中文摘要：

在研究了三电平全桥变流器工作原理和载波移相原理的基础上,设计生成了基于数字信号处理器（DSP）和现场可编程门阵列（FPGA）的载波移相PWM脉冲,用于驱动变流器工作。重点介绍了由DSP和FPGA生成载波移相PWM脉冲的基本原理、系统构成及实现方法,其核心思想是FPGA通过数据地址总线接收DSP输出的移相角与FPGA内部生成的三角波进行二逻辑比较,从而产生移相角可变的PWM脉冲,以满足变流器全工况范围实时控制的需要。通过优化设计,使DSP和FPGA各自的优势得以有效利用。仿真分析表明：该方法计算速度快、控制精度高,同时具有扩展性好、可靠性高等优点。实验结果与仿真结果吻合,验证了该方法的上述优点。

英文摘要：

Based on DSP and FPGA,a carrier phase-shift PWM generator is designed for driving a three-level full-bridge converter according to the operating principle of the three-level full-bridge converter and the principle of carrier phase-shift PWM.The description focuses on the basic principle,system configuration and operation of the proposed generator.The core idea is that FPGA receives the carrier shift phase from an external DSP through the data and address bus and then compares it with the triangular waves generated in FPGA logically so as to produce phase-adjustable PWM waveforms to meet the real-time control need of the proposed converter in all conditions.Through optimizing the design,advantages of DSP and FPGA are effectively used.This method has advantages of fast calculating speed,high control precision,strong expansibility and high reliability.Experiments and simulations prove the method to be feasible and effective.