Robust control of synchronous motor through AC/DC/AC converters

The problem of controlling synchronous motors, driven through AC/DC rectifiers and DC/AC inverters is addressed. The control objectives are threefold: (i) forcing the motor speed to track a varying reference signal in presence of motor parameter uncertainties; (ii) regulating the DC Link voltage; (i...

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Bibliographic Details
Published in:Control engineering practice 2010-05, Vol.18 (5), p.540-553
Main Authors: El Magri, A., Giri, F., Abouloifa, A., Chaoui, F.Z.
Format: Article
Language:English
Subjects:
A C motors
A.c. Machines
Applied sciences
Asymptotic properties
Average analysis
D.c. Machines
DC–AC inverter
Direct current
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Exact sciences and technology
Mathematical models
Motors
Nonlinear control
Nonlinearity
Parameter uncertainty
Power factor correction
Power networks and lines
Regulation and control
Synchronous motor
Synchronous motors
Theory. Simulation
Uncertainty
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Summary:The problem of controlling synchronous motors, driven through AC/DC rectifiers and DC/AC inverters is addressed. The control objectives are threefold: (i) forcing the motor speed to track a varying reference signal in presence of motor parameter uncertainties; (ii) regulating the DC Link voltage; (iii) assuring a satisfactory power factor correction (PFC) with respect to the power supply net. First, a nonlinear model of the whole controlled system is developed in the Park-coordinates. Then, a robust nonlinear controller is synthesized using the damping function version of the backstepping design technique. A formal analysis based on Lyapunov stability and average theory is developed to describe the control system performances. Despite parameter uncertainties, all control objectives are proved to be asymptotically achieved up to unavoidable but small harmonic errors (ripples).
ISSN:0967-0661
1873-6939
DOI:10.1016/j.conengprac.2010.02.005