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This paper presents a comprehensive review for short circuit fault in electrical motors particularly PMSM. First different factors leading to this fault, such as various stresses on the motors, are proposed; then different fault diagnosis methods in induction motors, permanent magnet motors and brush-less dc motors are proposed. Advantages and drawbacks of these fault diagnosis techniques related...
This paper reports the optimization process of a MW-size, medium voltage, squirrel cage induction motor for industrial applications. Starting from an existing construction, the aim of the optimization is to maximize the induction machine power density, while fulfilling high demanding, specific international Oil&Gas industry regulations. For every considered design, the motor performance is estimated...
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...
This paper presents an overview of methodology for usage of mathematical optimization procedures e.g. optimization algorithms to achieve optimal design of an electrical machine. A special care must be taken in order to handle parameter definition, boundary constraints, constraint functions, model feasibility and computationally expensive calculation such as finite element analysis. Variants of workflows...
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...
PMSM applications in high-performance control, with or without sensors, involve well self-tuning of the controllers and observers to machine parameters with off/on-line identifications for “plug-in” controllers. This paper proposed self-commissioning methods to automatic identify the PMSM electrical parameters (stator resistance, dq-inductances and PM flux) in sensorless drives, sometimes the rotor...
This paper proposes a dual-rotor brushless direct-current motor design specifically realized for unmanned underwater vehicles. Brushless DC motors are known for their high torque capacity and power density specs which are also suitable for underwater drive trains known as “thrusters”. Proposed brushless DC motor model having double rotor and double stator structure is basically designed by applying...
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...
This paper investigates two topologies of ferrite-permanent-magnet synchronous machines for use as direct-driven generators in micro-wind power applications, i.e. the axial-flux double-sided inner-stator permanent-magnet (AF-PM) generator and the radial-flux spoke-type interior-permanent-magnet (RF-IPM) generator. The comparative design analysis of AF-PM and RF-IPM micro-wind generators based on finite-element...
This paper deals with the comparison of two different switched reluctance motors (SRM) designs and their losses and efficiencies from point of view of their using in electrical car. The first is an optimized three phase 18/12 SRM with concentrated windings and the second one is a new concept of SRM with segmented stator 12/8 SSRM. The design both of them is carried out on the base of analytical methods,...
Traction drives comprise all major challenges to electrical drive systems: High power, large torque, widely varying speed, fast dynamic reaction, compact design, high efficiency and robustness are some of the key aspects. Power-electronic devices feed the selected electric motor - their characteristics influence the design of the control by defining boundaries via maximum voltage, current and switching...
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