饱和器

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

Also, the characteristic of saturator is analyzed by a chart of equilibrium line and operation line.

利用水气之间的平衡线和操作线的关系，定性分析了饱和器的工作原理和特性。

In this dissertation, metal structured packing is applied to the study of saturator, and the research job focuses on two aspects, theory and experiment.

因此，本文将规整金属填料应用于饱和器的特性研究，研究工作主要从理论和实验两个方面展开。

This paper makes a through investigation on the performance of HAT cycle, including the performance of the saturator and the part-load performance of HAT cycle.

本文在归纳总结国内外学者研究成果的基础上，对HAT循环的流程及其变工况性能进行了系统的研究，并从理论及实验两方面对饱和器的性能进行了较为全面的分析研究。

The mathematical model computes the one-dimensional distributions of air temperature and moisture content along the path of air flow in the saturator.

理论上，本文推导了饱和器性能控制方程，建立了饱和器内传热传质过程的一维数学模型。

It is found that the ratio of water flux to air has vital influence on the saturator performance, the higher the ratio value the higher the parameters of outlet humid air, but at the some time the outlet water temperature will also become higher, which will decrease the effectiveness of saturator.

水气比对饱和器的工作性能影响很大，水气比较大时，可以获得较高的出口湿空气参数，但同时也会使出口水温增大，饱和器能效降低。

Under the condition that coking process and ratio of coal,rank of coal were in a relative stable condition,qualitative analysis was done to the relationship among ammonia yield and residual ammonia exhausted gas entering into saturator or not,gas desulfurization unit location,the primary cooling way,blending moisture,gas collection temperature and so on,the various factors affecting degree to the yield of ammonia were concluded,in order to organize production scientifically and rationally,and provide a reference to the same industry to solve the problem of the ammonia output fluctuation.

通过对焦化厂硫铵工序的长期跟踪研究，明确了造成硫铵产率波动的主要因素，在焦化流程和配煤比、煤种相对稳定的情况下，对硫铵产率与剩余氨水蒸氨尾气是否进入饱和器、煤气脱硫装置位置、煤气初冷方式、配煤水分、煤气集合温度等因素之间的关系进行了定性分析，得出了以上各种因素对硫铵产率的影响程度的结论，以便科学合理地安排硫铵的生产计划，并为同行业解决硫铵产量波动的问题提供参考。

A systematic study on the crystallization process of ammonium sulphate has been performed in this thesis.

为了改善饱和器结晶硫酸铵过程中，生成的晶体颗粒较小，粒度分布不均匀，色度不理想，并伴有晶体聚结现象发生等问题。

In the model, coefficient E is defined to evaluate the resistance in heat transfer between water and air.

从传热传质的基本原理入手，详细分析了饱和器内水气之间的传热传质过程，建立了饱和器的一维数学模型。

These prove that the transfer function we deduce can describe the trends of pipe-shell heat transfer organization.The quality of steam generated from the first flash recipient is the main guide line for steam generator.

根据热平衡理论建立闪蒸室动态过程的仿真模型，应用整段线性化的简化方法得到闪蒸室产生蒸汽量与补给水流量、饱和器加热量的传递函数。

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。