全电飞机电力系统谐波电流补偿方法的研究
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摘要
作为飞机设计制造的未来发展方向,全电飞机已成为各国航空界研究重点。全电化的推广提高了飞机电源的效率,改善飞机的可靠性、维修性、保障性,有效地提升飞机的综合性能。但是各种电工领域新技术的应用将大量的谐波电流引入全电飞机电力系统,严重影响全电飞机的经济性与安全性。针对这一实际情况,结合全电飞机电力系统的运行特点与陆地电网谐波补偿的最新成果,论文研究一种新型的动态谐波补偿方法,研究该方法技术实现的几个关键技术,为其实用化奠定了较好的基础。
本文介绍全电飞机电力系统的构成和特点,系统地分析其谐波电流的产生及危害,研究传统补偿方法,指出传统方法的缺点与不足,应用有源电力滤波器对全电飞机电力系统谐波电流进行补偿,并对有源电力滤波器的研究现状、发展趋势以及在全电飞机上的应用进行了介绍。
介绍有源电力滤波器的分类,指出并联型谐波补偿有源电力滤波器的补偿作用可适用于全电飞机非线性负载谐波电流的补偿,在全面详细地分析并联型有源电力滤波器基本构成与工作原理的基础上,建立并联型有源电力滤波器的数学模型。
在运用并联有源电力滤波器对全电飞机电力系统谐波电流补偿时,首先需要明确补偿的目标,以便有目的地、有针对性地进行控制和补偿。文中首先介绍几种常见的谐波电流检测方法,结合全电飞机的技术要求与运行工况,将自适应谐波电流检测法引入到全电飞机谐波电流检测中,全面论述基于噪声对消原理的自适应谐波电流检测技术,以及在并联型有源电力滤波器中的应用。针对固定步长自适应检测法的不足,采用一种变步长自适应谐波电流检测方法。该方法根据负载电流的变化动态地调整步长,兼顾了检测的响应速度与检测精度。通过计算机仿真,得到很好的仿真结果。
本文分析总结常用的有源电力滤波器控制方法,并在此基础上采用单周控制法实现补偿电流的产生,通过理论分析,建立单周控制模型。并进行仿真分析,仿真结果验证了理论分析的正确性和可行性。
文中通过对采用单周控制的有源电力滤波器的工作过程研究和分析,给出各参数的计算公式以及选取标准。
在前几章所做工作基础上,设计一台容量为15KVA的并联有源电力滤波器实验样机,该样机根据全电飞机电力系统的特点将检测、控制与管理分由DSP与ADμC812完成,有效地提高补偿与管理的效率,实验结果表明该方案能够快速准确地检测出谐波电流并对之进行补偿。
All Electirc Aircraft, as a direction of future-deciding aircraft design, has been on the top list of aviation development among nations. The popularization of All Electrics enhanced the efficiency of aircraft power supply, improved its reliability, maintainability and supportability, which all contribute to the comprehensive performance of airplane. But the application of various kinds of new electrical technology generating a wealth of harmonic current greatly harms the economy and security of All Electric Aircraft. Aiming to the real situation, the thesis, integrating the running feature of All Electirc Aircraft power system and the latest accomplishment of curbing land power network harmonics, studies a new dynamic method of harmonics compensation directing to a few key techniques, laying a good foundation for its feasibility.
The paper introduces the structure and feature of the All Electirc Aircraft power system, analyzing systematically the cause and harm of its harmonic current, researching the traditional treatment, meanwhile pointing out the shortcome and deficiency of the traditional ones, proposing the employment of active power filter(APF) compensating the power system of All Electirc Aircraft harmonic current, presenting fully the current research situation, developing trendency of active power filter and its availability.
Introduced the sorts of APF, pointing out the function of shunt harmonic compensation APF can adapt to all electric aircraft nonlinear load current restraint, on the basis of completely and detailedly analyzing shunt APF basic composing and working principle, to found shunt APF mathematical model.
When exercising shunt active power filter making all electric aircraft power system compensated, firstly need definitude the compensation aim so as to control and compensate with purpose and contraposition. The text firslt introduced some familiar harmonic current detecting methods, combined all electric aircraft tochnology requests and running condition, imported adaptive harmonic current detecting methods to all electric aircraft harmonic current detecting, roundly discussed noise cancellation principle adaptive harmonic current detecting technology, and its used in shunt active power filter. Contraposed to the deficiency of fixation adaptive detecting methods, putting forward the way of changing adaptive harmonic current detecting methods. This method to adjust step size bases of load current diversification dynamic, giving attention to detecting response speed and detection precision. Via computer simulation, obtaining the good simulation effect.
This text analyzes and summarizes the active power filter controlled methods, meanwhile, bring forward using one cycle control to achieve comettpensation current control, getting across principle analysis to found one cycle control(OCC) model, and processing simulation analysis. Simulation outcome validates the accuracy and possibility of principle analysis.
Through working process research and analysis by adopting one cycle control on APF, the article presents every parameters calculation formula and its selection criteria.
