Improved robust controller design for dynamic IPT system under mutual-inductance uncertainty

Huang, Limin; Li, Yanling; He, Zhengyou; Gao, Shujing; Yu, Jin Yong

doi:10.1109/wow.2015.7132855

Cited by 9 publications

(4 citation statements)

References 13 publications

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“…When the system resonates, that is, jωL 1 + 1/jωC 1 = jωL 2 + 1/jωC 2 = 0, the coil is in a self-resonant state. Then, the values of I 1 , I 3 , I 6 , and I 8 are obtained by solving the voltage current equations, and then the powers of the transmitting end and the picking end are obtained, thereby obtaining the transmission efficiency of entire ICPT System (7). )…”

Section: System Principle and Analysismentioning

confidence: 99%

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Archives of Electrical Engineering

Gao,

2020

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In order to meet the application requirements of high-power mobile inductivelycoupled power transfer (ICPT) equipment, the structure of the dual transmitter and pickup can be used to improve the transmission power of the ICPT system. However, this structure cannot easily describe the change of the mutual inductance parameter in the moving state, making the mathematical model difficult to establish. The change of load parameters during the movement will affect the current and voltage at the transmitter and pickup coils. Aiming at these problems, this paper proposes a dual transmitter and pickup ICPT system based on inductor-capacitor-inductor (LCL) compensation network, and analyzes its power transmission efficiency. By setting the shape and size of the coil, the influence of the change of the mutual inductance parameters on the system efficiency during the movement is reduced. The changes of the mutual inductance parameters of the ICPT system under the moving state are simulated by changing the coupling coefficient in the PSpice software. The results show that the structure of the ICPT system used in this paper can improve the output power and reduce the influence of the system when the load changes.

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Section: System Principle and Analysismentioning

confidence: 99%

“…Output power and transmission efficiency are two important performance indicators of the ICPT system. The compensation network [5,6] and control method [7] of the ICPT system are the key factors affecting the performance index of the system. They are also hot topic for most scholars.…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Gao,

2020

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“…The controller was designed based on fixed frequency and variable duty ratio control. Some of the latest work, presented in the literature, related to the controller design for an IPT system can be read in [22][23][24][25]. Following subsection discusses a step by step procedure for derivation of a voltage controller.…”

Section: Bode Plot Of Open-loop Systemmentioning

confidence: 99%

Linearization and Control of Series-Series Compensated Inductive Power Transfer System Based on Extended Describing Function Concept

Aditya

Williamson

2016

Energies

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Abstract:The extended describing function (EDF) is a well-known method for modelling resonant converters due to its high accuracy. However, it requires complex mathematical formulation effort. This paper presents a simplified non-linear mathematical model of series-series (SS) compensated inductive power transfer (IPT) system, considering zero-voltage switching in the inverter. This simplified mathematical model permits the user to derive the small-signal model using the EDF method, with less computational effort, while maintaining the accuracy of an actual physical model. The derived model has been verified using a frequency sweep method in PLECS. The small-signal model has been used to design the voltage loop controller for a SS compensated IPT system. The designed controller was implemented on a 3.6 kW experimental setup, to test its robustness.

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“…Stationary IPT system operates in a constant coupling condition to maintain a stable and efficient power transmission [3]. However, in the context of mobile applications, the external mechanical disturbances can produce an unavoidable instability to the system due to a bad positioning of the coupler [4]. Thus, in the design and optimization of couplers, it is essential to accurately and quickly evaluate the sensitivity of the mutualinductance versus its degrees of freedom [5].…”

Section: Introductionmentioning

confidence: 99%

General Integral Formulation of Magnetic Flux Computation and Its Application to Inductive Power Transfer System

et al. 2017

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An accurate and fast post-processing method for computing the magnetic flux through a coil is discussed and applied to the analysis of inductive power transfer (IPT) systems. This post-processing method is well adapted to various numerical methods. In this paper, a volume integral method based on magnetic vector potential interpolation is focused to solve the computational magnetostatic problem for the field quantities. It does not require the discretization of the predominant air domain so is perfectly suited for the modeling of IPT couplers. In magnetostatic analysis, the magnetic flux is expressed as a summation of two terms. The first one is created by source coils and is computed by integral expressions. The second one is obtained by a light integration only on the magnetic region. The method is accurate and associated to a reduced computation time. It is compared with both finite element method and experimental results to check its performance. Index Terms-Inductive power transfer (IPT), magnetic flux computation, magnetic vector potential, mutual-inductance, volume integral method (VIM).

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Improved robust controller design for dynamic IPT system under mutual-inductance uncertainty

Cited by 9 publications

References 13 publications

Archives of Electrical Engineering

Archives of Electrical Engineering

Linearization and Control of Series-Series Compensated Inductive Power Transfer System Based on Extended Describing Function Concept

General Integral Formulation of Magnetic Flux Computation and Its Application to Inductive Power Transfer System

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