PEREE The concept of soft-switching Soft-switching u a)Turning-on b)Turning-off The process of power semiconductor device soft-sWItching
Power E l ect r o n cs i 6 The concept of soft The concept of soft-switching switching Soft-switching switching a) Turning-on b) Turning-off t u i u i t u i u i t p t p O O O O The process of power semiconductor device The process of power semiconductor device soft-switching switching
PEREE Two types of soft-switching ZVs--Zero-voltage switching 4 Specifically means zero-voltage turn-on, i.e,the voltage across the device is reduced to zero before the current increases Zcs-Zero-current switching Specifically means zero-current turn-off, i.e., the current flowing through the device is reduced to zero before the voltage increases 7
Power Electron cs i 7 Two types of soft Two types of soft -switching switching ZVS —Zero -voltage switching voltage switching Specifically means zero Specifically means zero -voltage turn voltage turn -on, i.e., the on, i.e., the voltage across the device is reduced to zero before the voltage across the device is reduced to zero before the current increases current increases ZCS —Zero -current switching current switching Specifically means zero Specifically means zero -current turn current turn -off, i.e., the off, i.e., the current flowing through the device is reduced to zero current flowing through the device is reduced to zero before the voltage increases before the voltage increases