NDLI: Discrete-time current regulator design for AC machine drives

Content Provider	IEEE Xplore Digital Library
Author	Hongrae Kim Degner, M. Guerrero, J.M. Briz, F. Lorenz, R.D.
Copyright Year	2009
Description	Author affiliation: U. of Wisconsin-Madison, 53706, USA (Lorenz, R.D.) \|\| Ford Motor Company, Dearborn, MI 48120 USA (Degner, M.) \|\| ABB Inc., Raleigh, NC 27606 USA (Hongrae Kim) \|\| University of Oviedo, 33204, Gijón Spain (Guerrero, J.M.; Briz, F.)
Abstract	This paper analyzes the behavior of discrete-time current regulators for AC machines operating at high ratios of fundamental-to-sampling frequencies, a situation common for high speed automotive drives and large traction drives. At high ratios of fundamental-to-sampling frequencies, highly oscillatory, or unstable, response can occur if the current regulator design does not properly incorporate the effects of the discrete nature of the controller, including delays between the sampling of signals and the application of the voltage commands through pulse-width modulation (PWM). This paper investigates these issues for different design methods and current regulator topologies. As part of this investigation a simple discrete-time domain AC machine model is developed that includes the delays associated with PWM. This model is then used to design a discrete-time domain version of the complex vector PI current regulator that demonstrates improved response compared with the other regulators studied. Simulation and experimental results are provided to compare the performance, stability, and robustness of the current regulators analyzed.
Starting Page	1317
Ending Page	1324
File Size	1337700
Page Count	8
File Format	PDF
ISBN	9781424428939
DOI	10.1109/ECCE.2009.5316077
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-09-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Regulators Robust stability Discrete-time complex vector current regulator design Delay effects AC machines Drives Pulse width modulation Voltage control Automotive engineering Digital delay Frequency Ratio of fundamental-to-sampling frequencies Signal design Complex vector current regulator design
Content Type	Text
Resource Type	Article

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