A braking logic transformation circuit is proposed to address the safety hazards of some brands of in-service units being unable to reliably shut down in the event of emergency shutdown,where the high-speed shaft brake is locked and the air brake fails.Firstly,a parallel overspeed detection circuit is connect-ed to the high-speed shaft braking circuit.When the unit is detected to be over speed,the high-speed shaft brake is in a released state.Subsequently,the overspeed detection circuit is connected in parallel in the yaw brake caliper braking circuit and yaw action circuit.When the unit overspeed is detected,the yaw caliper is in a released state,and the unit automatically enters a crosswind yaw braking state.The brake logic modifica-tion circuit takes into account the shortcomings of unreasonable high-speed axle braking and insufficient air braking capacity,and optimizes the original brake logic circuit.On-site verification shows that the modified braking circuit plays an important protective role in the safe and reliable shutdown of the unit.
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