The electrical machine using induced excitation system is a kind of brushless self-excited machine with low cost and high reliability, the induced excited machine would provide high power density at high-speed. But the low efficiency of the excitation system limits the development of this kind machine. Based on traditional excitation system, an improved construction induced excitation system is...

This paper presents a design improvisation of a flux pump-integrated 10 kW high-temperature superconducting (HTS) proof of concept generator for reduced harmonic distortion. To carry out the design improvisation, a finite element analysis (FEA) model of the 10 kW HTS generator is developed, and time-stepped magnetic transient simulations are conducted on the 2D model. The effects of stator yoke...

The need of higher power and more reliable applications have promoted the use multiphase alternating current (AC) drives. Mostly motors are used in wide speed operation range. To control motors, low region operated under pulse width modulation (PWM) mode high region, they square wave mode. In this paper, ripple characteristics inverter-fed multiple three-phase AC that dual (PWM modes) investiga...

An urgent task for many enterprises of the petrochemical and fuel energy complex, using pumps, fans compressors in their technological processes, is to increase speed rotation these turbomechanisms. such mechanisms due an productivity. Quite often, obtaining increased both automation devices special equipment.
 
 The purpose study analyze possibility building synchronous motors with a...

In this paper, a novel voltage control strategy of stand-alone operation brushless doubly 9 fed induction generator for variable speed constant frequency wind energy conversion systems 10 was presented and discussed particularly. Based on the model of the generator power system, the 11 proposed direct flux control strategy employs a nonlinear reduced-order generalized integrator 12 based resona...

A dual mover yokeless multi-tooth (DMYMT) permanent magnet flux switching motor (PM-FSM) design is presented in this article for ropeless elevator applications. The excitation sources, including a field winding and magnet, are on the short proposed structure, whereas stator simple slotted iron core, thus reducing vertical transportation system cost. operational principle of DMYMT PM-FSM introdu...

This paper presents an intelligent fault detection based on adaptive continuous wavelet transform of broken rotor bars for Induction Motor (IM). Broken rotor bars, bearing decay, eccentricity, as motor faults appears as different frequencies in the stator current signals. The stator current and speed signals at deferent operation conditions obtained from the winding function are analysed throug...

Concepts for sensorless position control of induction motor drives rely on anisotropic properties of the machine rotor. The built-in spatial anisotropy is detected by injecting a high-frequency flux wave into the stator. The resulting stator current harmonics contain frequency components that depend on the rotor position. Models of the rotor saliency serve to extract the rotor position signal u...

Two different nonlinear dynamic control algorithms are presented for synchronous motors with damping windings: (i) an adaptive speed-sensorless controller for rotor position tracking in the presence of unknown constant load torque, on the basis of rotor angle, stator and field windings currents measurements; (ii) an adaptive control law for rotor speed tracking in the presence of uncertain cons...