【作者】 李思；

【导师】 周美兰；

【作者基本信息】 哈尔滨理工大学 ， 电力电子与电力传动， 2011， 硕士

【摘要】 电力电子设备的控制技术随着电力电子技术的发展而迅猛发展。开关电源是电力电子设备的重要组成部分,其功能的好坏直接影响着整个设备的性能。随着数字信息技术的不断发展,对电源控制器的研究开始从模拟时代步入数字时代。近年来,FPGA(Field Programmable Gate Array,现场可编程逻辑门阵列)凭借其高速率、稳定性强、修改灵活、开发周期短等优点引起了数字控制领域的广泛关注。FPGA的各项优点也决定了其必将成为今后电力电子控制技术领域的主力军。论文研究了一种基于FPGA的高频高精度数字开关电源控制器。首先以Buck变换器为主电路模型,对其进行了理论分析及数学建模;然后,在其基础上提出了新型数字控制器方案,并加以分析和设计;与此同时,建立了Buck电路的仿真模型,并对设计的数字控制器进行了系统的仿真研究,得到了令人满意的仿真结果。论文着重论述了数字开关电源控制器的实现,其中,重点研究了数字补偿器和DPWM(Digital Pulse Width Modulation,数字脉宽调制器)的实现。论文设计了一种基于FPGA实现的数字开关电源控制器方案。采用Verilog HDL语言,在Quartus II软件下完成设计及仿真验证。并在此基础上,以Altera公司生产的Cyclone系列芯片EP1C6Q240C8为主控芯片,构建试验平台,通过实验验证了理论研究及控制算法的正确性和可行性。作者采用较低的输入频率实现了10位分辨率的高精度DPWM,完成了DPWM IP核的构建并用其搭建了基于SOPC(System On a Programmable Chip,可编程片上系统)的DPWM系统。最终使控制器频率达到预定的开关频率1MHz,实现了高频高精度的设计目标。更多还原

【Abstract】 Control of power electronic equipment, power electronics technology is with the development of rapid development. Switching power is an important part of the power electronic devices, and their functions have a direct impact on the performance of the entire device. With the continuous development of digital information technology, research on the power controller begin to transform from the analog era into the digital age. In recent years, Field Programmable Gate Array, with its high speeding, stability, modify the flexibility, the advantages of short development cycle, caused widespread concern in the field of digital control. The advantages of FPGA also determine the future of their power will become the main force in the field of electronic control technology.A FPGA-based high frequency and high precision digital switching power supply controller is researched in the dissertation. First, the main circuit model of the Buck converter, is made theoretical analysis and mathematical modeling; and then, a new digital control scheme is proposed and analyzed and design; At the same time, the establishment of a Buck circuit simulation model, and the design of digital controller of the system simulation, and the simulation results are satisfactory. The implementation of digital switching power supply controller is dissertated in the dissertation, which focuses on the digital compensator and Digital Pulse Width Modulator implementation.Implementation of digital switching power supply controller program based on FPGA is designed in the dissertation. Verilog HDL language is used in the Quartus II software to complete design and simulation. And on this basis, the chip EP1C6Q240C8 of the Cyclone series which produced by Altera is the main chip, and test platform has been build, and through theoretical studies and experimental verification of the correctness and feasibility of control algorithms. Input frequency of a lower resolution to achieve a high precision 10-bit DPWM, and the building of DPWM IP core and a system based on SOPC the DPWM have been completed. Ultimately achieve the desired frequency of the controller switching frequency of 1MHz, and it has got the goal of high frequency and high precision.更多还原