基于FPGA的ELM仿真

针对兆瓦级风电并网逆变器主电路研制中存在的并联扩容、开关频率较低和LCL滤波器难以优化设计等问题，提出了采用交流侧串接电感再进行并联的均流方案，采用载波移相技术提高变流器的等效开关频率，提出了LCL滤波器的设计原则，并给出了上述设计的理论依据和实现方法。通过对2兆瓦风电变流器主电路的仿真验证了上述技术方案。(MW-class wind power for grid-inverter main circuit of the parallel development of existing capacity, a lower switching frequency and LCL filter design difficult to optimize the problem, a series inductor AC side in parallel are further flow program, the use of carrier phase-shifting technology to enhance the equivalent converter switching frequency, a LCL filter design principles, and gives the above-mentioned theoretical basis for the design and implementation. 2 MW of wind power converter main circuit simulation program to verify the above-mentioned technology.)

本程序调试了TI的高精度模数转换芯片ADS1115,此模数转换器采用双积分型，16位，为IIC通信方式，调试较复杂，在对直流采集方面有着广泛的应用(This program debugging TI s high-precision analog-digital conversion chip ADS1115)

ISE7.1，采用VIRTEX-II芯片。实现adc数据采样，平均，通道选择，采样时钟选择，数据格式调整，内含fifo,uart等模块。-ISE7.1, using VIRTEX-II chip. Adc realize data sampling, on average, channel selection, the sampling clock select, adjust data formats, including fifo, uart modules.

DDR SDRAM控制器verilog代码及中文说明文档,对DDR开发很有用的哈。-Verilog source code for DDR SDRAM controler design,including guide book in chinese.

用于sopc builder添加组件用的ps/2 键盘 ipcore-Sopc builder used to add components used ps/2 keyboard IPCore

说明：  该模块实现了FPGA的uart串口收发功能(The module realizes UART serial port transceiver function of FPGA)

Verilog 语言写的控制 DAC8568 的模块，DAC8568 是SPI接口。(Verilog language used to write the control module DAC8568, DAC8568 is SPI interface.)

七段LED数码管显示译码器设计，将输入的16位二进制数据分别输出到4个数码管上(Seven-segment LED display decoder design, the input of 16 binary data are output to the four digital tube)

本例程使用vivado2014.4工具，利用xilinx Basys3 实验板实现板载流水灯的两种模式控制。(This project uses verilog HDL to realize the the control of 16 leds loaded on Xilinx Basys3 board.)

说明：  内附几十种小程序，有状态机、比较器、波形发生器、乘法器、加法器、步进电机控制器等，希望大家能用的上。(Containing dozens of small programs, for reference，This is about FPGA,a tool ,we can study,but in ourselves.)