环节器

In addition, the low-temperature heat utilization in deaeration of desahed water and temperature elevation of deaerated water is explored on the basis of refinery system integration and optimization.

其次从炼油厂系统整合优化角度探讨除盐水在除氧环节以及除氧水在升温环节低温热利用的途径，通过技术改进和系统低温热利用相结合，探讨芳烃精馏塔实现回收低温热和消除装置瓶颈的可行性，提出利用区域除盐水集中升温除氧以及区域除氧水先集中升温再进汽包产汽的芳烃脱庚烷塔低温热利用方案，不仅能回收67％的低温热，产生的1.4MPa低压蒸汽（10t／h）还可代替连续重整装置脱已烷塔重沸器的中压蒸汽。

The circuit topology of the differential Forward DC-DC converter mode inverter with high frequency link was proposed. Circuit topology, transient voltage control strategy, steady principle characteristic and design criteria for the key circuit parameters were deeply investigated.

提出差动正激直流变换器型高频环节逆变器电路拓扑，并对该变换器的电路拓扑、瞬时电压控制策略、稳态原理特性、关键电路参数设计准则等进行了深入地分析研究。

The topology of two-stage matrix converter given based on the concept of fictitious DC link of matrix converter and dual space vector modulation strategy of TSMC was studied.

在矩阵变换器虚拟直流环节的思想上，给出了双级矩阵变换器的电路拓扑，仿真研究了双级矩阵变换器的双空间矢量调制策略。

A detailed analysis of the main circuit introduction, control method and working principle of the direct-drive wind energy conversion system are given to introduce the two important parts a of this paper: First part is the control method of the multiple boost convertor, the important instantaneous current control method of this paper is given through the analysis of the main circuit structure, control method and working principle. Then a steady-state analysis for low-frequency, a high-frequency component analysis, and a closed-loop tracking performance analysis for dynamic response are provided to analyze the method proposed; And the second part is the control method of invertor.

在系统变流器整体结构分析的基础上，引出本文重点研究的两个变流环节的控制：第一部分是系统升压斩波器的控制，通过分析相关主电路结构、原理，建立了数学模型，引出本文重点研究的瞬时值控制策略的概念和具体实现，并对升压斩波器的瞬时值控制策略进行了详细的高频、低频模型分析和稳态、动态性能分析；第二部分是系统并网逆变器的控制，通过对逆变器主电路的数学建模和控制要求分析，研究了并网逆变器的瞬时值控制策略，包括电感电流控制内环和直流电压控制外环的具体设计和实现方法。

In this paper, some problems that have to be faced with in the application of SPLL to static synchronous compensator are analyzed, and two improvements of SPLL are proposed. The first one is removing the filtering function of lead-leg element into the prepositive delayed signal cancellation element to remedy the difficulty in deciding its parameters; the second one is directly taking the post-PI regulation output of q-axis voltage as error signal of phase to call off the forward integrating element.

分析了软锁相环应用于静止同步补偿器时面临的若干问题，并提出了2方面的改进方案：一是针对超前/滞后环节参数选取困难的问题，将其滤波功能转移到前置延时信号消除环节中；二是q轴电压经PI调节的输出直接作为相位的误差信号，减少了前向积分环节。

Research and Design of Push-Pull Forward and Soft-Switching Circuit

本文结合推挽正激直流变换器和高频脉冲直流环节逆变器的优点，提出了一种适用于低压大电流输入场合的逆变器，并对构成这种逆变器的电路拓扑、SPWM控制策略、稳态原理特性进行了深入的分析研究。

In the process of structure designing, separating disposal, i.e. decompression device and desuperheater were disposed apart, was adopted.

在减温减压器本体结构设计工作中，采用分体式布置，即减压环节和减温环节相互独立布置。

In order to analyze and design the fiber optical isolator with YIG sphere, it is necessary to thoroughly research on the coupling efficiency, the optimization and the measurement for the coupling of monomode fibers with a lens as well as the theoretical analysis and experimental measurement of "Lamipol"polarizer.

本文介绍有关光纤隔离器的一些研究内容，着重探讨一种以磁光晶体球为主体的光纤隔离器，引入Lamipol高性能薄膜偏振器，使器件调节环节少，有利于器件的小型化。

This utility model is combined with controller series, attain the required voltage, and then put the resulting series DC voltage by oscillators converts AC voltage.each solar battery pack over-discharge buildingup, dangelmayer, adopted by the series of microprocessor and complementary components of the circuit to control this control circuit management, together with the ciyutuo program software to make up the " serries solar battery charging and discharging controller ", do not need inverter adrenotensin, you can be used directly for energy saving lamps or other to adapt to the mains voltage electrical and electronic appliances, and thereby save General inverter converts adrenotensin faches as a result of waste, and therefore reduce the time of conversion of electrorheological, Terminal′s makes solar power and use have become a stable and reliable.

本串联型太阳能电池充放电控制器就是结合控制器之间的串联，达到所需电压，再把串联所得到的直流电压，通过震荡器转换为交流电压。每个太阳能电池组对蓄电池的充、放电，采用串联的由微处理器及配套元件组成的电路进行控制管理，此控制电路并配合配套的程序软件组成了&串联型太阳能电池充放电控制器&，不需要逆变器升压，就可以直接使用节能灯或者其它适应市电电压的电子电器设备，从而省掉常规逆变器转换升压环节所造成的浪费，并因此减小转换时低压端的电流，使太阳能发电和使用都变得稳定可靠。

However it can not be widely used in industry because of commutation problem, low voltage transformation ratio and complicated PWM method.

本文介绍了一种新型的矩阵变换器—稀疏矩阵变换器，它具有传统的矩阵变换器的优点：四象限运行；没有直流环节的储能元件和高质量的输入电流/输出电压波形。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。