ew 19(24): e6

Research Article

Ensuring minimum duration of transient processes in switched voltage regulators with digital control

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  • @ARTICLE{10.4108/eai.16-10-2019.160838,
    author={Oleg  V.  Nepomnyashchiy and Yuri  V.  Krasnobaev and Aleksey  P.  Yablonsky and Vyacheslav  V.  Potekhin and Natalia  J.  Sirotinina},
    title={Ensuring minimum duration of transient processes in switched voltage regulators with digital control},
    journal={EAI Endorsed Transactions on Energy Web},
    volume={6},
    number={24},
    publisher={EAI},
    journal_a={EW},
    year={2019},
    month={10},
    keywords={switching voltage regulator, SVR, control law, transient time, adjustable components of state variables, digital control loop, field-programmable gate array, FPGA},
    doi={10.4108/eai.16-10-2019.160838}
}
  • Oleg V. Nepomnyashchiy
    Yuri V. Krasnobaev
    Aleksey P. Yablonsky
    Vyacheslav V. Potekhin
    Natalia J. Sirotinina
    Year: 2019
    Ensuring minimum duration of transient processes in switched voltage regulators with digital control
    EW
    EAI
    DOI: 10.4108/eai.16-10-2019.160838
Oleg V. Nepomnyashchiy1,*, Yuri V. Krasnobaev1, Aleksey P. Yablonsky1, Vyacheslav V. Potekhin2, Natalia J. Sirotinina1
  • 1: School of Space and Information Technologies, Siberian Federal University, Svobodny pr. 79, 660041, Krasnoyarsk, Russia
  • 2: Higher School Cyber-Physical and Control Systems, Peter the Great St. Petersburg Polytechnic University, Grazhdansky Pr. 28, 195220, St. Petersburg, Russia
*Contact email: 2955005@gmail.com

Abstract

This paper describes a solution suggested to minimize the finite transient duration of a switched voltage regulator (SVR) for step changes in load current. SVR control laws aimed at minimizing the transient time are synthesized, and the microprocessor-based architecture and operating algorithms of the control system are designed. The prototype of the SVR digital control unit is implemented on the field-programmable gate array integrated circuit Cyclone III EP3C120F780 using the NIOS II soft-processor core. Embedded software is developed to calculate the control pulse duration for power switches in accordance with the synthesized control laws taking into account the feedback loop signal. A case study of the prototype shows that it provides the duration of transients caused by a load current step change, equal to 3-4 conversion periods at the frequency of 120 kHz. It confirms the suitability of the developed models, algorithms and control laws for ensuring the minimum transient duration.

Keywords
switching voltage regulator, SVR, control law, transient time, adjustable components of state variables, digital control loop, field-programmable gate array, FPGA
Received
2018-12-20
Accepted
2019-10-14
Published
2019-10-16
Publisher
EAI
http://dx.doi.org/10.4108/eai.16-10-2019.160838

Copyright © 2019 Oleg V. Nepomnyashchiy et al, licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.

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