Abstract:
The present work deals essentially with the develop.
sent, design and testing of a new generation solid state d.e* speed controller employing advance techniques of conpariefcm and firing of controlled convertors. The developed scheme employee comparlsi n of phase angle chsrscter$tics of the reference and feedback signals by on extremely versatile and accurate phase comparator which has definite superiority over not only the conventional methods of compartsion but also over the standar-dised types of phase comparators. Another noveilty of the present scheme 3s the use of the pulse width modulation typo of firing scheme for the control of the convertor. The order of accuracy of speed control affected by the present scheme is a whole order of magnitude times nora than that of conventional solid state doe. speed Controller of closed loop type.
