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(7) Try to keep PCB traces between driver IC and mosfets as short as possible with equal length and same width, that will help in more
symmetrical drive signals .
Few Basic thumb rule points for these types of designs:
(1) Always put some basic RC (can do away with Diode for now) snubbers between mosfet`s drain to source.
(2) There should always be a dead time of say 3% or above of total period of the pulse, that also helps in transformer flux total...
May be this "new/old battery selection" is actually an external user control to select two set points for battery charging current and battery upper level charging cutoff point... as per my experience as the battery ages , its ability to achieve higher terminal voltages during charging degrades...
After going through your above posted code i can smell that your above "charity" seems ill intended ... the code you posted is missing too much part and does not makes much sense , that said i feel that you are doing this just for advertisement purpose .. so dear if you really want to advertise...
AFAIK these so called "High-Frequency double conversion type Inverters " have no isolation between output H-Bridge (DC-AC) stage & Input push-pull (DC-DC) stage ... the grounds are tied together .. so always expect a shock when you connect these types of inverters to mains grid ...
Are you using full wave or half wave zero crossing signals ? ...if using half wave zero cross and from that calculating next zero cross then this may not work as this may introduce a unbalanced SCR firing angles.
Next , in these types of SCR firing schemes you can not utilize the full wave`s...
I am 100% sure that the original poster worry here is about Charging mode heating , during battery to Inversion process heating might not be that much .
In addition to that , even in charging mode only the lower Left/Right mosfets of H-Bridge will be heating too much as they are the main...
To minimize Mosfets heating you can go with the mosfets with the lowest RDsOn on types , BUT still expect a good amount of heat as the charging topology itself is very heat generating due to losses associated .
Capacitors heating is due to 2 major reasons , first being there nearness to Heat...
Practically even the least professional guy is not expected to do this mistake , it`s different story if we think of a cobbler starting a salon though ... :-)
Dear all,
I have one brand new Xeltek SuperPro 3000u Universal Programmer for sale... so if any one interested then he can forward his offer to me using PM,thank you.
Dear Arif ,
It`s not a good programming practice to set configuration bits through writer/programmer configuration word setting , instead you should read thoroughly the manual of your "C" compiler / "IDEs" there you will find a way to define configuration word settings using a macro or some...
First tell us which programmer are you using ? most of the programmers will preserve the factory programmed calibration values BUT still it is possible that some programmers may not support this or have this thing supported with some "optional" setting. To rule out any such thing i recommend you...
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