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Electrical propulsion is gaining popularity in the marine industry, because of its good energy management and better dynamic performance. An azimuth thruster driven by an electric motor is a common configuration found in modern electric propulsion systems. In recent years failures relating to bevel gears and bearings in azimuth thruster drive train failures were reported in the marine industry. The...
Induction motors are presently used in many electric vehicle applications. As a result, their control methods have received a lot of attention. One of the efficient method of induction motor control is the direct torque control (DTC). In this paper, a design method for direct torque control of induction motor has been developed. A Verilog hardware description language is used to implement the developed...
In this paper, a model reference adaptive system (MRAS) speed estimator for speed sensorless indirect field oriented control (IFOC) of an induction motor drive (IMD) using fuzzy logic controller (FLC) is implemented to replace the conventional constant gain proportional-integral-controller (PIC). Firstly, the MRAS speed sensor for IFOC of an IMD is implemented using PIC. The PIC offers satisfactory...
Wound Rotor Induction Machine (WRIM) is used in various motoring and generating applications. Control of this machine from rotor side improves the operating speed and reduces the rating as well as cost of converter. The method proposed in this paper is field oriented control of WRIM with single current sensor. Rotor reference currents of current controllers are used for estimating the un-sensed rotor...
In recent days PMSM drives are becoming more popular. Because of their quick response and accuracy of the vector control technique, vector controlled PMSM drives are good option for many applications. This work mainly deals with design and hardware implementation of vector controlled PMSM drive using dsPIC30F6010A controller. In order to complete the drive, field weakening region is also included...
This paper presents an improved dynamic model with incorporating the saturation effects for an induction motor (IM). The improved model is simulated with MAT-LAB/SIMULINK software for transient response in terms of electromagnetic torque, rotor speed and stator current at no-load and on-load. The obtained simulated results provide a clear evidence that the conventional unsaturated model fails to predict...
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