摘要
提出了一种超音频感应加热电源的锁相控制技术,利用锁相环的锁相滤波功能,使逆变器具有平稳他激与自激的转换过程;在锁相环中引入延迟环节,不但补偿了控制电路的固有延迟,而且使逆变器具有精确的超前触发时间。
A control technique using phase locked loop(PLL)for ultrasonic induction heating power supply is presented.With the LPF function of PLL,the inverter has a much smoother switching process between external-exciting and self-exciting.The delay loop applied in the PLL not only compensates the inherent delay of the control circuit but also enables the inverter to have an accurate trigger time of lead.
出处
《电源技术应用》
2004年第8期456-458,共3页
Power Supply Technologles and Applications
关键词
电流型逆变器
感应加热
锁相控制
current-mode inverter
induction heating
phase loop lock control
