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This paper proposes an equivalent circuit model to obtain the transient electrical stress quantitatively in medium voltage medium frequency transformers in modern power electronics. To verify this model, transient simulation is performed on a 1.5 kV/1 kHz transformer, revealing voltage overshoot quantitatively between turns and layers of the transformer’s HV winding. Effects of rise time of the input pulse voltage, stray capacitance of the winding insulation, and their interactions on the voltage overshot magnitude are presented. With these results, we propose limiting the voltage overshoot and, thereafter, enhancing medium voltage medium frequency transformer’s insulation capability, which throws light on the transformer’s insulation design. Additionally, guidance on the future studies on aging and endurance lifetime of the medium voltage medium frequency transformer’s insulation could be given.
Zheng Changjiang; Wang Qian; Wang Huai; Shen Zhan; Claus Leth Bak. Electrical Stress on the Medium Voltage Medium Frequency Transformer. Energies 2021, 14, 5136 .
AMA StyleZheng Changjiang, Wang Qian, Wang Huai, Shen Zhan, Claus Leth Bak. Electrical Stress on the Medium Voltage Medium Frequency Transformer. Energies. 2021; 14 (16):5136.
Chicago/Turabian StyleZheng Changjiang; Wang Qian; Wang Huai; Shen Zhan; Claus Leth Bak. 2021. "Electrical Stress on the Medium Voltage Medium Frequency Transformer." Energies 14, no. 16: 5136.
This paper proposes an intelligent seamless transition controller for smooth transition between grid-connected (GC) and standalone modes of distributed generation (DG) units in the grid. The development of this seamless controller contributes to two main processes in the transition modes: the synchronization process and an islanding process. For the synchronization process, the stationary reference frame phase-locked loop (SRF-PLL) associated with the voltage source inverter (VSI) is modified using the frequency, voltage deviation, and phase angle information. Furthermore, the islanding process is classified as intentional and unintentional islanding scenarios for achieving efficient transition control. Here, the intentional islanding process is achieved with the information that is available in the system due to the planned disconnection. For the unintentional islanding process, a fuzzy inference system (FIS) is used to modify the conventional droop control using the information of change in active power, voltage, and frequency. To identify the action of the proposed approach during the transition process, numerical simulations are conducted with the hardware-in-loop (HIL) simulator by developing a
Mohammed Khan; Ahteshamul Haque; Frede Blaabjerg; Varaha Kurukuru; Huai Wang. Intelligent Transition Control between Grid-Connected and Standalone Modes of Three-Phase Grid-Integrated Distributed Generation Systems. Energies 2021, 14, 3979 .
AMA StyleMohammed Khan, Ahteshamul Haque, Frede Blaabjerg, Varaha Kurukuru, Huai Wang. Intelligent Transition Control between Grid-Connected and Standalone Modes of Three-Phase Grid-Integrated Distributed Generation Systems. Energies. 2021; 14 (13):3979.
Chicago/Turabian StyleMohammed Khan; Ahteshamul Haque; Frede Blaabjerg; Varaha Kurukuru; Huai Wang. 2021. "Intelligent Transition Control between Grid-Connected and Standalone Modes of Three-Phase Grid-Integrated Distributed Generation Systems." Energies 14, no. 13: 3979.
Zhengge Chen; Bochen Liu; Yongheng Yang; Pooya Davari; Huai Wang. Bridgeless PFC Topology Simplification and Design for Performance Benchmarking. IEEE Transactions on Power Electronics 2021, 36, 5398 -5414.
AMA StyleZhengge Chen, Bochen Liu, Yongheng Yang, Pooya Davari, Huai Wang. Bridgeless PFC Topology Simplification and Design for Performance Benchmarking. IEEE Transactions on Power Electronics. 2021; 36 (5):5398-5414.
Chicago/Turabian StyleZhengge Chen; Bochen Liu; Yongheng Yang; Pooya Davari; Huai Wang. 2021. "Bridgeless PFC Topology Simplification and Design for Performance Benchmarking." IEEE Transactions on Power Electronics 36, no. 5: 5398-5414.
