Secondary Recifier For Buck-Derived Converers Presened by Xinbo Ruan Aero-Power Sci-ech Cener Nanjing Universiy of Aeronauics & Asronauics 211-1-27 1
Full-wave, Full-Bridge and Curren Doubler Recifier Full-Wave Full-Bridge 211-1-27 2 Curren Doubler Recifier
v rec Half-Wave Recifier Posiive cycle v rec Negaive cycle V = o 211-1-27 half Vsec_ m 3 D
Derivaion of Full-Wave Recifier Two recifiers wih wo coupled windings share he filer. Posiive cycle v rec Negaive cycle 211-1-27 4
v rec Derivaion of Full-Wave Recifier v rec vrec 211-1-27 5
Operaion Principle of Full-Wave Recifier (1) D R1 v rec v rec D R2 T s /2 T s 211-1-27 6
Operaion Principle of Full-Wave Recifier (2) D R1 v rec v rec D R2 T s /2 T s 211-1-27 7
Operaion Principle of Full-Wave Recifier (3) D R1 v rec v rec D R2 T s /2 T s 211-1-27 8
Operaion Principle of Full-Wave Recifier (4) D R1 v rec v rec D R2 T s /2 T s 211-1-27 9
Relaionships of Full-Wave Recifier D R1 + v rec + D R2 v rec V V o sec_ m = D = eq 2D V = V = 2V half DR1 DR2 sec_ m 1 I = I = I 2 T s /2 T s 211-1-27 DR1 DR2 o 1 Inducor curren can no flow in he negaive direcion.
Derivaion of Full-Bridge Recifier (1) Two recifiers share boh he winding and he filer. Posiive cycle v rec Negaive cycle 211-1-27 11
Derivaion of Full-Bridge Recifier (2) v rec 211-1-27 12
v rec v rec Derivaion of Full-Bridge Recifier (2) 211-1-27 13
Operaion Principle of Full-Bridge Recifier (1) v rec i DR4 T s /2 i DR3 T s 211-1-27 14
Operaion Principle of Full-Bridge Recifier (2) v rec i DR4 T s /2 i DR3 T s 211-1-27 15
Operaion Principle of Full-Bridge Recifier (3) v rec i DR4 T s /2 i DR3 T s 211-1-27 16
Operaion Principle of Full-Bridge Recifier (4) v rec i DR4 T s /2 i DR3 T s 211-1-27 17
Relaionships of Full-Bridge Recifier v rec V V V o sec_ m = D = eq = V = V 2D half DR1 DR2 sec_ m 1 I = I = I 2 T s /2 i DR3 T s Inducor curren can no flow in he negaive direcion. 211-1-27 DR1 DR2 o 18 i DR4
Derivaion of Curren-Doubler Recifier (1) Posiive Cycle v rec v rec 211-1-27 19
Derivaion of Curren-Doubler Recifier (2) Negaive Cycle + v rec + v rec 211-1-27 2 + +
Derivaion of Curren-Doubler Recifier (3) Two recifiers share he winding and filer capacior. o half Vsec_ m 211-1-27 21 V = D
Operaion Principle of Curren-Doubler Recifier (1) D R2 1 i o 1 1 i o 2 /2 2 D R1 2 211-1-27 T s /2 T s 22
Operaion Principle of Curren-Doubler Recifier (2) D R2 1 i o 1 1 i o 2 /2 2 D R1 2 211-1-27 T s /2 T s 23
Operaion Principle of Curren-Doubler Recifier (3) D R2 1 i o 1 1 i o 2 /2 2 D R1 2 211-1-27 T s /2 T s 24
Operaion Principle of Curren-Doubler Recifier (4) D R2 1 i o 1 1 i o 2 /2 2 D R1 2 211-1-27 T s /2 T s 25
Relaionships of Curren-Doubler Recifier D R2 1 + _ i o 1 2 /2 2 V V V D R1 o sec_ m = D half = V = V DR1 DR2 sec_ m 1 211-1-27 I 26 DR1 = IDR2 = I T s /2 T s o 2
DCM of Curren-Doubler Recifier (1) D R2 1 i o 1 1 /2 2 D R1 2 Inducor curren can flow in he negaive direcion. 211-1-27 T s /2 T s 27
DCM of Curren-Doubler Recifier (2) D R2 1 i o 1 2 D R1 2 211-1-27 T s /2 T s 28
DCM of Curren-Doubler Recifier (2) D R2 1 2 D R1 Inducor curren can flow in he negaive direcion. 211-1-27 29 T s /2 T s
Comparison of Reecifiers (1) Design a DC/DC converer Inpu Volage: V in Oupu Volage: Oupu Curren: Given he duy cycle of all he swiches be.5 211-1-27 3
Comparison of Reecifiers (2) Recifier Topology Winding Raio Curren Sress Volage Sress No. of Diodes Toal Power of Diodes Applicaions Full- Wave D R1 + v rec _ + _ K 2V in /K 2 4V in Low oupu volage D R2 Full- Bridge K V in /K 4 4V in High oupu volage CDR D R2 1 2 2V in /K 2 4V in 211-1-27 D R1 31 + _ K /2 Low oupu volage, high cureen