yelstor
Junior Member level 1
Hello
I need to design a pfc with an output of 5kw. The drawback is that I need a 110Vdc output, with an input of 120vrms. Having an output voltage lower than the input voltage, I can not use a boost converter as in the vast majority of cases. I can not use a buck converter either because its thd is higher than 5%. Could you give me some recommendation?
I have thought to raise the voltage to 400vdc with a boost converter, and then rerduce it with a 110vdc with a buck or fullbridge converter, but it could be expensive. I also thought about the possibility of using a sepic, but I have never used this type of converter, and I do not know if it is recommended for the power of 5kw.
One person told me that flyback was also possible, but according to the literature flyback is not recommended for powers greater than 100W. It may be possible to use flyback for a power of 5kw?
Thank you for your recommendations
I need to design a pfc with an output of 5kw. The drawback is that I need a 110Vdc output, with an input of 120vrms. Having an output voltage lower than the input voltage, I can not use a boost converter as in the vast majority of cases. I can not use a buck converter either because its thd is higher than 5%. Could you give me some recommendation?
I have thought to raise the voltage to 400vdc with a boost converter, and then rerduce it with a 110vdc with a buck or fullbridge converter, but it could be expensive. I also thought about the possibility of using a sepic, but I have never used this type of converter, and I do not know if it is recommended for the power of 5kw.
One person told me that flyback was also possible, but according to the literature flyback is not recommended for powers greater than 100W. It may be possible to use flyback for a power of 5kw?
Thank you for your recommendations