High-precision current control through opposed current converters

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

10 Citations (Scopus)
17 Downloads (Pure)

Abstract

Switch blanking time, also referred to as dead-time, is one of the dominant sources of output current and voltage distortion in pulse width modulated power amplifiers. Extensive studies are known on elimination, minimization, and compensation of the effect. Most techniques achieve a reduction of the distortion but are not capable of completely removing it. This paper demonstrates that it is possible to fully eliminate dead-time effects by applying the so-called opposed current converter topology in combination with decoupled output and bias current control. The bias current guarantees continuous conduction mode, resulting in almost linear behavior and no zero crossing distortion. The zero-crossing behavior of the opposed current converter is compared to a conventional full-bridge converter with equivalently filtered output. Simulations and measurements on a full-bridge and an opposed current converter of 1.5 kW are included to demonstrate the effectiveness of the proposed ideas for high-precision applications.
Original languageEnglish
Title of host publicationProceedings of the 14th European Conference on Power Electronics and Applications (EPE 2011), 30 August - 1 September 2011, Birmingham, UK
PublisherInstitute of Electrical and Electronics Engineers
Pages1-10
ISBN (Print)978-1-61284-167-0
Publication statusPublished - 2011
Event14th European Conference on Power Electronics and Applications (EPE 2011 ECCE Europe) - Birmingham, United Kingdom
Duration: 30 Aug 20111 Sep 2011
Conference number: 14
http://www.epe2011.com/

Conference

Conference14th European Conference on Power Electronics and Applications (EPE 2011 ECCE Europe)
Abbreviated titleEPE '11 ECCE Europe
CountryUnited Kingdom
CityBirmingham
Period30/08/111/09/11
Other
Internet address

Fingerprint

Electric current control
Bias currents
Time switches
Power amplifiers
Topology
Electric potential

Cite this

Schellekens, J. M., Duarte, J. L., Huisman, H., & Hendrix, M. A. M. (2011). High-precision current control through opposed current converters. In Proceedings of the 14th European Conference on Power Electronics and Applications (EPE 2011), 30 August - 1 September 2011, Birmingham, UK (pp. 1-10). Institute of Electrical and Electronics Engineers.
Schellekens, J.M. ; Duarte, J.L. ; Huisman, H. ; Hendrix, M.A.M. / High-precision current control through opposed current converters. Proceedings of the 14th European Conference on Power Electronics and Applications (EPE 2011), 30 August - 1 September 2011, Birmingham, UK. Institute of Electrical and Electronics Engineers, 2011. pp. 1-10
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Schellekens, JM, Duarte, JL, Huisman, H & Hendrix, MAM 2011, High-precision current control through opposed current converters. in Proceedings of the 14th European Conference on Power Electronics and Applications (EPE 2011), 30 August - 1 September 2011, Birmingham, UK. Institute of Electrical and Electronics Engineers, pp. 1-10, 14th European Conference on Power Electronics and Applications (EPE 2011 ECCE Europe), Birmingham, United Kingdom, 30/08/11.

High-precision current control through opposed current converters. / Schellekens, J.M.; Duarte, J.L.; Huisman, H.; Hendrix, M.A.M.

Proceedings of the 14th European Conference on Power Electronics and Applications (EPE 2011), 30 August - 1 September 2011, Birmingham, UK. Institute of Electrical and Electronics Engineers, 2011. p. 1-10.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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N2 - Switch blanking time, also referred to as dead-time, is one of the dominant sources of output current and voltage distortion in pulse width modulated power amplifiers. Extensive studies are known on elimination, minimization, and compensation of the effect. Most techniques achieve a reduction of the distortion but are not capable of completely removing it. This paper demonstrates that it is possible to fully eliminate dead-time effects by applying the so-called opposed current converter topology in combination with decoupled output and bias current control. The bias current guarantees continuous conduction mode, resulting in almost linear behavior and no zero crossing distortion. The zero-crossing behavior of the opposed current converter is compared to a conventional full-bridge converter with equivalently filtered output. Simulations and measurements on a full-bridge and an opposed current converter of 1.5 kW are included to demonstrate the effectiveness of the proposed ideas for high-precision applications.

AB - Switch blanking time, also referred to as dead-time, is one of the dominant sources of output current and voltage distortion in pulse width modulated power amplifiers. Extensive studies are known on elimination, minimization, and compensation of the effect. Most techniques achieve a reduction of the distortion but are not capable of completely removing it. This paper demonstrates that it is possible to fully eliminate dead-time effects by applying the so-called opposed current converter topology in combination with decoupled output and bias current control. The bias current guarantees continuous conduction mode, resulting in almost linear behavior and no zero crossing distortion. The zero-crossing behavior of the opposed current converter is compared to a conventional full-bridge converter with equivalently filtered output. Simulations and measurements on a full-bridge and an opposed current converter of 1.5 kW are included to demonstrate the effectiveness of the proposed ideas for high-precision applications.

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Schellekens JM, Duarte JL, Huisman H, Hendrix MAM. High-precision current control through opposed current converters. In Proceedings of the 14th European Conference on Power Electronics and Applications (EPE 2011), 30 August - 1 September 2011, Birmingham, UK. Institute of Electrical and Electronics Engineers. 2011. p. 1-10