【作者】 侯伟；

【导师】 王辉；

【作者基本信息】 湖南大学 ， 电力电子与电力传动， 2007， 硕士

【摘要】 变频电源具有低损耗和高效率等显著优点,其性能的优劣直接关系到整个系统的安全性和可靠性指标,随着工业上变频电源的广泛应用,对其性能参数的检测也越来越重要,因此对变频电源设备输出电参数进行测量方面的研究具有重要的意义。论文综述了国内外各种交流变频电参数测量系统的研究现状和应用技术,根据变频设备的工作机理和输出特性,提出了系统的总体设计方案。由于变频设备的输出范围广且变化快,并且国内大部分参数测量设备都是针对工频进行设计的,基于此本文采用高速的数字处理器和改进的算法来进行控制实现。论文首先给出了各电参数测量的国际标准和理论基础,重点分析了如何通过希尔波特变换来实现频率的测量。为了滤除不需要的高次谐波并精确的测量频率,建立了FIR滤波器模型,通过MATLAB编程进行了数字仿真,验证了算法的正确性;利用周期法进行了其它电参数的测量实现,并在Labview中进行了仿真,作为辅助分析软件具有快速直观的特点并有很大的通用性。在理论分析和仿真的基础上,论文设计了基于TMS320F2812 DSP的控制系统,并结合原理图介绍了各模块运行原理;重点分析了如何利用CPLD来实现时序控制的功能,并给出了VHDL设计的程序和仿真结果。最后进行软件程序上的设计,对各部分进行了程序分析和设计,各模块结构相互关联,具有很好的扩展性和移植性。更多还原

【Abstract】 The variable frequency converter has the advantages of low cost, hige efficient and matters the safety and reliability index of the whole system. With the widly use of it in the industry automatic area, the measurement of the parameters of it is more and more important. So it becomes significant to make research on measuring them.After surveying and studying the domestic and international research’s current situation and application technology, and based on the working principle and output character, we advance the overall design scheme. As the output range of the variable frequency equipment is wide and changing fast, and most of the electrical parameter measuring devices is designed in view of the industry frequency, so we adopt the high speed DSP and some algorithm to improve it.First, we provide the international standard of electrical parameter measuring as the basis of the theory, then centre on analyzing how to measure the frequency with the Hilbert conversion. In order to filter the harmonic, precisely measure the frequency and check the correctness of the algorithm, we build the FIR filter model and simulate it in Matlab. Then we use Labview to measure other parameters on PC which has fast and ocular character as analyzing software.On the foundation of analyzing the theory and simulation, we designed the control system with TMS320F2812. With the scheme we introduced the working principle,then we put emphasis on the cpld time order control and gave the VHDL design procedure and simulation result. In the end, we designed the software and analyzed the procedure of each part which have mutual relation of each model and have good extension and transplant charatoristics.更多还原