Recent Developments in Inverter Topologies for Direct Torque Controlled Induction Motors.

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Bibliographic Details
Title:	Recent Developments in Inverter Topologies for Direct Torque Controlled Induction Motors.
Authors:	Korkmaz, Fatih¹ fkorkmaz@karatekin.edu.tr, Karhan, Mustafa² mustafa.karhan@gibtu.edu.tr
Source:	Electronics & Electrical Engineering. 2026, Vol. 32 Issue 1, p25-39. 15p.
Subjects:	Induction motors, Torque control, Electric drives, Matrix converters, Wide gap semiconductors, Fault tolerance (Engineering)
Abstract:	Direct torque control (DTC), an industrial standard for applications requiring high dynamic performance in induction motors, has reached its performance limits owing to the high torque ripple and acoustic noise generated by traditional two-level inverters. This comprehensive review examines the technological evolution of power converter topologies developed to extend the performance limits of DTC, from classic multilevel structures, such as neutral point clamping and cascaded H-bridge, to recently developed reduced-switching-count and asymmetric hybrid topologies. The study also details the integration of matrix converters, which increase power density, and open-ended winding (OEW) architectures, which enable voltage optimization, with DTC. The article compares existing topologies in terms of cost, efficiency, and harmonic performance and provides critical projections on how silicon carbide (SiC)/gallium nitride (GaN)- based wide bandgap semiconductors and fault-tolerant designs will transform future electric drive systems, thereby offering a strategic roadmap for researchers and design engineers. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	Direct torque control (DTC), an industrial standard for applications requiring high dynamic performance in induction motors, has reached its performance limits owing to the high torque ripple and acoustic noise generated by traditional two-level inverters. This comprehensive review examines the technological evolution of power converter topologies developed to extend the performance limits of DTC, from classic multilevel structures, such as neutral point clamping and cascaded H-bridge, to recently developed reduced-switching-count and asymmetric hybrid topologies. The study also details the integration of matrix converters, which increase power density, and open-ended winding (OEW) architectures, which enable voltage optimization, with DTC. The article compares existing topologies in terms of cost, efficiency, and harmonic performance and provides critical projections on how silicon carbide (SiC)/gallium nitride (GaN)- based wide bandgap semiconductors and fault-tolerant designs will transform future electric drive systems, thereby offering a strategic roadmap for researchers and design engineers. [ABSTRACT FROM AUTHOR]
ISSN:	13921215
DOI:	10.5755/j02.eie.44227