论文总字数：25481字

摘 要

目前，PWM逆变器在商业、工业和民用的系统中使用的更加频繁，比如很大一部分电机的驱动系统就是使用PWM技术。使用三相逆变器时，因为脉冲输出的不对称性，系统中必然存在共模电压。研究表明，PWM逆变器产生的高频共模电压及较大的dv/dt给系统带来很多负面效应，如共模电压、共模电流、轴电流、电机终端过电压(由于电机与PWM逆变器使用长线电缆引起)和电磁的干扰等。因为强制执行电磁兼容的标准，因此PWM逆变电机驱动系统所产生的电磁干扰也更加受到人们的重视^[1]。为了满足国际电磁兼容标准的要求，必不可少的一项改进措施就是加设滤波器。

LC滤波器，也被称为无源滤波器，是由L、C和R的不同组合而构成的滤波电路，可滤除一次或多次谐波，最普通易于使用的无源滤波器结构是将电感与电容串联，可对主要次谐波构成低阻抗旁路；单调谐滤波器、双调谐滤波器、高通滤波器都属于无源滤波器。无源滤波器拥有结构简单、成本低廉、运行可靠、运行成本较低等优点，至今仍然是主流的谐波治理途径。LC滤波器一般用于较为精确的波形系数场合，对于窄带，要求陡峭的边缘滤波波形，它是不可用的。一般情况下，LC滤波器分为星型结构和三角结构两种。

本文以带无源滤波器的驱动系统为研究对象，通过对滤波器工作原理、稳态模型、小信号的分析，并且根据实际的设计要求，设计了带无源交流滤波器的驱动系统，并对滤波器的后期调整进行了研究。本文的主要研究内容包括：研究三相感应电机工作原理和矢量控制原理、研究基于LC滤波器的逆变器对电机性能影响、具体设计了LC滤波器的驱动系统，并熟悉学习了电力电子仿真软件SABER，在SABER平台上搭建平台进行仿真。

本文的研究内容对滤波器加入驱动系统的领域中更深入的研究和使用拥有一定的理论和实际意义。

关键词： LC滤波器；驱动系统；三相逆变器；矢量控制

Research on the performance and control of the drive system with LC filter

Abstract

Currently, more frequent PWM inverters in commercial, industrial and residential systems, such as a large part of the motor drive system is to use PWM technology. The application of the three-phase inverter, because the asymmetry of the pulse output, there must be a common-mode voltage systems. Studies have shown that, PWM inverter generates high frequency common mode voltage and a large dv / dt to system brings a lot of negative effects, such as common-mode voltage, common-mode current, axial current, motor terminal overvoltage (due to motor and PWM inverter with long cables cause interference) and electromagnetic and the like. Since the enforcement of the electromagnetic compatibility standards, so electromagnetic interference PWM inverter motor drive system generated more attention has been paid. In order to meet international EMC standards, essential improvements is to add a filter set^[1].

LC filter, also called passive filter, the filter circuit by different combinations of L, C and R are constituted, can filter out one or more harmonics, passive filter structure is easy to adopt the most common The inductors and capacitors in series, can constitute the main harmonic low-impedance bypass; single-tuned filter, double-tuned filter, a high pass filter are all passive filters. Passive filter has a simple structure, low cost, reliable, low running costs, etc., is still the mainstream of harmonic treatment methods. LC filter is generally used for more precise form factor case, narrowband, requires the filtered waveform steep edge, it is unavailable. Under normal circumstances, LC filter is divided into two star structure and triangular structure.

In this paper, the drive system with a passive filter for the study, through the filter works, the steady-state model, small-signal analysis, and based on the actual design requirements, design drive systems with passive exchange filter, and late adjustment of the filter were studied. The main contents of this paper include: research phase induction motor vector control principle works and study the effects of LC filter inverter motor performance based on the specific design of the LC filter of the drive system, and are familiar with the power electronics simulation study Software SABER, SABER platform on a platform for simulation.

Contents of this paper to filter the field to join the drive system more in-depth research and application has a certain theoretical and practical significance.

Keywords： LC filter; Drive system; Three phase inverter; Vector control

目 录

摘要.................................................................................................I

Abastract......................................................................................... II

1. 绪论.................................................................................... 1

1.1 滤波器的背景及意义....................................2

1.2 滤波器国内外发展状况..................................3

1.3 驱动系统简介..........................................4

1.4 驱动系统矢量控制发展状况.............................5

1.5 本文研究的内容.......................................7

1. 驱动系统控制技术与性能研究.......................................7

2.1 三相感应电机工作原理................................8

2.2 三相感应电机矢量控制原理............................9

2.3 矢量控制的坐标变换..................................10

2.3.1 Clarke变换.....................................11

2.3.2 Park变换.......................................13

2.3.3 直角坐标系和极坐标系间的变换...................14

2.4 本章总结............................................15

1. 加入滤波器的作用与效果................................................16

3.1 滤波器对三相逆变器的影响...........................16

3.2 基于LC滤波器的逆变器对于三相电机的影响...........16

3.3 LC滤波器的结构....................................18

3.4 加入滤波器的作用...................................20

3.4.1共模电压.......................................20

3.4.2 共模电流（漏电流）............................21

3.4.3 轴电压......................................21

3.4.4 轴电流......................................22

3.4.5 电机端子过电压..............................23

3.5 本章总结..........................................23

1. 带LC滤波器的驱动系统的设计与仿真......................24

4.1 滤波器的设计......................................24

4.1.1 滤波器系统图..................................24

4.1.2 滤波器参数设计原理.............................24

4.2 驱动系统加入滤波器的仿真...........................28

4.3 本章小结 .........................................30

1. 总结与展望....................................................................31

5.1 总结........................................31

5.2 展望.........................................31

参考文献.......................................................................................32

致谢.............................................................................................34

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