Hello Everybody, Anybody has any

[samerakhaled1]

Hello Everybody,

Anybody has any information of the H bridge rectifier, i need to understand basically how it functions comparing to the full wave rectifier.

Thanks,

Samer

 

[jraef]

How are you defining a "full wave rectifier" that is not an H-bridge?


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington

 

[ScottyUK]

Push-pull rectifier perhaps? Very poor utilisation of the transformer.

 

[cswilson]

I will take a guess that you are asking how a rectifier with a transistor as well as a diode in each leg compares to one with just a diode in each leg. Both have an "H" topology.

The rectifier with just diodes is usually termed a "passive" rectifier, without any ability to actively control when and how it passes current to the DC side. It typically "gulps" current at the peaks of the AC input waveforms. This does lousy things to the power quality of the system.

The rectifier with transistors as well in the legs can be a "active" rectifier. It is essentially the same as an inverter, but usually acting in "(re)generation" mode. By controlling the duty cycle of the transistors, it can much more smoothly take power from the AC input. Of course, this extra capability and complexity costs a lot more.

Curt Wilson
Omron Delta Tau

 

[waross]

The full wave rectifier converts AC to DC.
There is an "H" bridge configuration with switched diodes that is used to reverse the polarity of the DC applied to the load such as a small motor.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[Skogsgurra]

An H-bridge usually is a four-quadrant set of power transistors (Bipolar, MOFET, IGBT etcetera) that is used in DC applications to control a DC (servo)motor. It is so easy to google that I don't offer a LMGTFY. I wouldn't even call it a rectifier - because it is not.

Gunnar Englund

http://www.gke.org

--------------------------------------
Half full - Half empty? I don't mind. It's what in it that counts.

 

[jraef]

I'm wondering if he meant a "Cascaded H Bridge" rectifier used on MV drives, as compared to a standard diode bridge rectifier. But I'm guessing...


"You measure the size of the accomplishment by the obstacles you had to overcome to reach your goals" -- Booker T. Washington