Steady-State Multiple Parameters Estimation of the Inductive Power Transfer System

Despotović, Živadin; Reljić, Dejan; Vasić, Veran; Oros, Djura

doi:10.1109/access.2022.3170913

Cited by 3 publications

(6 citation statements)

References 51 publications

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“…Additionally, the use of multiple access points results in cost and frequent handovers, resulting in added delays, packet loss [24], [25]. Moreover, interference between multiple access points is common and can also affect the reliability of the system [26]. Also, communication-related delays (at least ~10msec) can lead to reduced closed-loop performance in [26].…”

Section: A Dependence On Communicationmentioning

confidence: 99%

“…Moreover, interference between multiple access points is common and can also affect the reliability of the system [26]. Also, communication-related delays (at least ~10msec) can lead to reduced closed-loop performance in [26].…”

Section: A Dependence On Communicationmentioning

confidence: 99%

“…The underlying strategy is that multiple equations can be obtained by reconfiguring into various circuit topologies and frequencies through the opencircuiting and short-circuiting of load. These multiple equations allow the identification of k. Despotović et al [26] proposed multiple operating modes (open circuit of secondary side, short circuit of secondary side and load connection) to estimate k and load resistance. The methods proposed in [38] and [39] can perform fast k estimation (62ms and 7ms, respectively) by momentarily shorting the rectifier outputs to ground and performing a frequency sweep.…”

Section: Interruption Of Powermentioning

confidence: 99%

“…The benefit of ( 19)-( 22) is that it achieves not only maximum efficiency but also power regulation. This is advantageous compared to [8], [37], and [26]. Specifically, the [8] loses power regulation when RX impedance is adjusted because the TX does not know the RX's load status.…”

Section: Maximum Efficiency Tracking and Power Regulation For Multipl...mentioning

confidence: 99%

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Coupling Estimation and Maximum Efficiency Tracking in Multi-Transmitters WPT for Fast Moving Receiver

Khan,

Ahn

2024

IEEE Access

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Maximum efficiency tracking (MET) with multiple concurrently-activated transmitters (TXs) has not yet been investigated thoroughly. This paper proposes a fast real-time estimation of coupling coefficients and load resistance for multiple concurrently-activated TXs and a moving RX. This is the first paper that demonstrates iteration-less, fast, communication-less MET with power regulation when the RX is moving across multiple activated TX array. The controller senses only the voltage magnitude of TX coilcapacitor resonator, and the input DC voltage and DC current of inverter. Once the parameters are estimated, the controller sets the converters to maximum efficiency point immediately. The benefits of proposed method are that it does not require a communication channel, extra circuit components for MET, time-consuming iterations and computations, and periodic interruption of power flow due to load disconnection or initialization, all of which were limitations in typical methods. Experimental results show that the proposed method provides a fast response (3.8ms) for an RX moving at 6.84 km/h across multiple TXs.INDEX TERMS Dynamic wireless power transfer, resonant converter, maximum efficiency point tracking, multiple transmitters.

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Section: A Dependence On Communicationmentioning

confidence: 99%

Section: A Dependence On Communicationmentioning

confidence: 99%

Section: Interruption Of Powermentioning

confidence: 99%

Section: Maximum Efficiency Tracking and Power Regulation For Multipl...mentioning

confidence: 99%

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Coupling Estimation and Maximum Efficiency Tracking in Multi-Transmitters WPT for Fast Moving Receiver

Khan,

Ahn

2024

IEEE Access

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“…Different compensation schemes and impedance matching circuits are discussed, classified, and critically compared in [34][35][36][37]. An increased number of passive components can cause extra loss [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Double-Layer Coils Design for 11 kW Wireless Power Transfer

Herceg,

Rajs,

Despotović

et al. 2024

Electronics

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The design of a wireless power transfer system with double rectangular coils for 11 kW power transfer is considered. System modeling and numerical calculation of the system parameters are described. Coils are made from available Litz wire, which has a smaller than necessary diameter for the required power. Thus, a setup with double layer coils was developed, which resulted in a modified design. Starting from a system consisting of coupled coils, as suggested by the standard for wireless power transfer Level 3 in class Z1, different coil and ferrite shield layouts were tested in numerical simulations, and their parameters were calculated. The prototype was constructed based on the simulated model with the best results and properties. Numerical results were verified by laboratory measurements, and a successful power transfer at 11 kW was achieved.

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A Method to Improve Parameter Estimation Success

Unozkan

2023

IEEE Access

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This paper introduces a method for improving parameter estimation in statistical models. Parameter estimation is a popular area of study in statistics, and recent years have seen the introduction of new distributions with more parameters to enhance modelling success. While finding a suitable model for a dataset is crucial, accurately estimating parameters is equally important. In some cases, classical parameter estimation methods fail to provide a closed form of estimation for parameters. As a result, researchers commonly resort to numerical methods and software programs for parameter estimation in models. The success rates of models have gained significance with the rising popularity of novel techniques like machine learning algorithms and artificial neural networks. Robust and reliable models are built on the strong theoretical foundations of statistical distributions. Specific distributions are used in various research fields to model datasets, and the assumptions associated with these distributions provide valuable insights into observations. Additionally, parameter estimation results sometimes lead researchers to direct conclusions. This paper presents an improvement method that relies on the estimation of parameters from other statistical distributions. This novel approach aims to make parameter estimation easier and more successful in certain situations. In the applications in this paper, the proposed methodology improves the success rate by up to 10% which provides an additional 6% success in the models.

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Steady-State Multiple Parameters Estimation of the Inductive Power Transfer System

Cited by 3 publications

References 51 publications

Coupling Estimation and Maximum Efficiency Tracking in Multi-Transmitters WPT for Fast Moving Receiver

Coupling Estimation and Maximum Efficiency Tracking in Multi-Transmitters WPT for Fast Moving Receiver

Double-Layer Coils Design for 11 kW Wireless Power Transfer

A Method to Improve Parameter Estimation Success

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