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A Power-Factor-Corrected Wireless Charging System with Simple Control for Indoor Mobile Robots.

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Title: A Power-Factor-Corrected Wireless Charging System with Simple Control for Indoor Mobile Robots.
Authors: Stepins, Deniss1 (AUTHOR) deniss.stepins@rtu.lv, Zakis, Janis1,2 (AUTHOR), Joseph, Jismon2,3 (AUTHOR), Adeepa, Thumula1 (AUTHOR), Husev, Oleksandr2,3 (AUTHOR), Lapickis, Daniels1,3 (AUTHOR)
Source: Energies (19961073). Mar2026, Vol. 19 Issue 5, p1270. 22p.
Subject Terms: *Electric power factor correction, *Mobile robots, *Power electronics, *Computer network protocols, *Feedback control systems, *Conservation of energy, *Wireless power transmission
Abstract: A conventional resonant-inductive wireless charging system includes a power factor corrector (PFC) to maintain a high input power factor (PF) and low distortion of the input current (THDI). Although a conventional low-power wireless charging system with a PFC has relatively simple power electronic circuitry, its control stage is comparatively complex and expensive. This complexity arises because it relies on multiple feedback loops, as well as a radio communication link with complex communication protocols. As a result, the design complexity and development time are relatively high, and a highly qualified engineer with strong programming and communication expertise is needed. Some state-of-the-art solutions have eliminated the wireless communication link at the cost of increased size of the receiving side. To overcome these drawbacks, this paper proposes a simpler control and communication method that combines output voltage and current limiting with a low-latency wireless communication link transmitting 1-bit logic signals. This approach improves the cost-effectiveness of the control circuit, reduces system complexity, and keeps the receiving side compact, while maintaining performance comparable to conventional and state-of-the-art solutions. The proposed method is validated through simulations and experiments using a 60 W prototype. Results show that the power-factor-corrected wireless charging system with the proposed control and communication scheme achieves a THDI of 4.3%, a power factor of 0.99, high charging voltage accuracy (±0.5%), and satisfactory current accuracy (±9%). [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 192640995
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: A Power-Factor-Corrected Wireless Charging System with Simple Control for Indoor Mobile Robots.
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  Data: <searchLink fieldCode="JN" term="%22Energies+%2819961073%29%22">Energies (19961073)</searchLink>. Mar2026, Vol. 19 Issue 5, p1270. 22p.
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  Data: *<searchLink fieldCode="DE" term="%22Electric+power+factor+correction%22">Electric power factor correction</searchLink><br />*<searchLink fieldCode="DE" term="%22Mobile+robots%22">Mobile robots</searchLink><br />*<searchLink fieldCode="DE" term="%22Power+electronics%22">Power electronics</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+network+protocols%22">Computer network protocols</searchLink><br />*<searchLink fieldCode="DE" term="%22Feedback+control+systems%22">Feedback control systems</searchLink><br />*<searchLink fieldCode="DE" term="%22Conservation+of+energy%22">Conservation of energy</searchLink><br />*<searchLink fieldCode="DE" term="%22Wireless+power+transmission%22">Wireless power transmission</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: A conventional resonant-inductive wireless charging system includes a power factor corrector (PFC) to maintain a high input power factor (PF) and low distortion of the input current (THDI). Although a conventional low-power wireless charging system with a PFC has relatively simple power electronic circuitry, its control stage is comparatively complex and expensive. This complexity arises because it relies on multiple feedback loops, as well as a radio communication link with complex communication protocols. As a result, the design complexity and development time are relatively high, and a highly qualified engineer with strong programming and communication expertise is needed. Some state-of-the-art solutions have eliminated the wireless communication link at the cost of increased size of the receiving side. To overcome these drawbacks, this paper proposes a simpler control and communication method that combines output voltage and current limiting with a low-latency wireless communication link transmitting 1-bit logic signals. This approach improves the cost-effectiveness of the control circuit, reduces system complexity, and keeps the receiving side compact, while maintaining performance comparable to conventional and state-of-the-art solutions. The proposed method is validated through simulations and experiments using a 60 W prototype. Results show that the power-factor-corrected wireless charging system with the proposed control and communication scheme achieves a THDI of 4.3%, a power factor of 0.99, high charging voltage accuracy (±0.5%), and satisfactory current accuracy (±9%). [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192640995
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        Value: 10.3390/en19051270
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      – Code: eng
        Text: English
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        PageCount: 22
        StartPage: 1270
    Subjects:
      – SubjectFull: Electric power factor correction
        Type: general
      – SubjectFull: Mobile robots
        Type: general
      – SubjectFull: Power electronics
        Type: general
      – SubjectFull: Computer network protocols
        Type: general
      – SubjectFull: Feedback control systems
        Type: general
      – SubjectFull: Conservation of energy
        Type: general
      – SubjectFull: Wireless power transmission
        Type: general
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      – TitleFull: A Power-Factor-Corrected Wireless Charging System with Simple Control for Indoor Mobile Robots.
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            NameFull: Stepins, Deniss
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            NameFull: Zakis, Janis
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            NameFull: Joseph, Jismon
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            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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              Value: 19
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              Value: 5
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            – TitleFull: Energies (19961073)
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