27 30 Vol.27 No.30 Oct. 2007 2007 10 Proceedigs of the CSEE 2007 Chi.Soc.for Elec.Eg. 0258-8013 (2007) 30-0038-05 TN86 A 470 40 1 1 2 1 (1 430074 2 441021) Curret Coversio Characteristics esearch o Pulsed Power Switch eversely Switched Dyistor YU Yue-hui 1, LIANG Li 1, YAN Jia-sheg 2, PENG Ya-bi 1 (1. Departmet of Electroic Sciece ad Techology, Huazhog Uiversity of Sciece ad Techology, Wuha 430074, Hubei Provice, Chia; 2. Xiagfa TECH Semicoductors Co. LTD, Xiagfa 441021, Hubei Provice, Chia) ABSTACT: I order to produce ad cotrol high repetitive pulses of pulse width at µs, s ad power beyod MW, a ew structure of great power ad super high speed semicoductor switch reversely switched dyistor(sd) applied to laser diode (LD) pulsed source was researched. SD has characteristics of quick ad uiform tur-o o whole area, ifiite coectio i series, high power, high efficiecy of covertig ad log lifetime. The tur-o mechaism ad high desity eergy trasform characteristics, available peak curret, tur-o coditio ad pre-charge, quasi-static state dissipatio ad di/dt characteristics of SD were researched o sigle pulse experimetal platform. Accordig to experietial formula, the extreme curret experimets were doe o SDs of small diameter. The pulse curret of 19.9kA(pulse width is about 30µs) has flowed through φ 20mm SD stack. The high di/dt capability was tested by reducig iductace of mai circuit. The di/dt is ear to 8kA/µs whe discharge voltage is 3kV. KEY WODS: high power switch; reversely switched dyistor; tur-o characteristics; pulse; di/dt (SD) µs s MW SD SD di/dt (50277016 50577028) (20050487044) Project Supported by Natioal Natural Sciece Foudatio of Chia (50277016 50577028). SD φ 20mm SD 19.9kA ( 30µs) SD di/dt 3kV di/dt 8kA/µs di/dt 0 20 30 20 60 [1-6] di/dt ka
30 39 [7-13] I.V.Grekhov (reversely switched dyistor SD) ka kv [14-17] Si SD 2 10 8 ~10 10 W 10 4 ~10 5 W SD SD ( ) 1 SD 1.1 SD 1 SD + p 1~2µs 0.5~1.5kA SD µs s L + U1 C1 L + + + + + p S J3 + + + + p + p + p + p + 1 SD Fig. 1 Structure of SD switch 1.2 SD SD S U 2 SD L + p J2 J1 U2 C2 + J 2 + J 2 + + + 2 L U 1 SD J 2 p + J 3 p p + J 1 J 2 J 2 SD 2 SD 2.1 2 SD C 1 30kV [18] 2DL ~ L D 1 L 2 + SD C1 + C2 ~ 2DL 2 SD Fig. 2 Schematic circuit diagram of SD tur-o experimet platform 2.2 SD 3 SD ( ) 3~5 246A/V s Fig. 3 /V ul/v 1kV/ 492A/ ul 3 SD Voltage ad curret characteristics of SD
40 27 Fig. 4 /V 4920A/ 2kV/ i SD/A 4 SD The experimetal waveform of SD peak curret /V 492A/ 500V/ 5 SD Fig. 5 Typical tur-o characteristics of isufficiet triggerig 2µs 1~2µs 2.3 SD SD 200kA SD [19] 1/3 p I = KS/[ f( t ) ] (1) m SD (1) S SD cm 2 K 2kV K=210 f 1 0.66 t p s 4 SD 15 20mm SD 10.2kV 19.9kA ( 30µs) (1) di/dt 2.2kA/µs 1 SD 2.4 Q SD [20] cr 1 SD ( ) Tab. 1 Peak curret of SD(theoretic value) /mm S/cm 2 t p / s I m/ka Q 20 1.54 15 10 6 20 20 1.54 50 10 6 13 38 8.00 50 10 6 69 76 36.3 50 10 6 310 76 36.3 500 10 6 146 dj b + 1 τ 1 τ Q = ( + 1) d 1 2ν cr F 1 t b ν b+ 4 2 (2) Q b=µ / µ p 2.8 dj F /dt ν = W 2 /2D p W pb p pb D p τ = 1/ 1 1 ( ν τ ) + τ p 5 SD 5 SD 2.5 SD SD 30% SD ( ) 2 2 2 WbIF ( t) P = (3) 3 µ S bq Q ( t) p N F W b I F (t) µ p Q N Q F (t) 6 SD 6 7 GF 1 1.642 4mΩ 3 000V 1 200V 6430A 2 32mm (a) 4 (b) 2 (a) (b) (b) (b)
30 41 /V 1218A / /V (a)sd3228 3 SD3228 6 3 9kV 7(a) 3kV 8.5kA 3µs SD di/dt 8kA/µs SD di/dt 7(b) 2kV (a) di/dt 4.5kA/µs SD SD di/dt 3 1218A/ (b)sd5 1 SD5 2 6 SD Fig. 6 Quasi-static dissipatio of SD 3045A/ 1218A/ (a)u1=3kv (b)u1=2kv 7 SD di/dt Fig. 7 The di/dt characteristics of SD (a) 1.2 SD 2.6 SD di/dt SD di/dt 2 10 5 A/µs 7 SD di/dt 0.22µF SD SD µs s MW SD SD SD SD di/dt SD di/dt 10 5 A/µs [1] [] 6 2 1999 [2] [] 6 2 2004 [3] Heesch E J M Ya K Peme A J M et al Matchig repetitive pulsed power to idustrial processes[j] IEEJ Tras. FM 2004 124(7) 607-611 [4] [J] 2005 25(8) 161-166 Shao Tao Yua Weiqu Su Guagsheg et al Experimetal study of repetitively aosecod-pulse breakdow i atmospheric air [J] Proceedigs of the CSEE 2005 25(8) 161-166(i Chiese) [5] [J] 2003 23(5) 53-57 Li Weibo Mao Chegxiog Li Qiya et al Simulatio research o rogowski coils with SG high-power laser[j] Proceedigs of the CSEE 2003 23(5) 53-57(i Chiese) [6] [J] 2001 21(5) 43-46 Li Ju Wag Yig Wag Zaji A mathematical model of the reusable pulsed liear magetic flux compressor for the electric gu[j] Proceedigs of the CSEE 2001 21(5) 43-46(i Chiese) [7] Heesch V Ya E J M Peme K et al epetitive pulsed power to serve ao techology sustaiability ad hydroge productio [C] Digest of Techical Papers-IEEE Iteratioal Pulsed Power
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