Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/16450
Title: Investigations on current control and speed control of VSI CSI fed permanent magnet brushless dc motor
Researcher: Karthikeyan J
Guide(s): Dhanasekaran R
Keywords: Current control
Electrical engineering
Magnet brushless DC motor
Speed control
Upload Date: 27-Feb-2014
University: Anna University
Completed Date: 01/12/2012
Abstract: Permanent magnet Brushless DC motor drives are being employed in newlinemany variable speed applications due to their high efficiency, silent operation, newlinecompact size, high reliability, ease of control and low maintenance newlinerequirements. The main aim of this research is to reduce the switching losses, newlinevalue of Inductance, Current ripples, cost and also to improve the dynamic newlineperformance of the BLDC motor drive system. These goals have been met by newlineusing Current control methodology, Resonant DC link voltage method, Power newlinefactor correction converter, careful component design of a converter in the newlineBLDC motor drive system. In this research there are four main objectives, the first being is to build newlinea simple current controlled modulation technique for Brushless DC motor newlineusing common DC signal. This current controlled technique is based on the newlinegeneration of quasi- square wave currents using only one controller for the newlinethree phases. The equivalent DC current is obtained through the sensing of the newlinearmature currents of a BLDC motor. These currents are rectified and DC newlinecomponent is then used to drive the BLDC motor. The advantages of this newlinetechnique are: (a) The DC link current measurement is not required (b) Phase newlineover currents are eliminated, then by controlling the torque and speed can be adjusted for a wide range. The second main task is to reduce the high device newlinevoltage stress and large DC link voltage ripples in the BLDC motor drive newlinesystem. This work presents a transformer based Resonant DC link inverter for newlinebrushless DC motor. DC link voltage notches during chopping switches newlinecommutation for all the switches working in zero voltage switching condition. newlineAs the switching frequency is high in this inverter, the switching acoustic newlinenoise can be eliminated. Only one DC link voltage notch is needed during one newlinePWM cycle and the switching frequency of the auxiliary switches would not newlinehigher than the PWM frequency.
Pagination: xxiii, 176p.
URI: http://hdl.handle.net/10603/16450
Appears in Departments:Faculty of Electrical and Electronics Engineering

Files in This Item:
File Description SizeFormat 
01_title.pdfAttached File107.49 kBAdobe PDFView/Open
02_certificates.pdf515.15 kBAdobe PDFView/Open
03_abstract.pdf21.17 kBAdobe PDFView/Open
04_acknowledgement.pdf82.39 kBAdobe PDFView/Open
05_contents.pdf67.96 kBAdobe PDFView/Open
06_chapter 1.pdf143.49 kBAdobe PDFView/Open
07_chapter 2.pdf747.67 kBAdobe PDFView/Open
08_chapter 3.pdf1.92 MBAdobe PDFView/Open
09_chapter 4.pdf1.43 MBAdobe PDFView/Open
10_chapter 5.pdf113.36 kBAdobe PDFView/Open
11_chapter 6.pdf172.36 kBAdobe PDFView/Open
12_chapter 7.pdf58.91 kBAdobe PDFView/Open
13_appendix.pdf82.9 kBAdobe PDFView/Open
14_references.pdf52.9 kBAdobe PDFView/Open
15_publications.pdf23.57 kBAdobe PDFView/Open
16_vitae.pdf20.61 kBAdobe PDFView/Open


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