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Paper describes an online diagnostic and control unit which can control, diagnose and partially do the prognosis of EV drive. For the EV drive control is used a vector control. Methods of processing the variables are based on fault analysis of rotating systems according frequencies at current spectra of EV induction motor. Moreover, unit can detect short circuits and monitor a partial discharge activity...
Incipient fault detection and isolation (FDI) in the current sensors of a controlled induction motor is addressed by an original diagnosis system based exclusively on the three-phase signals model. In this way we avoid a reduction in the performance of the FDI system due to the uncertainty in the machine model. Assuming that the three current signals are measured, the proposed FDI system is made of...
This paper presents analysis of closed loop and sensorless control of induction machine with broken rotor bar for on-line diagnostics purposes. Closed loop control system synthesis of induction motor is based on symmetrical model of the machine. In case of induction machine operation with broken rotor bars, rotor speed pulsation is compensated by the control system. Simulation of multiscalar control...
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