This letter proposes a Safe Operating Area (SOA) concept for film capacitors in DC-link applications. The SOA is presented by capacitor voltage and ripple current, considering the impact of ambient temperature, degradation, and parameter variance. The theoretical derivations and proof-of-concept experimental verifications are given.
Shuai Liu; Zhan Shen; Huai Ge Wang. Safe Operating Area of DC-Link Film Capacitors. IEEE Transactions on Power Electronics 2021, 36, 11014 -11018.
AMA StyleShuai Liu, Zhan Shen, Huai Ge Wang. Safe Operating Area of DC-Link Film Capacitors. IEEE Transactions on Power Electronics. 2021; 36 (10):11014-11018.
Chicago/Turabian StyleShuai Liu; Zhan Shen; Huai Ge Wang. 2021. "Safe Operating Area of DC-Link Film Capacitors." IEEE Transactions on Power Electronics 36, no. 10: 11014-11018.
This letter proposes a simplified converter-level on-state voltage measurement circuit for power semiconductor devices, without an external power supply and self-power circuit. It has a reduced component count and circuit complexity, and retains the plug-and-play feature, comparable measurement accuracy, and dynamic response as recently reported methods. A proof-of-concept prototype is developed and tested for a three-phase inverter application.
Yingzhou Peng; Huai Ge Wang. A Simplified On-State Voltage Measurement Circuit for Power Semiconductor Devices. IEEE Transactions on Power Electronics 2021, 36, 10993 -10997.
AMA StyleYingzhou Peng, Huai Ge Wang. A Simplified On-State Voltage Measurement Circuit for Power Semiconductor Devices. IEEE Transactions on Power Electronics. 2021; 36 (10):10993-10997.
Chicago/Turabian StyleYingzhou Peng; Huai Ge Wang. 2021. "A Simplified On-State Voltage Measurement Circuit for Power Semiconductor Devices." IEEE Transactions on Power Electronics 36, no. 10: 10993-10997.
Interleaved power factor correction (PFC) is widely used circuit topology due to good efficiency and power density for single-switch boost PFC. As the differential mode (DM) electromagnetic interference (EMI) noise magnitude depends upon the input current ripple, this research details a comprehensive study of DM EMI filter design for interleaved boost PFC with the aim of minimizing the component size. It is also demonstrated that the different numbers of interleaved stages and switching frequency influence the filter attenuation requirement and, thus, the EMI filter size. First, an analytical model is derived on the basis of the Norton equivalent circuit model for the differential mode noises of interleaved boost PFC within the frequency range of 9–500 kHz. The derived model can help identify the proper phase shifting among the interleaved boost converters in order to minimize the considered differential mode noises at the filter design frequency. So, a novel phase-shift method is developed to get a minimized attenuation required by a filter in Band B. Further, a volume optimization of the required DM filter was introduced based on the calculated filter attenuation and volumetric component parameters. Based on the obtained results, unconventional and conventional phase shifts have demonstrated a good performance in decreasing the EMI filter volume in Band B and Band A, respectively. A 2-kW interleaved PFC case study is presented to verify the theoretical analyses and the impact of phase-shifting on EMI filter size.
Naser Nourani Esfetanaj; Huai Wang; Frede Blaabjerg; Pooya Davari. Differential Mode Noise Estimation and Filter Design for Interleaved Boost Power Factor Correction Converters. Applied Sciences 2021, 11, 2716 .
AMA StyleNaser Nourani Esfetanaj, Huai Wang, Frede Blaabjerg, Pooya Davari. Differential Mode Noise Estimation and Filter Design for Interleaved Boost Power Factor Correction Converters. Applied Sciences. 2021; 11 (6):2716.
Chicago/Turabian StyleNaser Nourani Esfetanaj; Huai Wang; Frede Blaabjerg; Pooya Davari. 2021. "Differential Mode Noise Estimation and Filter Design for Interleaved Boost Power Factor Correction Converters." Applied Sciences 11, no. 6: 2716.
