【作者】 周芹；

【导师】 邓智泉；

【作者基本信息】 南京航空航天大学 ， 电力电子与电力传动， 2010， 硕士

【摘要】 开关磁阻电机作为发电机运行的低成本、高可靠性的优点近来引起广泛的关注。无轴承开关磁阻发电机通过在开关磁阻发电机中应用无轴承技术,既保持了开关磁阻电机的优点,又具有无轴承电机的高速适应性。本文研究的无轴承开关磁阻全周期发电机,结合了无轴承技术和开关磁阻发电机的优良特性,是一种在励磁阶段也能发电的新型开关磁阻发电机。以其数学模型、系统平台设计、控制策略作为研究重点,本文主要做了以下几个方面的工作:首先介绍普通开关磁阻发电机的工作原理,在此基础上分析了无轴承开关磁阻全周期发电机的悬浮原理和全周期发电机理,分析了全周期发电的性能指标和相关的影响因素,推导了数学模型。介绍了无轴承开关磁阻全周期发电机数字控制系统的组成,在此基础上设计了无轴承开关磁阻全周期发电机系统实验平台,包括功率变换器、数字控制电路、模数转换器及采用TI公司的DSP F2812和Altera公司的CPLD EPM1270为核心的控制系统,并用C语言设计了相应的控制程序,为实现无轴承开关磁阻电机全周期发电运行提供了可靠的实验基础。综合普通开关磁阻电机的三种运行方式,针对无轴承开关磁阻全周期发电机的强耦合性,提出了协调控制发电电压和悬浮力的平均励磁电流控制策略。利用MATLAB软件对控制策略搭建系统模型并验证其可行性。最后,在实验样机上进行了发电实验,实现了无轴承开关磁阻全周期发电机的发电运行。更多还原

【Abstract】 As a generator, low cost and high reliability of switched reluctance motor (SRM) attracts worldwide attention in resent years. Bearingless Switched Reluctance Generators (BSRGs), which apply bearingless technology in switched reluctance generaor (SRG), not only maintain characteristic of SRM, but also possess high-speed performance of bearingless motor. The dissertation researches a Bearingless Switched Reluctance Motor (BSRM) in full-period generating mode, which can also be generated in excitation-period has combined the excellent characteristics of SRM and the bearingless technology. The dissertation focuses on mathematical models, designing platform of BSRM and control strategies, and mainly does the following work:Firstly, On the basis of introducing the theory of SRM, the levitation and full-period generating principles and related indexes of BSRM are analyzed. A mathematical model is built.Secondly, the composition of digital signal control system of BSRM is presented. Based on this, power converter, A/D converter, and the digital signal under the key chips of DSP F2812 and CPLD EPM1270 are designed. The control program with C language is compiled which offers the stable experiment conditions.Summarizing three modes of SRM, a control strategy is proposed based on the co-ordination control of power voltage and radical forces. The performance of that strategy is investigated in Matlab/Simulink. At last, experiments are completed on the platform of BSRG, realizing the BSRG in full-period mode.更多还原