A Compact Inductive Type Pulse Generator Using Diodes as Opening Switch

This paper proposes a compact pulse generator for NOx removal application for diesel automotive. The rising time is important factor to increase NOx removal efficiency in pulsed corona discharge method. Manufacturing cost and compactness of the pulse power generator should be satisfied for automotive application. The proposed pulse power uses a low voltage thyristor, a pulse transformer with the function of saturated magnetic switch, and series connected general diodes as opening switch to satisfy that requirements. With 200 resistor load, the experiment results show that the output voltage is 21kV, the rising time is about 21 ns, and the pulse width (FWHM) is about 42 ns.

[1]  I. Grekhov,et al.  Power drift step recovery diodes (DSRD) , 1985 .

[2]  A.J.M. Pemen,et al.  Repetitive pulsed power to serve nanotechnology, sustainability and hydrogen production , 2003, Digest of Technical Papers. PPC-2003. 14th IEEE International Pulsed Power Conference (IEEE Cat. No.03CH37472).

[3]  K. Takaki,et al.  Multipoint barrier discharge for removal of NO/sub x/ from diesel engine exhaust , 2001, PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference. Digest of Papers (Cat. No.01CH37251).

[4]  K. Takaki,et al.  Oxidation and reduction of NOx in diesel-engine exhaust by dielectric barrier discharge , 1999, Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358).

[5]  M.G. Grothaus,et al.  A synergistic approach for the removal of NO/sub x/ and PM from diesel engine exhaust , 1999, Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358).