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A novel approach of fixed joint multi-motor power balance control

Considering mandatory synchronization and torque coupling among motors with fixed joint, taking into account the influences of manufacturing errors, outside interference and electrical parameters drift on the inductive motor properties, this paper presents a novel multi-motor power balance control approach based on multi-DTC and online parameter identification. Speed control with torque balance of fixed joint multi-motor is realized, which prevent individual motor from overload. These motors with joint fault can be diagnosed and shutoff. Online self-adaptive identification of motor parameters improves DTC control accuracy and performance. In Matlab / Simulink environment, the model of fixed joint multi-motor speed and power balance control is built. Simulation is conducted under different working states. Simulation results verify that the proposed approach is valid to the fixed joint multi-motor driving system.