【作者】 李建林； 许鸿飞； 武鑫； 潘磊； 赵栋利； 张仲超；

【Author】 Li jianlin Xuhongfei Wuxin Panlei Zhaodongli Zhangzhongchao (Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing,100080 Institute of hydraulic sciences,Taiyuan, 030024; Zhejiang University, Hangzhou, 310027)

【机构】 中科院电工研究所； 山西省水利科学研究所； 浙江大学；

【摘要】 多电平变频器的开关器件数目远大于常规的桥式PWM变频器,而常用的微控制芯片难以提供足够的PWM触发脉冲。适用于多电平变频器的多路PWM发生器可以通过FPGA实现。本文研制了基于DSP和现场可编程门阵列(FPGA)实现的24路PWM脉冲产生器。在单相级联H 桥五电平变频器上进行了实验验证。实验结果表明:所得到的实验波形与自然采样法所得仿真波形的谐波特性很相近。更多还原

【Abstract】 For multi-modular converters and multilevel converters, the number of PWM generators provided by the IC is clear ly not sufficient. In such occasion, a special purpose multiplex PWM generator is essential. Field programmable gate array (FPGA) along with its programming system is a new technique for VLSI. Under the support of FPGA development system software, designers can directly define and modify its logic function according to system demand. Special purpose multiplex PWM generator can be conveniently implemented by FPGA, which is very promising to multi-modular converters and multilevel converters. Experimental result shows the frequency spectrum of experimental wave and nature sample simulated wave are very close.更多还原