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My Adventures with Designing A Full Sine PWM Inverter | 24 comments (24 topical)

Re: 120vdc input 5 to 100 kw inverter (none / 0) (#19)
by John II on Mon Mar 29, 2004 at 06:38:45 PM MST

Ibedonc : When You say " + - 80vdc to get 120ac " Are you talking a split rail votage here ?( a positive reference to ground and a negative reference to the same ground of 80vdc each ? )

Idealy I need an inverter that can operate on an input of between 105vdc and 160vdc. I guess this would be the normal operational levels between a 120v bank of standard deep cycle lead acid batteries ?

I have printed off all of your work that you have published... as soon as I get the time, I'm going to print off the chip specs as well. I have to say... right now I don't understand exactly what's going on within the circuit you have :( But I hope too soon : ) It sounds so promising, yet alot more simple then a CPU based setup.

Do you belive your circuitry would be adaptable to my situation where I need aprx. 105vdc to 160vdc input and 120vac output ? would your circuit drive a step up transformer so that 120vac RMS would be availalbe at the low end of 105vdc input, and in about 5 to 8 kw in size ?

John II

[ Parent ]

Re: 120vdc input 5 to 100 kw inverter (none / 0) (#20)
by ibedonc on Tue Mar 30, 2004 at 12:13:47 PM MST

yes +80 / gnd / -80 for 160 volts but + - 100 volts would be better

A DC/DC would be best I will be posting one of those also ,in your case you would put 100 -->> 200 volts in and get +-100 volts out for the FSW. I am going to use 48volts for my DC/DC , hopefully I will be able to soon Document the Schematics, I have been building and when I get a working one built then
I add the correct values

[ Parent ]

My Adventures with Designing A Full Sine PWM Inverter | 24 comments (24 topical)

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