Detection of the Tuned Point of a Fixed-Frequency <i>LCL</i> Resonant Power Supply

Kissin, M.L.G.; Huang, Chang-Yu; Covic, Grant A.; Boys, J.T.

doi:10.1109/tpel.2008.2011641

Cited by 103 publications

(33 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, a self-tuning at the receiver is still inevitable to avoid the incurred reactive power increase at the transmitter side [11]. Another work in [38] assumes that all the receivers coupled to the transmitter are perfectly tuned and studies the effect of tuning at the transmitter. On the other hand, employing LCL compensation at the receiver side as proposed in [16] and [39] has already reported the sensitivity of the output voltage to variations in the compensation components.…”

Section: Comparison With Other Solutions In the Literaturementioning

confidence: 99%

Insights into Dynamic Tuning of Magnetic-Resonant Wireless Power Transfer Receivers Based on Switch-Mode Gyrators

Saad

Alarcón

2018

Energies

View full text Add to dashboard Cite

Magnetic-resonant wireless power transfer (WPT) has become a reliable contactless source of power for a wide range of applications. WPT spans different power levels ranging from low-power implantable devices up to high-power electric vehicles (EV) battery charging. The transmission range and efficiency of WPT have been reasonably enhanced by resonating the transmitter and receiver coils at a common frequency. Nevertheless, matching between resonance in the transmitter and receiver is quite cumbersome, particularly in single-transmitter multi-receiver systems. The resonance frequency in transmitter and receiver tank circuits has to be perfectly matched, otherwise power transfer capability is greatly degraded. This paper discusses the mistuning effect of parallel-compensated receivers, and thereof a novel dynamic frequency tuning method and related circuit topology and control is proposed and characterized in the system application. The proposed method is based on the concept of switch-mode gyrator emulating variable lossless inductors oriented to enable self-tunability in WPT receivers.

show abstract

Section: Comparison With Other Solutions In the Literaturementioning

confidence: 99%

Insights into Dynamic Tuning of Magnetic-Resonant Wireless Power Transfer Receivers Based on Switch-Mode Gyrators

Saad

Alarcón

2018

Energies

View full text Add to dashboard Cite

show abstract

“…Due to soft switching requirements, the switching frequency should dynamically change according to the inherent frequency variation of the resonant tank. It should be noted that the inherent frequency is also an uncertain parameter affected by the mutu1al inductance, the load, and other parameters [9]. These multiple uncertain parameters will greatly increase the complexity of the system behaviors.…”

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

View full text Add to dashboard Cite

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.

show abstract

“…The hybrid topology on the primary side is proposed in [6], and can switch between two basic compensation networks to satisfy the constant voltage (CV) and constant current (CC) modes for stationary electric vehicle (EV) charging. In [7][8][9], it is pointed out that LCL type topology can allow the current of the transmitting coil to present a constant current source characteristic, and is suitable To simplify the analysis, Figure 1 can be equivalent to a simple model as shown in Figure 2. Among them, U in and U O is the input and output direct current (DC) voltage, U 1 and U 2 are the root-mean-square (RMS) values of the output voltage of the high frequency inverter and input voltage of the diode rectifier filter circuit, I 1 and I 2 are the RMS values of the output current of the high frequency inverter and input current of the diode rectifier filter circuit.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Compensation Capacitance Errors of a Wireless Power Transfer System with SS Topology

et al. 2017

View full text Add to dashboard Cite

Abstract:In this study, in order to determine the reasonable accuracy of the compensation capacitances satisfying the requirements on the output characteristics for a wireless power transfer (WPT) system, taking the series-series (SS) compensation structure as an example, the calculation formulas of the output characteristics, such as the power factor, output power, coil transfer efficiency, and capacitors' voltage stress, are given under the condition of incomplete compensation according to circuit theory. The influence of compensation capacitance errors on the output characteristics of the system is then analyzed. The Taylor expansions of the theoretical formulas are carried out to simplify the formulas. The influence degrees of compensation capacitance errors on the output characteristics are calculated according to the simplified formulas. The reasonable error ranges of the compensation capacitances are then determined according to the requirements of the output characteristics of the system in the system design. Finally, the validity of the theoretical analysis and the simplified processing is verified through experiments. The proposed method has a certain guiding role for practical engineering design, especially in mass production.

show abstract

Detection of the Tuned Point of a Fixed-Frequency LCL Resonant Power Supply

Cited by 103 publications

References 13 publications

Insights into Dynamic Tuning of Magnetic-Resonant Wireless Power Transfer Receivers Based on Switch-Mode Gyrators

Insights into Dynamic Tuning of Magnetic-Resonant Wireless Power Transfer Receivers Based on Switch-Mode Gyrators

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

Analysis of the Influence of Compensation Capacitance Errors of a Wireless Power Transfer System with SS Topology

Contact Info

Product

Resources

About