graph LR
subgraph "三相输入整流"
A[三相380VAC] --> B[EMI滤波器]
B --> C[三相整流桥]
C --> D[直流母线540VDC]
end
subgraph "主功率开关桥臂"
D --> E[开关节点]
subgraph "高压MOSFET并联"
F1["VBP165R76SFD"]
F2["VBP165R76SFD"]
F3["VBP165R76SFD"]
end
E --> F1
E --> F2
E --> F3
F1 --> G[负载连接点]
F2 --> G
F3 --> G
end
subgraph "感性负载驱动"
G --> H[鼓风机电机]
G --> I[水泵电机]
G --> J[电磁阀组]
K[续流二极管] --> G
end
subgraph "驱动与缓冲"
L[隔离栅极驱动器] --> F1
M[RCD缓冲电路] --> F1
N[RC吸收网络] --> F1
O[退饱和检测] --> F1
end
style F1 fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
控制与辅助电源拓扑详图
graph TB
subgraph "中压辅助电源"
A[48V/72V输入] --> B[DC-DC转换器]
B --> C[12V/5V输出]
C --> D[控制电路供电]
end
subgraph "中压开关阵列"
subgraph "VBE1102M阵列"
E1["VBE1102M"]
E2["VBE1102M"]
E3["VBE1102M"]
end
C --> E1
C --> E2
C --> E3
E1 --> F[辅助鼓风机]
E2 --> G[控制电磁阀]
E3 --> H[传感器网络]
end
subgraph "低侧信号切换"
subgraph "VBK1240阵列"
I1["VBK1240"]
I2["VBK1240"]
I3["VBK1240"]
I4["VBK1240"]
end
J[MCU GPIO] --> I1
J --> I2
J --> I3
J --> I4
I1 --> K[热电偶多路切换]
I2 --> L[电流采样切换]
I3 --> M[安全联锁控制]
I4 --> N[通信接口隔离]
end
subgraph "监控与反馈"
O[霍尔电流传感器] --> P[信号调理]
P --> Q[ADC输入]
R[温度传感器] --> S[信号调理]
S --> Q
Q --> J
end
style E1 fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style I1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
热管理与保护拓扑详图
graph LR
subgraph "三级热管理"
A["一级: 强制风冷/水冷"] --> B["主功率MOSFET"]
C["二级: 金属基板散热"] --> D["中压MOSFET"]
E["三级: PCB敷铜散热"] --> F["信号MOSFET"]
G[温度传感器] --> H[MCU]
H --> I[风扇PWM控制]
H --> J[泵速控制]
I --> K[冷却风扇]
J --> L[液冷泵]
end
subgraph "电气保护网络"
M["RCD缓冲电路"] --> N["主开关管"]
O["RC吸收网络"] --> P["LLC开关管"]
Q["TVS保护阵列"] --> R["驱动芯片"]
S["MOV压敏电阻"] --> T["直流母线"]
U["续流二极管"] --> V["感性负载"]
W["退饱和检测"] --> X["故障锁存"]
X --> Y[关断信号]
Y --> N
Y --> P
end
subgraph "故障诊断"
Z1[过流保护] --> AA[比较器]
Z2[过温保护] --> AA
Z3[短路保护] --> AA
AA --> AB[故障锁存]
AB --> AC[状态指示]
AB --> AD[通信上报]
end
style B fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style D fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style F fill:#fff3e0,stroke:#ff9800,stroke-width:2px
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