变换器

Soft switching can improve the converters efficiency and reduce EMI. In comparison of some methods of approaching soft switching, this thesis presents a Diode Auxiliary Resonant Commutating Network which is composed by an auxiliary bridge and a resonant commutating inductor. This topology not only well realizes zero voltage switching, but also overcomes the parasitic oscillation in the secondary side Diodes. Simultaneously, this topology makes both the secondary side diodes and auxiliary diodes operate on the soft switching state too, which reduces more switching losses and provides requirement for the system to run stably under the condition of self-cooled.

软开关能够提高变换器的效率和降低EMI，通过比较目前多种实现软开关技术方案，本文研究了一种由辅助桥臂和谐振电感组成的二极管辅助谐振换流网络，不但很好地实现了ZVS，并且克服了副边二极管上寄生振荡；同时，该拓扑也使副边二极管和辅助二极管都工作于软开关状态，进一步降低了开关损耗，为系统能够在自冷的条件下稳定运行创造了条件。

In the course of design and analysis for Buck DC/DC converter, it is very important to analize the output voltage ripple formed in operating.

在Buck DC/DC变换器的分析与设计中，对开关工作时所形成的电压纹波的分析是至关重要的。

To the question of regulating the output voltage and avoiding ripple of series resonant converters, State feedback controller is designed with conversation of energy.

为了调整输出电压及解决纹波问题，本文从能量守衡的角度设计串联谐振变换器的无源性状态反馈控制器。

With the help of system mathematical model, the contradiction between increasing dynamic response of converter and decreasing the ripple of output voltage is elaborated based on the analyses of mechanism of the converter's dynamic regulation problem.

因此，借鉴交流电机理论中的空间坐标系概念，建立了该变换器的开关函数，提出了系统的数学模型，解决了用单相等效电路法分析三相PFC电路存在的问题。

Improvement in efficiency and thermal analysis on LED drivers are particularly important in improving its reliability.

提高LED驱动电源的效率和进行变换器的热分析，对提高LED驱动电源的可靠性具有十分重要的意义。

The prototype was completed, and the simulation and experiment results show that the permanent magnet synchronous motor system of matrix converter based on the hybrid modulation has good control performance and high input power factor.

原理样机试验结果表明，采用空间矢量SPWM电流控制的矩阵变换器-永磁同步电机系统不仅达到了良好的矢量控制，而且也提高了输入侧的性能。

A synchronous rectifier Buck converter using FC-IPEM is built to test the electrical performance.

采用半桥FC-IPEM构成同步整流Buck变换器，进行了电气性能测试。

Multiphase interleaving synchronous Buck converter is widely adopted for voltage regulator module.

多相交错型同步整流降压式变换器广泛地应用于微处理器电压调整模块(voltage regulator module，VRM)设计中。

The operation of RCD clamped flyback converter based on peak current control are presented,and the design criterion of the key parameters such as RCD clamp circuit is proposed.

本文论述了峰值电流控制RCD箝位反激变换器的原理，并首次提出了RCD箝位等关键电路参数设计准则。

The. Design. and. Realization. of. RCD. Clam州Flyback ...

RCD箱位反激变换器的设计与实现。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