O Cálculo e Projeto de Dissipadores
Por: Ueslei Santos • 12/6/2023 • Pesquisas Acadêmicas • 4.243 Palavras (17 Páginas) • 45 Visualizações
[pic 1]
Cálculo e Projeto de Dissipadores
de Calor para Diodos e Tiristores
Guilherme de Azevedo e Melo
Geração de Calor
Diodo:[pic 2][pic 3]
P = V ⋅I + r ⋅I2
+ f ⋅ t ⋅I ⋅ V
(TO) FAV T FRMS[pic 4]
2 rr RM D
Simbologia
Tiristor:[pic 5][pic 6]
P = V ⋅I + r ⋅I + f ⋅ t ⋅I ⋅ V
2 SEMIKRON
(TO) FAV T FRMS 2 rr RM D
GTO:[pic 7][pic 8]
P = V ⋅I + r ⋅I2
+ Parcela não linear multi-parâmetros)
(TO) FAV T FRMS
BJT:[pic 9]
P = V
⋅I + f ⋅ V
[pic 10]
⋅I ⋅ (t + t + t
+ t ) + r
CE(Sat) Cmed 2 CE(off ) Cef ri fv rv f [pic 11]
[pic 12][pic 13][pic 14]
MOSFET:
P = (R ⋅I2 + V ⋅I ) + f ⋅ V
[pic 15]
⋅I ⋅ (t + t )
DS(on) ef SD D[pic 16]
2 DS(off ) ef on off
IGBT:[pic 17]
P = V ⋅I + f ⋅ V
[pic 18]
⋅I ⋅ (t + t ) + r ⋅I2
CE(Sat) Cmed 2 CE(off ) Cef on off CE(Sat) Cef[pic 19]
+ vD -[pic 20][pic 21][pic 22][pic 23][pic 24][pic 25][pic 26][pic 27][pic 28][pic 29][pic 30][pic 31][pic 32][pic 33][pic 34][pic 35][pic 36][pic 37][pic 38][pic 39][pic 40][pic 41][pic 42][pic 43][pic 44][pic 45][pic 46][pic 47][pic 48][pic 49][pic 50][pic 51][pic 52][pic 53][pic 54][pic 55][pic 56][pic 57]
v(ωt)
+
R vL[pic 58][pic 59][pic 60]
-
v(ωt)
+
R vL E
- iF
[pic 61]
2/16
Geração de Calor
Diodo:[pic 62][pic 63]
P = V ⋅I + r ⋅I2
+ f ⋅ t ⋅I ⋅ V
(TO) FAV T FRMS[pic 64]
2 rr RM D
Simbologia
Tiristor:[pic 65][pic 66]
P = V ⋅I + r ⋅I + f ⋅ t ⋅I ⋅ V
2 SEMIKRON
(TO) FAV T FRMS 2 rr RM D
GTO:[pic 67][pic 68]
BJT:[pic 69]
P = V ⋅I + r ⋅I2
(TO) FAV T FRMS
P = V ⋅I[pic 70][pic 71]
+ Parcela não linear multi-parâmetros)
CE(Sat) Cmed
...