A novel matrix converter based resonant dual active bridge for V2G applications

Thrimawithana, Duleepa J.; Madawala, Udaya K.; Twiname, Ross P.; Vilathgamuwa, D.M.

doi:10.1109/asscc.2012.6523319

Cited by 39 publications

(10 citation statements)

References 17 publications

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“…In this case, the coefficient of the first order factor of the denominator polynomial in (26) is changed to (r/2 + r v ) and therefore, with that, the system stability can be improved. As shown in (4) and 5, the voltages u AO and u BO can be regulated by changing the duty cycle d, and the voltage across the capacitor C r (u c ) in the ripple current reduction circuit can be controlled accordingly. Therefore, the ripple power can be compensated by charging or discharging the capacitor.…”

Section: Control Schemementioning

confidence: 99%

“…The fundamental component of P a P r Total ripple power compensated by C r P The isolated single phase DC/AC DAB converters have higher power density and power conversion efficiency compared to conventional grid-connected inverters with bulky DC link electrolytic capacitors. Numerous applications such as bidirectional power conversion in renewable energy generation and vehicle-to-grid (V2G) systems [1]- [4] can be benefited from these advantages of DC/AC DAB converters. However, the double grid frequency ripple current can degrade the performance of these converters.…”

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confidence: 99%

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An Active Power Decoupling Method for Single Phase DC/AC DAB Converters

et al. 2019

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The existence of the double grid frequency (100 Hz) ripple current in dc/ac dual active bridge (DAB) power converters can degrade their performance and as such these ripples need to be compensated. An active power decoupling method is proposed in this paper to attenuate the 100-Hz current ripple in single phase dc/ac DAB converters. Compared to other current ripple reduction methods for which additional switches are used, the proposed method does not require any additional switching components thus decreasing the system cost. In the proposed method, the existing switching devices of the primary side full bridge converter and an LLC circuit integrated to form a 100-Hz ripple current reduction circuit, which is controlled by regulating the duty cycle of the primary full bridge converter switching legs. The mathematical analysis and the circuit parameter design methods are proposed. In addition, a current sharing method is proposed to keep the currents of the inductors in the LLC circuit are balanced against any possible circuit parameter deviations. The effectiveness of the developed method is evaluated through the simulation and experimental tests.

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Section: Control Schemementioning

confidence: 99%

mentioning

confidence: 99%

An Active Power Decoupling Method for Single Phase DC/AC DAB Converters

et al. 2019

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“…This makes the LCL RDAB useful for capacitor and battery charging applications. In [11] it has been shown that this topology would also be useful as a bidirectional AC-DC converter to interface an EV battery directly to the grid. To increase the power density of this converter the author has proposed a Capacitor Inductor Capacitor (CLC) resonant topology which decreases the number of magnetic components required, decreases the required transformer size and still shows similar operating characteristics to the LCL resonant topology [12].…”

Section: Introductionmentioning

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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“…On the other hand, there are studies on isolated single‐phase AC‐DC converters using AC direct conversion . Though these systems based on direct conversion do not contain electrolytic capacitors or other energy storage elements, their applications are limited because power ripple caused by single‐phase current appears in high‐frequency output.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, there are studies on isolated singlephase AC-DC converters using AC direct conversion. [4][5][6][7] Though these systems based on direct conversion do not contain electrolytic capacitors or other energy storage elements, their applications are limited because power ripple caused by single-phase current appears in high-frequency output. Particularly, when used in battery charging circuits, large-scale capacitors are needed to suppress ripple current flowing into batteries, which adds to system size.…”

Section: Introductionmentioning

confidence: 99%

A power decoupling control method for an isolated single‐phase AC‐to‐DC converter based on a high‐frequency cycloconverter

Komeda

Fujita

2018

Electrical Engineering Japan

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This paper proposes a new power decoupling method for a high‐frequency cycloconverter which converts the single‐phase line‐frequency ac input to the high‐frequency ac output directly. The cycloconverter consists of two half‐bridge inverters, two input filter capacitors, and a series‐resonant circuit. The proposed power decoupling method stores the input power ripple at double the line frequency in the filter capacitors. Therefore, the proposed method achieves a unity power factor in ac input and a constant current amplitude in the high‐frequency output without any additional switching device or energy storage element. This paper theoretically discusses the principle and operating performance of the proposed power decoupling method, and the viability is confirmed by using an experimental isolated ac‐to‐dc converter based on the high‐frequency cycloconverter. As a result, the proposed power decoupling method effectively improved the displacement power factor in the line current to more than 0.99 and reduced the output voltage ripple to 4% without any electrolytic capacitor.

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A novel matrix converter based resonant dual active bridge for V2G applications

Cited by 39 publications

References 17 publications

An Active Power Decoupling Method for Single Phase DC/AC DAB Converters

An Active Power Decoupling Method for Single Phase DC/AC DAB Converters

Modeling and control of a CLC Resonant Dual Active Bridge

A power decoupling control method for an isolated single‐phase AC‐to‐DC converter based on a high‐frequency cycloconverter

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