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A model has been developed that shares the steady-state and the dynamic voltage-current (V-I) characteristics of a xenon head lamp in a motor vehicle. This study proposes the modelling method, which is based on the spline interpolation algorithms including a major factor such as its temperature that is responsible for the design of an high-intensity discharge (HID) ballast during a hot re-strike....
It is the purpose of this paper to explore the problem of dimming the HID lamp used in the automotive headlight system. To investigate the relationship between the lamp power and control parameters, a power-dependent HID lamp model is established in this paper. The two methods, dynamic duty-ratio control and dynamic bus voltage control, are analyze and applied in the system. The dynamic bus voltage...
This paper is to examine different circuit topologies of HID electronic ballasts for the application in automotive systems. The paper examines the practical issues for the implementation of an HID ballast for the automotive environment. Some of the vital practical issues for successful operation of the HID lamp are discussed. Experimental waveforms from the prototype built in the laboratory, under...
In this paper, a transformer with small size and relatively insensitive to distributing parameter is present. Two types of four different high-voltage pulse transformers used in the igniter circuit of HID ballast are examined. This comparison concludes that the transformer with the smallest size using R core is optimal. Experiment results are used to validate the conclusion
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