Indirect field oriented control of an unbalanced nine-phase induction motor due to open phases
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Universidade Federal de Minas Gerais
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Multiphase machines have several advantages when compared to three-phase machines. Their inherently higher reliability makes them attractive in several applications. For instance, the nine-phase motor can operate with up to six open phases in its stator. However, in order to allow the multiphase machine to work magnetically balanced even in open phase conditions, an adequate current control can be employed. To develop this control scheme, it is necessary a synchronous-frame modeling of a nine-phase induction motor (9PIM) under open phase faults, which is developed here. Using it, indirect field oriented control is derived, still using proportional controllers in the current loops. This is possible due to the use of an appropriate voltage decoupling considering the fault condition. Hence, the unbalanced multiphase induction motor can be controlled very similarly as a balanced one, additionally resulting in torque ripple minimization. Simulation results show the success of the proposed control scheme.
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Máquinas elétricas de indução, Rotores
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Stators , Induction motors , Rotors , Mathematical model , Couplings , Torque , Synchronous motors, Multiphase Machines , Induction Machines , Open-circuit faults , Indirect field-oriented control , modeling, Motor Control , Open Phase , Induction Motor , Control Of Induction Motor , Nine-phase Induction , Current Control , Current Loop , Proportional Control , Torque Ripple , Reference Frame , Square Wave , Coupling Coefficient , Speed Control , Voltage Ripple , Flux Linkage , Back Electromotive Force , Synchronous Frame , Stator Current , Metal Industry , Stator Voltage , Synchronous Reference Frame , Rotor Flux , Stator Flux , Stationary Reference Frame , Magnetomotive Force , Three-phase Motor , Torque Response , AC Component , Machine Model
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https://ieeexplore.ieee.org/document/8544515