A New Inductive Power Transfer Topology Using Direct AC–AC Converter With Active Source Current Waveshaping

Samanta, Suvendu; Rathore, Akshay Kumar

doi:10.1109/tpel.2017.2750081

Cited by 63 publications

(23 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the above, when the soft-switching technique is applied to the converters in IPT systems, it is necessary to consider the influences caused by soft-switching operation. However, in previous works, these influences have not been clarified, and the resonant circuit and the system have not been able to be operated in high efficiency [9,15,19,20]. Therefore, in this paper, the influences on the efficiency of the resonant circuit caused by soft-switching operation are clarified by the theoretical analysis and experiments.…”

Section: Introductionmentioning

confidence: 90%

“…There is an adjustment method for supply and demand balance in a power system by utilizing the batteries on electric vehicles (EVs) as a part of energy storage systems [1][2][3][4][5]. In that case, these systems can be safe and maintainable by using bi-directional inductive power transfer (IPT) systems as battery chargers for EVs [1,2,[6][7][8][9][10][11]. However, IPT systems have a problem in that the power loss is larger than that of wired plug-in charging systems.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, the maximum-efficiency-tracking method for the resonant circuit [2,[7][8][9][12][13][14][15], the design method for the resonant circuit [2,11,16], the switching frequency control method for the secondary-side converter [14,17], and the soft-switching technique [9,15,[18][19][20] were proposed as the efficiency improvement method for IPT systems. In general IPT systems, much electromagnetic noise and power loss occur because the converters of IPT systems are driven in high switching frequency by tens of kHz.…”

Section: Introductionmentioning

confidence: 99%

“…In general IPT systems, much electromagnetic noise and power loss occur because the converters of IPT systems are driven in high switching frequency by tens of kHz. For these problems, there is a case where the soft-switching technique needs to be applied to the converters of IPT systems [9,15,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Consideration on Maximum Efficiency of Resonant Circuit of Inductive Power Transfer System with Soft-Switching Operation

Ota

Nugroho

Hoshi

2019

WEVJ

View full text Add to dashboard Cite

By using bi-directional inductive power transfer (IPT) systems as battery chargers for electric vehicles (EVs), battery charging operations become convenient and safe. However, IPT systems have problems such as occurrences of much electromagnetic noise and power loss because the converters of IPT systems are driven in high frequency by tens of kHz. To solve these problems, there is a case where the soft-switching technique needs to be applied to the converters of IPT systems. However, in soft-switching operation, the power factor of the resonant circuit becomes lower, resulting in a lower resonant circuit efficiency. In previous works, when the soft-switching technique was applied to the converters, the resonant circuit had not always been able to be operated with high efficiency because the influence caused by soft-switching operation had not been considered. For this reason, there was a case where the efficiency of the overall system with soft-switching operation became lower than the efficiency in hard-switching operation. Therefore, in this paper, the influence on the efficiency of the resonant circuit caused by the soft-switching operation is clarified by the theoretical analysis and experiments; then, the guideline for improving the efficiency of IPT systems is shown. As a result, in the experiments, it could be understood that the efficiency of the overall system with soft-switching operation becomes higher than the efficiency in hard-switching operation when the operating point of the resonant circuit was close to the requirement guideline, which is shown by using the primary-side voltage and the secondary-side voltage of the resonant circuit. Therefore, it is suggested that the efficiency of IPT systems could be improved by properly regulating the primary-side direct current (DC) voltage.

show abstract

Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Consideration on Maximum Efficiency of Resonant Circuit of Inductive Power Transfer System with Soft-Switching Operation

Ota

Nugroho

Hoshi

2019

WEVJ

View full text Add to dashboard Cite

show abstract

“…In recent years, electric vehicles (EVs) charging through wireless power transfer (WPT) are getting popularised [1][2][3][4][5][6][7]. In general, the most commonly used batteries in EVs are lithium-ion or lead-acid batteries.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

Ravikiran

Keshri

2020

IET Electric Power Applications

View full text Add to dashboard Cite

This study proposes a reconfigurable wireless charging topology, which achieves load-independent constant current (CC) and constant voltage (CV) output without any communication link between transmitting and receiving coils. The proposed topology is suitable for CC-CV modes of battery charging. Inductor (L), capacitor (C) and inductor (L) connected as T type (LCL) compensation with an auxiliary capacitor on the transmitting side and series (S) compensation on the receiving side (LCL-S) is used to achieve load-independent CC and CV output. Reconfiguration has been achieved using single AC switch on transmitting side. Control has been implemented with the information on transmitting side. Load-independent CC and CV output operations have been analysed analytically. The merits of the proposed topology are fixed-frequency operation, simplified control scheme for load-independent CC-CV operation without any communication link. Feasibility of the proposed topology is verified by the experimental prototype with a CC output of 12 A and CV output of 56 V.

show abstract

A single‐phase p‐type ac–ac converter with reduced components count and high boost factor

Abdoli

Hajiabadi

Mosallanejad

et al. 2022

Circuit Theory & Apps

View full text Add to dashboard Cite

This paper proposes a new single‐phase direct step‐up ac–ac converter by modifying the p‐type impedance source. It provides a high boost factor as well as high efficiency, while only six parts are required to design it, involving just two bidirectional power switches. A safe commutation method has been applied to power switches to make the converter snubber‐free and high efficient. Input and output harmonic filters are no longer required since input and output currents variate continuously with small ripple and low total harmonic distortion (THD). The proposed topology only modulates the output voltage amplitude, not the phase and frequency, so the output frequency is identical to the input frequency and constant. Thus, it can be utilized in step‐up conversion applications, like inductive power transmission from low ac voltage sources. Input and output have the same ground, which is a good protective feature. In this paper, the operating principle of the converter is demonstrated. Experimental results have been represented to evaluate the performance of the converter. For this purpose, an experimental prototype has been fabricated. Results are investigated and compared with other previous step‐up ac–ac converters. Results confirm the theory, operating principle, and performance of the converter.

show abstract

A New Inductive Power Transfer Topology Using Direct AC–AC Converter With Active Source Current Waveshaping

Cited by 63 publications

References 38 publications

A Consideration on Maximum Efficiency of Resonant Circuit of Inductive Power Transfer System with Soft-Switching Operation

A Consideration on Maximum Efficiency of Resonant Circuit of Inductive Power Transfer System with Soft-Switching Operation

Reconfigurable WPT system for load‐independent CC and CV output with transmitting‐side control

A single‐phase p‐type ac–ac converter with reduced components count and high boost factor

Contact Info

Product

Resources

About