graph LR
subgraph "三相PFC升壓拓撲"
A[三相380VAC輸入] --> B[EMI濾波器]
B --> C[三相整流橋]
C --> D[PFC升壓電感]
D --> E[PFC開關節點]
subgraph "主開關管陣列"
F1["VBP165R76SFD \n 650V/76A"]
F2["VBP165R76SFD \n 650V/76A"]
end
E --> F1
E --> F2
F1 --> G[高壓直流母線]
F2 --> G
G --> H[直流母線電容組]
H[母線電容組 \n 低ESR電解+薄膜]
end
subgraph "PFC控制與驅動"
I[PFC控制器] --> J[柵極驅動器]
J --> F1
J --> F2
K[電壓回饋] --> I
L[電流回饋] --> I
M[過流保護] --> I
end
subgraph "電氣應力防護"
N[RCD吸收電路] --> E
O[母線TVS陣列] --> G
P[柵極電阻+TVS] --> J
end
style F1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
逆變橋與焊接輸出拓撲詳圖
graph TB
subgraph "全橋逆變拓撲"
A[高壓直流母線] --> B[上橋臂開關節點]
subgraph "上橋臂IGBT"
C1["VBM16I30 \n 600V/30A"]
C2["VBM16I30 \n 600V/30A"]
end
B --> C1
B --> C2
C1 --> D[變壓器初級]
C2 --> D
D --> E[下橋臂開關節點]
subgraph "下橋臂IGBT"
F1["VBM16I30 \n 600V/30A"]
F2["VBM16I30 \n 600V/30A"]
end
E --> F1
E --> F2
F1 --> G[逆變橋地]
F2 --> G
end
subgraph "輸出與焊接負載"
D --> H[高頻焊接變壓器]
H --> I[次級整流電路]
I --> J[焊接輸出電感]
J --> K[焊接輸出端子]
K --> L[焊接電弧]
M[引弧電路] --> L
N[保護氣路] --> L
end
subgraph "IGBT驅動與保護"
O[DSP控制器] --> P[驅動信號]
P --> Q[門極驅動器]
Q --> C1
Q --> C2
Q --> F1
Q --> F2
R[去飽和檢測] --> S[故障鎖存]
T[電流採樣] --> U[過流比較器]
U --> S
S --> V[關斷信號]
V --> Q
W[負壓關斷] --> Q
end
style C1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
輔助電源與負載管理拓撲詳圖
graph LR
subgraph "集成半橋同步Buck轉換器"
A[12-24V輸入] --> B[輸入濾波]
B --> C["VBQF3316G \n 高側開關"]
C --> D[開關節點]
D --> E[輸出電感]
E --> F[輸出電容]
F --> G[穩壓輸出]
H["VBQF3316G \n 低側開關"] --> D
I[PWM控制器] --> J[高側驅動器]
I --> K[低側驅動器]
J --> C
K --> H
L[電壓回饋] --> I
M[電流檢測] --> I
end
subgraph "多路負載分配"
G --> N["12V/5V \n 輔助電源軌"]
N --> O[控制板電源]
N --> P[風扇與泵電源]
N --> Q[氣閥電源]
N --> R[送絲機電源]
N --> S[通信模組電源]
end
subgraph "智能管理功能"
T[MCU] --> U[軟啟動控制]
T --> V[負載監控]
T --> W[故障診斷]
T --> X[通信介面]
V --> Y[電流監測]
V --> Z[溫度監測]
end
style C fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
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