本文關鍵詞： 永磁容錯起動發(fā)電機 恒轉矩 弱磁控制 容錯控制 模擬平臺　出處：《南京航空航天大學》2016年碩士論文　論文類型：學位論文

【摘要】：近年來,多電及全電飛機發(fā)展迅速,使得航空電源系統(tǒng)在功率水平、電能品質及可靠性等方面的要求越來越高,內置式整體起動發(fā)電系統(tǒng)則日益成為多電航空系統(tǒng)中的研究熱點。起動發(fā)電系統(tǒng)是基于電機的可逆工作原理,電機在電動運行時作為發(fā)動機的起動機,在發(fā)電運行時作為發(fā)動機的負載,給其他電氣類負載提供電源。永磁容錯電機兼?zhèn)涓吖β拭芏燃案呖煽啃缘奶攸c,是內置式起動發(fā)電機的有力競爭者。本文介紹了內置式永磁容錯電機起動發(fā)電系統(tǒng)的整體結構,并根據永磁容錯電機本體的特性建立了其數學模型;針對航空發(fā)動機的起動轉矩特性,給出了電動運行時的恒轉矩起動方案;利用電機大電感的特點,在分析了發(fā)電控制原理的基礎上,提出了直軸電流(Id)解析法弱磁控制以實現寬轉速范圍內的弱磁恒壓發(fā)電;基于電機磁隔離的特點和三相四橋臂的電路拓撲,以保證故障后的電機定子磁場為幅值不變的圓形旋轉磁場為目的,結合SVPWM算法提出了單相故障后利用第四橋臂補償的容錯控制策略。在理論分析的基礎之上,利用仿真分析軟件MATLAB建立了永磁容錯電機起動發(fā)電系統(tǒng)的仿真模型,對各控制算法進行仿真分析及驗證。本文設計并搭建了內置式永磁容錯電機起動發(fā)電系統(tǒng)的模擬實驗平臺。該實驗平臺的硬件主要包含控制電路及主功率電路兩個部分。控制電路的核心芯片采用TI公司的數字信號處理器TMS320F2812,主功率電路的功率器件采用三菱公司的IPM模塊。系統(tǒng)軟件算法設計采用C語言,主要編寫了恒轉矩起動程序段、弱磁發(fā)電控制算法程序段、容錯控制算法程序段等。在軟硬件兼具的基礎上,對永磁容錯電機起動發(fā)電系統(tǒng)進行軟硬件聯調。實驗結果與仿真結果及理論分析相符,驗證了系統(tǒng)控制策略的有效性。
[Abstract]:In recent years, with the rapid development of multi-electric and all-electric aircraft, the requirements of aeronautical power system in power level, power quality and reliability are becoming higher and higher. The built-in integral starting power generation system is increasingly becoming a research hotspot in multi-electric aeronautical systems. The starting power generation system is based on the reversible working principle of the motor, and the motor is used as the starting motor of the engine when it is in electric operation. As the load of engine during the operation of power generation, it provides power to other kinds of electrical load. Permanent magnet fault-tolerant motor has the characteristics of high power density and high reliability. This paper introduces the whole structure of starting generation system of built-in permanent magnet fault-tolerant motor and establishes its mathematical model according to the characteristics of permanent magnet fault-tolerant motor. According to the starting torque characteristic of aero-engine, the starting scheme of constant torque is given, and the principle of power generation control is analyzed based on the characteristics of large inductance of motor. Based on the characteristics of magnetic isolation of motor and the circuit topology of three-phase four-bridge arm, an analytical method of weak magnetic field control is proposed to realize the constant voltage generation of weak magnetic field in the wide speed range, which is based on the characteristics of magnetic isolation of the motor and the circuit topology of the three-phase four-arm. In order to ensure the circular rotating magnetic field with constant amplitude of stator magnetic field after fault, a fault-tolerant control strategy with 4th leg compensation after single-phase fault is proposed in combination with SVPWM algorithm. Based on the theoretical analysis, a fault tolerant control strategy is proposed. The simulation model of starting generation system of permanent magnet fault-tolerant motor is established by using simulation analysis software MATLAB. This paper designs and builds a simulation experiment platform for the built-in permanent magnet fault-tolerant motor starting generation system. The hardware of the platform mainly consists of control circuit and main power circuit. The core chip of the control circuit is TMS320F2812, and the power device of the main power circuit is the IPM module of Mitsubishi Company. The software algorithm of the system is designed with C language. The program segments of constant torque starting program, weak magnetic generation control algorithm, fault-tolerant control algorithm and so on are mainly compiled. On the basis of both hardware and software, The hardware and software combination of PMSM starting generation system is carried out. The experimental results are in agreement with the simulation results and theoretical analysis, and the effectiveness of the control strategy is verified.
【學位授予單位】：南京航空航天大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：V242

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