【摘要】 根据新型中大功率级联型多电平拓扑特点,设计了以双向全桥变换器单元为控制对象,FPGA为控制核心的单元电路控制器。其移相PWM驱动信号采用有限状态机方式实现;PI控制器采用离散算法结构,利用LUT设计;A/D控制器采用AD7823 A/D转换器,并通过DSP传送相关控制参数。仿真实验表明:该控制器可实现单元电路闭环控制,输出电压为7电平。该研究为高压大功率四象限变频器实验奠定了基础。更多还原

【Abstract】 This paper describes the design of unit circuit controller marked by bi-directional full-bridge converter unit used as control object and FPGA as control core,according to the new high power in the cascade type level topological characteristics.The steps consist of obtaining the PWM signal phase shifting driven by finite state machine way,accomplishing PI controller using discrete algorithm structure of LUT design;achieving A/D controller by AD7823 the A/D converter,and realizing transference of related control parameters through the DSP.Simulation results show that the controller can achieve unit closed-loop control circuit and the output voltage for 7 level.The study lays a foundation for high pressure high-power inverter four quadrant experiment.更多还原