A New Resonant Bidirectional DC–DC Converter Topology

Twiname, Ross P.; Thrimawithana, Duleepa J.; Madawala, Udaya K.; Baguley, Craig

doi:10.1109/tpel.2013.2288325

Cited by 94 publications

(28 citation statements)

References 19 publications

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“…Figure 2 shows different states of the CLTC multi-resonant converter. In Figure 2, i Lm1 is excitation current of transformer T 1 on HVS, i' Lm1 is excitation current of transformer T 1 on LVS, i Lr is current of resonant inductor, i Cr1 and i Cr2 are currents of resonant capacitors on HVS and LVS, u GS14 is the driving signal of S 1 and S 4 , u GS23 is the driving signal of S 2 and S 3 , u GS58 is the driving signal of S 5 and S 8 , u GS67 is the driving signal of S 6 and S 7 , u DS14 is the drain-source voltage of S 1 and S 4 , u DS23 is the drain-source voltage of S 2 and S 3 , u DS58 is the drain-source voltage of S 5 and S 8 , u DS67 is the drain-source voltage of S 6 and S 7 , i DS14 is the drain-source current of S 1 and S 4 , i DS23 is the drain-source current of S 2 and S 3 , i DS58 is the drain-source current of S 5 and S 8 , i DS67 is the drain-source current of S 6 and S 7 .…”

Section: Operation Principles and Characteristic Descriptionmentioning

confidence: 99%

“…The resonant current on LVS charges the output capacitor of S 6 and S 7 , and discharges the output capacitor of S 5 and S 8 . After that, the LVS current passes through the antiparallel diode of S 5 …”

Section: Backward Modementioning

confidence: 99%

“…With advantage of ZVS + ZCS, the bidirectional resonant DC-DC converter (BRDC) is gaining more attention in DC distribution system or DC microgrid applications [1][2][3][4][5][6][7][8]. All the power switching devices, including metal oxide semiconductor field effect transistor (MOSFET) switches and diodes have the desirable soft-switching features, and the switching loss is greatly decreased.…”

Section: Introductionmentioning

confidence: 99%

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Studies on a Hybrid Full-Bridge/Half-Bridge Bidirectional CLTC Multi-Resonant DC-DC Converter with a Digital Synchronous Rectification Strategy

et al. 2018

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This study presents a new bidirectional multi-resonant DC-DC converter, which is named CLTC. The converter adds an auxiliary transformer and an extra resonant capacitor based on a LLC resonant DC-DC converter, achieving zero-voltage switching (ZVS) for the input inverting switches and zero-current switching (ZCS) for the output rectifiers in all load range. The converter also has a wide gain range in two directions. When the load is light, a half-bridge configuration is adopted instead of a full-bridge configuration to solve the problem of voltage regulation. By this method, the voltage gain becomes monotonous and controllable. Besides, the digital synchronous rectification strategy is proposed in forward mode without adding any auxiliary circuit. The conduction time of synchronous rectifiers equals the estimation value of body diodes' conduction time with the lightest load. Power loss analysis is also conducted in different situations. Finally, the theoretical analysis is validated by a 5 kW prototype.

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Section: Operation Principles and Characteristic Descriptionmentioning

confidence: 99%

Section: Backward Modementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Studies on a Hybrid Full-Bridge/Half-Bridge Bidirectional CLTC Multi-Resonant DC-DC Converter with a Digital Synchronous Rectification Strategy

et al. 2018

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“…This shows that at the switching frequency and in steady-state i 1 is decoupled from v 1 and i 2 is decoupled from v 2 . The relationships between the voltages and currents in (16) and (17) are shown in Fig. 5 as a phasor diagram.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…In [12], [16] it has been shown that power transfer mainly occurs at the fundamental frequency of the tuned resonant circuit and therefore the modeling and analysis of the AC subsystem will be done at the fundamental frequency. Since the state variables are assumed to be sinusoidal at the fundamental frequency the following equations can represent the AC states.…”

Section: Modelingmentioning

confidence: 99%

Modeling and control of a CLC Resonant Dual Active Bridge

Malan

Vilathgamuwa

Walker

et al. 2014

2014 Australasian Universities Power Engineering Conference (AUPEC)

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This paper proposes a linear large signal state-space model for a phase controlled CLC (Capacitor Inductor Capacitor) Resonant Dual Active Bridge (RDAB). The proposed model is useful for fast simulation and for the estimation of state variables under large signal variation. The model is also useful for control design because the slow changing dynamics of the dq variables are relatively easy to control. Simulation results of the proposed model are presented and compared to the simulated circuit model to demonstrate the proposed model's accuracy. This proposed model was used for the design of a ProportionalIntegral (PI) controller and it has been implemented in the circuit simulation to show the proposed models usefulness in control design.

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A quintuple phase shift modulation scheme in multilevel dual active bridge converter for battery energy storage system

Bheemraj

Karthikeyan

Kumaravel

2022

Circuit Theory & Apps

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Generally, the dual active bridge (DAB) bidirectional DC-DC converter suffers from harmonics in the high-frequency link (HFL) conversion stage while operating under any modulation scheme. This paper proposes a quintuple phase shift (QPS) modulation scheme to suppress the harmonics under the whole operating range. A bidirectional auxiliary switch in the low voltage bridge produces a five-level output, which alleviates harmonic components of HFL current. The total harmonic distortion (THD) analysis is done for various operating conditions and is compared with the conventional modulation scheme, such as single phase shift and dual phase shift. The THD can be reduced in the entire power transmission for the proposed modulation scheme by defining the suitable phase shift ratios. Also, the power flow analysis under QPS modulation is reported in this paper. To validate the proposed approach's theoretical performance, simulation results are obtained under different operating conditions and verified with experimental results. The QPS modulation is implemented using the Spartan 3AN FPGA processor.

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A New Resonant Bidirectional DC–DC Converter Topology

Cited by 94 publications

References 19 publications

Studies on a Hybrid Full-Bridge/Half-Bridge Bidirectional CLTC Multi-Resonant DC-DC Converter with a Digital Synchronous Rectification Strategy

Studies on a Hybrid Full-Bridge/Half-Bridge Bidirectional CLTC Multi-Resonant DC-DC Converter with a Digital Synchronous Rectification Strategy

Modeling and control of a CLC Resonant Dual Active Bridge

A quintuple phase shift modulation scheme in multilevel dual active bridge converter for battery energy storage system

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