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In the paper the analysis of the Fault Tolerant Control (FTC) of Induction Motor drive system is presented. The Direct Field Oriented Control was used for analysis the speed sensor faults detection systems based on the simple mathematical relationship with two types of the rotor speed estimators. In the diagnostic systems and in the post faulted conditions the MRASCC and NFO observers were used. Simulation...
In the paper the concept of the novel speed and rotor flux observer with additional stator and rotor resistance estimator is presented. System is checked from the safety point of view and possibility of the application in the Fault Tolerant Control (FTC) systems. Simulation are performed in the Direct Field Oriented Control (DFOC). As a based speed estimator the MRASCC was used. Influence of the stator...
In the paper the new concept of the Permanent Magnet Synchronous Machine (PMSM) is presented. This machine is based on classic construction of induction motor (IM). Parameterization and sweep analysis of the rotor geometry was done using the finite element analysis (FEA) software. Based on this analysis, one case was chosen and manufactured. In the paper the analysis of the new concept of the Permanent...
The paper deals with the fault tolerant Direct Field Oriented Control (DFOC) of an induction motor drive. Influence of the stator current sensor faults to the properties of the DFOC drive system is presented. To the current sensor fault detection the simple algorithmic/logical mechanism, based on the measured currents is used. After the fault detection, drive topology is changed. For the calculation...
The paper deals with the fault tolerant Direct Field Oriented Control of an induction motor drive. Influence of the stator current sensor general failures to the properties of the drive system is presented. To the sensor fault detection the artificial neural network approach is proposed. After the fault detection, drive topology is changed based on the sensor or control topology redundancy. Drive...
In this paper the Fault Tolerant (FTC) vector controlled induction motor drive system (Direct Torque Control — DTC-SVM) is described and tested during different drive conditions. Influence of the incremental rotor speed sensor faults to the properties of the analyzed drive is tested. Faults detection algorithm is developed and presented. The control structure is modified by adaptive system in the...
In the paper a comparative analysis of the two detectors of the rotor speed sensor faults are presented. The first one is based on the MRAS estimator (Model Reference Adaptive System) and the second one is based on artificial neural network. Performance analysis of each identification and detection system in different operation conditions in the Direct Field Oriented Control structure DFOC is presented...
The paper deals with the fault tolerant Direct Torque Control of an induction motor drive. Influence of the speed sensor faults to the properties of the DTC-SVM drive system is presented. Control structure with and without outer speed control loop is analyzed. Simple algorithmic mechanism of the speed sensor fault detection is described. During the faulted conditions vector controlled drive is switched...
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