This paper presents the design of a new current controller for a three-level inverter of electric trains using neural networks (NNs). From past experience, the unbalance of DC-link voltage in three-level inverters causes a low power factor and increased harmonics to induction motors of traction vehicles. The proposed current control scheme offers 'tight DC-link voltage balancing' for the inverter along with nonlinear mapping of essential switching patterns and fault tolerance, which are inherent characteristics of NNs. A computer simulation shows that a new current control scheme provides a comparable performance to a conventional sinusoidal pulse-width-modulation (SPWM) control in many aspects.
A new current control scheme for a 3-level inverter using neural networks
1999
3 Seiten, 12 Quellen
Aufsatz (Konferenz)
Englisch
Stromregelung (elektrisch) , Asynchronmotor , Wechselrichter , Eisenbahn , neuronales Netz , Regelungsentwurf , Regelungssimulation , fehlertolerantes System , Rechnersimulation , Schienenverkehr , rechnerunterstützte Regelungsanalyse , Regelungssynthese , Leistungswechselrichter , neuronaler Regler
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