查询词典 converters

This project is to perform experimental tests and economic evaluation of the proposed frequency converters on freezers to effectively reduce petroleum consumption of engine generator on domestic fishing boats.

其优点一方面可以将传统冷冻机达到更节能的目的而降低来自引擎机组的燃油损耗，一方面亦可降低对环境的污染，值得推广应用在国内的渔船上。

Based on the analysis of traditional converters, a novel circuit is proposed, what it defers from traditional two switches/phase converter is that it has not dump resistance, and that the rise time and falling time of the phase currents can be effectively reduced, and the torque and output power performance of the system is improved .

该文的研究目的在于设计开关磁阻电机并通过对控制理论在SRD系统中的应用进行深入的分析、发展和创新，在保证SR电机的固有优点前提下，改善或消除其存在的缺点，提高系统的性能，逐步开始出相应的产品，进而推广SR电机的应用。

Based on the analysis of traditional converters, a novel circuit is proposed, what it defers from traditional two switches/phase converter is that it has not dump resistance, and that the rise time and falling time of the phase currents can be effectively reduced, and the torque and output power performance of the system is improved.

在分析了常用的功率变换电路基础上，提出了一种基于双开关功率变换电路的改进电路，该电路与常规双开关功率变换电路的区别在于不需要能耗制动电路，能够利用关断相绕组中储存的能量有效缩短相电流的建立和关断时间，改善SR电机高速运行时输出转矩下降和转矩脉动严重的问题，并且电机的输出功率也得到提高。

In this paper, with the Buck circuit topology as the exampleof zero-transition soft-switching PWM DC/DC converters, theoperation principle and characteristics of the conventionalZVT-PWM converter and a novel two phase ZVT-PWM converter areanalyzed in-depth respectively.

文中以Buck型电路拓扑作为研究零过渡PWM软开关DC／DC变换器的代表，分别对传统ZVT-PWM变换器和一种新型的两相ZVT-PWM变换器的工作原理及特性进行了深入的分析。

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。

High-quality mic preamps are teamed with professional A/D converters for excellent sound.

高质量话筒前置放大器和专业的A/D转换器确保出色的音质。

New vehicle electrical system converters and architectures have reduced the weight of the power supply systems used in rail vehicle s.

新型辅助变流器及其新结构设计可减轻有轨车辆辅助电源装置的质量。

It was amazing to see and use adapter/converters to go from 50 to 51.5 Ohms.

看到和用到50欧姆到51.5欧姆的适配器/转换器，感觉很奇怪的。

The digital users signals comprising in-phase component and quadrature component are converted to analog baseband signals by digital-to-analog converters 104 and 114, which are followed by lowpass filters 106 and 116 for removing harmonics at unwanted frequencies.

包括同相分量和正交分量的数字用户信号通过数模转换器104和114转换成模拟基带信号，在数模转换器104和114的后面具有低通滤波器106和116，低通滤波器106和116用于去除在不期望频率处的谐波。

These converters are characterized by their large voltage conversion ratio, high output voltage.

它是为满足参量阵声纳的现场使用而研制的，同样适用其他场合变换器有四个特点：变换比大；输出电压高；负载电流大；开关频率高。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48