储能逆变器测试软件平台设计与实现

发布时间：2019-04-10 19:01

【摘要】：能源危机是当代社会发展面临的主要问题之一,日趋严重的能源危机和环境危机,迫切需要我们加快对新能源产业发展,同时新能源也属于环境友好型资源,符合可持续发展的时代特征。因此对储能逆变器等该类分布式发电设备进行大量的投资研发意义重大。为加快储能逆变器的研发进程,保证设备输出电能的质量,系统的测试和调试平台就显得更加的重要。虽然传统的软件调试平台能够基本满足测试要求,但随着新能源电力电子设备的多样化,控制程序算法的复杂化,需要测试平台能获取更多的数据,对数据的传输速率要求也越来越快,同时要求测试系统具有谐波分析、效率分析、程序中间变量监测和历史数据保存等更多实用的功能。因此本文针对现在测试软件平台的不足,为储能逆变器设备研究开发了新的测试软件。首先,本文对储能逆变器的整体结构和控制结构及拓扑作了详细的介绍。分析了储能逆变器的控制流程后,给出了储能逆变器的测试需求,引出了设计储能逆变器测试软件平台的必要性和重要意义。根据储能逆变器测试系统的结构特点和测试需求,设计储能逆变器测试软件平台实现方案,并和储能逆变器本身的控制系统进行无缝结合,构建一个功能完整的测试软件平台。然后,对基于频域的快速离散傅立叶变换中的基2 FFT算法进行讨论研究,通过加窗减少了频谱泄漏和栅栏效应的影响,提高了计算精度。针对FFT算法运算量大的问题,分析了两种减少运算量的措施,进一步提高了测试软件平台的对谐波检测的实时性。研究使用了三相交流瞬时功率的计算方法,给出了测试软件平台中对储能逆变器的效率计算方法。为保证通信速率研究并使用基于UDP/IP的协议,设计储能逆变器测试软件平台的通信协议。最后,在理论研究的基础上,针对储能逆变器测试软件平台的实现过程进行了探讨分析。先从总体上给出了储能逆变器测试软件平台的架构,然后对功能模块进行划分,接着对各个功能模块作简要分析后,给出了各功能模块的实现方法,对各个功能模块给出了相应的结构框图或软件流程图。储能逆变器测试软件平台设计完成后,对平台的各模块进行了单模块功能测试分析。最后,给出了储能逆变器测试软件平台与储能逆变器进行了现场联机调试的情况,验证了该测试软件平台的设计方案可行。
[Abstract]:Energy crisis is one of the main problems facing contemporary social development. With the increasingly serious energy crisis and environmental crisis, it is urgent for us to accelerate the development of new energy industry. At the same time, new energy is also an environment-friendly resource. In line with the characteristics of the era of sustainable development. Therefore, it is of great significance to invest a lot in the research and development of this kind of distributed power generation equipment, such as energy storage inverter. In order to speed up the research and development of energy storage inverter and ensure the output power quality of the equipment, the testing and debugging platform of the system becomes more and more important. Although the traditional software debugging platform can basically meet the test requirements, with the diversification of the new energy power electronic equipment and the complexity of the control program algorithm, the test platform is required to obtain more data. At the same time, the test system is required to have more and more practical functions such as harmonic analysis, efficiency analysis, program intermediate variable monitoring and historical data preservation. Therefore, aiming at the deficiency of current testing software platform, this paper develops a new testing software for energy storage inverter equipment research. Firstly, the whole structure and control structure and topology of energy storage inverter are introduced in detail. After analyzing the control flow of the energy storage inverter, the test requirements of the energy storage inverter are given, and the necessity and significance of designing the test software platform for the energy storage inverter are presented. According to the structural characteristics and test requirements of the test system for energy storage inverter, a software platform for energy storage inverter test is designed, which is seamlessly combined with the control system of energy storage inverter to construct a test software platform with complete function. Then, the fundamental 2-FFT algorithm in fast discrete Fourier transform (FFT) based on frequency domain is discussed and studied. By windowing, the influence of spectrum leakage and fence effect is reduced, and the calculation precision is improved. In order to solve the problem of large computational complexity of FFT algorithm, this paper analyzes two measures to reduce the computational complexity, and further improves the real-time performance of the testing software platform for harmonic detection. The calculation method of three-phase AC instantaneous power is studied, and the efficiency calculation method of energy storage inverter in the test software platform is given. In order to guarantee the communication rate and use the protocol based on UDP/IP, the communication protocol of the test software platform of energy storage inverter is designed. Finally, on the basis of theoretical research, the realization process of the test software platform for energy storage inverter is discussed and analyzed. Firstly, the architecture of the testing software platform for energy storage inverter is given, then the functional modules are divided, and then the implementation methods of each functional module are given after a brief analysis of each functional module. The corresponding structure block diagram or software flowchart is given for each function module. After the design of the test software platform for energy storage inverter is completed, the single module function test analysis of each module of the platform is carried out. Finally, the test software platform of energy storage inverter and the on-site debugging of energy storage inverter are given, and the feasibility of the design scheme of the test software platform is verified.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP311.52;TM464

【参考文献】