【作者】 张伟；

【导师】 伍萍辉；

【作者基本信息】 河北工业大学 ， 电路与系统， 2011， 硕士

【摘要】 开关电源是现代电力电子设备中不可或缺的组成部分,而电源的数字化控制是电源的发展趋势。电力电子设备中的数字化控制部分多以MCU/DSP为核心,在很多高频应用的场合,它们的速度往往不能满足要求。与单片机和DSP相比,FPGA的频率更高、速度更快,这些特点顺应了电力电子电路的高频化和复杂化发展的需要。因此, FPGA在电力电子控制电路中得到了日益广泛的发展和应用。本文将FPGA应用于数字化电源控制平台的设计,以实现开关电源的数字化控制,所设计平台可通过串行接口与电脑连接,将驱动输出、监控、远程控制及可视化于一体,在不改变硬件的条件下,只需通过软件修改相关参数,即可实现对各种常用拓扑结构的开关电源的数字化控制。论文主要研究工作有:1.采用模块化设计方法,确定基于FPGA的电源控制器平台总体结构;2.进行SPWM控制系统各分模块设计,包括幅度、频率、相位、采样点数可调的正弦调制波,快速稳定的三角形载波,SPWM分相模块,死区时控模块及保护模块等,并进行总体控制系统(SPWM系统)的仿真;3.进行PWM控制系统各分模块设计,包括锯齿波,电压、电流放大器,软启动模块及PWM分相,保护模块等,并进行总体控制系统(PWM)系统的仿真;4.设计高速数字PID模块及串口通信模块;5.编写可视化界面,使平台能够与计算机通信。所有设计经过仿真结果分析,完成了课题要求,并具有较好的使用价值和应用前景。更多还原

【Abstract】 Switching Power supply is a significant part of the power elcetronics. Digital control of Power has widely application prospect. The performance of the control system depends on the performance of MCU/DSP.Nowadays, they are used as the core in control modules of digital power electronic devices. In many application fields of high frequency, the speed of the controllers which are widely used at present can’t meet the needs. FPGA has higher frequency and faster speed in comparison with MCU and DSP.These advantages conform to the need of power electronic control circuits developing in the direction of high frequency and complication increasingly.So this type of apparatus was developed and applied in more and more fields. In order to realized the digital control of the switch power supply, This platform can be connected with computer by UART, and used to complete monitoring、driver output、remote control and visualization. No change in hardware, it’s flexible to alter parameters and control Switching Power supply. The main research work consists of adjustable sine modulation wave, rapid and stable triangle carrier, separation phase module, dead- time controlled and protection module, the simulation of SPWM system; sawtooth wave, amplifier, soft-starting module and PWM phase separation, protection module were designed and simulated; the design of PID and serial communication modules; furthermore, for the purpose of communication with computer, visualization interface was designed. All the modules designed in this paper have been make detailed description and simulated testing, complete the topic request and have better use value and application prospect.更多还原