Validation of Infrared Camera Thermal Measurements on High-Voltage Power Electronic Components

Salem, Thomas E.; Ibitayo, Dimeji; Geil, Bruce

doi:10.1109/tim.2007.903590

Cited by 29 publications

(13 citation statements)

References 6 publications

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“…Several new techniques have yielded promising results toward establishing peak temperature for GaN devices in combination with detailed modeling and infrared (IR) imaging (Green et al, 2008;Raj & Bindra, August 2013;Salem, Ibitayo, & Geil, 2007;Sommet, Mouginot, Quere, Ouarch, & Camiade, 2012;J. Zhang & Zhang, 2013).…”

Section: Electro-thermal Analysismentioning

confidence: 99%

“…The optical measurement requires a uniform surface emissivity coefficient to calculate the temperature of a tested device. Since the surface materials differed, the surfaces were sprayed with a boron nitride (BN) coating to obtain a uniform surface emissivity (Salem et al, 2007). With a detector array and computer algorithms, emissivity measured at each pixel can be obtained from the intensity of IR radiation with the investigated part heated up to a known temperature, which is 50 ˚C herein, as the spatial emissivity correction (Albright, Stump, McDonald, & Kaplan, 1999;Salem, Ibitayo, & Geil, 2005;She et al, 2014).…”

Section: Temperature Distribution Measurement With Infrared Thermographymentioning

confidence: 99%

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Thermal performance evaluation of cascode Paralleled-GaN-HEMTs packaging for high power switching applications

Chou

Cheng

2017

JTST

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Section: Electro-thermal Analysismentioning

confidence: 99%

Section: Temperature Distribution Measurement With Infrared Thermographymentioning

confidence: 99%

Thermal performance evaluation of cascode Paralleled-GaN-HEMTs packaging for high power switching applications

Chou

Cheng

2017

JTST

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“…Tetovo has grown over the years along with the population number. According to the Republic of Macedonia State Statistical Office, Tetovo is one of the three municipalities with biggest natural growth in 2014 [4]. Unfortunately at the end of 2015, Tetovo has been declared as the most polluted urban area globally, with 101.55 pollution index [5].…”

Section: Study Area and Remote Sensing Datamentioning

confidence: 99%

Spatial Change Analisys Based on Ndvi Values Using Landsat Data: Case Study in Tetovo, Macedonia

Jovanovska¹,

Avdan²,

Yildiz³

2016

Geobalcanica 2016

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The rapid urban growth of the cities is a result of the population growth and the negative effects on human health and quality life are obvious which makes the monitoring of the urban growth very important. In this study monitoring over the city Tetovo in the northwestern part of Republic of Macedonia was made using remote sensed satellite images from Landsat archive that is widely used for monitoring the Earth's surface. An attempt of mapping the urban area on an annual basis from the period of 1984 to 2015 was made. Change detection in rapidly growing areas was made using the NDVI (Normalized Difference Vegetation Index) values that were classified for distinguishing the differences between urban and vegetated areas. The study area covers nine cadaster municipalities with 14.6 km 2 . The results showed significant urban growth of 21.3% and 17.7% vegetation loss in the study area from 1984 to 2015.Keywords: Remote Sensing, Urban growth, NDVI, Landsat, Time series, Change detection. INTRODUCTIONUrbanization is increasing rapidly all around the globe. With the population growth, land cover is exposed to changes mostly with negative influence over the natural resources. Effective management and monitoring of land cover require spatial data at various scales in order to incorporate land use patterns, topography, hydrologic and vegetation parameters [1]. Land cover described the materials such as vegetation, rocks or water that are presented on the surface. Current information of land use and land cover is essential for many planning activities. Remote sensing methods are becoming increasingly important for mapping land use and land cover [2]. Landsat series of satellite provides the longest continuous record of satellite-based observation. The Landsat program has provided earth observation data since 1972. Landsat provides the only inventory of the global land surface over time on a seasonal basis, observing requirements for revealing both natural and human inducted landscape changes [3]. In this paper, using five Landsat 5 images and one Landsat 8 image, starting from 1984, until 2015, a 32-year land cover changes based on NDVI (Normalized Difference Vegetation Index) values has been made over nine populated cadaster municipalities (Dzepchishte, Poroj, Tetovo 1, Tetovo 2, Tetovo 3, Mala Rechica, Golema Rechica, Gorno Palchishte, Dolno Palchishte) in the city Tetovo in northwestern part of Republic

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“…Two types of switching occur in the electronic converters: soft switching and hard switching [1,6]. Typically, in soft switching the semiconductor devices (transistors) are switched on and off at zero voltage and/or zero current.…”

Section: Determination Of Losses In the Transistorsmentioning

confidence: 99%

“…As it is known, thermal qualification is particularly important for power semiconductors for two reasons [6]. Firstly, they work with high density currents with a steep temperature gradient between the junction and the environment.…”

Section: Introductionmentioning

confidence: 99%

Thermographic Analysis of a Bridge Power Converter

Anna¹,

Nikolay²

2015

Journal of Electrical Engineering

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Any loss of power in converters is dissipated as heat in the components of the circuit. The article presents a new approach to measuring heat dissipation in a bridge power converter with hard switches using infrared thermography. Parallel measurements by thermocouples have been carried out. The experimental results are compared and used from the both cases. The proposed approach can be used for various circuit implementations of the converters in a similar manner.

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Validation of Infrared Camera Thermal Measurements on High-Voltage Power Electronic Components

Cited by 29 publications

References 6 publications

Thermal performance evaluation of cascode Paralleled-GaN-HEMTs packaging for high power switching applications

Thermal performance evaluation of cascode Paralleled-GaN-HEMTs packaging for high power switching applications

Spatial Change Analisys Based on Ndvi Values Using Landsat Data: Case Study in Tetovo, Macedonia

Thermographic Analysis of a Bridge Power Converter

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