Comparative Life Cycle Cost Analysis of Si and SiC PV Converter Systems Based on Advanced $\eta$- $\rho$-$\sigma$ Multiobjective Optimization Techniques

Burkart, Ralph M.; Kolar, Johann W.

doi:10.1109/tpel.2016.2599818

Cited by 78 publications

(33 citation statements)

References 29 publications

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“…As described in [22] the capital equivalent worth of one watt of continuous dissipation can be used to select components in order to minimize the LCC of that component. Combined with cost models, the switching frequency, semiconductors and magnetic components are selected to achieve minimal life cycle cost for a given service life time assuming continuous operation at rated power as will be shown in the following for the IAF rectifier [23].…”

Section: Life Cycle Cost Based Converter Designmentioning

confidence: 99%

“…The calculation can be extended by fitting a second order polynomial to measured hard switching losses (turn-on and turn-off) for the switched voltage, (16) where I sw is the switched current. Switching losses measured in [23] for a half bridge of two C2M0080120 SiC MOSFETs and 600V dc link voltage at various I sw are shown in Fig. 9 together with a second order polynomial fitted by least squares regression.…”

Section: Including Switching Lossesmentioning

confidence: 99%

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99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

2017

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Abstract-Due to the increasing power consumption of data centers, efficient dc power distribution systems have become an important topic in research and industry over the last years and according standards have been adopted. Furthermore the power consumed by telecommunication equipment and data centers is an economic factor for the equipment operator, which implies that all parts of the distribution system should be designed to minimize the life cycle cost, i.e. the sum of first cost and the cost of the power conversion losses. This paper demonstrates how semiconductor technology, chip area, magnetic component volumes and switching frequency can be selected based on life cycle cost, using analytical and numerical optimizations. A three-phase buck-type PFC rectifier with integrated active filter for 380V dc distribution systems is used as an example system, which shows that a peak efficiency of 99% is technically and economically feasible with state-of-the-art SiC MOSFETs and nanocrystalline or ferrite cores. Measurements taken on an 8 kW, 4 kWdm -3 hardware prototype demonstrate the validity and feasibility of the design.Index Terms-Active third-harmonic current injection, bucktype power factor correction (PFC) converter, three-phase rectifier systems, integrated active filter rectifier.

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Section: Life Cycle Cost Based Converter Designmentioning

confidence: 99%

Section: Including Switching Lossesmentioning

confidence: 99%

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

2017

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“…VER the last decade, the solar photovoltaic (PV) energy continues to experience a significant growth tendency due to the dramatic price reduction of PV modules in the world market [1], and the progressive evolution of PV converters whose efficiency has been reported as high as 99% [2].…”

Section: Introductionmentioning

confidence: 99%

Wear-Out Failure Analysis of an Impedance-Source PV Microinverter Based on System-Level Electrothermal Modeling

Shen

Chub

Wang

et al. 2019

IEEE Trans. Ind. Electron.

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The wear-out performance of an impedancesource photovoltaic (PV) microinverter (MI) is evaluated and improved based on two different mission profiles. The operating principle and hardware implementation of the MI are firstly described. With the experimental measurements on a 300-W MI prototype and system-level finite element method (FEM) simulations, the electro-thermal models are built for the most reliability-critical components, i.e., power semiconductor devices and capacitors. The dependence of the power loss on the junction/hotspot temperature is considered, the enclosure temperature is taken into account, and the thermal cross-coupling effect between components is modeled. Then the long-term junction/ hotspot temperature profiles are derived and further translated into components' annual damages with the lifetime and damage accumulation models. After that, the Monte Carlo simulation and Weibull analysis are conducted to obtain the system wear-out failure probability over time. It reveals that both the mission profile and the thermal cross-coupling effect have a significant impact on the prediction of system wear-out failure, and the dc-link electrolytic capacitor is the bottleneck of long-term reliability. Finally, the multi-mode control with a variable dclink voltage is proposed, and a more reliable dc-link electrolytic capacitor is employed, which results in a remarkable reliability improvement for the studied PV MI.

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“…The practical challenge for this type of applications is to design the active capacitors to fulfill the functionality, efficiency and lifetime target with minimum cost. Such component sizing procedure is presented in [13] based on the reliability-oriented design method [14] [15] and power electronic component cost models discussed in [16][17][18]. For dynamic response and impedance characteristic analyses, the large-signal modeling and small-signal modeling are widely applied tools [19].…”

Section: Introductionmentioning

confidence: 99%

On the Practical Design of a Two-Terminal Active Capacitor

Wang

Liu

Wang

2019

IEEE Trans. Power Electron.

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A two-terminal active capacitor concept is proposed recently based on an active power electronic circuit with a voltage control method and self-power scheme. It retains the convenience of use as a passive capacitor with two power terminals only without any additional required connections, and has the potential to either increased power density or reduced design cost depending on the applications. Based on the previously proof-of-concept study, this paper addresses the design constraints, impedance modeling, and start-up solutions of two-terminal active capacitors. A design method for functionality, efficiency, lifetime and cost constraints application is applied to size the active components and passive elements. A voltage feed-forward control scheme is implemented to improve its dynamic response. Two start-up solutions are proposed to overcome the issues brought by the self-power scheme. A case study of an active capacitor for the DC link of a singlephase full-bridge rectifier is presented to demonstrate the theoretical analyses.

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Comparative Life Cycle Cost Analysis of Si and SiC PV Converter Systems Based on Advanced $\eta$- $\rho$-$\sigma$ Multiobjective Optimization Techniques

Cited by 78 publications

References 29 publications

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

99% Efficient Three-Phase Buck-Type SiC MOSFET PFC Rectifier Minimizing Life Cycle Cost in DC Data Centers

Wear-Out Failure Analysis of an Impedance-Source PV Microinverter Based on System-Level Electrothermal Modeling

On the Practical Design of a Two-Terminal Active Capacitor

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