Paper Info
Title
Should ΔΣ modulators used in AC motor drives be adapted to the mechanical load of the motor?
Abstract
We consider the use of ΔΣ modulators in ac motor drives, focusing on the many additional degrees of freedom that this option offers over Pulse Width Modulation (PWM). Following some recent results, we show that it is possible to fully adapt the ΔΣ modulator Noise Transfer Function (NTF) to the rest of the drive chain and that the approach can be pushed even to a fine adaptation of the NTF to the specific motor loading condition. We investigate whether and to what extent the adaptation should be pursued. Using a representative test case and extensive simulation, we conclude that a mild adaptation can be beneficial, leading to Signal to Noise Ratio (SNR) improvements in the order a few dB, while the advantage pushing the adaptation to the load tracking is likely to be minimal.
Year
DOI
Venue
2012
10.1109/ICECS.2012.6463619
Electronics, Circuits and Systems
Keywords
Field
DocType
AC motor drives,modulators,pulse width modulation,ΔΣ modulators,AC motor drives,SNR improvements,noise transfer function,representative test case,signal to noise ratio,switched-mode power conversion
Computer science,Control theory,Signal-to-noise ratio,AC motor,Pulse-width modulation,Electronic engineering,Modulation,Control engineering,Mechanical load,Transfer function,Chain drive
Conference
Volume
ISSN
ISBN
abs/1302.7172
Proceeding of the 19th IEEE International Conference on Electronics, Circuits and Systems (ICECS), 2012, pp. 849-852
978-1-4673-1259-2
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Sergio Callegari111218.52
Federico Bizzarri213131.78