Based on the design and analysis of the previous chapters, setting up a shunt active power filter experimental prototype with capacity of 15KVA, this prototype according as the characteristic of all electric aircraft has detecting, control and management seperated to DSP&ADμC812 to accomplish, which effectively improved the compensation efficiency, the experiment result proves that this scheme can fleetly and exactly detect harmonic current and have it compensated.
本文介绍全电飞机电力系统的构成和特点,系统地分析其谐波电流的产生及危害,研究传统补偿方法,指出传统方法的缺点与不足,应用有源电力滤波器对全电飞机电力系统谐波电流进行补偿,并对有源电力滤波器的研究现状、发展趋势以及在全电飞机上的应用进行了介绍。
介绍有源电力滤波器的分类,指出并联型谐波补偿有源电力滤波器的补偿作用可适用于全电飞机非线性负载谐波电流的补偿,在全面详细地分析并联型有源电力滤波器基本构成与工作原理的基础上,建立并联型有源电力滤波器的数学模型。
在运用并联有源电力滤波器对全电飞机电力系统谐波电流补偿时,首先需要明确补偿的目标,以便有目的地、有针对性地进行控制和补偿。文中首先介绍几种常见的谐波电流检测方法,结合全电飞机的技术要求与运行工况,将自适应谐波电流检测法引入到全电飞机谐波电流检测中,全面论述基于噪声对消原理的自适应谐波电流检测技术,以及在并联型有源电力滤波器中的应用。针对固定步长自适应检测法的不足,采用一种变步长自适应谐波电流检测方法。该方法根据负载电流的变化动态地调整步长,兼顾了检测的响应速度与检测精度。通过计算机仿真,得到很好的仿真结果。
本文分析总结常用的有源电力滤波器控制方法,并在此基础上采用单周控制法实现补偿电流的产生,通过理论分析,建立单周控制模型。并进行仿真分析,仿真结果验证了理论分析的正确性和可行性。
文中通过对采用单周控制的有源电力滤波器的工作过程研究和分析,给出各参数的计算公式以及选取标准。
在前几章所做工作基础上,设计一台容量为15KVA的并联有源电力滤波器实验样机,该样机根据全电飞机电力系统的特点将检测、控制与管理分由DSP与ADμC812完成,有效地提高补偿与管理的效率,实验结果表明该方案能够快速准确地检测出谐波电流并对之进行补偿。
All Electirc Aircraft, as a direction of future-deciding aircraft design, has been on the top list of aviation development among nations. The popularization of All Electrics enhanced the efficiency of aircraft power supply, improved its reliability, maintainability and supportability, which all contribute to the comprehensive performance of airplane. But the application of various kinds of new electrical technology generating a wealth of harmonic current greatly harms the economy and security of All Electric Aircraft. Aiming to the real situation, the thesis, integrating the running feature of All Electirc Aircraft power system and the latest accomplishment of curbing land power network harmonics, studies a new dynamic method of harmonics compensation directing to a few key techniques, laying a good foundation for its feasibility.
The paper introduces the structure and feature of the All Electirc Aircraft power system, analyzing systematically the cause and harm of its harmonic current, researching the traditional treatment, meanwhile pointing out the shortcome and deficiency of the traditional ones, proposing the employment of active power filter(APF) compensating the power system of All Electirc Aircraft harmonic current, presenting fully the current research situation, developing trendency of active power filter and its availability.
Introduced the sorts of APF, pointing out the function of shunt harmonic compensation APF can adapt to all electric aircraft nonlinear load current restraint, on the basis of completely and detailedly analyzing shunt APF basic composing and working principle, to found shunt APF mathematical model.
When exercising shunt active power filter making all electric aircraft power system compensated, firstly need definitude the compensation aim so as to control and compensate with purpose and contraposition. The text firslt introduced some familiar harmonic current detecting methods, combined all electric aircraft tochnology requests and running condition, imported adaptive harmonic current detecting methods to all electric aircraft harmonic current detecting, roundly discussed noise cancellation principle adaptive harmonic current detecting technology, and its used in shunt active power filter. Contraposed to the deficiency of fixation adaptive detecting methods, putting forward the way of changing adaptive harmonic current detecting methods. This method to adjust step size bases of load current diversification dynamic, giving attention to detecting response speed and detection precision. Via computer simulation, obtaining the good simulation effect.
This text analyzes and summarizes the active power filter controlled methods, meanwhile, bring forward using one cycle control to achieve comettpensation current control, getting across principle analysis to found one cycle control(OCC) model, and processing simulation analysis. Simulation outcome validates the accuracy and possibility of principle analysis.
Through working process research and analysis by adopting one cycle control on APF, the article presents every parameters calculation formula and its selection criteria.
Based on the design and analysis of the previous chapters, setting up a shunt active power filter experimental prototype with capacity of 15KVA, this prototype according as the characteristic of all electric aircraft has detecting, control and management seperated to DSP&ADμC812 to accomplish, which effectively improved the compensation efficiency, the experiment result proves that this scheme can fleetly and exactly detect harmonic current and have it compensated.
引文
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