基于FPGA的电力电子硬件在环仿真研究

发布时间：2018-03-15 05:01

本文选题：电力电子　切入点：硬件在环　出处：《青岛科技大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着电力电子技术的发展,在汽车工业、航海、航天工业中,电力电子设备的使用越来越频繁,其控制系统也变得越来越复杂。电力电子系统通常来说都是较为复杂的,其具有非线性、时变的特点,因此对电力电子系统进行设计开发难度较大。通常都需要进行仿真测试试验来辅助产品的设计,这可以有效缩短开发设计周期、降低开发成本并提高产品的可靠性。硬件在环(Hardware in the loop,HIL)仿真被广泛的应用于电力电子系统的开发设计的过程中,如风力发电、太阳能光伏发电、新能源汽车等领域。本文主要针对电力电子硬件在环仿真开展了以下工作:首先,研究了电力系统仿真的国内外研究现状,研究了电力系统实时仿真技术的发展;研究了硬件在环仿真技术的发展和优势,对几种工业界常用的硬件在环仿真平台:Simulink Real-Time系统仿真平台、ADI系统仿真平台、RT-LAB系统仿真平台、dSPACE系统仿真平台、RTDS系统仿真平台进行了详细的介绍。为研究者进行系统设计仿真时选择合适的系统仿真平台提供了一个方便快捷的参考。第二,本文研究了电力电子系统仿真中的常微分方程的数值解法和电路回路方程的构建问题。详细的阐述了几种常微分方程的数值解法并对其数值稳定性进行了分析;并且本文对基于System Generator的现场可编程门阵列(Filed Programmable Gate Array,FPGA)开发方式和工具进行了深入的研究;最后以典型的电力电子Buck电路为例,使用梯形积分法和改进节点法建立其数学仿真模型,并在FPGA中实现其电路数学模型的仿真运算,与SimPowerSystems搭建的器件模型仿真结果进行对比,验证了使用FPGA进行电力电子硬件在环仿真的可行性。第三,本文以目前在直流输电中使用和研究较为广泛的(Modular Multilevel Converter,MMC)拓扑为例,使用戴维宁等效定理和梯形积分法建立了MMC子模块的戴维宁等效数学模型。使用System Generator模块化设计开发工具在FPGA中实现其等效数学模型,分别建立起单个子模块和单相20电平MMC子模块FPGA仿真模型,与SimPowerSystems搭建的物理器件仿真模型分别进行对比,验证了数学模型的正确性。同时,仿真结果验证了使用FPGA进行电力电子硬件在环仿真的可行性。
[Abstract]:With the development of power electronics technology, power electronic equipment is used more and more frequently in automobile industry, navigation industry and aerospace industry, and its control system becomes more and more complex. Because of its nonlinear and time-varying characteristics, it is difficult to design and develop power electronic system. Hardware simulation is widely used in the development and design of power electronic systems, such as wind power generation, solar photovoltaic power generation. The main work of this paper is as follows: firstly, the research status of power system simulation at home and abroad is studied, and the development of power system real-time simulation technology is studied. The development and advantages of hardware in loop simulation technology are studied. This paper gives a detailed introduction to several kinds of hardware-in-the-loop simulation platform:: Simulink Real-Time system simulation platform and RT-lab system simulation platform. Choosing a suitable system simulation platform provides a convenient and quick reference when designing simulation. Second, In this paper, the numerical solution of ordinary differential equation and the construction of circuit loop equation in power electronic system simulation are studied. The numerical solution of several ordinary differential equations and its numerical stability are discussed in detail. In this paper, the development methods and tools of Filed Programmable Gate FPGA (Field Programmable Gate Array) based on System Generator are studied in depth, and the mathematical simulation model is established by trapezoidal integration method and improved node method, taking typical power electronic Buck circuits as an example. The simulation results of the circuit mathematical model in FPGA are compared with the simulation results of the device model built by SimPowerSystems. The feasibility of using FPGA to simulate power electronics hardware in loop is verified. In this paper, we take the MMC topology, which is widely used and studied in HVDC transmission, as an example. The equivalent mathematical model of MMC submodule is established by using Davinen equivalent theorem and trapezoidal integration method. The equivalent mathematical model is realized in FPGA by using System Generator modular design and development tool. A single sub-module and a single-phase 20-level MMC sub-module FPGA simulation model are established, and compared with the physical device simulation model built by SimPowerSystems, the correctness of the mathematical model is verified. The simulation results verify the feasibility of power electronics hardware in loop simulation using FPGA.
【学位授予单位】：青岛科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP391.9;TM743

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