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That's certainly disappointing, I was hoping synchronous rectification would be the savior rather than using conventional diodes. By the way, do you have any published paper on it, because I now have to do a literature survey to convince my lecturer for my final year project.
Thanks. I will have to give it a try to compare their results myself. Even an increase of 4-10% efficiency is enough to justify their use considering I am paralleling multiples modules of converters.
I am looking to implement synchronous rectification instead of diode in my LLC resonant converter, but most research papers results favors Schottky diodes at higher voltage due to the trivial loss of Vf, couple with the extra effort and expense required for synchronous rectification(SN). The...
Thanks, just understood leakage reactance and the relationship with leakage inductance. For deeper understanding how can I calculate the leakage inductance using theoretical value and not LCR meter? Most places I have been reading says you need empirical solutions to solve for Leakage...
Hi FVM, Please find the attached document(I do hope it's displayed on the comment)
The Lm(magnetising) is the parallel inductor, while the Ls(leakage) or Lr (as shown on the diagram), is the series inductor. The switching frequency is 30Khz, the primary is 9 turns while the secondary is 3turns...
Please how can I measure a leakage reactance of a llc half bridge transformer using resonance? Assuming the magnetizing inductance is 100uH, leakage= 20uH and capacitor = 1.4uF, turns ratio 9:3
Hi, I am using it to switch 4 IGBTS, with only two transistors on at a time. I just want to include dead timing to avoid cross conduction. So for instance, when IGBT 1 & 3 is on 2 & 4 will be off respectively. After looking at the code again, I think the dead timing will be applied to the output...
Thanks, that was helpful. One more question, how can I introduce a dead time to the on and off times of the 'igbt_clock_gen'? For instance 750ns(on time) and 1us(off time) to my code shown below. Appreciate your help.
Test bench
module igbt_firing_tb;
// Inputs...
Hello there, I programmed a code to divide my FPGA clock to my required frequency and then invert into two square wave, however I keep getting an error with the testbench stating "the module pulsegentb(file name) is instantiating itself".
And also with the file reports stating "the instantiation...
Thanks for the suggestions, it's now working after playing with the resistor values. However for understanding sake, can you guys please show me how to calculate the resistors values using the attached schematic below, for instance if i want an output voltage pf 28.8Volts. I still can't get...
Hello there, i have a LM338 voltage regulator i designed and built, however the output of this regulator is in n-Amps. iTried so many circuit suggestion online and tested it in multisim the same problem persist. My question is based on the attached diagram, what i'm i doing wrong? I am trying to...
Hi There. I'm stuck on trying to measure phase noise from my spectrum analyzer. So can somebody please tell me the phase noise, from the attached pictures? In addition i will appreciate it, if you could explain how you measured it.
Please note both pictures gives the same values...
Yeah it surely is.
Thanks for your reply. I've understood it a bit better now. But please how can i design this circuit highlighted below in diagram. Becuase i need to show it to my teachers how they got the values for those resistors.
Thanks for your reply.
P.s Any help from other people are...
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