Fuzzy logic-based directional full-range tuning control of wireless power pickups

Hsu, Jhih-Da; Hu, Aiguo Patrick; Swain, Akshya

doi:10.1049/iet-pel.2011.0364

Cited by 25 publications

(15 citation statements)

References 12 publications

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“…At any misaligned position, the power transmission is substantially contingent on coupling coefficient [4,8,12]. The coupling coefficient is characterized by magnetic coupling between the coils and their geometric design [4,[12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

et al. 2016

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Abstract:The inductive power transfer (IPT) system for electric vehicle (EV) charging has acquired more research interest in its different facets. However, the misalignment tolerance between the charging coil (installed in the ground) and pick-up coil (mounted on the car chassis), has been a challenge and fundamental interest in the future market of EVs. This paper proposes a new coil design QDQ (Quad D Quadrature) that maintains the high coupling coefficient and efficient power transfer during reasonable misalignment. The QDQ design makes the use of four adjacent circular coils and one square coil, for both charging and pick-up side, to capture the maximum flux at any position. The coil design has been modeled in JMAG software for calculation of inductive parameters using the finite element method (FEM), and its hardware has been tested experimentally at various misaligned positions. The QDQ coils are shown to be capable of achieving good coupling coefficient and high efficiency of the system until the misalignment displacement reaches 50% of the employed coil size.

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Section: Introductionmentioning

confidence: 99%

Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

et al. 2016

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“…In the past, most IPT systems have utilised various types of controllers including directional tuning, fuzzy, bit-stream and simple PI and PID controllers as a means of verifying a model or particular control strategy [7,6,9,10,8,12,13,31,32]. These controllers give sub-optimal performance if not correctly tuned and are vulnerable to system disturbances and parametric variations which are prevalent in such systems.…”

Section: Introductionmentioning

confidence: 99%

Robust H<sub>∞</sub> output feedback control of bidirectional inductive power transfer systems

Swain

Almakhles

Neath

et al. 2017

Archives of Control Sciences

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Robust H ∞ output feedback control of bidirectional inductive power transfer systems AKSHYA SWAIN, DHAFER ALMAKHLES, MICHAEL J. NEATH and ALIREZA NASIRI Bidirectional Inductive power transfer (IPT) systems behave as high order resonant networks and hence are highly sensitive to changes in system parameters. Traditional PID controllers often fail to maintain satisfactory power regulation in the presence of parametric uncertainties. To overcome these problems, this paper proposes a robust controller which is designed using linear matrix inequality (LMI) techniques. The output sensitivity to parametric uncertainty is explored and a linear fractional transformation of the nominal model and its uncertainty is discussed to generate a standard configuration for µ-synthesis and LMI analysis. An H ∞ controller is designed based on the structured singular value and LMI feasibility analysis with regard to uncertainties in the primary tuning capacitance, the primary and pickup inductors and the mutual inductance. Robust stability and robust performance of the system is studied through µ-synthesis and LMI feasibility analysis. Simulations and experiments are conducted to verify the power regulation performance of the proposed controller.

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“…As a result, more attention is being paid to advanced control methods. Recent research work can be categorized into sliding mode control [14], fuzzy control [15], optimal PID control [16] and robust control method [10]. For sliding mode control, an adaptive sliding-mode control method is proposed for WPT system [14].…”

Section: Introductionmentioning

confidence: 99%

“…This method can realize output power control for multiple users system, but prior knowledge is required for sliding mode surface design. For fuzzy control, a full directional tuning control method by using a fuzzy logic control method is proposed [15]. The logic control is used to determine the tuning step-size to overcome the chattering effects of using a fixed tuning step-size.…”

Section: Introductionmentioning

confidence: 99%

High Robustness Control for Robotic Wireless Power Transfer Systems with Multiple Uncertain Parameters Using a Virtual Buck Converter

Duan

Zou

2017

Energies

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Aiming at achieving high robustness performance in Wireless Power Transfer (WPT) systems for moving robot power supply, this paper proposes a H ∞ robust control method with multiple parameters that vary randomly, including the mutual inductance, load parameter, and operating frequency. These uncertain parameters make the system control extremely difficult. A composite Upper Linear Fractional Transformation (LFT) method is proposed to deal with the system uncertainty, particularly for the mutual inductance detachment, which is very unique and important for WPT systems. A suboptimal H ∞ controller design method is proposed based on Generalized State Space Averaging (GSSA) model in order to simplify the system structure. In controller implementation, a virtual buck converter for phase shifted regulation is proposed to replace real input buck converter. The proposed H ∞ control method is easy to implement because only the output voltage of the WPT system needs to be sampled, and based on which a simple DSP control algorithm is developed. Simulation and experimental results have demonstrated that the proposed control method can achieve less than 15 ms response speed with 70% mutual inductance variation and 50% load variation tolerance respectively.

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Fuzzy logic-based directional full-range tuning control of wireless power pickups

Cited by 25 publications

References 12 publications

Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

Robust H<sub>∞</sub> output feedback control of bidirectional inductive power transfer systems

High Robustness Control for Robotic Wireless Power Transfer Systems with Multiple Uncertain Parameters Using a Virtual Buck Converter

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