Surge Voltage Suppression Circuit Design of On-Board SCR Controller

Abstract:

SCR controller is one of the components of the SCR system, which should pass the test pulse 5b. The features and test requirements of pulse 5b are introduced. Its energy is very large, so passing the test is difficult. Two surge voltage suppression circuits are designed. The first design utilized a surge stopper-LT4356, its work process includes fault timer period, warning period and cooling period. During the cooling period, the SCR controller cannot work normally. So connecting a capacitor in parallel to the output of the surge voltage suppression circuit is used to improving its performance. The second design utilized two pieces of TVS, since the test pulse is continuous, steady state power dissipation must be considered when choose TVS. Finally, it verifies the feasibility of the two design schemes by experiments and leads to a selection criteria for them.

• Periodical: Applied Mechanics and Materials (Volumes 333-335)
• Pages: 2358-2363
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.333-335.2358
• Online since: July 2013
• Authors: Tai Long Liu, Hua Biao Jin, Qi Dou Wu, Peng Li, Long Huang, Fang Ping Yu
• Keywords: Pulse 5b, SCR Controller, Surge Stopper, TVS

References

[1] International Organization for Standardization: ISO 16750-2. Road vehicles - Environmental conditions and testing for electrical and electronic equipment-Electrical loads. 2006(12).

DOI: 10.3403/30268863

[2] Zhang Huayu: Electromagnetic Compatibility Design of On-Board SCR Controller. (Master Thesis) Wuhan University of Technology, Wuhan, Hubei, China, (2011).

[3] LINEAR. LT4356 Over voltage Protection Regulator and Inrush Limiter. 2007(4).