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Getting peak value of the input at rectifier output

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Fatima Ali

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How can i obtain the peak value ( 310 v) of a 220v rms single phase ,at the output of single phase full wave rectifier ?
Should i use large capacitor ? if yes then what should be the value of that capacitor and its voltage rating and also specify what type of capacitor it should be since it should operate at 50hz ?
Should i use a dc voltage booster to obtain that ?
Or is there any other suggestion you guys have ???
 
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As you know that 220V is basically RMS voltage , so in order to get the peak voltage , you have to rectify it (bridge rectifier) followed by a filter stage , which incorporates a inductor and capacitor , or simply a capacitor the output voltage would be 220*root2 = 311v, if you use a large capacitor , the DC waveform would be more smoothen.
 

The capacitor is going to depend mainly on the load. With zero load, you could use a tiny cap, since the only way the cap will discharge is through diode leakage..
 

barry said:
The capacitor is going to depend mainly on the load. With zero load, you could use a tiny cap, since the only way the cap will discharge is through diode leakage..
Click to expand...
An inverter is connected at the output of rectifier (terminals of capacitor ) and then induction motor is connected at the output of inverter .What should i do for discharging of a big capacitor when these arrangement is made .How to protect the diodes of rectifier and the IGBTS of inverter from the effect of that capacitor ?how should i avoid any wrong happening .
 

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