Quadratic Approximation for High-frequency Behavioral Fluorescent Lamp Model

A new high-frequency behavioral PSpice-compatible model for fluorescent lamps is proposed. The model is based on the combination of a linear approximation of the envelope of the dynamic v-i characteristics and the quadratic approximation of the instantaneous v-i curve. The mathematical expression of the incremental impedance of the fluorescent lamp is obtained from this model. The model can be utilized for either time or frequency domain electronic ballast simulation. Simulation results demonstrate good agreement with experimental behavior of fluorescent lamps.