On the Use of Large-Size Flash-Memories in Digital Control of Power Converters"

Dorin O. Neacsu

Associate Professor, Technical University of Iasi, Romania

Visiting Associate Professor, Northeastern University, Boston, USA

                                                                                                                                                                                                                               

This seminar investigates the use of a very large flash memory to the design of a three-­‐phase PWM generator and describes the hardware and software used for implementation.  The technology and the use of flash memory technology is first introduced.  The digital architecture proposed for implementation of a PWM generator differs from conventional counter-­‐based implementation and it follows a pre-­‐programmed optimal PWM pattern that is read from memory with magnitude and phase as coordinates.  This architecture allows the inclusion of multiple optimization criteria within the PWM pattern.  Experimental results are shown with a aPICDEM PIC18 Explorer Board and a SD Card Reader PICtail Daughter Board, both from Microchip.  The optimal PWM pattern is defined in MATLAB and the entire design process is described in the paper.  Finally a review of other possible applications of flash memories in power converters is opening the floor for discussions.

                                                                                                                                                                                                                               

Dorin O.  Neacsu (IEEE M’95, SM’00) received the MS and PhD degrees in electronics from the Technical University of Iasi, Iasi, Romania, in 1988 and 1994, respectively.  Dr.  Neacsu also holds a MSc degree in Engineering Management from Tufts University.  Dr.  Neacsu was involved with TAGCM-­‐SUT Iasi, Romania from 1988 to 1990, and with the faculty at Department of Electronics, Technical University of Iasi, between 1990 and 1999.  During this time, he held visiting positions at Universite du Quebec a Trois Rivieres, Canada, and General Motors/Delphi, Indianapolis.  Dr.  Neacsu was involved in US industry from August 1999 to June 2006, at International Rectifier, SatCon Technology, and Azure Dynamics/Solectria.  This led to innovative work in advanced gate drivers, isochronous hot-swap paralleling of three-­‐phase power converters, and interleaved power converters.  After August 2006, Dr.Neacsu was involved with diverse US academia's activities at University of New Orleans, Massachusetts Institute of Technology, and United Technologies Research Center. Dr.Neacsu is currently with Technical University of Iasi, Romania. Dr.  Neacsu has published around 90 papers and research notes, has presented 7 tutorials at IEEE conferences, holds 3 US patents, published a book entitled “Power-Switching Converters – Medium and High Power”, available at CRC Press/Taylor and Francis since 2006, with a second edition in December 2013.  Other ISBN books or college textbooks published in USA, Canada, and Romania.  Associate Editor IEEE IES Magazine, Leader of the Sub-­‐ Committee for Inverters and Rectifiers of IES, Associate Guest-‐Editor of IEEE Transactions in Power Electronics.

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