High penetration of power electronics due to the concentration of switching frequency in the range of 9-150 kHz, may create new challenging issues. Currently, regarding the recent version standard (IEC 61000-6-3), there is a lack of enough insight and fundamental studies despite reported Electromagnetic Interference (EMI) noise problems in this frequency range. Hence, this paper proposes a time-frequency analytical modeling method for characterizing Differential Mode (DM) noise in a single-phase Power Factor Correction (PFC) converter in this new frequency range. The provided comparative simulation analysis shows the proposed method's ability to estimate DM noise with a 9-150 kHz frequency range at high accuracy utilizing the double Fourier analysis method. Moreover, the obtained experimental results on a 1 kW single-phase boost PFC converter validate the proposed EMI modeling approach's effectiveness, demonstrating an error of less than 1.8 dB for the considered experimental case studies.
Naser Nourani Esfetanaj; Huai Wang; Frede Blaabjerg; Pooya Davari. Differential mode noise prediction and analysis in single-phase boost PFC for the new frequency range of 9- 150 kHz. IEEE Journal of Emerging and Selected Topics in Industrial Electronics 2021, PP, 1 -1.
AMA StyleNaser Nourani Esfetanaj, Huai Wang, Frede Blaabjerg, Pooya Davari. Differential mode noise prediction and analysis in single-phase boost PFC for the new frequency range of 9- 150 kHz. IEEE Journal of Emerging and Selected Topics in Industrial Electronics. 2021; PP (99):1-1.
Chicago/Turabian StyleNaser Nourani Esfetanaj; Huai Wang; Frede Blaabjerg; Pooya Davari. 2021. "Differential mode noise prediction and analysis in single-phase boost PFC for the new frequency range of 9- 150 kHz." IEEE Journal of Emerging and Selected Topics in Industrial Electronics PP, no. 99: 1-1.
Condition monitoring is a proactive measure to realize operation optimization, predictive maintenance, and high availability of Power Electronic Systems (PES). It is demanded by reliability-, safety-, or availability-critical applications. The core of condition monitoring is a prediction based on historical and present information. Artificial Intelligence (AI) could play a role in addressing optimization, regression, and classification problems in predicting the operation or health status of PES. Besides AI algorithms, quality data collection, objective formulation, and result validation require an in-depth understanding of the PES. The nexus between PES and AI expects to create overarching effects in the condition monitoring area. This article presents exploratory efforts in the data-driven condition monitoring of PES in the view of existing challenges and emerging opportunities.
Shuai Zhao; Huai Wang. Enabling Data-Driven Condition Monitoring of Power Electronic Systems With Artificial Intelligence: Concepts, Tools, and Developments. IEEE Power Electronics Magazine 2021, 8, 18 -27.
AMA StyleShuai Zhao, Huai Wang. Enabling Data-Driven Condition Monitoring of Power Electronic Systems With Artificial Intelligence: Concepts, Tools, and Developments. IEEE Power Electronics Magazine. 2021; 8 (1):18-27.
Chicago/Turabian StyleShuai Zhao; Huai Wang. 2021. "Enabling Data-Driven Condition Monitoring of Power Electronic Systems With Artificial Intelligence: Concepts, Tools, and Developments." IEEE Power Electronics Magazine 8, no. 1: 18-27.
Condition monitoring of power devices is highly critical for safety and mission-critical power electronics systems. Typically, these systems are subjected to noise in harsh operational environment contaminating the degradation measurements. In dynamic applications, the system duty cycle may not be periodic and results in aperiodic degradation measurements. Both these factors negatively affect the health assessment performance. In order to address these challenges, this article proposes a health state estimation and remaining useful life prediction method for power devices in the presence of noisy and aperiodic degradation measurements. For this purpose, three-source uncertainties in the degradation modeling, including the temporal uncertainty, measurement uncertainty, and device-to-device heterogeneity, are formulated in a Gamma state-space model to ensure health assessment accuracy. In order to learn the device degradation behavior, a model parameter estimation method is developed based on a stochastic expectation-maximization algorithm. The accuracy and robustness of the proposed method are verified by numerical analysis under various noise levels. Finally, the findings are justified using SiC metal–oxide-semiconductor field-effect transistors (MOSFETs) accelerated aging test data.
