Hello, in a little project, I rectified 230 V 50 Hz to 320 V DC an want to use a LLC Halfbridge resonant converter, to convert the 320 V to 100 - 400 V. Any recommendations for the transformer? Switching frequency will be (due to IGBTβs in the half bridge) Around 10 kHz to 40 kHz. I did not find ready wounded transformers for a case like this but maybe you know a product or manufacturer. Thanks!
To play around with/learn. line regulation/control loop doesn't really need it. Should I drop a current sense resistor/amplifier, and voltage divider feeding the mcu adc on the board as well?
So, I've been considering building a switched mode welding power supply.
I've been spending some time learning about high powered switching converters for this, and had a few questions. It seems like a resonant ZVS full-bridge converter would be a good choice for the 3-5 kW range I'd be targeting. I have SO MANY QUESTIONS.
I've had a lot of problems sizing the transformer, and picking out the core. Torodial or not?
Do I need to target a specific inductance, or can I just get any inductance and just pick the appropriate capacitor size to resonate at my target frequency?
Since I'm moving so much current at about 200-500 kHz, I need to use litz wire, right? so that's a bunch of small-gauge wire. Can I do this by alternating a strand of primary next to a strand of secondary, almost like a ribbon cable? Would this work to prevent self-sheilding?
What ratios of input-output voltage are reasonable for a converter of the full bridge type?
Sorry for the wall of text, but I don't even have a textbook to go off of, I've just been working off google searches, which is not much good for getting the whole picture . Any and all direction you can provide will be appreciated!
Does anyone know how Resonant DC to DC type converters work? Im understand tank resonance with an AC source, but I dont know how a buck type converter works because it is DC to DC, so how does the resonant part create ZVS or ZCS with no AC source?
I'm not saying this to convert people to Buddhism despite being one (encouraging others to convert is highly discouraged in Buddhism) but because my spirituality is one of my "special interests" and I just realized why it might resonate with autistic people.
As a spirituality it's focused less on a transcendent higher power and more on the practical matter of the suffering of life, the causes of that suffering, and the path leading to its cessation. At its foundation, that's what Buddhism is all about, and the first thing the Buddha ever taught about. And I think we can agree most of us have faced extra suffering.
Additionally, Buddhism is a contemplative, introspective religion that encourages deep examination, and the cultivation of both deep tranquility but also direct experience into the nature of one's mind. So it matches the personalities of those who would like to avoid overestimulating focus on external things. Some of the great Tibetan masters were yogis who lived alone in caves their entire lives.
Third, Tibetan Buddhism in particular is characterized by rigorous analytical logic, including questions that investigate the nature and existence or non-existence of the self itself, and analyzing with logical reason to see if the teachings are true. The Buddha himself encouraged his followers to not believe his words on faith but to test them out for themselves.
That's all; this wasn't meant to turn anyone to Buddhism; neither I nor Buddhism cares about gaining followers. Since my Buddhist spirituality is a fixation though, I was excited when this light bulb connecting the two subjects went off and wanted to write about it.
Title says it all, had some idiots take off the resonator on the passenger side because they thought it was a catalytic converter. Trying to deal with it right now, but looks like it's still gonna cost minimum $700 and more. What a hassle to deal with. Anyone here have any suggestions on what I can do?
Or is it just a waste of gold
