查询词典 inverter

We are a professional factory to produce Inverter Transformer、Power Factor Corrector、electronic power transformer、audio frequency transformer、 switching power transformer and inductance coil , main products are exported to America, Japan and Taiwan mostly.

本公司是生产各种贴片变压器、功率因素校正器、电子电源变压器和音频变压器的专业厂家，产品大部份与国内名牌整机厂家配套、出口美国、日本和台湾等地。

Give full play to the company's technical superiority inverter power supply to induction coil electrical parameters to achieve the best condition, improve efficiency and reduce power consumption.

充分发挥公司变频电源的技术优势，使其感应线圈电气参数达到最佳状态，提高了效率，降低了电耗。

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。

This paper showing each circuit's schematic of design anddescribing the basic reliability design technologies for Converterand Inverter, it's design ideology is typical and can use inpractical engineering.

本设计按照模块化的设计思想，给出了各个部分电路的设计思路和硬件原理图，并进行了详细的理论设计和实验测试。

Even 10% upper of input voltage, the inverter efficiency is over 94%.

l 10%以上的输入，逆变器的效率都超过94%。

Basing on analyzing the work principle of the current control methods, it can be given the detailed derivation process basing on the grid and inverter pulse width modulation algorithm and the duty cycle of the instantaneous current control.

在分析了电流控制方法工作原理的基础上，给出了基于瞬时电流控制的并网逆变器的脉宽调制算法和占空比的详细推导过程。

Finally,this paper discusses the problems of neutral point control that exists in the three-level inverter, and adopts two methods to control neutral voltage balance namely judging power direction and detecting instantaneous current value.

最后论文还对多电平逆变器存在的中点电位漂移问题进行了讨论，并采用两种方法来实现中点电压平衡，即判别逆变器功率流向法和检测瞬时电流值方法。

It is due to PID controller parameters are not designed well. The design method of inverter instantaneous voltage PID controller based on pole-assignment is proposed for the first time in this paper.

针对逆变器电压单环PID控制系统性能不很理想的原因进行了分析，指出其原因是PID控制器参数设计方法欠佳。

To control the output waveform, the mathematic model of three-level inverter is set up. The output voltage instantaneous value control system is employed to obtain high quality output waveform.

为了对输出电压的波形进行控制，该文建立了三电平逆变器的数学模型，使用输出电压瞬时值控制系统来获得高质量的输出电压波形。

This paper presents a feed forward and double-loop control technology of inverter,its double-loop control including a capacitor current inner loop control and instantaneous voltage outer loop control.

高质量的输出有两方面的指标要求：稳态精度高和动态响应快，即要求逆变器的控制系统具有很好的静态和动态特性。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。