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

【摘要】：為了提高航天作動系統(tǒng)的運行可靠性,本文將余度技術與電機相結合,提出了雙余度永磁同步電機。雙余度永磁同步電機既具有永磁同步電機調速范圍寬、動態(tài)響應快以及功率密度高的優(yōu)點,同時又能提高電機系統(tǒng)的安全性和可靠性。成為越來越多學者的研究對象。本文以一臺20極24槽永磁同步電機為研究對象,先分析傳統(tǒng)永磁同步電機的運行性能。在傳統(tǒng)電機模型的基礎上,對電機重新分相,得到幾種不同結構的雙余度永磁同步電機。對這幾種雙余度永磁同步電機進行分析計算,與傳統(tǒng)電機進行對比,并將幾種雙余度電機的性能也進行對比分析。論文首先分析了雙余度永磁同步電機的運行原理和運行模式,介紹了雙余度永磁同步電機的結構和特點,建立了ABC三相坐標系下以及dq0坐標系下的數(shù)學模型。對不同結構的雙余度永磁同步電機進行電感的解析推導,為后面的仿真分析提供理論參考。其次,建立了傳統(tǒng)電機和幾種不同結構的雙余度電機模型,并利用有限元軟件進行仿真分析。對比了雙余度電機與傳統(tǒng)電機的空載特性,在空載特性保持基本相等的前提下,進行其他性能的對比分析。從電機電感角度,重點分析了雙余度電機的交叉耦合特性。并仿真計算了交叉耦合特性對電機電磁轉矩波動特性的影響。再次,利用磁勢乘磁導法解析推導了雙余度永磁同步電機的氣隙磁密,利用麥克斯韋應力法分析了雙余度永磁同步電機的電磁力波特性。利用有限元軟件計算了雙余度電機在空載以及額定負載情況下的電磁力波特性,并與傳統(tǒng)電機進行對比分析。最后,介紹了傳熱學在電機中的應用,分析了真空溫度場計算的特殊性,推導了電機的熱傳導微分方程,并確定了真空溫度場計算的邊界條件。利用二維有限元軟件計算了電機的各種損耗,確定了電機的熱源及電機各部件的導熱系數(shù)。利用Workbench軟件對一種雙余度電機進行真空溫度場的計算。
[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.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM341

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本文編號：1835321