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High Efficiency Thermoelectric Power Conversion
MRS Proceedings, 2005 ABSTRACTRecent efforts at Teledyne Energy Systems, Inc. have lead to significant improvements in thermoelectric (TE) materials and power conversion devices. A number of improved formulations have been identified for standard n-type PbTe and p-type TAGS alloys. The preliminary test results appear to show nearly a 50% increase in the dimensionless figure-
Donald F. Byrnes, Ben Heshmatpour
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Doubling Power Conversion Efficiency of Si Solar Cells
Advanced MaterialsAbstractImproving solar cells' power conversion efficiency (PCE) is crucial to further the deployment of renewable electricity. In addition, solar cells cannot function at exceedingly low temperatures owing to the carrier freeze‐out phenomenon. This report demonstrates that through temperature regulation, the PCE of monocrystalline single‐junction ...
Renqing Guo +2 more
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Session 12 overview: Efficient Power Conversion
2016 IEEE International Solid-State Circuits Conference (ISSCC), 2016The session on Efficient Power Conversion is about improvement of efficiency and versatility in switched-capacitor, inductor-based DC-DC converters, and LED drivers. The first two papers address switched-capacitor power conversion, dealing with loss mechanisms and limited ratios.
Vadim Ivanov, Jaejin Park
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Efficiency improvement of power conversion system with multilayer power inductor
2020 IEEE International Conference on Consumer Electronics - Asia (ICCE-Asia), 2020In this paper, the multilayer power inductor with the air-clip is designed and fabricated to improve the saturation current of power inductor for the power conversion system. It is proved that the air-clip is able to influence the saturation current of power inductor and the efficiency of the power conversion system.
Hyun Gyu Jang +5 more
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On structural effects and energy conversion efficiency of power harvesting
SPIE Proceedings, 2008The concept of power harvesting works towards developing self-powered devices that do not require replaceable power supplies. One important parameter defining the performance of a piezoelectric power harvesting system is the efficiency of the system. However, an accepted definition of energy harvesting efficiency does not currently exist.
null Yabin Liao, Henry A. Sodano
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Optimization of klystron power conversion efficiency
1966 International Electron Devices Meeting, 1966Optimum power conversion efficiency in klystrons involves two factors: (1) electron bunching, for highest current conversion efficiency, and (2) minimum velocity spread, for optimum energy removal in the output gap. The merit figure, a new criterion involving both of these factors, is shown to give an excellent quantitative indication of klystron power
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CuGaSe 2 solar cells with 9.7% power conversion efficiency
Applied Physics A: Materials Science & Processing, 1996Heterojunctions, such as ZnO/CdS/CuGaSe2, were fabricated for photovoltaic applications. Optimization of device structures based on monocrystalline CuGaSe2 led to the highest-to-date power conversion efficiencies for CuGaSe2 solar cells. At room temperature under 100 mW/cm2 AM1.5 illumination a maximum cell efficiency of 9.7% was achieved, given by an ...
M. Saad +3 more
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Power Chips for Efficient Energy Conversion
AIP Conference Proceedings, 2004The Power Chips technology employs a gap of 4–10 nanometers in a gap diode to allow for efficient thermal conversion with very low thermal leakage. The design ΔT is on the order of 400 degrees single stage, with operation possible from 1 K to 1600 K, depending on configuration and meeting engineering challenges.
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Efficiency Regulations: Driving power conversion efficiency designs
IEEE Power Electronics Magazine, 2017In recent decades, government agencies developed programs to improve the efficiency of our electronic products and appliances. A 1999 study estimated that up to 10% of electricity consumed by residential products was wasted when products had been turned off by consumers [1].
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Power Gallium Nitride Technology: The Need for Efficient Power Conversion
IEEE Electrification Magazine, 2020The biggest motivation and driver for semiconductor power device innovation is improved efficiency in power conversion. Power gallium nitride (GaN) technology shows the greatest performance benefits against other incumbent technologies, including silicon (Si) technology. A reduction in power losses is the key challenge industries are facing.
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