ENERGY SAVING VIA ELECTRONIC BALLAST
ESSAM ABDEL GAYED MOHAMED HENDAWY;
Abstract
A high frequency electronic ballast operating fluorescent lamp has been implemented. The circuit is simple and need only one MOSFET transistor as a semiconductor switch. Also, it doesn't need a filter capacitor after the used rectifier bridge. Harmonic reduction and improving the power factor of the circuit are achieved when utilizing the proposed electronic ballast.
The analysis and design of the circuit is accomplished and the equation of the input current is obtained using Laplace transform. A basic program is built to illustrate the performance ofthe input current.
The thesis presents a suitable Pspice model for fluorescent lamp at high frequency. Simulation of the proposed circuit is carried out using Pspice program. The simulation illustrates the input current and voltage, the switch current and voltage, and the lamp current and voltage. Simulation is carried out for both starting and steady state operation of the circuit. The results of the simulation have been found consistent with the corresponding results of the analysis and basic program.
The circuit is implemented with two values of input series inductor and different values of duty cycles for the purpose of design refinement and comprehensive study. The experimental results were highly consistent with the simulation results.
The proposed circuit give a very good performance at the supply side compared with the electromagnetic ballast and conventional electronic ballast. The current drawn is very close to sinusoidal form and in-phase with the supply voltage. The harmonic contents in the supply current are low and total harmonic distortion is good. The harmonic contents in the supply current are close to the maximum values of the harmonics that are given in IEC 555-2 standard and European standard En 61000-3-2
Future work
I. Modification in the input filter for elimination of high harmonic contents.
2. Study of the proposed circuit when supplying certain resistive loads operating at high frequency.
3. Energy saving in motor drive systems.
103
The analysis and design of the circuit is accomplished and the equation of the input current is obtained using Laplace transform. A basic program is built to illustrate the performance ofthe input current.
The thesis presents a suitable Pspice model for fluorescent lamp at high frequency. Simulation of the proposed circuit is carried out using Pspice program. The simulation illustrates the input current and voltage, the switch current and voltage, and the lamp current and voltage. Simulation is carried out for both starting and steady state operation of the circuit. The results of the simulation have been found consistent with the corresponding results of the analysis and basic program.
The circuit is implemented with two values of input series inductor and different values of duty cycles for the purpose of design refinement and comprehensive study. The experimental results were highly consistent with the simulation results.
The proposed circuit give a very good performance at the supply side compared with the electromagnetic ballast and conventional electronic ballast. The current drawn is very close to sinusoidal form and in-phase with the supply voltage. The harmonic contents in the supply current are low and total harmonic distortion is good. The harmonic contents in the supply current are close to the maximum values of the harmonics that are given in IEC 555-2 standard and European standard En 61000-3-2
Future work
I. Modification in the input filter for elimination of high harmonic contents.
2. Study of the proposed circuit when supplying certain resistive loads operating at high frequency.
3. Energy saving in motor drive systems.
103
Other data
| Title | ENERGY SAVING VIA ELECTRONIC BALLAST | Other Titles | ترشيد الطاقة عن طريق الكابح الالكترونى | Authors | ESSAM ABDEL GAYED MOHAMED HENDAWY | Issue Date | 1998 |
Attached Files
| File | Size | Format | |
|---|---|---|---|
| B10615.pdf | 320.69 kB | Adobe PDF | View/Open |
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