Please use this identifier to cite or link to this item: http://localhost:8081/xmlui/handle/123456789/11338
Authors: P. V., Girinath
Issue Date: 2009
Abstract: Adjustable speed drives are essential for energy savings in industries. Traditionally DC motors have been used for the adjustable speed drives. Now-a-days vector controlled ac drives are replacing the dc drives because ac motors are more robust and need minimum maintenance due to absence of commutators and brushes. Among the ac motors permanent magnet synchronous motors (PMSM) are superior of squirrel cage induction motors for servo applications as it has fast response, higher torque to inertia ratio, higher power density and higher efficiency. Further, the permanent magnet ac motors do not need magnetizing current from stator side. The magnets on rotor are of high resistivity materials thus losses in the rotor are negligible. Due to absence of the squirrel cage, the rotor is lightweight and small in volume. The stator of the PMSM is provided with a sinusoidally distributed three-phase winding and the rotor is fitted with permanent magnet which is chamfered so as to produce sinusoidally distributed magnetic flux in the air gap. Here mathematical modelling of Vector controlled PMSM drive has been developed. The PMSM drive scheme is explained in detail. The drive model consists of an Inverter, vector control block and speed controller. Stator and rotor reference PMSM model equations are also derived. To obtain the rotor reference model the stator quantities of the motor are transformed on to the synchronously rotating reference frame, using Park's transformation. The motor-load system is represented by a set of first order non-linear differential equations. Here efforts have been made to make a comparative analysis between PMSM drive with PI speed controller and Fuzzy speed controller. Major part of my work was referred from the PHD thesis titled "INVESTIGATIONS ON PERMANENT MAGNET SYNCHRONOUS MOTOR DRIVE" by Dr AMAR NATH TI WART.
Other Identifiers: M.Tech
Research Supervisor/ Guide: Srivastava, S. P.
Gupta, S. P.
metadata.dc.type: M.Tech Dessertation
Appears in Collections:MASTERS' THESES (Electrical Engg)

Files in This Item:
File Description SizeFormat 
EEDG14529.pdf2.75 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.