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Dear Sunny,
Can you tell me how the gate driving circuit done...Can we use any gate driving IC?? The PWM from PFC controller will be in Pulses..So,how can we switch ON one mosfet continuously for half cycle when other mosfet switching ON/OFF... how to do this???
Dear Sunny,
Thank you so much for your brief explanation.It really helped me ..
But i have some questions here.
Here,Will the PWM control is done by PFC IC??Correct me if am wrong.. Then what does the controller is doing here??
Will The Controllerer sense input voltages,input current and...
Dear Godfreyl,
If we measure the Input current,input voltage,output voltage and given to the controller as well as PFC controller will the PWM pulses vary automatically as per the Output current?? Why am asking because,here the Gate driver is getting pulses from PFC IC but not from...
Dear godfreyl,
Thanks for your reply.
I have a doubt..Can we vary the PWM signal for mosfets by comparing sine wave and triangular wave??As we will do in inverters.. Can we do like that??
If i would like to charge the battery with 5A max for some time how to do that??Do you have any idea...
Dear Godfreyl,
Thanks for your reply..
When the secondary voltage varying from 0to 24V, we need to vary the duty cycle right?? because, in bosst circuit as per the input voltages we need to vary the duty cycle.. So how to vary the duty cycle,when the voltage varying from 0to 24V
Dear Goldsmith,
Thanks for your reply..
I know that formula..Used in Boost converter when the input voltage is DC.. In DC the Vin(min) and Vin(max) are at certain voltages..so we can easy find the duty cycle.. But here,the input is 24VAC..Varies from 0to24V and 0to-24V..So how to vary the duty...
Dear all,
Kindly suggest me how to design the driving circuit forthis charge controller?? How to vary the duty cycle here?? Please can anyone help me out...
From this circuit i will replace the diode with mosfets to convert to inverter later.. Am planning to design charge controller as well as...
Dear Goldsmith,
Thanks for your reply..
I have posted one post in power electronics forum named "Can anyone Explain this Battery charger concept"..Can you support me how to design fully??
godfreyl,
Thanks for your reply..
So,they have taken all instantaneous voltages(0to peak) and varying the duty cycle?? How to do this variation?? For 24VAC input, to get 30VDC for charging Will the duty cycle varies from 20% to 100%??As per normal calculation (Which we do for DC Converter)...
Hi Godfreyl,
Thanks for your reply..
I know about the Boost converter..Since the boost converters are come under DC-DC converters there is no need to calculate for -Ve voltages.. And also the input voltages will not come to Zero and -ve in boost converter..
We will calculate the Inductor value...
Hi all,
Here am attaching the datasheet of Batttery charger..Kindly go through it and explain me how they form boost circuit??and how they calculated the duty cycles?? If i would like to get 30V output to charge 24V,45AH battery how to calculate the duty cycle?? The mains waveform Has Positive...
Dear all,
I would like to know about Boost converter in depth. As i know it comes under DC-DC converters. Am having little doubts on this. In this converter we can controll the voltage. But can we control the current??? One more thing is can we give AC voltage as input for bosst converter?? If...
How can we calculate, how much current we gain when we shorted the transformer??How much amount of energy stored and how much current can we get?? Kindly send me any calculations how to calculate the current from the stored energy.. How to vary the pulse?? Will it be depends on battery reference...
Tahmid,
Thanks for your reply..
I have a query..Please don't mind if it is silly..
From the transformer,AC signal will come..Positive and negative.. At starting, Positive pulse will be connected to drain of lower left mosfet and negative is connected to Drain of lower right mosfet...How can...
Dear Tahmid,
Thanks for your reply..
Can you explain how can they control the current using mosfets???
In charging mode lower 2 mosfets will be ON??? Tahmid ,please let me know how this charging done if upper mosfets are in OFF condition..I mean how the circuit gets closed loop??
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