Higher Order Compensation for Inductive-Power-Transfer Converters With Constant-Voltage or Constant-Current Output Combating Transformer Parameter Constraints

Qu, Xiaohui; Jing, Yanyan; Han, Hongdou; Wong, Siu-Chung; Tse, Chi K.

doi:10.1109/tpel.2016.2535376

Cited by 188 publications

(82 citation statements)

References 30 publications

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“…where k is the coupling coefficient of the coupler. Because of the low values taken by k in IPTSs, inequality (22) is verified unless the difference between the designed and actual values of the reactive elements gets very high. Improvement in the efficiency attained with the TSR method has been examined for the prototypal IPTS by taking as supply angular frequency the central solution of (18) whenever bifurcation is detected.…”

Section: Tsr Methodsmentioning

confidence: 99%

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Frequency Tuning in Inductive Power Transfer Systems

Bertoluzzo

Buja

2020

Electronics

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Inductive power transfer systems (IPTSs) systems are equipped with compensation networks that resonate at the supply frequency with the inductance of the transmitting and receiving coils to both maximize the power transfer efficiency and reduce the IPTS power sizing. If the network and coil parameters differ from the designed values, the resonance frequencies deviate from the supply frequency, thus reducing the IPTS efficiency. To cope with this issue, two methods of tuning the IPTS supply frequency are presented and discussed. One method is aimed at making resonant the impedance seen by the IPTS power supply, the other one at making resonant the impedance of the receiving stage. The paper closes by implementing the first method in an experimental setup and by testing its tuning capabilities on a prototypal IPTS used for charging the battery of an electric vehicle.

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Section: Tsr Methodsmentioning

confidence: 99%

“…Compensation networks composed of one or more reactive components and arranged according to several topologies have been proposed in the literature for the IPTSs [20][21][22]. The simplest compensation network uses a capacitor for each IPTS coil with either a series or parallel connection.…”

Section: Introductionmentioning

confidence: 99%

Frequency Tuning in Inductive Power Transfer Systems

Bertoluzzo

Buja

2020

Electronics

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“…According to the transconductance gain GCC (22) and the voltage gain GCV (28), the relationship between battery charging current, charging voltage, and source voltage of IPT system can be expressed as According to (24), the constant current output can make the secondary impedance pure resistance by the change of λ 3 . From Figure 8, when λ 3 equals 0.72 (marked as λ 3_R ), no matter what the values of λ 1 and λ 2 are, the input impedance is pure resistance, which means no reactive power in the IPT system.…”

Section: Parameters Analysismentioning

confidence: 99%

“…Although some have been used in aforementioned work, each has its own shortcomings. Since the LCC topology has three parameters design freedoms [24][25][26], it will be better to implement this by changing the components of the topology. This paper develops a new IPT charging method to meet various charging requirements, including five sections.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Compensation Topology for Battery Charging System Based on IPT Technology

Zhang

Liu

et al. 2019

Energies

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Based on the double-sided LCC (DLCC) compensation topology circuit, a battery charging method is proposed to meet various charging requirements. Firstly, mathematical model was obtained by modeling primary and secondary sides of DLCC. The current gain and voltage gain of the inductive power transfer (IPT) system are derived. Then, taking into account the smooth conversion of charging mode, the parameter configuration conditions for constant current (CC) output and constant voltage (CV) output are designed systematically. Finally, after choosing parameters, the CC and CV modes can be achieved by adding one switch and an auxiliary capacitor. With few additional components and non-sophisticated control, both cost and complexity can be significantly reduced. An experimental prototype with 64 V charging voltage and 1A charging current is built. The experimental results show that the charging voltage and current fluctuation of the system are small and the method can meet the above requirements.

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“…High efficiency and steady power transfer is the first and uppermost objectives for all IPT power applications. There are many studies to solve these problems, such as novel compensation topologies and parameters optimization [7], [8], magnetic couplers design for larger coupling coefficient [9]- [11], control techniques for obtaining desired output characteristics [12] and so on. Among these fields, compensation topology is essential for its determination of resonant frequency, power factor, output characteristics to achieve higher system efficiency, power density, and reliability.…”

Section: Introductionmentioning

confidence: 99%

An LCC-SP Compensated Inductive Power Transfer System and Design Considerations for Enhancing Misalignment Tolerance

Zhang

Cui

et al. 2020

IEEE Access

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This paper proposes a novel LCC-SP compensation topology for inductive power transfer (IPT) system and its tuning methods to enhance misalignment tolerance. The impedance condition and the constant current output characteristic of the newly proposed topology are analyzed, followed by a detailed derivation of compensation parameters based on the discussion about resonant tank. The realization of zero voltage switching (ZVS) and reactive power demand are discussed by theoretical deduction and numerical simulation. Then, the parameters detuning method to enhance misalignment tolerance is presented and it is found that a stable output current is maintained over a wide misalignment. Compared to traditional compensation topologies, the newly proposed compensation topology provides the advantages of easy achievement of ZVS, high design freedom and high misalignment tolerance. Finally, the IPT prototype with the LCC-SP compensation network is built and tested. The experimental results match well with the calculations, validating the correctness of theoretical analysis.

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Higher Order Compensation for Inductive-Power-Transfer Converters With Constant-Voltage or Constant-Current Output Combating Transformer Parameter Constraints

Cited by 188 publications

References 30 publications

Frequency Tuning in Inductive Power Transfer Systems

Frequency Tuning in Inductive Power Transfer Systems

A Hybrid Compensation Topology for Battery Charging System Based on IPT Technology

An LCC-SP Compensated Inductive Power Transfer System and Design Considerations for Enhancing Misalignment Tolerance

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