The Experts below are selected from a list of 252369 Experts worldwide ranked by ideXlab platform

Huai Wang - One of the best experts on this subject based on the ideXlab platform.

  • Impact of Mission Profile Dynamics on Accuracy of Thermal Stress Modeling in PV Inverters
    2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020
    Co-Authors: Ariya Sangwongwanich, Huai Wang
    Abstract:

    Thermal stress modeling of power devices is a key factor that influences the Design for Reliability of Photovoltaic (PV) inverters under long-term operations, i.e., different mission profiles. Due to the requirement of long-term analysis for mapping the inverter Reliability more accurately, a thermal model based on a lumped thermal network is normally employed due to its low computational burden. However, there is still a lack of validation in terms of modeling accuracy, e.g., comparing the simulation results against the experimental thermal stress in field operations. Besides, the impact of mission profile dynamics on the accuracy of different thermal modeling approaches have not been analyzed. To address this issue, the model accuracy of two thermal stress modeling approaches for PV inverters are evaluated in this paper by comparing the thermal stress estimated from a thermal model with the experimental results under various mission profile dynamics. According to the results, the average error of the junction temperature estimation is 1.51 % for a transient thermal model and 2.08 % for a steady-state thermal model, respectively. On the other hand, the computational efficiency of the thermal stress modeling can be improved by more than a factor of three when using the steady-state thermal model.

  • Design for Reliability and robustness tool platform for power electronic systems study case on motor drive applications
    Applied Power Electronics Conference, 2018
    Co-Authors: Ionut Vernica, Huai Wang, Frede Blaabjerg
    Abstract:

    Because of the high cost of failure, the Reliability performance of power semiconductor devices is becoming a more and more important and stringent factor in many energy conversion applications. Thus, the need for appropriate Reliability analysis of the power electronics emerges. Due to its conventional approach, mainly based on failure statistics from the field, the Reliability evaluation of the power devices is still a challenging task. In order to address the given problem, a MATLAB based Reliability assessment tool has been developed. The Design for Reliability and Robustness (DfR2) tool allows the user to easily investigate the Reliability performance of the power electronic components (or sub-systems) under given input mission profiles and operating conditions. The main concept of the tool and its framework are introduced, highlighting the Reliability assessment procedure for power semiconductor devices. Finally, a motor drive application is implemented and the Reliability performance of the power devices is investigated with the help of the DfR2 tool, and the resulting Reliability metrics are presented.

  • Transitioning to Physics-of-Failure as a Reliability Driver in Power Electronics
    IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014
    Co-Authors: Huai Wang, John B. Jacobsen, Thorkild Kvisgaard, Peter De Place Rimmen, Wang Huai-yu, Marco Liserre, Jorn Landkildehus
    Abstract:

    Power electronics has progressively gained an important status in power generation, distribution, and consumption. With more than 70% of electricity processed through power electronics, recent research endeavors to improve the Reliability of power electronic systems to comply with more stringent constraints on cost, safety, and availability in various applications. This paper serves to give an overview of the major aspects of Reliability in power electronics and to address the future trends in this multidisciplinary research direction. The ongoing paradigm shift in Reliability research is presented first. Then, the three major aspects of power electronics Reliability are discussed, respectively, which cover physics-of-failure analysis of critical power electronic components, state-of-the-art Design for Reliability process and robustness validation, and intelligent control and condition monitoring to achieve improved Reliability under operation. Finally, the challenges and opportunities for achieving more reliable power electronic systems in the future are discussed.

  • Design for Reliability in power electronics in renewable energy systems status and future
    IEEE International Conference on Power Engineering Energy and Electrical Drives, 2013
    Co-Authors: Huai Wang, Frede Blaabjerg, Rui Wu
    Abstract:

    Advances in power electronics enable efficient and flexible interconnection of renewable sources, loads and electric grids. While targets concerning efficiency of power converters are within reach, recent research endeavors to predict and improve their Reliability to ensure high availability, low maintenance costs, and therefore, low Levelized-Cost-of-Energy (LCOE) of renewable energy systems. This paper presents the prior-art Design for Reliability (DFR) process for power converters and addresses the paradigm shift to Physics-of-Failure (PoF) approach and mission profile based analysis. Moreover, the lifetime prediction of Reliability-critical components IGBT modules is discussed in a 2.3 MW wind power converter. Finally, the challenges and opportunities to achieve more reliable power electronic converters are discussed. Keywords-power electronics; Design for Reliability; Design robustness; renewable energy; wind power converter

