Fault tolerant topology structure of high-speed rotor inverter of magnetic suspension control torque gyroscope
A technology for controlling torque gyroscopes and high-speed rotors, which is applied in fields such as excitation or armature current control, control systems, and motor control. Achieve the effects of avoiding fault isolation and system reconfiguration time increase, improving system reliability, and consistent topology
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[0020] Such as figure 1 As shown, the present invention includes a regulated DC power supply 1, a Buck DC-DC converter with redundant power tube 2, a fault protection circuit 3, a four-leg phase redundant inverter 4, a small armature inductance permanent magnet brushless The DC motor 5, the stabilized DC power supply 1 passes through the Buck DC-DC converter 2 with redundant power tube, and is connected to the four-leg phase redundant inverter 4 to drive the small armature inductance permanent magnet brushless DC motor 5. At the same time , A fault protection circuit 3 is added between the Buck DC-DC converter with redundant power tube 2 and the four-leg phase redundant inverter 4 to realize isolation protection after a fault; Buck DC- with redundant power tube The DC converter 2 is composed of the main Buck DC-DC converter 11, the redundant MOSFET tube 10 and the Buck power tube failover circuit 9. After the MOSFET Q7 fails, the Buck power tube failover circuit 9 performs the ...
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