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A Nonlinear Wide-Bandwidth Digital Current Controller for DC–DC and DC–AC Converters.

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Title: A Nonlinear Wide-Bandwidth Digital Current Controller for DC–DC and DC–AC Converters.
Authors: Buso, Simone, Caldognetto, Tommaso
Source: IEEE Transactions on Industrial Electronics. Dec2015, Vol. 62 Issue 12, p7687-7695. 9p.
Subjects: Electric currents, Digital control systems, Hysteresis, Cascade converters, Direct currents, Alternating currents
Abstract: A fully digital, nonlinear, wide-bandwidth current controller for dc–ac and dc–dc voltage source converters is presented in this paper. Exploiting oversampling, the controller mimics an analog hysteresis current controller, but it does not employ analog comparators, digital-to-analog converters, or any other analog signal pre- or postprocessing circuitry. Indeed, it fully virtualizes the hysteresis controller's operation and, based only on a nonlinear, efficient current error processing algorithm, drives the power converter at almost constant switching frequency. Overall, it offers the same excellent dynamic performance of the analog hysteresis controller and, at the same time, solves most of the related problems. Because the current error sample processing algorithm is inherently parallel in structure, the controller is suited for VHDL synthesis and field-programmable gate-array implementation, which guarantees flexibility and low cost, together with minimum computation and signal conversion delays. Its intended application areas include active filters, uninterruptible power supplies, microgrid distributed energy resource controllers, laboratory battery testers, and welding machines. [ABSTRACT FROM PUBLISHER]
Copyright of IEEE Transactions on Industrial Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: A Nonlinear Wide-Bandwidth Digital Current Controller for DC–DC and DC–AC Converters.
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  Data: <searchLink fieldCode="AR" term="%22Buso%2C+Simone%22">Buso, Simone</searchLink><br /><searchLink fieldCode="AR" term="%22Caldognetto%2C+Tommaso%22">Caldognetto, Tommaso</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Electric+currents%22">Electric currents</searchLink><br /><searchLink fieldCode="DE" term="%22Digital+control+systems%22">Digital control systems</searchLink><br /><searchLink fieldCode="DE" term="%22Hysteresis%22">Hysteresis</searchLink><br /><searchLink fieldCode="DE" term="%22Cascade+converters%22">Cascade converters</searchLink><br /><searchLink fieldCode="DE" term="%22Direct+currents%22">Direct currents</searchLink><br /><searchLink fieldCode="DE" term="%22Alternating+currents%22">Alternating currents</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A fully digital, nonlinear, wide-bandwidth current controller for dc–ac and dc–dc voltage source converters is presented in this paper. Exploiting oversampling, the controller mimics an analog hysteresis current controller, but it does not employ analog comparators, digital-to-analog converters, or any other analog signal pre- or postprocessing circuitry. Indeed, it fully virtualizes the hysteresis controller's operation and, based only on a nonlinear, efficient current error processing algorithm, drives the power converter at almost constant switching frequency. Overall, it offers the same excellent dynamic performance of the analog hysteresis controller and, at the same time, solves most of the related problems. Because the current error sample processing algorithm is inherently parallel in structure, the controller is suited for VHDL synthesis and field-programmable gate-array implementation, which guarantees flexibility and low cost, together with minimum computation and signal conversion delays. Its intended application areas include active filters, uninterruptible power supplies, microgrid distributed energy resource controllers, laboratory battery testers, and welding machines. [ABSTRACT FROM PUBLISHER]
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  Data: <i>Copyright of IEEE Transactions on Industrial Electronics is the property of IEEE and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1109/TIE.2015.2465351
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        Text: English
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    Subjects:
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        Type: general
      – SubjectFull: Digital control systems
        Type: general
      – SubjectFull: Hysteresis
        Type: general
      – SubjectFull: Cascade converters
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      – SubjectFull: Direct currents
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      – SubjectFull: Alternating currents
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              Text: Dec2015
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