PEREE Disadvantages of higher switching frequency Disadvantages 4 Higher power losses on power semiconductor devices Power loss=f x Energy loss at each switching More severe electromagnetic interference(EMD) Steeper edges introduce more noises Easier to be radiated Solution 4 Soft-switching techniques 3Power Electron cs i 3 Disadvantages of higher switching frequency Disadvantages of higher switching frequency Disadvantages Disadvantages Higher power losses on power semiconductor devices Higher power losses on power semiconductor devices – Power loss= Power loss=f x Energy loss a f x Energy loss a t each switching each switching More severe electromagnetic interference (EMI) More severe electromagnetic interference (EMI) – Steeper edges introduce more noises Steeper edges introduce more noises – Easier to be radiated er to be radiated Solution Solution Soft -switching techniques switching techniques