Abstract : The performance of any machine can be analyzed with reference to parameters like power factor, total harmonic distortion, voltage regulation, etc.

These parameters alter when a machine is subjected to different loads. Depending on the load connected to the system, the voltage and current waveforms are varied.

Due to the effect of harmonics, distortion of waveforms from sinusoidal to non sinusoidal is commonly observed.



The influence of these harmonics could produce various undesirable effects such as the production of oscillating torque, copper and core losses, losses due to skew-leakage fluxes and end-leakage fluxes, overvoltage and excessive currents in the system, etc.

The additional power losses incurred by the harmonics also affect the overall temperature rise and local overheating. This project analyzes these obtained harmonics and develops a suitable filter to minimize them, and by extension, their ill-effects.

It also aims to obtain the voltage regulation of different alternators under varying loads using one of the many methods available, and use this data to compare and contrast the machine performance in different cases.

The case study included seeks to correct the common misconception that a machine with high voltage regulation indicates low performance and cannot be used in practice.

This analysis gives an insight into the practical regulations obtained, and shows a correlation between the voltage regulations obtained and the variation of loads applied.

The proposed harmonic analysis is expected to be useful in the design of harmonic filters, power factor correction devices,
et al.

Please find the following attachments"Investigation of alternators seminar report/pdf/ppt download" here.........