Hello,
Im designing microcontroller based (cortex M3) dc to ac inverter based on unipolar PWM switching. The switching frequency used is 20khz and the sinusoidal frequency that I want to produce is 50hz with an amplitude of about 10V. The hardware consists of a microcontroller connected to some driver ( with bootsrap functionality ) that drives the 4 transistors of the full bridge. I have an LC low pass filter at the output of my full bridge transistor circuit. The dc bus voltage is stiff...
Unidentified low frequency components around 50Hz in a dc-ac inverter
Im designing microcontroller based (cortex M3) dc to ac inverter based on unipolar PWM switching. The switching frequency used is 20khz and the sinusoidal frequency that I want to produce is 50hz with an amplitude of about 10V. The hardware consists of a microcontroller connected to some driver ( with bootsrap functionality ) that drives the 4 transistors of the full bridge. I have an LC low pass filter at the output of my full bridge transistor circuit. The dc bus voltage is stiff...
Unidentified low frequency components around 50Hz in a dc-ac inverter