Design of a Reflex-Based Bidirectional Converter With the Energy Recovery Function

Chen, Liang-Rui; Chu, Neng-Yi; Wang, Chau‐Shing; Liang, Rung-Huei

doi:10.1109/tie.2008.918609

Cited by 98 publications

(14 citation statements)

References 19 publications

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“…As can be seen, the voltage conversion ratio in discharge state is four times of that of the conventional boost converter. Figure 11 shows that the studied BDC demands a smaller duty cycle for the active switches to produce the same voltage conversion ratio, or can produce a higher voltage conversion ratio at the same duty cycle when compared with the traditional BDC [18] and the previous BDC in [22]. Furthermore, the voltage conversion ratio of studied BDC is higher than that of the BDC proposed in [23], under a reasonable range of 25%~75% duty cycles.…”

Section: Voltage Conversion Ratiomentioning

confidence: 93%

“…Usually, in dc-microgrid systems, when the voltage difference between the EV battery, BES and the dc-bus is large, a bidirectional dc/dc converter (BDC) with a high voltage conversion ratio for both buck and boost operations is required [4,7]. In the previous literatures, BDCs circuit topologies of the isolated [8][9][10] and non-isolated type [11][12][13][14][15][16][17][18][19][20][21][22][23] have been described for a variety of system applications. Isolated BDCs use the transformer to implement the galvanic isolation and to comply with the different standards.…”

Section: Introductionmentioning

confidence: 99%

“…In [18], a traditional buck-boost BDC was adopted, however, the voltage conversion ratio is limited because of the equivalent series resistance (ESR) of the inductors and capacitors and effect of the active switches [19]. Circuit structure of the bidirectional double-boost cascaded topology [17].…”

Section: Introductionmentioning

confidence: 99%

“…In [18], a traditional buck-boost BDC was adopted, however, the voltage conversion ratio is limited because of the equivalent series resistance (ESR) of the inductors and capacitors and effect of the active switches [19]. Compared with isolated types, BDCs with coupled-inductors for non-isolated applications possess simpler winding structures and lower conduction losses [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…Chen et al [18] proposed a reflex-based BDC to achieve the energy recovery function for batteries connected to a low-voltage micro dc-bus system. In [18], a traditional buck-boost BDC was adopted, however, the voltage conversion ratio is limited because of the equivalent series resistance (ESR) of the inductors and capacitors and effect of the active switches [19].…”

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Bidirectional DC/DC Converter Topology with High Voltage Conversion Ratio for Electric Vehicles and DC-Microgrids

Lai

2016

Energies

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Abstract:The main objective of this paper was to study a bidirectional direct current to direct current converter (BDC) topology with a high voltage conversion ratio for electric vehicle (EV) batteries connected to a dc-microgrid system. In this study, an unregulated level converter (ULC) cascaded with a two-phase interleaved buck-boost charge-pump converter (IBCPC) is introduced to achieve a high conversion ratio with a simpler control circuit. In discharge state, the topology acts as a two-stage voltage-doubler boost converter to achieve high step-up conversion ratio (48 V to 385 V). In charge state, the converter acts as two cascaded voltage-divider buck converters to achieve high voltage step-down conversion ratio (385 V to 48 V). The features, operation principles, steady-state analysis, simulation and experimental results are made to verify the performance of the studied novel BDC. Finally, a 500 W rating prototype system is constructed for verifying the validity of the operation principle. Experimental results show that highest efficiencies of 96% and 95% can be achieved, respectively, in charge and discharge states.

