MODELING OF A HIGH-FREQUENCY OPERATED FLUORESCENT LAMP IN AN ELECTRONIC BALLAST ENVIRONMENT

The authors describe the dynamic modelling of a high-frequency operate d fluorescent lamp in an electronic ballast environment. The model inh erently includes the negative resistive characteristic, allows the stu dy of electronic ballast design using series resonant converters, and can provide useful information for the optimisation of the electronic ballast design. The fluorescent lamp model for high-frequency operatio n has been developed and implemented. Predictions for the lamp system operation generally agree very well with measurements obtained from a 33 kHz electronic ballast - fluorescent lamp system. The use of the mo del for the designing the ballast components is illustrated. This mode l is simple and can be employed in existing simulation packages for co mputer-aided electronic ballast designs.