400v Capacitor Charging Circuit

March 14, 2018

Image hosting 10mb limit. Version 2 of my previous capacitor charger.

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Just because its rated for 400v doesnt mean that it will be used to hold 400v.

400v capacitor charging circuit. Super capacitor battery charger. Dual board makes it safer with hv on top and lv at the bottom. High voltage power supplies and capacitor chargers are readily found in a number of applications including professional photoflashes security control systems pulsed radar systems satellite communication systems and explosive detonators.

Hi ill like to design a 400v capacitor bank charger from a 230ac line. Lets assume you charge up the capacitors with the maximum 400v. I have the circuit from the picture below and a 400v 1000uf capacitor the problem is from 200v up the charging is going very slow and it stopes at 230v any ideas.

Rc is the time constant of the rc charging circuit. Ideally it would charge the capacitors within seconds which implies in my case a current rate of about 5a so the charger should deliver a power around 2kw. I have a some of questions.

After a period equivalent to 4 time constants 4t the capacitor in this rc charging circuit is virtually fully charged and the voltage across the capacitor is now approx 98 of its maximum value 098vs. This is intended to be a short instructable on how to build a capacitor charger since ill be quite busy until i finish my classes it might not have as many images as i would like to but after getting some requests ive decided to take a pair of. It all depends on how much voltage you want to charge it to which determines the energy stored in the capacitor.

An oscillator with a transformer and a full wave rectifier bridge. Using an inverter transformer. An active circuit components will be used to achieve required performance and efficiency and of course it should be capable of handle perfectly on varying loads alsowe need to consider the following points while we design super capacitor rechargeable battery.

1 will the discharge speed of the capacitors be affected since they are wired in parallel. Dcdc converter capacitor charger takes inputs from 475v to 400v. More solid and easy to handle safely hysteresis avoids excessive.

2 what would be the most simple andor efficient way of charging the capacitors. The simple charge method connecting the battery to t. As it is for charging capacitors a big ripple voltage isnt a.

I want to charge it at least to 350v. By robert milliken and peter liu download pdf introduction. However youre not going to get much energy from that.

Yes if you make two series strings of two 200v 330uf capacitors and connect them in parallel then you will have a capacitor bank rated for 400v and a capacitance of 330uf. 4x 400v8800uf wired in parallel. Super capacitors will be used in parallel with the batteries and pulsed load.