Shuai Zhao; Yingzhou Peng; Fei Yang; Enes Ugur; Bilal Akin; Huai Wang. Health State Estimation and Remaining Useful Life Prediction of Power Devices Subject to Noisy and Aperiodic Condition Monitoring. IEEE Transactions on Instrumentation and Measurement 2021, 70, 1 -16.
AMA StyleShuai Zhao, Yingzhou Peng, Fei Yang, Enes Ugur, Bilal Akin, Huai Wang. Health State Estimation and Remaining Useful Life Prediction of Power Devices Subject to Noisy and Aperiodic Condition Monitoring. IEEE Transactions on Instrumentation and Measurement. 2021; 70 ():1-16.
Chicago/Turabian StyleShuai Zhao; Yingzhou Peng; Fei Yang; Enes Ugur; Bilal Akin; Huai Wang. 2021. "Health State Estimation and Remaining Useful Life Prediction of Power Devices Subject to Noisy and Aperiodic Condition Monitoring." IEEE Transactions on Instrumentation and Measurement 70, no. : 1-16.
This paper discloses part of an invention on plug-and-play converter-level on-state voltage measurement methods for power semiconductor devices. To exclude the external power supply required in on-state voltage measurement circuits, a self-power solution is proposed to provide the required bidirectional low-voltage power sources. The application of the measurement circuit with the proposed self-power solution is demonstrated for a single-switch, a single-phase inverter, and a three-phase inverter.
Yingzhou Peng; Huai Wang. A Self-Power Method for a Converter-Level on-State Voltage Measurement Concept. IEEE Transactions on Power Electronics 2021, 36, 8743 -8751.
AMA StyleYingzhou Peng, Huai Wang. A Self-Power Method for a Converter-Level on-State Voltage Measurement Concept. IEEE Transactions on Power Electronics. 2021; 36 (8):8743-8751.
Chicago/Turabian StyleYingzhou Peng; Huai Wang. 2021. "A Self-Power Method for a Converter-Level on-State Voltage Measurement Concept." IEEE Transactions on Power Electronics 36, no. 8: 8743-8751.
Ju Xue; Zhen Xin; Huai Wang; Poh Chiang Loh; Frede Blaabjerg. An Improved di/dt-RCD Detection for Short-Circuit Protection of SiC mosfet. IEEE Transactions on Power Electronics 2021, 36, 12 -17.
AMA StyleJu Xue, Zhen Xin, Huai Wang, Poh Chiang Loh, Frede Blaabjerg. An Improved di/dt-RCD Detection for Short-Circuit Protection of SiC mosfet. IEEE Transactions on Power Electronics. 2021; 36 (1):12-17.
Chicago/Turabian StyleJu Xue; Zhen Xin; Huai Wang; Poh Chiang Loh; Frede Blaabjerg. 2021. "An Improved di/dt-RCD Detection for Short-Circuit Protection of SiC mosfet." IEEE Transactions on Power Electronics 36, no. 1: 12-17.
The electrification of the transportation sector is moving on at a fast pace. All car manufacturers have strong programs to electrify their car fleet to fulfill the demands of society and customers by offering carbon-neutral technologies to bring goods and persons from one location to another. Power electronics technology is, in this evolution, essential and also in a rapid development technology-wise. Some of the introduced technologies are quite mature, and the systems designed must have high reliability as they can be quite complicated from an electrical perspective. Therefore, this article focuses on the reliability of the used power electronic systems applied in electric vehicles (EVs) and hybrid EVs (HEVs). It introduces the reliability requirements and challenges given for the power electronics applied in EV/HEV applications. Then, the advances in power electronic components to address the reliability challenges are introduced as they individually contribute to the overall system reliability. The reliability-oriented design methodology is also discussed, including two examples: an EV onboard charger and the drive train inverter. Finally, an outlook in terms of research opportunities in power electronics reliability related to EV/HEVs is provided. It can be concluded that many topics are already well handled in terms of reliability, but issues related to complete new technology introduction are important to keep the focus on.
