Asynchronous Generators with Dynamic Slip Control

This paper presents various systems fordynamic slip control of wound-rotor asynchronousgenerators. Particular systems are presented here andcompared to each other. This paper thus yields acomprehensive overview of systems for converting windenergy to electrical energy using asynchronous generatorswith slip control

Design, Modelling and simulation of two-phase twostage electronic system with orthogonal output for supplying of two-phase asm

This paper deals with the two-stage two-phase electronic systems with orthogonal output voltages and currents - DC/AC/AC. Design of two-stage DC/AC/AC high frequency converter with two-phase orthogonal output using single-phase matrix converter is also introduced. Output voltages of them are strongly nonharmonic ones, so they must be pulse-modulated due to requested nearly sinusoidal currents with low total harmonic distortion. Simulation experiment results of matrix converter for both steady and transient states for IM motors are given in the paper, also experimental verification under R-L load, so far. The simulation results confirm a very good time-waveform of the phase current and the system seems to be suitable for low-cost application in automotive/aerospace industries and application with high frequency voltage sources

Effect of Permanent Magnet Rotor Design on PMSM Properties

The paper is focused on the permanentmagnet location and shape investigation in PMSM. At first,the real PMSM has been modeled by means of FEM whichhas been verified by experiments. Next step was a creatingof two new models with different position of PM: one withsurface mounted PM and other one with inset PM. The PMvolume and quality have been in all models kept constant .The main goal of this paper is to investigate the influence ofthe PM design on PMSM properties such as torque ripple,maximum torque, EMF, stator current and winding losses.The investigation has shown, that PM surface design canimprove PMSM properties