本文選題：40.5kV高壓斷路器 + 新型無(wú)刷電勵(lì)磁直流電機(jī)��； 參考：《沈陽(yáng)工業(yè)大學(xué)》2017年碩士論文

【摘要】：為了提升高壓斷路器(High Voltage Circuit Breaker,HV-CB)運(yùn)行可靠性及智能化操作,本文提出了一種應(yīng)用于40.5kV HV-CB的新型電機(jī)操動(dòng)機(jī)構(gòu)(Motor Operating Mechanism,M-OM)控制系統(tǒng),即新型無(wú)刷電勵(lì)磁直流電機(jī)操動(dòng)機(jī)構(gòu)控制系統(tǒng)。本文主要對(duì)40.5kV HV-CB機(jī)械動(dòng)態(tài)特性、電機(jī)結(jié)構(gòu)及工作原理、電磁特性、驅(qū)動(dòng)控制技術(shù)、及M-OM動(dòng)態(tài)特性仿真等方面研究。并搭建樣機(jī)硬件試驗(yàn)平臺(tái),進(jìn)一步為HV-CB采用M-OM提供可靠理論依據(jù)。主要有以下方面:(1)分析M-OM機(jī)械運(yùn)動(dòng)模型,將HV-CB傳動(dòng)機(jī)構(gòu)的直線運(yùn)動(dòng)轉(zhuǎn)化成電機(jī)軸的旋轉(zhuǎn)運(yùn)動(dòng),分析HV-CB傳動(dòng)機(jī)構(gòu)中的拉桿與驅(qū)動(dòng)電機(jī)之間的運(yùn)動(dòng)對(duì)應(yīng)關(guān)系。計(jì)算斷路器運(yùn)動(dòng)負(fù)載折算到驅(qū)動(dòng)電機(jī)轉(zhuǎn)軸處的等效負(fù)載轉(zhuǎn)矩特性,得到驅(qū)動(dòng)電機(jī)在HV-CB分合閘操作過(guò)程中的等效負(fù)載特性、轉(zhuǎn)軸轉(zhuǎn)角等技術(shù)參數(shù)。(2)詳細(xì)介紹了樣機(jī)的物理結(jié)構(gòu),分析樣機(jī)的工作原理,對(duì)此電機(jī)的磁化與電感特性進(jìn)行了分析,在此基礎(chǔ)上推算了轉(zhuǎn)矩公式及矩角特性。通過(guò)對(duì)比分析,確定了三相不對(duì)稱半橋電路更匹配樣機(jī)的電機(jī)結(jié)構(gòu),并作為功率變換主電路。詳細(xì)介紹了脈寬調(diào)制控制及角度控制兩種控制方式。為樣機(jī)控制系統(tǒng)的設(shè)計(jì)提供理論基礎(chǔ)。(3)運(yùn)用三維有限元方法分析樣機(jī)特有的結(jié)構(gòu)特點(diǎn)對(duì)電磁性能的影響,并確定了樣機(jī)操動(dòng)機(jī)構(gòu)動(dòng)作時(shí)的最優(yōu)勵(lì)磁電流。分析HV-CB樣機(jī)操動(dòng)機(jī)構(gòu)分、合閘動(dòng)態(tài)特性,得出樣機(jī)操動(dòng)斷路器的平均合閘速度為3.15/s,平均分閘速度為4.83/s,滿足40.5kV HV-CB操動(dòng)機(jī)構(gòu)的分合閘要求。(4)搭建了以TMS320F28335數(shù)據(jù)處理芯片為核心的樣機(jī)操動(dòng)機(jī)構(gòu)控制系統(tǒng)硬件實(shí)驗(yàn)平臺(tái)。設(shè)計(jì)了雙閉環(huán)PID控制系統(tǒng),并完成了軟件程序編譯。通過(guò)不同電壓等級(jí)的樣機(jī)空載實(shí)驗(yàn),得到樣機(jī)轉(zhuǎn)速及電流數(shù)據(jù)。經(jīng)過(guò)數(shù)據(jù)分析說(shuō)明樣機(jī)的性能良好,符合電機(jī)設(shè)計(jì)原理,驗(yàn)證了樣機(jī)操動(dòng)機(jī)構(gòu)理論設(shè)計(jì)的正確性。
[Abstract]:In order to improve the reliability and intelligent operation of high voltage Voltage Circuit Breakerbus HV-CBs, this paper presents a new type of motor Operating mechanismM-OM-based control system applied to 40.5kV HV-CB, that is, a new brushless excitation DC motor operating mechanism control system.In this paper, the mechanical dynamic characteristics of 40.5kV HV-CB, the structure and working principle of the motor, the electromagnetic characteristics, the driving control technology, and the simulation of the M-OM dynamic characteristics are studied.And build the prototype hardware test platform to further provide a reliable theoretical basis for HV-CB to adopt M-OM.The main contents are as follows: 1) analyzing the M-OM mechanical motion model, transforming the linear motion of the HV-CB transmission mechanism into the rotating motion of the motor shaft, and analyzing the corresponding relation between the pulling rod and the driving motor in the HV-CB transmission mechanism.This paper calculates the equivalent load torque characteristics of the circuit breaker from the moving load to the driving motor shaft, obtains the equivalent load characteristic of the drive motor during the HV-CB switching operation, and introduces the physical structure of the prototype in detail, such as the technical parameters, such as the rotation angle of the shaft, and so on.The working principle of the prototype is analyzed, the magnetization and inductance characteristics of the motor are analyzed, and the torque formula and torque angle characteristic are calculated.Through comparison and analysis, the motor structure of the three-phase asymmetrical half-bridge circuit is determined to match the prototype, and it is used as the main circuit of power conversion.Two control methods, pulse width modulation control and angle control, are introduced in detail.This paper provides a theoretical basis for the design of the prototype control system. (3) the influence of the structural characteristics of the prototype on the electromagnetic performance is analyzed by using the three-dimensional finite element method, and the optimal excitation current of the prototype operating mechanism is determined.The dynamic characteristics of operating mechanism and closing of HV-CB prototype are analyzed.It is concluded that the average closing speed of the prototype operating circuit breaker is 3.15 / s and the average opening speed is 4.83 / s, which meets the 40.5kV HV-CB operating mechanism's closing requirements.) the hardware experimental platform of the prototype operating mechanism control system based on TMS320F28335 data processing chip is built.A double closed loop PID control system is designed, and the software program is compiled.The data of speed and current of prototype are obtained by no-load experiment of different voltage levels.The data analysis shows that the performance of the prototype is good and accords with the principle of motor design, and the correctness of the theoretical design of the prototype operating mechanism is verified.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM561;TM33;TP273

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