Reliability Oriented Design Tool For the New Generation of Grid Connected PV-Inverters

Sintamarean, Nicolae Cristian; Blaabjerg, Frede; Wang, Huai; Iannuzzo, Francesco; Rimmen, Peter de Place

doi:10.1109/tpel.2014.2361918

Cited by 121 publications

(55 citation statements)

References 17 publications

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“…Several works based on the PoF approach have proved that the major failure mechanisms of power semiconductors in power modules are closely related to the thermal stress [10]- [12]. More precisely, the thermal cycling caused by power variations in a mission profile leads to accumulated fatigue, causing major failures such as the bond wire liftoff.…”

Section: Thermally Compensated Discontinuous Modulation Strategy For mentioning

confidence: 99%

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters

Andresen

Buticchi

2018

IEEE Trans. Power Electron.

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Abstract-A widely adopted multilevel converter topology is the cascaded H-bridge (CHB), as it can provide voltage and power scalability. However, since the CHB converter can be composed by cells with different remaining lifetime, it could be useful to delay a fault of higher aged cells in order to prolong the entire converter's lifetime. In this paper, a thermally compensated discontinuous pulse width modulation (DPWM) strategy is proposed in order to reduce the thermal stress for power semiconductors in power modules of higher aged cells. Considering the thermal cycles as the most influencing cause of wear out of power modules, the proposed method compensates the thermal cycles under a varying power profile by manipulating the clamping angle of the DPWM. Moreover, the proposed method obtains a comparable total harmonic distortion performance to the phase-shifted carrier modulation.Index Terms-Active thermal control, cascaded H-bridge (CHB), discontinuous pulse width modulation (DPWM), multilevel converter, reliability.

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Section: Thermally Compensated Discontinuous Modulation Strategy For mentioning

confidence: 99%

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters

Andresen

Buticchi

2018

IEEE Trans. Power Electron.

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“…Where L0 is the device normal lifetime, CREE states that the life time of 1х107 hours can be achieved for the current SiC devices [18]; B=(Ea/KB), Ea is the activation energy which is equal to 0.06606 eV [19], KB is Boltzman's constant; ΔTj is the variation of semiconductor junction temperature and can be calculated as:…”

Section: Reliabilty Calculationmentioning

confidence: 99%

Optimization of thermal management and power density of small-scale wind turbine applications using SiC-MOSFETs

Hussein

Castellazzi

2017

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Optimization of Thermal Management and Power Density of Small-Scale Wind Turbine Applications using SiC-MOSFETsAbdallah Hussein, and Alberto CastellazziThe University of Nottingham Power Electronics, Machines and Control (PEMC) Group Nottingham, UK E-mail:eexash@nottingham.ac.uk Abstract-This paper presents an optimized design of 12kW 2L-FB inverter for small-scale wind turbine, taking into account some specific behavioral features of SiC power MOSFETs. Power converters used in renewable energy conversion have to deal with intermittent and variable power availability from the source, which implies that they actually work at their maximum rated power for only a small fraction of their operational time. Still, traditional thermal management design of power modules has to refer to maximum load conditions. SiC-MOSFETs exhibit a very stable performance over a broad temperature range [1-3]; this feature enables to design the cooling device for nominal operational conditions, typically corresponding to a much lower than maximum power rating. When this capability is added to the decrease in the size of passive filter elements, which can be gained by the higher switching frequency capability of SiC MOSFETs, the result is a significant increase of the converter powe, density.

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“…The literature based on the physics of failure approach has claimed that the reliability is closely associated with the thermal stress, consequent with the power profile [11], [12]. According to a commonly applied lifetime model, the failures occur when the accumulated thermal stress exceeds the device's strength [12].…”

Section: Introductionmentioning

confidence: 99%

Modulation strategy for highly reliable cascade H-Bridge inverter based on discontinuous PWM

Andresen

Buticchi

et al. 2017

2017 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Abstract-The Cascaded H-Bridge (CHB) topology is widely employed in high power and high voltage applications due to advantages of the low dv/dt, the low EMI noise, and the low filter inductance. An issue of this modular system is the possible unequal thermal stress of the power semiconductors in the cells, which is affecting the reliability and leads to maintenance costs and down-times. In this paper, the seven-level CHB topology is considered and the modulation strategy based on the Discontinuous PWM (DPWM) is proposed to improve the reliability by reducing the switching losses of a cell experiencing premature wear-out.

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Reliability Oriented Design Tool For the New Generation of Grid Connected PV-Inverters

Cited by 121 publications

References 17 publications

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters

Thermally Compensated Discontinuous Modulation Strategy for Cascaded H-Bridge Converters

Optimization of thermal management and power density of small-scale wind turbine applications using SiC-MOSFETs

Modulation strategy for highly reliable cascade H-Bridge inverter based on discontinuous PWM

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