Improved GTR´s quasi-resonant DC link inverter

A type of improved GTR quasiresonant DC link inverter is discussed. In the inverter, the active clamping circuit is removed and the DC link voltage can be limited to 1.1 Ed-1.2 Ed. The improved inverter still has the characteristic of being insensitive to the load. In the inverter circuit, it can be ensured in some range that the DC link voltage is zero at random, ensuring overcurrent and overvoltage protection safely and efficiently. This also raises the current utilization ratio of the power switch