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dc.description.abstractPermanent magnet brushless DC (PMBLDC) motors are the latest choice of researchers due to their high efficiency, silent operation, compact size, high reliability and low maintenance requirements. The objective of the present work is to control the speed of the PMBLDC motor without position sensor (Sensorless Control). There are two types of sensorless speed control techniques available in literature. The first type is position sensing using back EMF of the motor and the second one is position estimation using motor parameters. In the second type, rotor position is estimated from the stator voltage and stator current signals. Accordingly, the main contributions of this work are Digital Simulation of PMBLDC Motor Drive with Power Factor Correction by identifying suitable filter for three phase inverter; Speed control by varying the input voltage of the Inverter in the presence of sensor; Speed control by varying the input voltage of the Inverter by sensorless method; Speed control by varying the commutation using gate control method; Speed control by varying the commutation using Space Vector Modulation; Comparing the performance of various controllers and hence identify the most suitable method of speed control;Real time implementation of sensor and sensorless speed control for PMBLDC motor, using PI and FLC scheme. The chapter1 deals with introduction and literature survey. The second chapter deals with voltage control method to control the speed of the PMBLDC motor using PI controller and Fuzzy logic controller (FLC) with Hall sensor. In the third chapter a suitable filter is identified for a three phase inverter to obtain the inverter output with less Total Harmonic Distortion (THD) and improved Power factor. From the quantitative analysis, the rms line current is increased by three times in SVM technique. From the FFT analysis it is observed that SVM generates less THD (0.2897) in the output voltage. newlineen_US
dc.format.extentxxv, 156en_US
dc.titlePosition sensorless speed control of permanent magnet brushless DC motoren_US
dc.creator.researcherNarmadha T Ven_US
dc.subject.keywordSensorless speed control, permanent magnet brushless DC, digital simulation, voltage, space vector modulationen_US
dc.description.noteAppendix 1; pp.138-144en_US
dc.contributor.guideThyagarajan, T.en_US
dc.publisher.universityAnna Universityen_US
dc.publisher.institutionFaculty of Electrical and Electronics Engineeringen_US, April 2011en_US
dc.format.dimensions23.5 cm x 15 cmen_US
Appears in Departments:Faculty of Electrical and Electronics Engineering

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01_title.pdfAttached File49.35 kBAdobe PDFView/Open
02_certificates.pdf850.31 kBAdobe PDFView/Open
03_abstract.pdf21.9 kBAdobe PDFView/Open
04_acknowledgement.pdf14.03 kBAdobe PDFView/Open
05_contents.pdf61.14 kBAdobe PDFView/Open
06_chapter 1.pdf96.69 kBAdobe PDFView/Open
07_chapter 2.pdf267.81 kBAdobe PDFView/Open
08_chapter 3.pdf288.23 kBAdobe PDFView/Open
09_chapter 4.pdf1.41 MBAdobe PDFView/Open
10_chapter 5.pdf881.8 kBAdobe PDFView/Open
11_chapter 6.pdf20.77 kBAdobe PDFView/Open
12_appendix 1.pdf29.32 kBAdobe PDFView/Open
13_referneces.pdf37.97 kBAdobe PDFView/Open
14_publications.pdf16.5 kBAdobe PDFView/Open
15_vitae.pdf10.98 kBAdobe PDFView/Open

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