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Fault tolerant control for open winding brushless DC motor with power device failure
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Brushless DC motor (BLDCM) is widely used in aerospace equipment. But
the neuter port in conventional BLDCM windings could lead to torque
ripples and low reliability. Each phase winding of the open winding BLDC
is connected to an H-bridge inverter, and its phase voltage and phase
current could be controlled independently, which has a certain fault
tolerance. Firstly, the circuit topology and conduction mode of the
open-winding brushless DC motor are introduced, and a Matlab simulation
model is established according to the mathematical equation of the
motor. Then, the operation characteristics of the open winding brushless
DC motor with power device failure are analyzed, and the characteristics
of two fault-tolerant control methods, compensation and reconstruction,
are discussed. Finally, the open winding brushless DC motor and
controller are processed, and the experimental platform is built to
verify the operation characteristics of the open winding brushless DC
motor with normal operation and compensation operation.
Title: Fault tolerant control for open winding brushless DC motor with power device failure
Description:
Brushless DC motor (BLDCM) is widely used in aerospace equipment.
But
the neuter port in conventional BLDCM windings could lead to torque
ripples and low reliability.
Each phase winding of the open winding BLDC
is connected to an H-bridge inverter, and its phase voltage and phase
current could be controlled independently, which has a certain fault
tolerance.
Firstly, the circuit topology and conduction mode of the
open-winding brushless DC motor are introduced, and a Matlab simulation
model is established according to the mathematical equation of the
motor.
Then, the operation characteristics of the open winding brushless
DC motor with power device failure are analyzed, and the characteristics
of two fault-tolerant control methods, compensation and reconstruction,
are discussed.
Finally, the open winding brushless DC motor and
controller are processed, and the experimental platform is built to
verify the operation characteristics of the open winding brushless DC
motor with normal operation and compensation operation.
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