tomelektro
Newbie level 1
Power module isolation.
Hello,
My aim is to make 1xphase supply, 3xphase low power induction motor inverter based on Mitsubishi PS11014 intelligent power module at my Uni. I stuck on very beginning and I have no idea how I should separate high voltage part from user accessible low part voltage to make it “proper way”. If I connect power module ground to cpu ground then if someone tries to connect wrong wired 1phase socket then they will have 230V on lcd screen and potentiometers. Should I isolate cpu, user interface from power module via optoisolators (I have analog signals from power module too) or its better idea to isolate lcd, potentiometer, other input signals to cpu?
Thank you in advance.
Regards
ElektroTom
Hello,
My aim is to make 1xphase supply, 3xphase low power induction motor inverter based on Mitsubishi PS11014 intelligent power module at my Uni. I stuck on very beginning and I have no idea how I should separate high voltage part from user accessible low part voltage to make it “proper way”. If I connect power module ground to cpu ground then if someone tries to connect wrong wired 1phase socket then they will have 230V on lcd screen and potentiometers. Should I isolate cpu, user interface from power module via optoisolators (I have analog signals from power module too) or its better idea to isolate lcd, potentiometer, other input signals to cpu?
Thank you in advance.
Regards
ElektroTom