1. Impact of the Extensive Usage of
Energy Savers on Power Quality
By
Muhammad Farrukh Yaqub
University of Eng & Tech Lahore-Pakistan

2. Presentation Layout
Motivation.

Calculations

Circuit Diagram

Waveforms

Results

Conclusions


3. Motivation
Rapid increase in the electric energy

demands.
 Popularity of Energy Savers Lamps.
 Encouragement from WAPDA.
 Problems with Energy Savers.

4. Encouragement from WAPDA
(Taken from back side of Electricity Bills)

5. Calculations
Average Power: Only the fundamental component of current

contributes to the average power from the mains. i.e.,
Pav = Vrms I1rms Cos Ф1
THD

THD = [(Is/Is1)2-1]1/2
Power Factor

PF = Pav / Irms Vrms
Current Distortion Factor

μ = Irms1/Irms
Displacement Factor

DF = CosФ1

6. Circuit Diagram

7. Load Current Waveform

8. Frequency Domain Analysis

9. Practical Current Waveform

10. Amplitudes for Different Harmonics

11. Results from Calculations
Average Power:

Pav = Vrms I1rms Cos Ф1 = 24W
THD = [(Is/Is1)2-1]1/2 = 125.97 %

Power Factor

PF = Pav / Irms Vrms = 0.5733
Current Distortion Factor

μ = Irms1/Irms = .623
Displacement Factor

DF = CosФ1 = 0.92

12. Suggestions
1. Using Active Filter:
2. Using Randomized Switching of the Bridge
Rectifier.

13. Conclusions
High value of Total Harmonic Distortion and

poor Power Factor.
It proves that the intensive use of energy savers

badly effects the power quality especially in
winter season.
The active filters should be added in the circuitry

of the energy savers lamps to obtain correction
in the power factor and harmonics elimination.

14. Thank you very much.