marcel wrote:

> I am interested to do an project to generate 3 phase ac mains on a ship
> on board there are
> two dc generators dc 220 volts and battery's
> an old tow boat from russia
> siemens makes power bridge's igbt  10 to 50 amps 600 volts
> i saw a design with 80553 pwm to control this bridge
> did any body do research on this which pic could do the job
> the bridge contains rectifier and 6 igbt transistors so one needs 6 pwm
> out puts
>
> Marcel
>
> marbel@xs4all.nl
>
> Amsterdam

  Hi Marcel

Usually it is needed just 3 PWMs , since the  top and  bottom trasistors
of the each leg
of the inverter are controlled in a complementary fashion.

Humberto
humberto@ece.concordia.ca
Montreal