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Section: Voltage Conversion Ratiomentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In [18], a traditional buck-boost BDC was adopted, however, the voltage conversion ratio is limited because of the equivalent series resistance (ESR) of the inductors and capacitors and effect of the active switches [19]. Compared with isolated types, BDCs with coupled-inductors for non-isolated applications possess simpler winding structures and lower conduction losses [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Development of a Novel Bidirectional DC/DC Converter Topology with High Voltage Conversion Ratio for Electric Vehicles and DC-Microgrids

Lai

2016

Energies

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A bidirectional DC/DC converter charge/discharge controller for solar energy illumination system integrating synchronous rectification SEPIC converter and active clamp flyback converter

Huang

2015

Circuit Theory & Apps

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This paper presents a novel bidirectional DC-to-DC converter charge/discharge controller for solar energy illumination system. The bidirectional converter architecture integrates the synchronous rectification Single Ended Primary Inductor Converter (SEPIC) converter and an active clamp flyback converter. In addition to fully use the properties of the shared components and compensate for the shortcomings of conventional two-stage illumination systems, the proposed system has the advantages of soft-switching, simple structure, and high efficiency. During daytime, a SEPIC converter with synchronous rectification function was used to charge the lead acid battery through three-stage charging and maximum power point tracking. At night, the battery discharges, driving and dimming high-brightness LEDs using the active clamp flyback converter. Finally, a solar energy illumination system with both a 160 W charge/discharge controller and an 80 W LED driver was implemented to verify the feasibility and practicality of the proposed system. Figure 5. Operation principles of the synchronous rectification SEPIC converter: (a) operation mode 1, (b) operation mode 2, and (c) operation mode 3. DPDT, double-pole double-throw.Equation 13 describes the step-up mode when D > 0.5 and the step-down mode when D < 0.5. The range of V pv in the currently proposed system is 20-36 V, and the battery output is 24 V. 310 a. Conduction loss:Overall efficiency curve of the synchronous rectification SEPIC converter. Figure 15. V gs1 /V ds1 and V ds2 /V gs2 waveforms of S 1 and S 2 of the active clamp flyback converter. 26. Chen M, Rincon-Mora GA. Accurate electrical battery model capable of predicting runtime and I-V performance. IEEE Transactions on Energy Conversion 2006; 21 (2):504-511. 27. Oh IH. An analysis of current accuracies in peak and hysteretic current controlled power LED drivers.

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Design and control of a reconfigurable high‐gain battery integrated dc‐dc boost converter for time‐varying loads

Saxena

Kumar

2020

Circuit Theory & Apps

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In this paper, a reconfigurable, low component count high-gain battery integrated dc-dc boost converter (HGBIBC) is proposed for power management of time-varying loads (TVLs). The battery is integrated between the two switches and the two diodes, which provides an inherent feature of pulse-charging and pulse-discharging of the battery, thereby increasing its lifetime. The converter operation, in various modes, is explained, and the steady-state and timedomain analyses are performed to establish the high-voltage gain feature of the converter, which makes it suitable for interfacing sources with low output voltages. The guidelines for the design of converter parameters and selection of switching devices are presented. Small-signal models are derived, and the relative gain array (RGA) analysis is performed, which revealed that the control loops are of decoupled nature and hence the controllers, for each loop, can be designed independently, as in the case of a single-input single-output (SISO) converter. The PID controllers are designed to simultaneously regulate the load voltage and source current. The theoretical concepts developed in the paper are validated experimentally using the laboratory prototype of the converter. The experimental results, demonstrating power management, at load voltages of 60 and 48 V are presented, which are found to be in close correlation with the theoretical and simulation studies. K E Y W O R D S battery integrated converters, battery power management, battery pulse charging (BPC), battery pulse discharging (BPD), high-gain boost converter, multiport converter

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Design of a Reflex-Based Bidirectional Converter With the Energy Recovery Function

Cited by 98 publications

References 19 publications

Development of a Novel Bidirectional DC/DC Converter Topology with High Voltage Conversion Ratio for Electric Vehicles and DC-Microgrids

Development of a Novel Bidirectional DC/DC Converter Topology with High Voltage Conversion Ratio for Electric Vehicles and DC-Microgrids

A bidirectional DC/DC converter charge/discharge controller for solar energy illumination system integrating synchronous rectification SEPIC converter and active clamp flyback converter

Design and control of a reconfigurable high‐gain battery integrated dc‐dc boost converter for time‐varying loads

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