A High-Precision Adaptive Thermal Network Model for Monitoring of Temperature Variations in Insulated Gate Bipolar Transistor (IGBT) Modules

An, Ning; Du, Mingxing; Hu, Zhi Yi; Wei, Kexin

doi:10.3390/en11030595

Cited by 28 publications

(15 citation statements)

References 35 publications

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“…The inverter lifetime considering an EV powertrain has been estimated using power cycling test with a constant load or data driven load profile-based methods for maximum thermal stress analysis [12]. A constant heat generation model is developed to identify hotspot in the power module and bonding strength of the inverter [12][13][14][15][16]. Consequently, variable thermal cycling model is being to identify material degradation based on the average and maximum temperature swing.…”

Section: Background Literature Of Inverter Reliability Estimationmentioning

confidence: 99%

“…If the power stops flowing into the power switches before it reaches the thermal equilibrium, the device will be steady at the ambient temperature due to the time constant, which depends on the thermal resistance and capacitance value. The time constant is calculated as in [13]. The temperature cooling curve can be represented as an exponential curve in (9):…”

Section: Derivation Of Electro-thermal Model Parameters Considering Imentioning

confidence: 99%

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An Approach for Estimating the Reliability of IGBT Power Modules in Electrified Vehicle Traction Inverters

et al. 2020

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The reliability analysis of traction inverters is of great interest due to the use of new semi-conductor devices and inverter topologies in electric vehicles (EVs). Switching devices in the inverter are the most vulnerable component due to the electrical, thermal and mechanical stresses based on various driving conditions. Accurate stress analysis of power module is imperative for development of compact high-performance inverter designs with enhanced reliability. Therefore, this paper presents an inverter reliability estimation approach using an enhanced power loss model developed considering dynamic and transient influence of power semi-conductors. The temperature variation tracking has been improved by incorporating power module component parameters in an LPTN model of the inverter. A 100 kW EV grade traction inverter is used to validate the developed mathematical models towards estimating the inverter performance and subsequently, predicting the remaining useful lifetime of the inverter against two commonly used drive cycles.

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Section: Background Literature Of Inverter Reliability Estimationmentioning

confidence: 99%

Section: Derivation Of Electro-thermal Model Parameters Considering Imentioning

confidence: 99%

An Approach for Estimating the Reliability of IGBT Power Modules in Electrified Vehicle Traction Inverters

et al. 2020

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“…Thermal modes of operation of IGBT modules are shown with modeling and simulation in [16,17]. The presented numerical analysis gives fundamental information about temperature dissipation and thermal field distribution in the modules.…”

Section: Introductionmentioning

confidence: 99%

A Buck-Boost Transformerless DC–DC Converter Based on IGBT Modules for Fast Charge of Electric Vehicles

et al. 2020

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A transformer-less Buck-Boost direct current–direct current (DC–DC) converter in use for the fast charge of electric vehicles, based on powerful high-voltage isolated gate bipolar transistor (IGBT) modules is analyzed, designed and experimentally verified. The main advantages of this topology are: simple structure on the converter’s power stage; a wide range of the output voltage, capable of supporting contemporary vehicles’ on-board battery packs; efficiency; and power density accepted to be high enough for such a class of hard-switched converters. A precise estimation of the loss, dissipated in the converter’s basic modes of operation Buck, Boost, and Buck-Boost is presented. The analysis shows an approach of loss minimization, based on switching frequency reduction during the Buck-Boost operation mode. Such a technique guarantees stable thermal characteristics during the entire operation, i.e., battery charge cycle. As the Buck-Boost mode takes place when Buck and Boost modes cannot support the output voltage, operating as a combination of them, it can be considered as critically dependent on the characteristics of the semiconductors. With this, the necessary duty cycle and voltage range, determined with respect to the input-output voltages and power losses, require an additional study to be conducted. Additionally, the tolerance of the applied switching frequencies for the most versatile silicon-based powerful IGBT modules is analyzed and experimentally verified. Finally, several important characteristics, such as transients during switch-on and switch-off, IGBTs’ voltage tails, critical duty cycles, etc., are depicted experimentally with oscillograms, obtained by an experimental model.

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“…Cauer-type RC models can be used for modelling the internal temperature profile of materials [13]. Cauer RC-ladders for thermal behavior modelling have been used in many different fields of engineering and science, i.e., electronics [14], building engineering [15], and biological sciences [16].…”

Section: Introductionmentioning

confidence: 99%

LTspice Electro-Thermal Model of Joule Heating in High Density Polyethylene Optical Fiber Microducts

Akram¹,

Bertilsson²,

Sidén³

2019

Electronics

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At present, optical fiber microducts are joined together by mechanical type joints. Mechanical joints are bulky, require more space in multiple duct installations, and have poor water sealing capability. Optical fiber microducts are made of high-density polyethylene which is considered best for welding by remelting. Mechanical joints can be replaced with welded joints if the outer surface layer of the optical fiber microduct is remelted within one second and without thermal damage to the inner surface of the optical fiber duct. To fulfill these requirements, an electro-thermal model of Joule heat generation using a copper coil and heat propagation inside different layers of optical fiber microducts was developed and validated. The electro-thermal model is based on electro-thermal analogy that uses the electrical equivalent to thermal parameters. Depending upon the geometric shape and material properties of the high-density polyethylene, low-density polyethylene, and copper coil, the thermal resistance and thermal capacitance values were calculated and connected to the Cauer RC-ladder configuration. The power input to Joule heating coil and thermal convection resistance to surrounding air were also calculated and modelled. The calculated thermal model was then simulated in LTspice, and real measurements with 50 µm K-type thermocouples were conducted to check the validity of the model. Due to the non-linear transient thermal behavior of polyethylene and variations in the convection resistance values, the calculated thermal model was then optimized for best curve fitting. Optimizations were conducted for convection resistance and the power input model only. The calculated thermal parameters of the polyethylene layers were kept intact to preserve the thermal model to physical structure relationship. Simulation of the optimized electro-thermal model and actual measurements showed to be in good agreement. Author Contributions: Conceptualization, K.B., S.A., and J.S.; methodology, S.A. and K.B.; software, S.A. and K.B.; validation, S.A. and K.B.; formal analysis, S.A. and K.B.; investigation, S.A. and K.B.; resources, K.B. and J.S.; data curation, K.B., S.A. and J.S.; writing-original draft preparation, S.A.; writing-review and editing, J.S.; visualization, S.A.; supervision, K.B. and J.S.; project administration, J.S.; funding acquisition, K.B. and J.S.Funding: This research work is part of the project FIBER, funded through the European Regional Development Fund. Conflicts of Interest:The authors declare no conflict of interest.

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A High-Precision Adaptive Thermal Network Model for Monitoring of Temperature Variations in Insulated Gate Bipolar Transistor (IGBT) Modules

Cited by 28 publications

References 35 publications

An Approach for Estimating the Reliability of IGBT Power Modules in Electrified Vehicle Traction Inverters

An Approach for Estimating the Reliability of IGBT Power Modules in Electrified Vehicle Traction Inverters

A Buck-Boost Transformerless DC–DC Converter Based on IGBT Modules for Fast Charge of Electric Vehicles

LTspice Electro-Thermal Model of Joule Heating in High Density Polyethylene Optical Fiber Microducts

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