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A Novel Output Power Control of Wireless Powering Kitchen Appliance System with Free-Positioning Feature

Author

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  • Supapong Nutwong

    (Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand)

  • Anawach Sangswang

    (Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand)

  • Sumate Naetiladdanon

    (Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand)

  • Ekkachai Mujjalinvimut

    (Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand)

Abstract

To achieve a free-positioning wireless power transfer (WPT) system, the output power must be regulated throughout the operation. This paper presents a novel output power control of a WPT system, based on the model predictive control (MPC). The output power is predicted by utilizing the system’s mathematical model. The optimal duty cycle for a desired output power is obtained through the minimization of the objective function, which is simple and easy to implement, with no need for gain tuning. The proposed controller is implemented on the primary side, without any measurement or communication devices on the secondary side. This reduces the cost, size, and complexity of the WPT system. The load resistance and mutual inductance identification method is also introduced. It is based on the reflected impedance knowledge, where only the information of primary current is required. Experimental results of the output power step response show better performance compared with conventional Proportional-Integral (PI) control. The proposed controller is experimentally validated on a 200 W kettle. The output power can be kept constant at 200 W while the kettle is laterally moved. With the proposed controller, the kettle can be placed freely up to 7 cm from the align position, which is 63.64% of the primary coil’s outer radius.

Suggested Citation

  • Supapong Nutwong & Anawach Sangswang & Sumate Naetiladdanon & Ekkachai Mujjalinvimut, 2018. "A Novel Output Power Control of Wireless Powering Kitchen Appliance System with Free-Positioning Feature," Energies, MDPI, vol. 11(7), pages 1-18, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:7:p:1671-:d:154690
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    References listed on IDEAS

    as
    1. Yan Lu & Dongsheng Brian Ma, 2016. "Wireless Power Transfer System Architectures for Portable or Implantable Applications," Energies, MDPI, vol. 9(12), pages 1-16, December.
    2. Zhenshi Wang & Xuezhe Wei & Haifeng Dai, 2015. "Design and Control of a 3 kW Wireless Power Transfer System for Electric Vehicles," Energies, MDPI, vol. 9(1), pages 1-18, December.
    3. Seung-Hwan Lee & Jae-Hee Kim & Jun-Ho Lee, 2016. "Development of a 60 kHz, 180 kW, Over 85% Efficiency Inductive Power Transfer System for a Tram," Energies, MDPI, vol. 9(12), pages 1-15, December.
    4. Kunwar Aditya & Sheldon Williamson, 2016. "Linearization and Control of Series-Series Compensated Inductive Power Transfer System Based on Extended Describing Function Concept," Energies, MDPI, vol. 9(11), pages 1-16, November.
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    Cited by:

    1. Canberk Sezer & Nihan Altintas, 2023. "Adaptation of Inductive Power Transfer to Small Household Appliances That Can Operate on Induction Heating Cooktops: Wireless Electric Kettle," Energies, MDPI, vol. 16(8), pages 1-25, April.
    2. Dongsheng Yang & Sokhui Won & Jiangwei Tian & Zixin Cheng & Jongho Kim, 2019. "A Method of Estimating Mutual Inductance and Load Resistance Using Harmonic Components in Wireless Power Transfer System," Energies, MDPI, vol. 12(14), pages 1-19, July.

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