Sunday, January 17, 2010

HW1 pb3 D=?

Referred to fig1 (problem3):

Assuming the converter is lossless:

Pin=Pout=500W, Vin=500W/5A=100V

- Volt second balance: D’=Vin/Vout=100V/400V=0.25; D=0.75

- Charge balance: D’*I=Iout=Pout/Vout=500W/400A=1.25A

D’=Iout/I=1.25A/5A=0.25; D=0.75

 

Is D=0.5?

 

Thank you,

1 comment:

Dragan said...

Good point - thanks. The statement "duty cycle is 0.5" should not have been in the problem. A corrected problem, with this statement deleted, has been posted on the course website.