  • Design for Reliability in power electronics in renewable energy systems status and future
    International Conference on Power Engineering Energy and Electrical Drives, 2013
    Co-Authors: Huai Wang, Frede Blaabjerg
    Abstract:

    Advances in power electronics enable efficient and flexible interconnection of renewable sources, loads and electric grids. While targets concerning efficiency of power converters are within reach, recent research endeavors to predict and improve their Reliability to ensure high availability, low maintenance costs, and therefore, low Levelized-Cost-of-Energy (LCOE) of renewable energy systems. This paper presents the prior-art Design for Reliability (DFR) process for power converters and addresses the paradigm shift to Physics-of-Failure (PoF) approach and mission profile based analysis. Moreover, the lifetime prediction of Reliability-critical components IGBT modules is discussed in a 2.3 MW wind power converter. Finally, the challenges and opportunities to achieve more reliable power electronic converters are discussed.

Frede Blaabjerg - One of the best experts on this subject based on the ideXlab platform.

  • artificial intelligence aided automated Design for Reliability of power electronic systems
    IEEE Transactions on Power Electronics, 2019
    Co-Authors: Tomislav Dragicevic, Patrick Wheeler, Frede Blaabjerg
    Abstract:

    This paper proposes a new methodology for automated Design of power electronic systems realized through the use of artificial intelligence. Existing approaches do not consider the system's Reliability as a performance metric or are limited to Reliability evaluation for a certain fixed set of Design parameters. The method proposed in this paper establishes a functional relationship between Design parameters and Reliability metrics, and uses them as the basis for optimal Design. The first step in this new framework is to create a nonparametric surrogate model of the power converter that can quickly map the variables characterizing the operating conditions (e.g., ambient temperature and irradiation) and Design parameters (e.g., switching frequency and dc link voltage) into variables characterizing the thermal stress of a converter (e.g., mean temperature and temperature variation of its devices). This step can be carried out by training a dedicated artificial neural network (ANN) either on experimental or simulation data. The resulting network is named as $\text{ANN}_{1}$ and can be deployed as an accurate surrogate converter model. This model can then be used to quickly map the yearly mission profile into a thermal stress profile of any selected device for a large set of Design parameter values. The resulting data is then used to train $\text{ANN}_{2}$ , which becomes an overall system representation that explicitly maps the Design parameters into a yearly lifetime consumption. To verify the proposed methodology, $\text{ANN}_{2}$ is deployed in conjunction with the standard converter Design tools on an exemplary grid-connected PV converter case study. This study showed how to find the optimal balance between the Reliability and output filter size in the system with respect to several Design constraints. This paper is also accompanied by a comprehensive dataset that was used for training the ANNs.

  • Design for Reliability and robustness tool platform for power electronic systems study case on motor drive applications
    Applied Power Electronics Conference, 2018
    Co-Authors: Ionut Vernica, Huai Wang, Frede Blaabjerg
    Abstract:

    Because of the high cost of failure, the Reliability performance of power semiconductor devices is becoming a more and more important and stringent factor in many energy conversion applications. Thus, the need for appropriate Reliability analysis of the power electronics emerges. Due to its conventional approach, mainly based on failure statistics from the field, the Reliability evaluation of the power devices is still a challenging task. In order to address the given problem, a MATLAB based Reliability assessment tool has been developed. The Design for Reliability and Robustness (DfR2) tool allows the user to easily investigate the Reliability performance of the power electronic components (or sub-systems) under given input mission profiles and operating conditions. The main concept of the tool and its framework are introduced, highlighting the Reliability assessment procedure for power semiconductor devices. Finally, a motor drive application is implemented and the Reliability performance of the power devices is investigated with the help of the DfR2 tool, and the resulting Reliability metrics are presented.

  • Design for Reliability in power electronics in renewable energy systems status and future
    IEEE International Conference on Power Engineering Energy and Electrical Drives, 2013
    Co-Authors: Huai Wang, Frede Blaabjerg, Rui Wu
    Abstract:

    Advances in power electronics enable efficient and flexible interconnection of renewable sources, loads and electric grids. While targets concerning efficiency of power converters are within reach, recent research endeavors to predict and improve their Reliability to ensure high availability, low maintenance costs, and therefore, low Levelized-Cost-of-Energy (LCOE) of renewable energy systems. This paper presents the prior-art Design for Reliability (DFR) process for power converters and addresses the paradigm shift to Physics-of-Failure (PoF) approach and mission profile based analysis. Moreover, the lifetime prediction of Reliability-critical components IGBT modules is discussed in a 2.3 MW wind power converter. Finally, the challenges and opportunities to achieve more reliable power electronic converters are discussed. Keywords-power electronics; Design for Reliability; Design robustness; renewable energy; wind power converter

