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Our usage is a 125 amp alternator. The 3 phase stator winding is connected to 6 diodes (3 positive and 3 negative) and a filter capacitor. The rotor is provided 28Vdc at 0-6 amps. As the rotor rotates the lines of flux are cut by the stator and the resultant voltage rectified by the diodes to provide 28Vdc at 0-125 amps.
I have also seen several 3 phase power supplies for a radar system. Back in the pulse radar days we had SPS-10 surface radar (and several more) that used 208 3 phase input power units to develop the regulated DC power for the system.
What else can I help you with?
What are the applications of rectifiers in use?
A bridge rectifier, is a group of rectifiers (4 in a single phase) wired so that each half of an AC current is passed to respective positive and negative lines of a DC output. It provides full wave rectification of AC into DC.
Rectifiers used for most larger alternator systems are which ones?
a full-wave bridge rectifier
How many number of thyristors are used in the single phase full wave bridge?
A full wave bridge uses 4 diodes to operate. A half wave bridge used 2 diodes to operate. Thyristors used in a full wave bridge are triggered diodes. To make these types of bridges operate a trigger board is required to be connected to the gate input of the thyristor. Thyristors are also known as silicon controlled rectifiers (SCR).
What is difference between single phase and three phase rectifiers?
Single phase rectifiers are suitable to power loads of up to only about 15 kW. For higher power demands, three phase rectifiers are preferred for the following reasons: Higher dc voltage, better TUF, better input power factor, less ripple content in the output current - therefore giving better load performance and a smaller size of filter circuit parameters because of the higher ripple frequency.
Where can you find a bridge rectifier?
Bridge rectifiers are used in alternators and other electronic equipment that needs full DC current and can be bought at local electronic stores as well as the internet. Radio shack sells them also. A bridge rectifier is a 2 or 4 rectifiers that rectify AC current into DC. A full wave bridge usually consists of 4 diodes that rectify both the negative and positive swings of the AC current into DC. With the proper center wound transformer, only 2 diodes are needed. Search Google for a "full wave rectifier" diagram!!!
Are diodes rectifiers?
No. Diodes are diodes. One diode can be USED as a half-wave rectifier. Four diodes can be used to build a bridge rectifier.
What is the frequency of a bridge rectifier with no filter present?
It is like a sine-wave, but in the cycle both halves have the same polarity. Alternate half-cycles are reversed in phase so that they are all the same way. The fundamental frequency in the waveform is double the supply frequency, making the design of the filter easier.
What are the applications of precision rectifiers?
Precision rectifiers are used in the design of instrumentation systems.
Is fans used in rectifiers?
no
How a 3 phase 3 wire rectifier system operates?
rectifiers are used to recrify ac to dc, I'm ot sure that you would use dc for any large voltage, though 3 phase electrics are used in commercial equipment.
Why a capacitor is used in full wave bridge rectifier and I am not talking about the filter capacitor?
If you want an answer from an alter kocker (yiddish for "old fart" since we were still studying VACUUM TUBES when I took my degree in the subject, for goodness sake!), I would have to see the circuit diagram to be certain, but I have seen capacitors used as "ticklers" to ensure quick and full conduction of the rectifiers, and to cut out RF interference.
Why not stepup transformer is not used in rectifiers?
Rectifiers turn A/C into D/C, but transformers can only run on A/C.