Frede Blaabjerg; Huai Wang; Ionut Vernica; Bochen Liu; Pooya Davari. Reliability of Power Electronic Systems for EV/HEV Applications. Proceedings of the IEEE 2020, 109, 1060 -1076.
AMA StyleFrede Blaabjerg, Huai Wang, Ionut Vernica, Bochen Liu, Pooya Davari. Reliability of Power Electronic Systems for EV/HEV Applications. Proceedings of the IEEE. 2020; 109 (6):1060-1076.
Chicago/Turabian StyleFrede Blaabjerg; Huai Wang; Ionut Vernica; Bochen Liu; Pooya Davari. 2020. "Reliability of Power Electronic Systems for EV/HEV Applications." Proceedings of the IEEE 109, no. 6: 1060-1076.
The operating temperature of power semiconductor devices is one of the limiting factors that affects the overall reliability performance of the power electronic system. Therefore, an accurate thermal loading estimation is required for realistic reliability prediction of power electronics. However, the thermal analysis is typically performed based on rough approximations of the thermal impedance characteristic, which is provided by the manufacturer in the device datasheet. In this paper, the uncertainties introduced by the variation of IGBT thermal impedance on the lifetime prediction of a motor drive IGBT module are investigated and quantified. Thus, a better understanding of the underlying assumptions of the reliability estimation procedure and of the error margins introduced by the thermal modeling of power devices can be acquired. An analytical mission-profile-based reliability assessment methodology is used to quantify the impact of unevenly distributed IGBT thermal impedance on the power module wear-out failure under three different scenarios (e.g., realistic, worst-case, and best-case).
I. Vernica; U.M. Choi; H. Wang; F. Blaabjerg. Wear-out failure of an IGBT module in motor drives due to uneven thermal impedance of power semiconductor devices. Microelectronics Reliability 2020, 114, 113800 .
AMA StyleI. Vernica, U.M. Choi, H. Wang, F. Blaabjerg. Wear-out failure of an IGBT module in motor drives due to uneven thermal impedance of power semiconductor devices. Microelectronics Reliability. 2020; 114 ():113800.
Chicago/Turabian StyleI. Vernica; U.M. Choi; H. Wang; F. Blaabjerg. 2020. "Wear-out failure of an IGBT module in motor drives due to uneven thermal impedance of power semiconductor devices." Microelectronics Reliability 114, no. : 113800.
The dc-link capacitor is considered as a weak component in Photovoltaic (PV) inverter systems and its reliability needs to be evaluated and tested during the product development. Conventional reliability testing methods for capacitors are typically carried out under constant loading conditions, which do not reflect the real operating conditions (e.g., mission profile) of the dc-link capacitor in PV inverters. To address this issue, a new reliability testing concept for the dc-link capacitor in PV inverters is proposed in this paper. In contrast to the conventional method, the proposed reliability testing method designs the test profile through the modification of the original mission profile (e.g., solar irradiance and ambient temperature) in order to maintain the test condition as close to the real application as possible. A certain acceleration factor is applied during the mission profile modification based on the lifetime model of the capacitor, in order to increase the thermal stress of the dc-link capacitor during test, and thereby effectively reduce the testing time.
Ariya Sangwongwanich; Yanfeng Shen; Andrii Chub; Elizaveta Liivik; Dmitri Vinnikov; Huai Wang; Frede Blaabjerg. Design for Accelerated Testing of DC-Link Capacitors in Photovoltaic Inverters Based on Mission Profiles. IEEE Transactions on Industry Applications 2020, 57, 741 -753.
AMA StyleAriya Sangwongwanich, Yanfeng Shen, Andrii Chub, Elizaveta Liivik, Dmitri Vinnikov, Huai Wang, Frede Blaabjerg. Design for Accelerated Testing of DC-Link Capacitors in Photovoltaic Inverters Based on Mission Profiles. IEEE Transactions on Industry Applications. 2020; 57 (1):741-753.