  • Design for Reliability in power electronics in renewable energy systems status and future
    International Conference on Power Engineering Energy and Electrical Drives, 2013
    Co-Authors: Huai Wang, Frede Blaabjerg
    Abstract:

    Advances in power electronics enable efficient and flexible interconnection of renewable sources, loads and electric grids. While targets concerning efficiency of power converters are within reach, recent research endeavors to predict and improve their Reliability to ensure high availability, low maintenance costs, and therefore, low Levelized-Cost-of-Energy (LCOE) of renewable energy systems. This paper presents the prior-art Design for Reliability (DFR) process for power converters and addresses the paradigm shift to Physics-of-Failure (PoF) approach and mission profile based analysis. Moreover, the lifetime prediction of Reliability-critical components IGBT modules is discussed in a 2.3 MW wind power converter. Finally, the challenges and opportunities to achieve more reliable power electronic converters are discussed.

Jorn Landkildehus - One of the best experts on this subject based on the ideXlab platform.

  • Transitioning to Physics-of-Failure as a Reliability Driver in Power Electronics
    IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014
    Co-Authors: Huai Wang, John B. Jacobsen, Thorkild Kvisgaard, Peter De Place Rimmen, Wang Huai-yu, Marco Liserre, Jorn Landkildehus
    Abstract:

    Power electronics has progressively gained an important status in power generation, distribution, and consumption. With more than 70% of electricity processed through power electronics, recent research endeavors to improve the Reliability of power electronic systems to comply with more stringent constraints on cost, safety, and availability in various applications. This paper serves to give an overview of the major aspects of Reliability in power electronics and to address the future trends in this multidisciplinary research direction. The ongoing paradigm shift in Reliability research is presented first. Then, the three major aspects of power electronics Reliability are discussed, respectively, which cover physics-of-failure analysis of critical power electronic components, state-of-the-art Design for Reliability process and robustness validation, and intelligent control and condition monitoring to achieve improved Reliability under operation. Finally, the challenges and opportunities for achieving more reliable power electronic systems in the future are discussed.

Wang Huai-yu - One of the best experts on this subject based on the ideXlab platform.

  • Transitioning to Physics-of-Failure as a Reliability Driver in Power Electronics
    IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014
    Co-Authors: Huai Wang, John B. Jacobsen, Thorkild Kvisgaard, Peter De Place Rimmen, Wang Huai-yu, Marco Liserre, Jorn Landkildehus
    Abstract:

    Power electronics has progressively gained an important status in power generation, distribution, and consumption. With more than 70% of electricity processed through power electronics, recent research endeavors to improve the Reliability of power electronic systems to comply with more stringent constraints on cost, safety, and availability in various applications. This paper serves to give an overview of the major aspects of Reliability in power electronics and to address the future trends in this multidisciplinary research direction. The ongoing paradigm shift in Reliability research is presented first. Then, the three major aspects of power electronics Reliability are discussed, respectively, which cover physics-of-failure analysis of critical power electronic components, state-of-the-art Design for Reliability process and robustness validation, and intelligent control and condition monitoring to achieve improved Reliability under operation. Finally, the challenges and opportunities for achieving more reliable power electronic systems in the future are discussed.

Marco Liserre - One of the best experts on this subject based on the ideXlab platform.

  • Transitioning to Physics-of-Failure as a Reliability Driver in Power Electronics
    IEEE Journal of Emerging and Selected Topics in Power Electronics, 2014
    Co-Authors: Huai Wang, John B. Jacobsen, Thorkild Kvisgaard, Peter De Place Rimmen, Wang Huai-yu, Marco Liserre, Jorn Landkildehus
    Abstract:

    Power electronics has progressively gained an important status in power generation, distribution, and consumption. With more than 70% of electricity processed through power electronics, recent research endeavors to improve the Reliability of power electronic systems to comply with more stringent constraints on cost, safety, and availability in various applications. This paper serves to give an overview of the major aspects of Reliability in power electronics and to address the future trends in this multidisciplinary research direction. The ongoing paradigm shift in Reliability research is presented first. Then, the three major aspects of power electronics Reliability are discussed, respectively, which cover physics-of-failure analysis of critical power electronic components, state-of-the-art Design for Reliability process and robustness validation, and intelligent control and condition monitoring to achieve improved Reliability under operation. Finally, the challenges and opportunities for achieving more reliable power electronic systems in the future are discussed.