Wireless Power Supply for Small Household Appliances Using Energy Model

Shu, Xujian; Xiao, Wenxun; Zhang, Bo

doi:10.1109/access.2018.2880746

Cited by 15 publications

(9 citation statements)

References 7 publications

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“…The result shows that the maximal loss is from the resonance coil matching. According to the equation (10) and the equation 12, when the ratio of Lr and Cr is about 49, and the optimal load is 7.83 Ω, the maximal efficiency is about 100 % theoretically. However, the actual parameters of the resonant coil exist the error.…”

Section: Resultsmentioning

confidence: 99%

“…However, some power supply groups and mobile hand generators can also play an emergency role, which need rely on the power supply group. Some devices can charge between the portable devices through the Buck/Boost topology circuit, which need rely on the connection line [10]. Therefore, it is necessary to study the bidirectional wireless charging technology for the portable devices.…”

Section: Introductionmentioning

confidence: 99%

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Study on Novel Bidirectional AC-DC Converter Circuit of the Wireless Charging for Portable Devices

2020

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In this paper, a novel symmetrical topology for the small power high frequency bidirectional AC-DC converter has been proposed, which is applied to the bi-directional wireless power transmission system based on the magnetic coupling resonance. It has dual functions of the inverter and rectifier. The research is mainly reflected in the following aspects: First, based on analyzing the principle of the wireless power bidirectional transmission technology, the operation mechanism of the topology circuit is analyzed emphatically. Second, the feasibility of the designed converter is verified by the simulation of the PSPICE software. Third, the hardware system has been operated at 200 kHz in the modes of the constant current, the constant voltage and the constant resistance, respectively. The results show the maximal output power of the designed circuit is 7.8 W, meeting the design requirement. This circuit has the advantages of the simple circuit structure and simple control. It's suitable for the bidirectional wireless power charging of the small power portable devices.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on Novel Bidirectional AC-DC Converter Circuit of the Wireless Charging for Portable Devices

2020

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“…Experimental results show that the closed-loop system can quickly and accurately track the reference voltage, effectively suppress the influence of external disturbance and parameters perturbation and obtain output robustness. µ-synthesis control is characterized by the ability to obtain RSRP of system G k = 2.508e − 5s 10 + 1.12e4s 9 + 1.63e8s 8 + 4.536e14s 7 + 4.6e18s 6 + 6.06e24s 5 + 3.8e28s 4 + 2.86e34s 3 + 1.04e38s 2 + 3.038e43s + 7.237e46 s 10 + 1.9e4s 9 + 4.1e10s 8 + 6.04e14s 7 + 5.45e20s 6 + 5.919e24s 5 + 2.6e30s 4 + 2.04e34s 3 + 2.77e39s 2 + 1.64e43s + 1.64e40…”

Section: Discussionmentioning

confidence: 99%

“…Based on the principle of power conservation, R eq is the equivalent input resistance of the rectifier given as (5), where U oc is RMS of the secondary side open circuit voltage, U o is the load output voltage and Q s is quality factor [23].…”

Section: Working Principle Of Dual Lcl Ipt Systemmentioning

confidence: 99%

“…Inductive power transfer (IPT) based on electromagnetic induction is a popular wireless power transfer technology, which has attracted the attention of scholars and researchers in recent years. It has been widely adopted in electric vehicles [1]- [2], rail transit [3]- [4], household appliances [5], implantable medical devices [6], wearable mobile devices [7], etc.…”

Section: Introductionmentioning

confidence: 99%

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Robust $\mu$ -Synthesis Control of Dual LCL Type IPT System Considering Load and Mutual Inductance Uncertainty

Xia

Sun

et al. 2019

IEEE Access

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The output voltage of a dual LCL inductive power transfer (IPT) system varies with the load and mutual inductance, which can affect the system performance, e.g., the charging speed of electrical equipment. This paper proposes a robust controller to maintain constant output voltage against the load and mutual inductance variations. A µ-synthesis method is proposed based on structured singular value to design the dual LCL IPT closed-loop system. The frequency-domain nominal model of the system is established by using the generalized state-space averaging (GSSA) method. A standard M-configuration is generalized through separating the nominal and uncertain block by upper linear fractional transformation (LFT). The µ-controller is finally obtained by D-K iteration. The robust performance analysis and time-domain performance analysis are also carried out. The simulation and experimental results verified the effectiveness of the proposed modeling and controller design, and demonstrated the robust stability and robust performance of the dual LCL IPT system. INDEX TERMS Generalized state-space averaging (GSSA), inductive power transfer (IPT), robust control, µ-synthesis.

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A methodology to achieve the maximum transfer efficiency for magnetic coupling wireless power transfer systems

et al. 2019

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Wireless Power Supply for Small Household Appliances Using Energy Model

Cited by 15 publications

References 7 publications

Study on Novel Bidirectional AC-DC Converter Circuit of the Wireless Charging for Portable Devices

Study on Novel Bidirectional AC-DC Converter Circuit of the Wireless Charging for Portable Devices

Robust $\mu$ -Synthesis Control of Dual LCL Type IPT System Considering Load and Mutual Inductance Uncertainty

A methodology to achieve the maximum transfer efficiency for magnetic coupling wireless power transfer systems

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