摘要
为了降低鱼雷电动力系统的传统硬开关变频器工作时对雷体内其他设备的电磁干扰,提出了一种鱼雷电机软开关PWM逆变器,阐述了其结构组成及工作原理,重点讨论了如何把软开关技术和PWM技术结合这一关键问题,提出了谐振匹配的理论。通过分析软开关零电压条件的产生机理,提出为了实现逆变桥上开关管的零电压开通和关断,谐振环节辅助开关的开始工作时刻要提前于主开关信号开通时刻一个时间,即把主开关信号向后平移一个时间。通过实验验证了这一方法的正确性和可行性,其在鱼雷电动力系统应用具有广阔前景。
To reduce the electromagnetic interference (EMI) effect of conventional hard-switching inverter on other internal devices in torpedo's electric power system, we design a soft-switching pulse width modulation (PWM) inverter for torpedo motor, expound the inverter's configuration and working principle, discuss the key problem how to combine soft-switching technology with PWM technology, and hence present a resonant matching theory. By analyzing generating mechanism of soft-switching zero voltage condition ( ZVC), we put forward a method in which the auxiliary switches in resonant link start ahead of the main switches, namely, the main switch signals are shifted backward for a certain time to make the inverter switches under ZVC. Experiment verifies the tightness and feasibility of the method.
出处
《鱼雷技术》
2009年第3期39-42,共4页
Torpedo Technology
基金
国防科技预研资助项目
关键词
电磁干扰
软开关
PWM逆变器
谐振匹配
electromagnetic interference (EMI)
soft-switching
pulse width modulation (PWM) inverter
resonant matching