本文選題：雙余度永磁同步電機(jī) + 電磁參數(shù)與特性��； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：為了提高航天作動(dòng)系統(tǒng)的運(yùn)行可靠性,本文將余度技術(shù)與電機(jī)相結(jié)合,提出了雙余度永磁同步電機(jī)。雙余度永磁同步電機(jī)既具有永磁同步電機(jī)調(diào)速范圍寬、動(dòng)態(tài)響應(yīng)快以及功率密度高的優(yōu)點(diǎn),同時(shí)又能提高電機(jī)系統(tǒng)的安全性和可靠性。成為越來(lái)越多學(xué)者的研究對(duì)象。本文以一臺(tái)20極24槽永磁同步電機(jī)為研究對(duì)象,先分析傳統(tǒng)永磁同步電機(jī)的運(yùn)行性能。在傳統(tǒng)電機(jī)模型的基礎(chǔ)上,對(duì)電機(jī)重新分相,得到幾種不同結(jié)構(gòu)的雙余度永磁同步電機(jī)。對(duì)這幾種雙余度永磁同步電機(jī)進(jìn)行分析計(jì)算,與傳統(tǒng)電機(jī)進(jìn)行對(duì)比,并將幾種雙余度電機(jī)的性能也進(jìn)行對(duì)比分析。論文首先分析了雙余度永磁同步電機(jī)的運(yùn)行原理和運(yùn)行模式,介紹了雙余度永磁同步電機(jī)的結(jié)構(gòu)和特點(diǎn),建立了ABC三相坐標(biāo)系下以及dq0坐標(biāo)系下的數(shù)學(xué)模型。對(duì)不同結(jié)構(gòu)的雙余度永磁同步電機(jī)進(jìn)行電感的解析推導(dǎo),為后面的仿真分析提供理論參考。其次,建立了傳統(tǒng)電機(jī)和幾種不同結(jié)構(gòu)的雙余度電機(jī)模型,并利用有限元軟件進(jìn)行仿真分析。對(duì)比了雙余度電機(jī)與傳統(tǒng)電機(jī)的空載特性,在空載特性保持基本相等的前提下,進(jìn)行其他性能的對(duì)比分析。從電機(jī)電感角度,重點(diǎn)分析了雙余度電機(jī)的交叉耦合特性。并仿真計(jì)算了交叉耦合特性對(duì)電機(jī)電磁轉(zhuǎn)矩波動(dòng)特性的影響。再次,利用磁勢(shì)乘磁導(dǎo)法解析推導(dǎo)了雙余度永磁同步電機(jī)的氣隙磁密,利用麥克斯韋應(yīng)力法分析了雙余度永磁同步電機(jī)的電磁力波特性。利用有限元軟件計(jì)算了雙余度電機(jī)在空載以及額定負(fù)載情況下的電磁力波特性,并與傳統(tǒng)電機(jī)進(jìn)行對(duì)比分析。最后,介紹了傳熱學(xué)在電機(jī)中的應(yīng)用,分析了真空溫度場(chǎng)計(jì)算的特殊性,推導(dǎo)了電機(jī)的熱傳導(dǎo)微分方程,并確定了真空溫度場(chǎng)計(jì)算的邊界條件。利用二維有限元軟件計(jì)算了電機(jī)的各種損耗,確定了電機(jī)的熱源及電機(jī)各部件的導(dǎo)熱系數(shù)。利用Workbench軟件對(duì)一種雙余度電機(jī)進(jìn)行真空溫度場(chǎng)的計(jì)算。
[Abstract]:In order to improve the operational reliability of space actuation system, this paper presents a double redundancy permanent magnet synchronous motor (PMSM) by combining the redundancy technology with the motor. Dual redundancy PMSM not only has the advantages of wide speed range, fast dynamic response and high power density, but also can improve the safety and reliability of the motor system. Become the research object of more and more scholars. In this paper, a 20 pole 24 slot permanent magnet synchronous motor (PMSM) is studied, and the performance of the traditional PMSM is analyzed. Based on the traditional motor model, several kinds of dual-redundancy permanent magnet synchronous motors with different structures are obtained. This paper analyzes and calculates the two kinds of permanent magnet synchronous motors, compares them with the traditional ones, and compares the performances of the two kinds of permanent magnet synchronous motors. This paper first analyzes the operation principle and operation mode of double redundancy permanent magnet synchronous motor, introduces the structure and characteristics of double redundancy permanent magnet synchronous motor, and establishes the mathematical model under ABC three-phase coordinate system and dq0 coordinate system. The inductance of double redundancy permanent magnet synchronous motor with different structures is deduced, which provides a theoretical reference for the simulation analysis. Secondly, the traditional motor and several kinds of double redundant motor models with different structures are established, and the finite element software is used to simulate and analyze them. The no-load characteristics of dual-redundancy motor and traditional motor are compared and the other performances are compared and analyzed on the premise that the no-load characteristics are basically equal. From the angle of motor inductance, the cross-coupling characteristics of double redundancy motor are analyzed. The influence of cross-coupling characteristics on electromagnetic torque ripple characteristics of motor is simulated and calculated. Thirdly, the air-gap magnetic density of double redundancy permanent magnet synchronous motor is derived by the method of magnetic potential multiplying magnetic conductance, and the electromagnetic force wave characteristics of double redundant permanent magnet synchronous motor are analyzed by Maxwell's stress method. The electromagnetic force wave characteristics of double redundancy motor under no-load and rated load are calculated by using finite element software and compared with the traditional motor. Finally, the application of heat transfer theory in motor is introduced, the particularity of vacuum temperature field calculation is analyzed, the heat conduction differential equation of motor is deduced, and the boundary conditions of vacuum temperature field calculation are determined. The loss of the motor is calculated by using the two-dimensional finite element software, and the heat source of the motor and the thermal conductivity of each component of the motor are determined. The vacuum temperature field of a double redundancy motor is calculated by Workbench software.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM341

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