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The predictive strategy is a promising alternative to control matrix converters and due to its simplicity and flexibility to include additional aspects in the control, its implementation can be extended to different topologies and industrial applications. This paper presents an overview of the predictive control principles applied to matrix converters and other derived topologies including cascade...
The fault detection and diagnosis in electrical motors is a topic of increasing interest in the field of highly reliable and fault-tolerant measurement and control systems. This paper focuses on inter-turn short circuit fault diagnosis in stator windings of a Permanent magnet synchronous motor (PMSM). A multilayer artificial neural network (MANN) has been used for diagnosis and classification of different...
This paper presents a new Direct Virtual Torque control (DVTC) for synchronization and grid connection of Doubly Fed Induction Generator (DFIG). DFIG is linked to the grid within the stator and rotor is fed by an Indirect Matrix Converter (IMC). Function of IMC is similar to the direct one, although it has the line and load bridges separated. IMC has low volume compare to conventional back to back...
This paper presents two new methods of online estimation for the rotor time constant of the induction motor for indirect vector control drives. These methods are presented using artificial neural networks with steepest descent back propagation training algorithm and recursive least square algorithm. These methods use measurements of the stator voltages, stator currents and the rotor speed. The problem...
In this paper two methods of torque control for induction motor have been investigated. First, DTC method is implemented by using complete voltage vectors of the matrix converter. Second, an improved predictive torque control is developed and performed with two-level inverter. In the proposed predictive control the next torque and flux are predicted by discrete model of motor and inverter. Afterward...
This paper compares voltage gain of control methods for the Z-source inverter under a given boost factor. The control methods of the Z-source inverter are simple boost control, maximum boost control and maximum constant boost control respectively. The Z-source inverter advantageously utilizes the shoot-through switching states besides active and zero states. The Z-source network makes the shoot-through...
This paper presents a sensorless predictive torque control. The predictive torque control is based on pre-calculation of the best switching state in order to keep the state variables close to desired values. The control scheme uses a proportional-integral controller inside of predictive control in order to improve the steady state response. The stator flux that determines the stator voltage is pre-calculated...
The permanent magnet synchronous motor (PMSM) is very useful in applications. Vector control of PMSM is popular kind of its control. In this paper, at first an optimal vector control for PMSM is designed and then the results are compared with conventional vector control. Then, we assumed that the measurements are noisy and linear quadratic Gaussian (LQG) methodology is used to filter the noise. The...
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