Battery chargger for an inverter Current calculations ?

[thannara123]

Hello experts ,
I want to build a battery charger in an inverter using an Hbridge .
How can i vary the current for the battery as constant current charging ,Topping carging ,and the floating charging .
I know that diffrent current can produce with varing PWM.
But how the calculation for the boost converter ,may i get any refferance ?
the charger circuit look like

 

[Easy peasy]

The issue here is the complete lack of current limit if the leads are accidentally shorted - boom ! - or a lower voltage battery connected - not really a useful solution.

 

[FvM]

The issue here is the complete lack of current limit

Yes. Nevertheless the solution is used by some simple UPS inverters, probably with a fuse as only protection against the said conditions.

I agree that a full featured buck-boost converter makes a better battery charger than boost only.

 

[thannara123]

Yes in my area most of the ups uses this type charging ,me also using one from 10 years back It is a cost effective one .
may i know what others using technology