A DTC strategy dedicated to three‐switch three‐phase inverter‐fed induction motor drives

COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering - 2008
AsmaBen Rhouma1, AhmedMasmoudi1
1Research Unit on Renewable Energies & Electric Vehicles, ENIS, University of Sfax, Sfax, Tunisia

Tóm tắt

PurposeThe purpose of this paper is to describe the implementation of a direct torque control strategy dedicated to three‐switch three‐phase delta‐shaped inverter (TSTPI) fed induction motor drives as well as the comparison of its performance with those yielded by six‐switch three‐phase inverter (SSTPI) fed induction motor drives under the Takahashi DTC strategy.Design/methodology/approachReferring to the asymmetrical stator voltage vectors and in order to reach high dynamic with low ripple of the electromagnetic torque response, the design of the vector selection table should include virtual voltage vectors by the subdivision of each sector into two equal sub‐sectors.FindingsIt has been shown that the implementation of the proposed DTC strategy in TSTPI‐fed induction motor drives leads to higher transient behaviour and better steady‐state features than those exhibited by the Takahashi DTC strategy implemented in SSTPI‐fed induction motor drives.Research limitations/implicationsThe research should be extended to a comparison of the obtained simulation results with experimental measurements.Practical implicationsA 50 per cent reduction of cost and compactness associated with a 50 per cent increase of reliability makes the TSTPI an interesting candidate, especially in large‐scale production applications such as the automotive industry.Originality/valueThe paper proposes an approach to improve the cost‐effectiveness, the compactness and the reliability of TSTPI‐fed induction motor drives, which represents a crucial benefit in electric and hybrid propulsion systems.

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Tài liệu tham khảo

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COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

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