CAJ | 학술논문

随着多电飞机、全电飞机的高速发展,三级式航空无刷同步电机因兼顾高功率密度及功率因数可调等优势得到广泛应用.由于三级式电机中主发电机的凸极特性,转子磁场位置的变化会影响定子铁芯的饱和程度,从而造成定子电感值的变化.该文分析了三级电机饱和状态下电感值的变化规律,并在此基础上利用主发电机的凸极特性,采用脉冲式电压注入法进行转子位置的检测.在实际应用中,三级式电机在起动时采用单相交流励磁方式产生励磁电流,导致主发电机励磁电流产生较大脉动,该脉动信号的干扰使传统的定位方法难以准确估计出转子初始位置.该文通过对励磁机输出特性的分析,建立集励磁机和主发电机的一体化数学模型,提出采用傅里叶算法对响应电流数据进行分析,以获取转子初始位置的方法.实验结果表明,该文方法能够有效消除励磁机脉动干扰,实现转子位置的精确定位,同时该文算法计算量较低,易于在嵌入式系统中实现.
수착다전비궤、전전비궤적고속발전,삼급식항공무쇄동보전궤인겸고고공솔밀도급공솔인수가조등우세득도엄범응용.유우삼급식전궤중주발전궤적철겁특성,전자자장위치적변화회영향정자철심적포화정도,종이조성정자전감치적변화.해문분석료삼급전궤포화상태하전감치적변화규률,병재차기출상이용주발전궤적철겁특성,채용맥충식전압주입법진행전자위치적검측.재실제응용중,삼급식전궤재기동시채용단상교류려자방식산생려자전류,도치주발전궤려자전유산생교대맥동,해맥동신호적간우사전통적정위방법난이준학고계출전자초시위치.해문통과대려자궤수출특성적분석,건립집려자궤화주발전궤적일체화수학모형,제출채용부리협산법대향응전류수거진행분석,이획취전자초시위치적방법.실험결과표명,해문방법능구유효소제려자궤맥동간우,실현전자위치적정학정위,동시해문산법계산량교저,역우재감입식계통중실현.
Along with the fast development of more electric aircrafts (MEA) and all electric aircrafts (AEA), the three-stage aviation brushless synchronous machines are widely used, which adopt the brushless structure and combine the merits of high power density and adjustable magnetic fields at the same time. According to saliency of the main generator of three-stage brushless synchronous machines, the information of rotor position is implied in performances of stator inductances due to the magnetic saturation effect. This paper studied the variation of inductances then estimated the initial rotor position of main generators by injecting modulated pulse voltage vectors. The three-stage aviation brushless synchronous machines are excited by single-phase AC during the starting period. The excitation current of the main generator contains severe pulsating components, thus the traditional methods can not accurately locate the initial position angle of the rotor. An initial rotor position estimation method in which Fourier analysis method was adopted to analysis the response currents was proposed, based on the analyze of the output characteristics of the exciter and the research of the integration model considering the exciter and the main generator in the starting period. The experimental results show that the proposed method can exclude the pulsation of exciter currents, therefore an initial rotor position angle is gained more reliably and efficiently.