04/04/2021

Rectifier Efficiency & Power Efficiency

 

The input of the single phase half wave rectifier is 60 W whereas the output is 24 W. Find out rectifier efficiency and power efficiency.

Solution

Rectifier efficiency

    = ( Output DC Power / Input AC Power ) × 100%

    = ( 24 / 60 ) × 100%

    = 40%

Power efficiency

  • The input of the single half wave rectifier is 60 W , it means that 30 W for positive half cycle and remaining 30 W for negative half cycle. 
  • As the single phase half wave rectifier conducts only for half cycle therefore only 30 W for positive half cycle is converted into 24 W and remaining 6 watts as loss.

Power efficiency 

     = ( Output DC Power / Half of Input AC Power ) × 100%

     = ( 24 / 30 ) × 100%

     =  80%

Therefore the rectifier efficiency is 40% whereas the power efficiency is 80%.

You may also like :

Per unit resistance and Per unit reactance

Compare – Distribution transformer and Power transformer

Types of Dry type transformers

Construction and working of Zig Zag transformer

 

No comments:

Post a comment