A new and improved control of a power electronic converter for stabilizing a variable speed generation system using an embedded microcontroller Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/h128nj05v

Descriptions

Attribute NameValues
Creator
Abstract or Summary
  • A new and improved stabilizer was developed for the variable speed generation (VSG) system. The VSG system exhibits periodic oscillations which sometimes leads to a loss of synchronism. After careful study, a simple but effective strategy to stabilize the system was implemented with real time digital feedback control. The VSG system consists of an engine, which is the prime mover, driving a doubly fed machine (DFM), which is the generator. The stator of the DFM is directly connected to the grid while the rotor is connected to the grid through a power electronic converter. The converter used in this study is a series resonance converter (SRC), but the proposed method may also be applied to other kinds of converters. The stabilizer senses the RPM of the engine, the feedback signal, and controls the rotor current amplitude and frequency of the doubly fed machine. Control was implemented using the 80C196KB microcontroller. The software consists of a mix of "C" and assembly language. Speed being an important factor in the implementation, care was taken to minimize the control loop times. The important features of the hardware and software developed for the stabilizer are: (1) 12 MHz controller board (2) Real time digital band pass filter (3) Instantaneous rotor speed measurement (4) Interrupt driven measurement and control loops (5) User defined setup parameters (6) IBM PC based real time serial communication The performance of the VSG system was studied with and without the stabilizer. A significant improvement in the stability of the system was noticed over the entire region of operation.
Resource Type
Date Available
Date Copyright
Date Issued
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Academic Affiliation
Non-Academic Affiliation
Subject
Rights Statement
Peer Reviewed
Language
Digitization Specifications
  • File scanned at 300 ppi (Monochrome) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 5.0 was used for pdf compression and textual OCR.
Replaces
Additional Information
  • description.provenance : Submitted by Kaylee Patterson (kdpscanner@gmail.com) on 2013-03-20T21:09:49Z No. of bitstreams: 1 VenkatswamySuresh1991.pdf: 6570711 bytes, checksum: 8423edd1833acdadb0b49b381678c3ee (MD5)
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-03-21T17:14:42Z (GMT) No. of bitstreams: 1 VenkatswamySuresh1991.pdf: 6570711 bytes, checksum: 8423edd1833acdadb0b49b381678c3ee (MD5)
  • description.provenance : Made available in DSpace on 2013-03-21T17:14:42Z (GMT). No. of bitstreams: 1 VenkatswamySuresh1991.pdf: 6570711 bytes, checksum: 8423edd1833acdadb0b49b381678c3ee (MD5) Previous issue date: 1991-05-03
  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2013-03-21T17:13:55Z (GMT) No. of bitstreams: 1 VenkatswamySuresh1991.pdf: 6570711 bytes, checksum: 8423edd1833acdadb0b49b381678c3ee (MD5)

Relationships

Parents:

This work has no parents.

Last modified

Downloadable Content

Download PDF

Items