Hybrid Topology With Configurable Charge Current and Charge Voltage Output-Based WPT Charger for Massive Electric Bicycles

Cui, Yang; Kou, Zhihao; Zhang, Youyuan; He, Zhengyou; Cao, Guangzhong

doi:10.1109/jestpe.2017.2782269

Cited by 97 publications

(67 citation statements)

References 29 publications

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“…[16] This Table 4 Comparison with compensation methods without using feedback controllers Proposed in Ref. [6] Ref. [7] Ref.…”

Section: Resultsmentioning

confidence: 99%

“…Electric bicycles (EBs) are becoming increasingly popular in many countries due to the advantages of convenience and long travelling distance. Taking China as an example, vehicle-sharing project, named as Sharing Electric Bicycles, is carried out all over the country [6], where the number of EBs is >250 million as expected at the end of 2018. Gradually, some researchers pay attention to IPT charging system (IPTCS) [6][7][8][9] for charging traditional EBs without physical contact, freeing people from wearisome plugging action and avoiding electric shock hazards.…”

Section: Introductionmentioning

confidence: 99%

“…Using compensation topologies for CC-CV charging [6,7,[18][19][20]: Some researchers focus on hybrid topologies and variable compensation parameters for charging batteries to reduce the cost of control schemes. In [6,[18][19][20], hybrid topologies combining topologies with CC outputs and topologies with CV outputs, are employed to realise CC-CV charging by turning on/off ac switches. Additionally, with the same compensation topologies, by altering the values of compensation parameters with ac switches for battery charging is proposed in [7].…”

Section: Introductionmentioning

confidence: 99%

“…Although these methods simplify the complexity of control schemes, additional ac switches and passive components are still needed for the functionality. Among [6,7,[18][19][20], the compensation method in [7] holds the minimum component number, i.e. three capacitors, one ac switch and one inductor array.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Cost‐effective inductive power transfer charging system for electric bicycles with variable charging current using primary‐side detuned series‐series topology

Cui

Kou

et al. 2019

IET Electric Power Applications

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Due to the convenience and long travelling distance, electric bicycles (EBs) are becoming more and more popular. Charging EBs with inductive power transfer (IPT) technology can free people from wearisome plugging actions and avoid electric shock hazards. However, the cost, including component cost and control cost, is a big challenge for the extensive promotion of the IPT charging systems (IPTCSs) for EBs. This article proposes an IPTCS using primary-side detuned seriesseries (SS) compensation topology, cancelling control scheme and reducing the component cost. With the proposed parametric design method, the IPTCS can operate with variable charging current according to the variable equivalent resistance of a battery. Besides, the inductive input impedance is guaranteed to achieve soft switching for the high-frequency inverter. An experimental setup is constructed to validate the proposed method. The performance shows that the charging current decreases from 1.8 to 0.1 A, and charging voltage increase from 42.23 to 54.01 V during the whole charging process, where the maximum efficiency of the IPTCS can reach up to 92.8%. The results demonstrate the proposed IPTCS is a cost-effective and potential solution for charging EBs.

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“…[16] This Table 4 Comparison with compensation methods without using feedback controllers Proposed in Ref. [6] Ref. [7] Ref.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cost‐effective inductive power transfer charging system for electric bicycles with variable charging current using primary‐side detuned series‐series topology

Cui

Kou

et al. 2019

IET Electric Power Applications

Self Cite

View full text Add to dashboard Cite

show abstract

“…Owing to the low EB charging accuracy requirements, the approximate CC/CV charging can be achieved without closed loop control as shown in the research review [9,[12][13][14][15][16][17]. The switching topologies between series-series (SS) and series-parallel (SP) topology are proposed in [12,13] to achieve both CC and CV charging modes.…”

Section: Introductionmentioning

confidence: 99%

Three‐coil structure‐based WPT system design for electric bike CC and CV charging without communication

Liu

Yang

2019

IET Electric Power Applications

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In comparison with the traditional plug-in charging systems for the electric bike (EB), wireless power transfer (WPT) systems have superior advantages of convenience and safety. Combining the application requirement range of the EB, this study proposes a three-coil structure-based WPT system in order to achieve ideal and reliable constant current (CC) output and constant voltage (CV) output without the need for a sophisticated control strategy and the real-time communication links between the transmitter and receiver sides. Two ac switches are utilised at the transmitter side to implement the change of charging mode from CC to CV. By correctly selecting the parameters of compensation components, the required loadindependent CC and CV characteristics with zero phase angle in the CC and CV modes can be achieved. Besides this, a load identification method based on the active power calculation used to estimate the equivalent resistance of the battery in the whole charging process, is utilised to judge the switching point from CC to CV mode. Finally, the feasibility of the method is verified through the construction of a laboratory platform with a 3.3 A charging current and a 57 V charging voltage.

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A reconstructed LCC‐LCC compensated inductive power transfer system with inherent constant current to constant voltage transition capability

Sheng

Yang

Wang

et al. 2023

Circuit Theory & Apps

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SummaryDue to the merits of convenience and flexibility, inductive power transfer (IPT) systems have become popular for energy storage devices, such as lithium‐ion batteries, which require constant current (CC) and constant voltage (CV) outputs. The conventional LCC‐LCC topology with high design freedom is widely used for battery charging. The conventional LCC‐LCC topology achieves the initial CC output and the subsequent CV output by reconfiguring its topology or hopping its operating frequency, which increases the control complexity. This paper proposes a reconstructed LCC‐LCC compensated IPT system, which can achieve the inherent CC‐to‐CV transition without extra components and control methods. Compared with the conventional LCC‐LCC topology having CC and CV outputs, the operating frequency and topology of the proposed IPT system are fixed. Besides, the battery state of charge (SOC) detection and wireless communication are not required. The analysis and parameters design of the proposed IPT system is performed. Finally, an experimental prototype of the proposed IPT system with 48 V input and 72 V/2 A output is built to validate the proposal.

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Hybrid Topology With Configurable Charge Current and Charge Voltage Output-Based WPT Charger for Massive Electric Bicycles

Cited by 97 publications

References 29 publications

Cost‐effective inductive power transfer charging system for electric bicycles with variable charging current using primary‐side detuned series‐series topology

Cost‐effective inductive power transfer charging system for electric bicycles with variable charging current using primary‐side detuned series‐series topology

Three‐coil structure‐based WPT system design for electric bike CC and CV charging without communication

A reconstructed LCC‐LCC compensated inductive power transfer system with inherent constant current to constant voltage transition capability

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