Hybrid IPT Topologies With Constant Current or Constant Voltage Output for Battery Charging Applications

Qu, Xiaohui; Han, Hongdou; Wong, Siu-Chung; Tse, Chi K.; Chen, Wu

doi:10.1109/tpel.2015.2396471

Cited by 396 publications

(204 citation statements)

References 24 publications

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“…In this paper, the constant-current/constant-voltage (CC/CV) charging method shown in Fig. 2 is used to charge each battery [24][25][26][27]. The charging process of each battery in the developed circuit can be independently controlled by the corresponding active switch.…”

Section: Circuit Configuration Of Proposed Chargermentioning

confidence: 99%

Interleaved PFC balance charger with passive lossless snubber for series-connected batteries

Chen

et al. 2019

IEICE Electron. Express

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An interleaved balance charger for four series-connected batteries is proposed in this study. Each battery can be charged individually in the proposed charger for balance charging process. The charger is operated in the discontinuous conduction mode (DCM) for power factor correction (PFC). Two flyback and two buckboost converters are input parallel-connected and controlled with multi-phase interleaving technique. The input current ripple is then greatly reduced. Each flyback converter is used to convert the charging power from the grid to one corresponding battery. The two buckboost converters are output parallel-connected and followed by a dual output converter. Two batteries in the series-connected battery tank are charged by the dual output converter. Moreover, a passive lossless snubber is proposed to recover the leakage inductance energy in the flyback converters. A 500W prototype is constructed and corresponding experiments are carried out. From the experimental results, it can be seen that the efficiency is improved by about 3% compared with the topology with common RCD snubbers. The measured power factor of the proposed charger is higher than 0.976.

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Section: Circuit Configuration Of Proposed Chargermentioning

confidence: 99%

Interleaved PFC balance charger with passive lossless snubber for series-connected batteries

Chen

et al. 2019

IEICE Electron. Express

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“…Qu et al proposed the hybrid topology shown in Figure 9 for load independent constant-current (CC) and constant-voltage (CV) charging profiles for lithium ion batteries which are used in EVs [48]. At resonant frequency, the S-S topology gives load-independent output current and zero phase angle (ZPA) between the input voltage and current [49].…”

Section: Some Of the New Topologies Reported Until Nowmentioning

confidence: 99%

“…At resonant frequency, the S-S topology gives load-independent output current and zero phase angle (ZPA) between the input voltage and current [49]. Similarly in [48], conditions in P-S topology for load-independent output voltage and ZPA between input voltage and current are derived. A combination of S-S and P-S topologies as shown in Figure 9, which results in load-independent CC, CV and ZPA between the input current and voltage, even at fixed frequency.…”

Section: Some Of the New Topologies Reported Until Nowmentioning

confidence: 99%

Review on Contactless Power Transfer for Electric Vehicle Charging

Ravikiran

Keshri

2017

Energies

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Abstract:For the past few years the feasibility of contactless power transfer (CPT) is being explored extensively as a future solution for charging electric vehicles (EVs). Studies report that the main obstacles in CPT are low power efficiency, misalignment tolerance, cost, range and charging time anxiety. This paper presents a review based on existing literature of the CPT systems for EV charging. Different cases of CPT technologies, their principle of operation and equivalent circuit based analysis is carried out. A discussion on compensation strategies and their effectiveness are reviewed and discussed. The design of coil systems for some city electric cars has been referenced in general. At the end recommendations and conclusions are made based on the study and analysis of the information available in literature.

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“…Different devices can be charged by WPT system, and the load values of these devices are different. Even for charging the same device, its battery equivalent resistance changes drastically as the charging process goes from constant current mode to constant voltage mode [9]. To provide more convenience for users, a receiver can be located with spatial freedom, which means the relative location of transmitter and receiver changes, thus resulting in mutual inductance variations.…”

Section: Introductionmentioning

confidence: 99%

Detecting Load Resistance and Mutual Inductance in Series-Parallel Compensated Wireless Power Transfer System Based on Input-Side Measurement

Sun

et al. 2018

International Journal of Antennas and Propagation

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In wireless power transfer (WPT) system, the variations in load resistance and mutual inductance influence the output voltage and output current, making the system deviate from its desirable operating condition; hence, it is essential to monitor load resistance and mutual inductance. Using input-side measurement to detect load resistance and mutual inductance has great advantages, because it does not need any direct measurements on the receiving side. Therefore, it can remove sensors on the receiving side and eliminate communication system feeding back the load measurements. This paper investigates load resistance and mutual inductance detection method in series-parallel compensated WPT system. By measuring input current and input voltage, the equation for calculating load resistance is deduced; when the operating frequency is lower than or equal to the receiving-side resonant frequency, the rigorous mathematical derivations prove that load resistance can be uniquely determined by using only one measurement of input current and input voltage. Furthermore, the analytical expressions for identifying load resistance and mutual inductance are deduced. Experiments are conducted to verify the proposed method.

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Hybrid IPT Topologies With Constant Current or Constant Voltage Output for Battery Charging Applications

Cited by 396 publications

References 24 publications

Interleaved PFC balance charger with passive lossless snubber for series-connected batteries

Interleaved PFC balance charger with passive lossless snubber for series-connected batteries

Review on Contactless Power Transfer for Electric Vehicle Charging

Detecting Load Resistance and Mutual Inductance in Series-Parallel Compensated Wireless Power Transfer System Based on Input-Side Measurement

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