Analysis and comparison of magnetic structures in a tapped boost converter for LED applications

Mira, Maria C.; Knott, Arnold; Andersen, Michael A. E.

doi:10.1109/peac.2014.7037923

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…However, this arrangement will produce higher capacitive loss than the Z-type winding. This structure with partial interleaving winding arrangement shows the best efficiency performance at low power levels compared to the same structure with full and no interleaving and a planar magnetics ELP32/6/20 with full interleaving arrangement [18]. The coupled inductor structure leakage inductance and stray capacitances measured with an impedance analyzer Agilent 4294A are: L lk = 97.44 nH, C p = 1.04 nF and C pri−sec = 0.15 nF.…”

Section: Loss Distribution Analysismentioning

confidence: 88%

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Mira¹,

Knott²,

Andersen³

2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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In locations far from the equator achieving high conversion efficiency in low-power solar systems is challenging due to low solar irradiance levels. This paper presents a high efficiency three-port converter (TPC) for light-to-light (LtL) applications where no direct solar conversion is required. The separation of the power flows allows to replace the conventional solution of two cascaded converters into a single structure with shared components. A loss distribution analysis of the proposed structure is performed, which shows very good match with the experimental results. A prototype of the TPC demonstrates high efficiency in both power flow paths. At low irradiation level, the photovoltaic to battery stage shows a peak efficiency of 99.1 % at at 1.5 W output power and the LED driver stage presents a peak efficiency of 97.3 % at 3 W output power.

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Section: Loss Distribution Analysismentioning

confidence: 88%

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Mira¹,

Knott²,

Andersen³

2016

2016 18th European Conference on Power Electronics and Applications (EPE'16 ECCE Europe)

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“…Different coupled inductor structures and interleaving techniques in a tapped boost converter for LED applications were analyzed in [15]. On the one hand, the ETD wire-wound magnetic structure without interleaving (PPSS) presents very low parasitic capacitance ( 0.73 ) but very high leakage inductance (…”

Section: Switching Loss Evaluationmentioning

confidence: 99%

MOSFET loss evaluation for a low-power StandAlone photovoltaic-LED system

Mira

Knott

Andersen

2015

2015 IEEE 11th International Conference on Power Electronics and Drive Systems

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Abstract-This paper presents a performance evaluation and comparison of state-of-the-art low voltage Si MOSFETs for a stand-alone photovoltaic-LED Light to Light (LtL) system. The complete system is formed by two cascaded converters that will be optimized for a determined solar irradiation and LED illumination profiles. The comparison is performed based on dynamic characterization and evaluation of the devices energy loss at different current levels.

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“…Research has been going on on the power electronics design for this product type in [1]- [6]. However, these works are based on driving conventional Light Emitting Diodes (LED) with the voltage and current levels associated with them.…”

Section: Introductionmentioning

confidence: 99%

Photovoltaic OLED Driver for Low-Power Stand-Alone Light-to-Light Systems

Ploug¹,

Knott²

2016

ElAEE

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1 Abstract-Photovoltaic (PV) stand-alone systems need to achieve multiple energy conversion modes. I.e. the energy conversion from PV to a local energy storage as well as energy conversion from the energy storage to the load. This paper documents the practical design considerations for the development of a three-port-converter for this purpose optimized for the specifications for driving an Organic Light Emitting Diode (OLED) panel intended for lighting purposes. By using a three-port-converter, featuring shared components for each conversion mode, the converter reaches 97 % efficiency at 1.8 W during conversion from photovoltaic panel to the battery, and 97 % in the area 1.4 W to 2 W for power delivery to the OLED.

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Analysis and comparison of magnetic structures in a tapped boost converter for LED applications

Cited by 4 publications

References 12 publications

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

Loss distribution analysis of a three-port converter for low-power stand-alone light-to-light systems

MOSFET loss evaluation for a low-power StandAlone photovoltaic-LED system

Photovoltaic OLED Driver for Low-Power Stand-Alone Light-to-Light Systems

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