Real-Time Optimization of Dead Time for Motor Control Inverters
A correlation-based control technique was used previously to optimize dead time in synchronous rectifier-based buck converters. Here, the correlation method is applied to the problem of optimizing dead time in motor drive inverters. The approach works on each inverter leg. It optimizes dead time to minimize input current either to each leg or to the inverter bridge as a whole. This in turn minimizes switching loss as current commutates between inverter devices. The approach is shown to be stable whenever switching action takes place. An experimental implementation is given. Results show a significant reduction in switching loss for the test inverter.
J. W. Kimball and P. T. Krein, "Real-Time Optimization of Dead Time for Motor Control Inverters," Proceedings of the 28th IEEE Annual Power Electronics Specialists Conference (1997, St. Louis, MO), vol. 1, pp. 597-600, Institute of Electrical and Electronics Engineers (IEEE), Jun 1997.
The definitive version is available at http://dx.doi.org/10.1109/PESC.1997.616782
28th IEEE Annual Power Electronics Specialists Conference (1997: Jun. 23-26, St. Louis, MO)
Electrical and Computer Engineering
Keywords and Phrases
Bridge Circuits; Correlation Methods; Electric Commutation; Electric Currents; Electric Losses; Optimization; Rectifying Circuits; Dead Time; Switching Losses; Electric Inverters; Motor Drives; Inverters; Leg; Switching Loss; Buck Converters; Correlation; Optimization Methods; Bridges; Commutation; Testing; AC Motor Drives; Machine Control; Invertors; Real-Time Systems; Commutation; Switching Circuits; Losses
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Article - Conference proceedings
© 1997 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.