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This paper presents a methodology that can be used to model the electromagnetic behavior of large disk type air-core reactors when excited by fast transient voltages having a frequency content ranging from 10 kHz to 500 kHz. A lumped parameter white-box model is generated using the design details of the reactor. The model parameters are calculated analytically and verified by measurements and finite...
Double Stator Switched Reluctance Machine (DSSRM) is a novel Switched Reluctance Machine (SRM) with two stators and one rotor. This machine benefits from a short magnetic flux path and high power/torque density. DSSRM is a non conventional machine with limited information about heat dissipation which makes thermal analysis an essential stage for this novel machine. This paper using finite element...
We present a scaling model for linear permanent magnet synchronous motors applied to needle-free jet injection, a drug delivery technique that requires the generation of high fluid pressures. This model shows that either the motor stroke or the motor constant can be increased to reduce the electrical power required to perform an injection. We then present computationally efficient semi-analytical...
This paper proposes a novel 6 slot-4 pole axial flux switching permanent magnet machine using dual-rotor single-stator. The analytical method is used to find offset angle to eliminate even harmonics of flux linkage and back-EMF of a conventional 6 slot-4 pole topology. The analytical method is verified with finite element analysis. Proposed novel topology is also compared with a conventional dual-rotor...
Electric and hybrid vehicles continue to demand a share of the automotive market. This movement has been mainly enabled by recent technological improvements in the realm of electric motors, power electronics, and energy storage. While many electric vehicles are on the market, they are not as cost competitive as the conventional vehicles, and this is needed for large-scale market penetration. In order...
This paper presents a mathematical model used to calculate the symmetrical components depending on load current (actual values and phases) in low voltage electrical distribution networks. Based on the mathematical model proposed, transformer losses were evaluated for two windings transformers. Case studies dealt with non-symmetric mode due to load unbalance in the low voltage distribution network...
This paper investigates the performance of a wound rotor induction motor (WRIM) under rotor inter-turn short circuit fault using magnetic equivalent circuit (MEC) and finite elements method (FEM). Impacts of the fault on the signals of the motor including rotor current, stator current, and developed torque of the motor are addressed. Current of short circuit turns signal is considered here. This MEC-based...
Particle Swarm Optimization (PSO) and Genetic Algorithms (GA) are used to minimize the cost of a permanent magnet (PM) synchronous generator with concentrated windings for tidal power applications. With the use of MATLABs global optimization toolbox, it is possible to run several optimization algorithms on the same problem, and to combine the two stochastic solvers GA and PSO with the gradient based...
in this paper is presented a method of modeling the transient phenomena which occur in power transformers winding during lightning impulse voltage test. From the modeling point of view the power transformer winding is without iron core. The equivalent circuit diagram and its parameters (equivalent capacities, self and mutual inductances, conductance and electrical resistances.) are determined using...
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