【摘要】 传统两电平全桥磁悬浮斩波控制器结构简单、控制方便,但其工作电压不能太大且静态纹波较大。在此介绍一种不对称三电平悬浮斩波器。基于多电平理念,控制斩波器工作模式。理论分析表明,系统可控。通过脉冲生成器和脉冲分配器输出脉宽调制(PWM)波,实现三电平控制。仿真和实验表明,当输入两倍传统悬浮斩波器的直流电压时,该拓扑可保证相同纹波并实现更快的响应速度。更多还原

【Abstract】 The traditional two-level full-bridge magnetic suspension chopper has simple structure and convenient application,but its working voltage cannot be too large as well as the static ripple is large.An asymmetric three-level suspended chopper based on multi-level concept is introduced.Theoretical analysis shows that the system is controllable.The system outputs pulse width modulation(PWM) wave through pulse generator and pulse divider to realize threelevel control.Simulation and experiment show that when the direct current voltage is input twice as the traditional suspended chopper,the topology can guarantee the same ripple and realize faster response speed.更多还原