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Field oriented control of induction motorsInduction motors have always been known for their simple rugged construction, but until lately were not suitable for variable speed or servo drives due to the inherent complexity of the controls. With the advent of field oriented control (FOC), however, the induction motor has become an attractive option for these types of drive systems. An FOC system which utilizes the pulse population modulation method to synthesize the motor drive frequencies is examined. This system allows for a variable voltage to frequency ratio and enables the user to have independent control of both the speed and torque of an induction motor. A second generation of the control boards were developed and tested with the next point of focus being the minimization of the size and complexity of these controls. Many options were considered with the best approach being the use of a digital signal processor (DSP) due to its inherent ability to quickly evaluate control algorithms. The present test results of the system and the status of the optimization process using a DSP are discussed.
Document ID
19900013415
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Burrows, Linda M.
(NASA Lewis Research Center Cleveland, OH., United States)
Zinger, Don S.
(Akron Univ. OH., United States)
Roth, Mary Ellen
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1990
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NAS 1.15:103154
E-5516
NASA-TM-103154
Meeting Information
Meeting: Intersociety Energy Conversion Engineering Conference
Location: Reno, NV
Country: United States
Start Date: August 12, 1990
End Date: August 17, 1990
Sponsors: AIChE, IEEE, AIAA, ACS, ASME, SAE
Accession Number
90N22731
Funding Number(s)
PROJECT: RTOP 946-02-20
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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