Development of a 90 kW Bi-Directional DC-DC Converter for Power Dense Applications

Urciuoli, Damian; Tipton, C.W.

doi:10.1109/apec.2006.1620718

Cited by 30 publications

(15 citation statements)

References 2 publications

(1 reference statement)

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“…The transfer function of the duty cycle to each state variable can be calculated with Equation (12).…”

Section: Bi-dc/dc Modementioning

confidence: 99%

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Modelling of a Power Converter with Multiple Operating Modes

Wang

Luo

2018

WEVJ

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Abstract:In order to achieve DC voltage matching, on-board charging, and DC/AC power inversion, three independent power converters are often needed in traditional Distributed Power Converter (DPC) systems of electric vehicles (EVs): bidirectional DC/DC (Bi-DC/DC), AC/DC, and DC/AC. The requirement of electronic devices such as power switches, inductors, and capacitors make the converter costly and complicated in structure. In this paper, a power converter with multi-operating mode (PCMM) is presented. The proposed PCMM can work in Bi-DC/DC, AC/DC, and DC/AC modes. The state-space averaging model of PCMM considering resistance of Insulated Gate Bipolar Transistor (IGBT) and the inductor is presented. Based on this model, the transfer function of the system is derived and the controller is designed. The simulation and experimental results show that PCMM can meet the design target and verify the feasibility of the model. The measurement results show that the weight of PCMM proposed in this paper is reduced by 51.2% compared with the traditional structure.

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“…The transfer function of the duty cycle to each state variable can be calculated with Equation (12).…”

Section: Bi-dc/dc Modementioning

confidence: 99%

“…The advantages of this topology include low output current ripple and high power density [10]. The interleaved DC/DC can be composed of two phases [11], three phases [12], or multi-phase [13]. It has greatly reduced volume and weight compared to the traditional Bi-DC/DC.…”

Section: Introductionmentioning

confidence: 99%

Modelling of a Power Converter with Multiple Operating Modes

Wang

Luo

2018

WEVJ

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“…military and automotive control electronics) are already reaching the temperature limit of silicon electronics, which is around 150 ºC. [1] Therefore, alternative materials such as silicon carbide (SiC) wide bandgap semiconductors are being researched to operate at higher temperatures and to allow for increased power density. [2] Consequently, it is necessary to develop cooling technologies capable of handling these high power densities.…”

Section: Introductionmentioning

confidence: 99%

Thermal performance of a dual 1.2 kV, 400 a silicon-carbide MOSFET power module

Boteler

Urciuoli

Ovrebo

et al. 2010

2010 26th Annual IEEE Semiconductor Thermal Measurement and Management Symposium (SEMI-THERM)

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Power electronics are reaching the temperature limits of silicon; therefore alternative materials such as silicon carbide (SiC) are currently being explored. An all SiC 1.2 kV, 400 A dual MOSFET power module has been fabricated and tested for thermal performance. The module was designed as a dropin replacement for standard commercial modules with an integrated liquid cooling system that reduces thermal resistance. The heat sink has been experimentally tested up to 400 A (158 W/cm 2 ) showing a device temperature rise of as little as 24 °C. Thermal modeling was also performed and the results were compared to experimental data.

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“…The current ripple reduction can be achieved by putting a capacitor in parallel with the battery for a single-phase dc-dc converter as described in [4] and [5]. The current ripple can be further reduced by combining a two-phase interleaved dc-dc converter with a capacitor such as proposed by [6] and [7] or even by combining a three-phase interleaved converter and a capacitor such as [8] and [9]. Soft-switching converters also rely on a capacitor to reduce the current ripple of the battery current [10], [11].…”

Section: Introductionmentioning

confidence: 99%

Impact of Current Ripple on Li-ion Battery Ageing

Breucker

Engelen

D’hulst

et al. 2013

WEVJ

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The aim of this paper is to investigate the impact of the current ripple, originating from the dc-dc converter of e.g. a PHEV powertrain, on the ageing of Li-ion batteries. Most research concerning batteries focuses on very low (µHz) to low (Hz) frequencies and low current ripples to create very accurate battery models which can determine e.g. the State of Charge of the battery. On the other hand the design of dc-dc converters tries to reduce the current ripple by using multiple phases with interleaving technique and capacitors in parallel with the battery. The interaction between the current ripple of the dc-dc converter and the battery has received little attention so far. A test set-up is build with two identical 304 V , 12 kW h Li-ion batteries and two 100 A dc-dc converters. The dc-dc converter can be connected to an LCL-filter or solely to the primary inductor of this filter, such that the battery current contains a small or large current ripple respectively. The batteries are discharged and charged to simulate the circumstances in which a plug-in hybrid electric vehicle is used. After each month, during which the battery either experiences a small or large current ripple, characterization tests are performed to establisch the ageing of the batteries. Based on the test results, the current ripple does not appear to have a measurable impact on the battery resistance and the Discharge and Regen Power. There is an increase of the resistance and a decrease of the Discharge and Regen Power, but this is to be expected as the battery packs are submitted to 3 months of Combined Cycle Life Testing. The temperature of the battery turns out to be far more important for the resistance and attained power levels of the batteries. The absent effect of the current ripple on the ageing of the batteries may be due to the intrinsic double-layer capacitor. This capacitor at the surface of the electrodes carries part of the current ripple and reduces the current ripple as experienced by the actual charge transfer reaction which carries the dc-part of the current.

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Development of a 90 kW Bi-Directional DC-DC Converter for Power Dense Applications

Cited by 30 publications

References 2 publications

Modelling of a Power Converter with Multiple Operating Modes

Modelling of a Power Converter with Multiple Operating Modes

Thermal performance of a dual 1.2 kV, 400 a silicon-carbide MOSFET power module

Impact of Current Ripple on Li-ion Battery Ageing

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