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Modeling of Permanent Magnet Synchronous Motors (PMSM) is required for the mathematical representation of the machine in order to analyze the behaviour of the machine under different operating conditions. This paper gives a detailed study of various fault modeling methods of PMSMs and their comparison in terms of accuracy and computational time. Based on a thorough review, the fault modeling methods...
In DC microgrids, effective power management in real time is important for optimum management of energy, resources, storage elements and loads. Power imbalance in the grid may also lead to fluctuation of grid voltage, which will adversely affect the reliability of the microgrid and may damage the loads. In this paper, different strategies for power management in the DC microgrids will be classified...
The first dual multilevel converter (MLC) topology for medium-voltage (MV) open-end stator winding induction motor (OESW-IM) drives was proposed in 1990s. Till now, MLC topologies to generate three-level, five-level, seven-level, and nine-level voltage waveforms for OESW-IM drives have been proposed. This paper proposes a new topology for OESW-IM drives based on modular multilevel converter (MMC)...
Brushless Direct Current (BLDC) motors are increasingly being used in industrial applications and electric vehicles. In order to design and control the machine for high dynamic performance, as well as for real-time fault diagnosis of the BLDC drives, analytical modeling is often the first step. This paper presents a survey of different ways of modeling and analysis of BLDC motors along with their...
For applications such as electric traction where the need for speed synchronization is not stringent, single-inverter multi-machine induction motor drives offer significant reduction in cost, size and weight. The machines are nominally identical and share the load equally, however during operation, a fault may develop in one or more machines. This paper discusses the effects of stator fault in one...
Multi-machine, single-inverter induction motor drives are attractive in situations in which all machines are of similar ratings, and operate at approximately the same load torques. The advantages include small size compared to multi-inverter system, lower weight and overall cost. However, field oriented control of such drives is a challenge since no two motors will have exactly the same operating...
Power failure ride-through capability is an essential feature of adjustable speed drives to avoid production loss due to momentary power failure. Field oriented controlled induction motor drives are one of the ideal choices for implementing the ride-through capability due to their fast torque dynamics. This paper deals with implementation of the power failure ride-through capability in multi-machine...
The Euler numerical integration method is used very commonly to solve the dynamic equations of the induction machine in real-time on digital processors. The need to solve the machine model also arises in real-time hardware-in-loop simulations, and in electric load emulation. The Euler method is often preferred in such applications due to its fast, simple single-step, explicit nature. However, Euler...
This paper is concerned with the interactions between the induction motors of a single-inverter, two-machine field-oriented drive system. The machine interactions considered here are those through the field oriented controller. The paper considers a multi-machine field-oriented controller that is based on a machine model which is the average of the models of the two machines. Interactions that occur...
This paper is concerned with the controller-driven interactions between the induction motors of a single-inverter, two-machine direct torque controlled drive system. The main control strategies used for such a drive system are the Master-slave (MS) control and the Mean control. The performance of these control methods can get affected by the inherent asymmetries in the induction machines. A commonly...
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