Design of CPT System With Multiple Constant Output Voltage Pickups Using Inverse Hybrid Parameters of Capacitive Coupler

Zhou, Wei; Gao, Qiao Zhuo; He, Lei; Luo, Bo

doi:10.1109/tia.2021.3109172

Cited by 14 publications

(6 citation statements)

References 26 publications

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“…Additionally, under ideal conditions, the currents flowing through the transmitting plates, Ia2 and Ib2 are constant. Substituting (11) into the secondary current Ic in (15), it is obtained that:…”

Section: Modelling Of Power Transmitting Circuitmentioning

confidence: 99%

“…By substituting (11), ( 12) and ( 16) into (17), the DC output voltage UL of the system can be derived as:…”

Section: Modelling Of Power Transmitting Circuitmentioning

confidence: 99%

“…voltage from the load variation [11], [12], [13], [14]. Additionally, for the impact of coupler disturbances, the output fluctuation can also be mitigated through the optimization of compensation network parameters [15], and specially shaped couplers such as ball-joint coupler is also helpful to get a relatively constant coupling parameters [16].…”

Section: Introductionmentioning

confidence: 99%

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Stabilization Control of Output Voltage for Segmented Dynamic Capacitive Power Transfer System Based on Partial Power Processing

Tang,

Zhou,

Zhang

et al. 2023

Preprint

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In the operation of dynamic capacitive power transfer (DCPT) systems, time-varying parameters can significantly impact the stability of the system’s output voltage. Achieving precise regulation of system through closed-loop controller becomes important. This paper presents a control method for DCPT systems based on partial power processing (PPP) technique. It achieves output voltage stability under various disturbances by processing only a fraction of the power. Firstly, this paper outlines the architecture of the PPP-based DCPT system and conducts system modeling. Based on the model, the influence of varying input voltage, coupling parameters, and load resistance on the open-loop output characteristics of the system is analyzed. Furthermore, the relationship between the duty cycle of the Boost converter, power ratio of the main/auxiliary channels, and output voltage is investigated after the controller's intervention. This analysis clarifies the control ability to regulate the output voltage. A 350W DCPT experimental prototype is established, demonstrating stable control of the system's output voltage at 100 V despite disturbances such as load variations within the range of 30-100 Ω, movement of the receiver between adjacent transmitting segments, and input voltage fluctuations of ±10%. When compared to a DCPT system with a cascaded DC-DC converter, the system’s efficiency is also improved by 0.7%~2.1% under different load conditions.

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Section: Modelling Of Power Transmitting Circuitmentioning

confidence: 99%

“…By substituting (11), ( 12) and ( 16) into (17), the DC output voltage UL of the system can be derived as:…”

Section: Modelling Of Power Transmitting Circuitmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Stabilization Control of Output Voltage for Segmented Dynamic Capacitive Power Transfer System Based on Partial Power Processing

Tang,

Zhou,

Zhang

et al. 2023

Preprint

Self Cite

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“…Previously, the MLCPT system could be divided into two types: MLCPT system with multiple cascaded repeaters 29,30 and MLCPT system with multiple receivers in parallel 31–33 . The MLCPT system with multiple cascaded repeaters usually contains a transmitter and multiple cascaded repeaters.…”

Section: Introductionmentioning

confidence: 99%

“…Previously, the MLCPT system could be divided into two types: MLCPT system with multiple cascaded repeaters 29,30 and MLCPT system with multiple receivers in parallel. [31][32][33] The MLCPT system with multiple cascaded repeaters usually contains a transmitter and multiple cascaded repeaters. In this system, each repeater receives power from the previous repeater and transfers power to the next repeater, and the load is connected to each repeater.…”

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confidence: 99%

A multi‐loads capacitive power transfer system for railway intelligent monitoring systems based on single relay plate

Zhang

Luo

Cheng

et al. 2023

Circuit Theory & Apps

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SummaryThis paper proposes a multi‐loads capacitive power transfer (CPT) system based on a single relay plate for railway monitoring systems. The proposed system can supply power wirelessly to the monitoring system on the trackside and train carriages simultaneously to eliminate traditional power cables connection and prevent frequent battery replacement. Unlike the traditional multiple loads CPT systems, the proposed system uses only one relay plate, which is more stable and uncomplicated considering the coupler installation space and moving dynamically in the railway system. The proposed system adopts a CL‐LCLC‐CL compensation network to achieve a load‐independent output. The limitation of the charging load quantity is given in detail considering the coupler voltage stress distribution. An experimental prototype with three loads is also built to verify the effectiveness of the proposed system. Experimental results show that the proposed system achieves wireless power transfer to multiple loads simultaneously with two loads on the receiver and one on the repeater side. The load‐independent property is also achieved when two loads are removed. The maximum experimental efficiency is about 87.13%.

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The Application Progress of Wireless Power Transfer in Space Utilization Field

Hu,

Li,

Dong

et al. 2024

Lecture Notes in Electrical Engineering

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Design of CPT System With Multiple Constant Output Voltage Pickups Using Inverse Hybrid Parameters of Capacitive Coupler

Cited by 14 publications

References 26 publications

Stabilization Control of Output Voltage for Segmented Dynamic Capacitive Power Transfer System Based on Partial Power Processing

Stabilization Control of Output Voltage for Segmented Dynamic Capacitive Power Transfer System Based on Partial Power Processing

A multi‐loads capacitive power transfer system for railway intelligent monitoring systems based on single relay plate

The Application Progress of Wireless Power Transfer in Space Utilization Field

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