Direct Energy Transfer for High Efficiency Photovoltaic Energy Systems Part II: Experimental Evaluations

Dehbonei, H.; Lee, S.R.; Ko, Shih Hung

doi:10.1109/taes.2009.4805262

Cited by 31 publications

(7 citation statements)

References 4 publications

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“…One example is the new boost converter shown in Fig V as input and as 3 V output. The particular advantage for this converter is that the output capacitor has a smaller voltage stress…”

Section: First Order Casementioning

confidence: 99%

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The analysis of DC-DC converter topologies based on stackable voltage elements

Zou

Scott

Wang

2010

2010 IEEE Energy Conversion Congress and Exposition

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In this paper, a method for generating nonisolated dc/dc converter topologies is summarized. This method utilizes the stackable voltage stiff elements in a dc/dc converter and arranges them to create new usable voltage levels. By defining the input and output for different voltage stiff elements, a comprehensive set of converters can be created. The canonical first order switching cell, along with a proposed third order switching cell, are used to help analyze the first and third order converter topologies. Detailed analysis is provided using the two switching cells. Finally, transformer-less multiple-inputs converters are also analyzed using both the two switching cells and the stackable voltage element concept.Index Terms-Canonical switching cell, third order switching cell, stackable voltage elements.

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“…One example is the new boost converter shown in Fig V as input and as 3 V output. The particular advantage for this converter is that the output capacitor has a smaller voltage stress…”

Section: First Order Casementioning

confidence: 99%

“…In this way, only part of the load current will flow through power electronics circuits and the total efficiency was expected to be higher. In January 2009, two papers on the same circuit concept were published by Dehbonei [2], [3]. The detailed analysis of three basic dc/dc converters using the "stacked" concept was presented.…”

Section: Introductionmentioning

confidence: 99%

The analysis of DC-DC converter topologies based on stackable voltage elements

Zou

Scott

Wang

2010

2010 IEEE Energy Conversion Congress and Exposition

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“…In these cases, Direct Energy Transfer (DET) power regulation is used instead. In DET systems, the solar panels are connected to a fixed operating voltage (which normally depends on the battery charge level), that sets the energy conversion efficiency of the panel [13], [14]. Most thermal models of low-cost satellites do not take the solar panels' operating voltage (their output voltage) into UPMSat-2 during integration tasks at the Centre Spatial Guyanais of CNES (Kourou, French Guiana, February 2020) (right).…”

Section: Introductionmentioning

confidence: 99%

On the Thermo-Electrical Modeling of Small Satellite's Solar Panels

Gómez-San-Juan

Cubas

Pindado

2021

IEEE Trans. Aerosp. Electron. Syst.

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The thermal modeling of small satellites (up to 100 kg) is crucial for predicting and managing their operation, and may present significant differences when compared to the thermal modeling carried out in relation to larger spacecraft. In this article, the modeling of their solar panels is underlined as one of these differences. The efficiency of spacecraft solar panels is affected by three main variables: the sun's irradiance, the cells' temperatures, and the operating voltage. Unlike the most common approach, which only takes into account the first two variables and decouples the thermal problem from the electrical one, the coupled thermo-electric problem of the solar panel efficiency as a whole is considered in this article. Using the UPMSat-2 mission as an example, the importance of considering the operating voltage in the thermal analysis of a mission is proven in the present article (for the prediction of temperature and generated power). A simple but accurate I-V (Current-Voltage) curve model to calculate panel efficiency is proposed for modeling the solar panels performance, this method being easily implemented in ESATAN © .

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“…[3,4]. In references [5][6][7][8][9][10][11][12][13], the authors propose new topologies of PECs with high efficiencies and power densities that can be used to improve the overall efficiency of a DC distribution system. A DC distribution system has many advantages over an AC distribution system.…”

Section: Introductionmentioning

confidence: 99%

An Overview of Direct Current Distribution System Architectures & Benefits

et al. 2018

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This paper examines existing and future direct current (DC) distribution systems with a wide range of applications in data centers, telecommunication systems, commercial buildings, residential homes, electric vehicles, spacecraft, and aircrafts. DC distribution systems have many advantages and disadvantages over their alternating current (AC) counterparts. There are a few surviving examples of DC distribution systems; among them are the telecommunication systems and data centers that use the low-voltage 48 Vdc systems. However, recently, there has been a move towards higher DC bus voltages. In this paper, a comparative study of different DC distribution architectures and bus structures is presented and voltage level selection is discussed for maximizing system efficiency and reliability, reducing system costs, and increasing the flexibility of the system for future expansion. Furthermore, DC distribution systems are investigated from a safety standpoint and the current global market for these distribution systems is also discussed.

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Direct Energy Transfer for High Efficiency Photovoltaic Energy Systems Part II: Experimental Evaluations

Cited by 31 publications

References 4 publications

The analysis of DC-DC converter topologies based on stackable voltage elements

The analysis of DC-DC converter topologies based on stackable voltage elements

On the Thermo-Electrical Modeling of Small Satellite's Solar Panels

An Overview of Direct Current Distribution System Architectures & Benefits

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