A Low-Voltage and High-Current Inductive Power Transfer System With Low Harmonics for Automatic Guided Vehicles

Lu, Fei; Zhang, Yiming; Zhang, Hua; Zhu, Chong; Diao, Lijun; Gong, Minming; Zhang, Weige; Mi, Chris

doi:10.1109/tvt.2019.2898418

Cited by 46 publications

(13 citation statements)

References 41 publications

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“…In the last decades, several methods have been investigated for the low-voltage and high-current power supply system, e.g., LEVs charging application to achieve a high power transfer efficiency [13], [14], [18], [19]. In [13], the dual-receiver-system with a DC-DC converter is adopted, which results in a low overall system efficiency.…”

Section: E Comparison With the Other Low-voltage And High-current Out...mentioning

confidence: 99%

“…Besides, the volume of the receiver is also sacrificed due to the utilization of additional DC-DC converter. In [14], the series-series (S-S) compensation network is used in the 24V-75A output WPT system with ~89.9% efficiency. However, the multi-strands-paralleled Litz-wire in the receiver coil increases the cost and the weight of the magnetic coupler.…”

Section: E Comparison With the Other Low-voltage And High-current Out...mentioning

confidence: 99%

“…While using WPT technology to charge LEVs, several key features need to be considered: 1) To satisfy the voltage class and shorten the charging time, the low-voltage and high-current power supply system is required [14], [18], which is typically 24V/36V/48V and more than 50A; 2) LEVs are so compact that the installation space of which is small, hence the coil size of the WPT system is limited [13], [16]; 3) The heat dispersion of the receiver side in such a compact space is a severe issue with the required high charging current and high operating frequency [14], [17], [18].…”

Section: Introductionmentioning

confidence: 99%

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Efficiency Improvement of Dual-Receiver WPT Systems Based on Partial Power Processing Control

Liu

Zhao

et al. 2022

IEEE Trans. Power Electron.

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Section: E Comparison With the Other Low-voltage And High-current Out...mentioning

confidence: 99%

Section: E Comparison With the Other Low-voltage And High-current Out...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Efficiency Improvement of Dual-Receiver WPT Systems Based on Partial Power Processing Control

Liu

Zhao

et al. 2022

IEEE Trans. Power Electron.

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“…Instead of changing θ to get a CV of V ac1 in conventional dynamic IPT system, the proposed system introduces a boost converter in the front to regulate and increases the input voltage in the H-bridge resonant inverter. According to (2), it also enhances V ac in a reasonable condition to compensate the voltage loss caused by the reducing θ to implement the smaller I ac .…”

Section: (B)mentioning

confidence: 99%

“…So the magnetic field is relatively stationary in the application. In [2]- [5], the mutual inductance M is calculated at stationary for dynamic IPT system. Therefore, the influence of velocity on M is ignored in this paper.…”

Section: Design Process and Calculating Example A Proposed Systmentioning

confidence: 99%

Total Harmonic Distortion and Output Current Optimization Method of Inductive Power Transfer System for Power Loss Reduction

Zhang

Luo

et al. 2020

IEEE Access

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Inductive power transfer (IPT) system is widely used in material handling. A typical structure of the system takes an H-bridge inverter with an inductor-capacitor-inductor (LCL) resonant filter to realize a constant track current supplying changeless energy to the second side. However, the output voltage total harmonic distortion (THD) of the inverter increases, which causes the increase of output current circulation, when using voltage width control method to eliminate source voltage fluctuating. Therefore, a two-stage converter is proposed to optimize the output current circulation. The two-stage IPT system is composed of a boost converter cascaded with an H-bridge resonant inverter. The boost converter is employed to provide a higher and stable DC bus voltage. The H-bridge resonant inverter operates in a fixed width with a constant switching frequency. With the proposed topology, the THD of the high frequency voltage maintains the minimum value to realize minimum output current circulation in the LCL filter. The soft switching is realized to reduce the losses. Furthermore, expressions of coil and track model are presented by combining the theoretical analysis and finite element analysis (FEA). The experimental results show that over 76.6% efficiency is demonstrated in conditions of an 800 W load at the 14% source voltage fluctuation and the maximum efficiency was 78.6 %. The range of efficiency variation was 2% compared to a full-bridge system with voltage pluse-width control of which was 4.6%. INDEX TERMS Inductive power transfer (IPT), material handling, THD optimization, soft switching, finite element analysis (FEA).

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Efficiency optimization for LCC‐LC compensated inductive coupling power transfer system with load‐independent zero‐phase‐angle and constant voltage output

Pan

et al. 2023

Circuit Theory & Apps

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SummaryHigh‐order compensation for the inductive coupling power transfer (ICPT) system is preferred due to its high design freedom and excellent coil current harmonics suppression capability. Especially, the good harmonics suppression capability is helpful to implement the synchronous wireless transfer of energy and data with a pair of data communication coils integrated into the energy transfer coils. Thus, on basis of THD1 and THD2 comparison for different high‐order compensation topologies, the LCC‐LC compensated ICPT system with load‐independent zero phase angle (ZPA) and constant voltage output is discussed in this paper. Compared with other high‐order compensation topologies with constant voltage output such as LC‐LC, LC‐LCC, and LCC‐LCC, the LCC‐LC has the advantages of ZPA operation with zero voltage switching and less secondary‐side components. For a given magnetic coupler, infinite feasible combinations of compensation parameters can make the system accomplish ZPA and the same output characteristics. Thus, efficiency optimization of the LCC‐LC compensated ICPT system can be investigated by configuring the optimal compensation parameters. To validate the theoretical analysis, especially the efficiency improvement, the experimental platform with 270 V input and 270 V/3 kW output is designed and built. The comparative experimental results for three different the compensation parameters show the optimized system can improve greatly conversion efficiency over the entire load range, especially under light load.

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A Low-Voltage and High-Current Inductive Power Transfer System With Low Harmonics for Automatic Guided Vehicles

Cited by 46 publications

References 41 publications

Efficiency Improvement of Dual-Receiver WPT Systems Based on Partial Power Processing Control

Efficiency Improvement of Dual-Receiver WPT Systems Based on Partial Power Processing Control

Total Harmonic Distortion and Output Current Optimization Method of Inductive Power Transfer System for Power Loss Reduction

Efficiency optimization for LCC‐LC compensated inductive coupling power transfer system with load‐independent zero‐phase‐angle and constant voltage output

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