two chip, six channel analog-to-digital converter and phase locking synchronous technology, which make it able to collect three phase electric voltage and electric current signals in timing sampling and equal-time cycle sampling ways.

并采用了两片六通道高速A/D转换器和运用了锁相同步技术，对三相电压和电流信号能进行定时采样和等间隔采样，这样得到的数据对于下一步电能质量指标进行分析更为合理。

Controlling-program calls some functions from DDL, and outputs high-level to the digital output channels of the card which are connected with two switches. When the state of switches changes, the phase of the frequency converter' output-voltage changes.

控制程序调用动态链接库函数给采集卡的数字输出通道置位，通过控制两个继电器的通断来控制变频器的输出电压相位，达到控制试验机的加载电机转向的目的。

Based on the voltage pulse width modulation control strategy with single transistor chopped, the behavior patterns of chopping current and freewheeling current were analyzed under the single phase faults of power converter.

基于电压脉宽调制斩单管控制策略，分析变换器单相功率管故障情况下，斩波电流和续流电流的故障表现。

Double-frequency three-phase bridge converter in three phase power factor correction, three-phase active power filter are studied theoretically and experimentally.

本部分研究内容提出的双频变换器理论，申请人和导师合作分别于2006、2005年申请成功国家自然科学基金项目&高效率高性能双频变换器理论及其控制&(50677071)、教育部博士点基金项目&双频变换器理论及其应用&(200611012)和重庆市自然科学重点基金项目&新型高效电能变换技术理论及控制研究&(2005BA6017)，发表相关论文9篇。

Phase Shift Controlled Dual-Transformer Flyback Converter for.

相移控制双变压器返驰式转换器之传导性电磁干扰抑制。

The thesis mainly researches on the single phase AC/AC converter in the topologies including AC_Buck and AC_Cuk. Firstly, the operating principles of the two converters are analyzed in detail and the rules of their parameters design are educed; The commutation of their power switches which is the key of these topologies to realize is analyzed in detail and a feasible solution which can be named RCD-Commutation mode is presented and proved effectual by theory analyses and simulation results.

本文首先分析了AC_Buck变换器的变换原理，得出了电路参数设计准则；继而对电路实现的难点即功率管换流问题进行了深入分析，并得出了一种可行的解决方案即RCD换流方案；作为对简单拓扑单相直接AC/AC变换器控制策略的探索，本文以AC_Buck为平台，对电压单闭环瞬时值控制方案进行了研究，在理论分析和仿真研究的基础上设计并制作了一台采用RCD换流、电压单闭环瞬时值控制的AC_Buck变换器原理样机。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。