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A digital signal processing approach to real-time AC motor modeling
- Source :
- IEEE Transactions on Industrial Electronics. 39:36-45
- Publication Year :
- 1992
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 1992.
-
Abstract
- Discrete-time computational models of squirrel-cage AC motors are derived and analyzed for the purpose of advanced motor control. The starting point is a continuous-time model defined by a pair of simultaneous complex-coefficient differential equations. Discrete-time models are derived using both the bilinear transformation and the forward-difference approximation. The exact dependence between stability and the minimum sampling rate in the forward-difference approach is shown. The responses of the two discretized models are compared using real-world motor parameters. Using the forward difference method, a more compact implementation is obtained (although a higher sampling rate is required) as compared to the bilinear transformed model of equivalent performance and 2.7 times higher computational complexity. A 16/24-b DSP-ASIC coprocessor prototype implementing the AC motor model is introduced. >
- Subjects :
- Computational model
Discretization
business.industry
Computer science
Differential equation
Finite difference
Motor control
Bilinear interpolation
AC motor
Control and Systems Engineering
Control theory
Bilinear transform
Electrical and Electronic Engineering
business
Digital signal processing
Subjects
Details
- ISSN :
- 02780046
- Volume :
- 39
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Industrial Electronics
- Accession number :
- edsair.doi...........4ec2dd63c2be33c8666580963e88669e