The Solution of Directed D-Axis Current for the Bearingless Induction Motors

Abstract:

The control of nonlinear decoupling between the electromagnetic torque and radial levitation force is the key of the stable suspend operation of bearingless induction motor. An optimized algorithm for stator flux oriented control with direct solution of d-axis current is proposed. This method overcomes the problems that the conventional stator flux oriented control which must work with decouple regulator and is influenced by time-delay of decouple regulator. The control of suspend model imports the feedback control of unilateral magnetic-force to reduce the errors about the delay and interference of system. The simulation results show that the motor has excellent dynamic performance and stability.

• Periodical: Advanced Materials Research (Volumes 779-780)
• Pages: 711-715
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.779-780.711
• Online since: September 2013
• Authors: Yan Jun Yu, Xian Xing Liu
• Keywords: Bearingless Induction Motors, Solution of Directed D-Axis Current, Stator Flux Oriented

References

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