Real-Time Optimization of Dead Time for Motor Control Inverters

Abstract

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.

Meeting Name

28th IEEE Annual Power Electronics Specialists Conference (1997: Jun. 23-26, St. Louis, MO)

Department(s)

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

International Standard Book Number (ISBN)

780338405

International Standard Serial Number (ISSN)

0275-9306

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1997 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jun 1997

Link to Full Text

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