graph LR
subgraph "航空高压直流输入"
A["270VDC/540VDC \n 航空标准"] --> B["预充继电器"]
B --> C["预充电阻"]
C --> D["母线电容"]
D --> E["主接触器"]
end
subgraph "高压分配开关网络"
F["主分配开关"] --> G["VBM165R08SE \n 650V/8A"]
H["冗余分配开关"] --> I["VBM165R08SE \n 650V/8A"]
J["备份分配开关"] --> K["VBM165R08SE \n 650V/8A"]
end
E --> F
E --> H
E --> J
subgraph "保护与监控"
L["TVS保护阵列"] --> M["电压尖峰吸收"]
N["主动箝位电路"] --> O["快速过压保护"]
P["电流传感器"] --> Q["过流检测"]
R["电压传感器"] --> S["母线电压监测"]
end
G --> T["主功率总线"]
I --> U["冗余总线"]
K --> V["备份总线"]
L --> E
N --> G
P --> G
R --> E
S --> FCU["飞行控制计算机"]
style G fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style I fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style K fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
电推进电机驱动拓扑详图
graph TB
subgraph "三相桥功率级"
A["高压直流输入"] --> B["DC-Link电容"]
B --> C["三相桥臂"]
subgraph "U相桥臂"
U_HIGH["VBFB1402 \n 上管"]
U_LOW["VBFB1402 \n 下管"]
end
subgraph "V相桥臂"
V_HIGH["VBFB1402 \n 上管"]
V_LOW["VBFB1402 \n 下管"]
end
subgraph "W相桥臂"
W_HIGH["VBFB1402 \n 上管"]
W_LOW["VBFB1402 \n 下管"]
end
C --> U_HIGH
C --> U_LOW
C --> V_HIGH
C --> V_LOW
C --> W_HIGH
C --> W_LOW
U_HIGH --> D["U相输出"]
U_LOW --> E["功率地"]
V_HIGH --> F["V相输出"]
V_LOW --> E
W_HIGH --> G["W相输出"]
W_LOW --> E
end
subgraph "栅极驱动与保护"
H["电机控制器 \n FOC算法"] --> I["隔离驱动芯片"]
I --> J["驱动信号"]
subgraph "驱动保护电路"
K["米勒箝位"]
L["有源下拉"]
M["去饱和检测"]
end
J --> U_HIGH
J --> U_LOW
J --> V_HIGH
J --> V_LOW
J --> W_HIGH
J --> W_LOW
K --> U_HIGH
L --> U_LOW
M --> U_HIGH
end
subgraph "输出滤波与连接"
D --> N["输出滤波器"]
F --> N
G --> N
N --> O["电推进电机"]
P["低感RC缓冲"] --> U_HIGH
Q["肖特基续流"] --> U_LOW
end
subgraph "监控与反馈"
R["相电流检测"] --> S["电流反馈"]
T["位置传感器"] --> U["位置反馈"]
V["温度传感器"] --> W["热保护"]
end
S --> H
U --> H
W --> H
style U_HIGH fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style U_LOW fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
智能负载管理拓扑详图
graph LR
subgraph "配电单元(PDU)核心"
A["辅助电源 \n 12V/28V"] --> B["输入滤波"]
B --> C["电压转换"]
subgraph "双路负载开关阵列"
SWITCH1["VBQG4338A \n 通道1-2"]
SWITCH2["VBQG4338A \n 通道3-4"]
SWITCH3["VBQG4338A \n 通道5-6"]
SWITCH4["VBQG4338A \n 通道7-8"]
end
C --> SWITCH1
C --> SWITCH2
C --> SWITCH3
C --> SWITCH4
end
subgraph "飞行阶段负载管理"
D["飞行控制计算机"] --> E["智能优先级逻辑"]
subgraph "飞行阶段逻辑"
F["起飞爬升: \n 优先保障推进/飞控"]
G["巡航: \n 最优效率策略"]
H["故障模式: \n 毫秒级隔离切换"]
end
E --> F
E --> G
E --> H
F --> SWITCH1
G --> SWITCH2
H --> SWITCH3
end
subgraph "负载分类与连接"
SWITCH1 --> I["关键负载: \n 飞控/导航/通信"]
SWITCH2 --> J["重要负载: \n 传感器/作动器"]
SWITCH3 --> K["次要负载: \n 照明/环控"]
SWITCH4 --> L["备份负载: \n 冗余系统"]
I --> M["负载1"]
J --> N["负载2"]
K --> O["负载3"]
L --> P["负载4"]
end
subgraph "保护与诊断"
Q["过流保护"] --> R["快速关断"]
S["温度监测"] --> T["过热保护"]
U["状态反馈"] --> V["健康管理"]
end
Q --> SWITCH1
S --> SWITCH1
U --> SWITCH1
V --> D
style SWITCH1 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
style SWITCH2 fill:#fff3e0,stroke:#ff9800,stroke-width:2px
三级热管理与保护拓扑详图
graph TB
subgraph "三级散热系统"
A["一级: 液冷/强风冷"] --> B["目标: 结温温升<60℃"]
subgraph "一级散热实施"
C["液冷板/风道喉部"]
D["低热阻界面材料"]
E["直接安装MOSFET"]
end
C --> F["电机驱动MOSFET \n VBFB1402"]
B --> F
G["二级: 加固型风冷"] --> H["目标: 结温温升<75℃"]
subgraph "二级散热实施"
I["锁紧散热器"]
J["导流风道"]
K["抗震设计"]
end
I --> L["高压分配MOSFET \n VBM165R08SE"]
H --> L
M["三级: PCB导热"] --> N["目标: 结温温升<40℃"]
subgraph "三级散热实施"
O["厚铜PCB (≥3oz)"]
P["嵌铜块工艺"]
Q["导热过孔阵列"]
R["导热环氧树脂填充"]
end
O --> S["负载管理IC \n VBQG4338A"]
N --> S
end
subgraph "热监控网络"
T["温度传感器网络"] --> U["多传感器数据融合"]
subgraph "传感器布置"
V["MOSFET结温附近"]
W["散热器表面"]
X["PCB热点区域"]
Y["环境温度点"]
end
U --> Z["飞行控制计算机"]
Z --> AA["自适应冷却控制"]
AA --> AB["风扇PWM调节"]
AA --> AC["液冷泵速控制"]
AA --> AD["功率降额策略"]
end
subgraph "电气保护网络"
AE["缓冲与吸收电路"] --> AF["开关节点保护"]
subgraph "保护措施"
AG["RCD缓冲"]
AH["RC吸收"]
AI["肖特基续流"]
AJ["TVS箝位"]
end
AF --> F
AF --> L
AK["故障保护机制"] --> AL["快速响应<1μs"]
subgraph "保护功能"
AM["过流比较器"]
AN["数字锁存"]
AO["故障隔离"]
end
AL --> AP["栅极关断信号"]
AP --> F
AP --> L
end
style F fill:#e3f2fd,stroke:#2196f3,stroke-width:2px
style L fill:#e8f5e8,stroke:#4caf50,stroke-width:2px
style S fill:#fff3e0,stroke:#ff9800,stroke-width:2px
点击下载：VBFB1402规格书
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