Chicago/Turabian StyleAriya Sangwongwanich; Yanfeng Shen; Andrii Chub; Elizaveta Liivik; Dmitri Vinnikov; Huai Wang; Frede Blaabjerg. 2020. "Design for Accelerated Testing of DC-Link Capacitors in Photovoltaic Inverters Based on Mission Profiles." IEEE Transactions on Industry Applications 57, no. 1: 741-753.
This is a preprint version of the manuscript submitted to IEEE on June 4, 2020.This paper gives an overview of the Artificial Intelligence (AI) applications for power electronic systems. The three distinctive life-cycle phases, design, control, and maintenance are correlated with one or more tasks to be addressed by AI, including optimization, classification, regression, and data structure exploration. The applications of four categories of AI are discussed, which are expert system, fuzzy logic, metaheuristic method, and machine learning. More than 500 publications have been reviewed to identify the common understandings, practical implementation challenges, and research opportunities in the application of AI for power electronics.
Shuai Zhao; Frede Blaabjerg; Huai Wang. An overview of artificial intelligence applications for power electronics. 2020, 1 .
AMA StyleShuai Zhao, Frede Blaabjerg, Huai Wang. An overview of artificial intelligence applications for power electronics. . 2020; ():1.
Chicago/Turabian StyleShuai Zhao; Frede Blaabjerg; Huai Wang. 2020. "An overview of artificial intelligence applications for power electronics." , no. : 1.
This is a preprint version of the manuscript submitted to IEEE on June 4, 2020.This paper gives an overview of the Artificial Intelligence (AI) applications for power electronic systems. The three distinctive life-cycle phases, design, control, and maintenance are correlated with one or more tasks to be addressed by AI, including optimization, classification, regression, and data structure exploration. The applications of four categories of AI are discussed, which are expert system, fuzzy logic, metaheuristic method, and machine learning. More than 500 publications have been reviewed to identify the common understandings, practical implementation challenges, and research opportunities in the application of AI for power electronics.
Shuai Zhao; Frede Blaabjerg; Huai Wang. An overview of artificial intelligence applications for power electronics. 2020, 1 .
AMA StyleShuai Zhao, Frede Blaabjerg, Huai Wang. An overview of artificial intelligence applications for power electronics. . 2020; ():1.
Chicago/Turabian StyleShuai Zhao; Frede Blaabjerg; Huai Wang. 2020. "An overview of artificial intelligence applications for power electronics." , no. : 1.
Power devices are among the reliability-critical components in the Photovoltaic (PV) inverter, whose failures are normally related to the thermal stress. Therefore, thermal modeling is required for estimating the thermal stress of the power devices under long-term operating conditions of the PV inverter, i.e., mission profile. Unfortunately, most of the thermal models developed for the power device are not suitable for a long-term thermal stress analysis (e.g., days to months), and there is usually a trade-off between the model accuracy and the computational efficiency. To address this challenge, a reduced-order thermal model for PV inverters is proposed in this paper, where the model simplification is based on the thermal impedance characteristic and the mission profile dynamics. The modeling accuracy is evaluated by comparing the estimated thermal stress with the experimental results from a PV inverter test-bench, where daily mission profiles with various dynamics are tested. According to the results, the proposed method offers a relatively high model accuracy (similar to the full-order thermal model) while the computational efficiency is improved significantly, making it suitable for long-term thermal stress modeling applications.
Ariya Sangwongwanich; Huai Wang; Frede Blaabjerg. Reduced-Order Thermal Modeling for Photovoltaic Inverters Considering Mission Profile Dynamics. IEEE Open Journal of Power Electronics 2020, 1, 407 -419.
AMA StyleAriya Sangwongwanich, Huai Wang, Frede Blaabjerg. Reduced-Order Thermal Modeling for Photovoltaic Inverters Considering Mission Profile Dynamics. IEEE Open Journal of Power Electronics. 2020; 1 (99):407-419.
Chicago/Turabian StyleAriya Sangwongwanich; Huai Wang; Frede Blaabjerg. 2020. "Reduced-Order Thermal Modeling for Photovoltaic Inverters Considering Mission Profile Dynamics." IEEE Open Journal of Power Electronics 1, no. 99: 407-419.
This paper gives an overview of the Artificial Intelligence (AI) applications for power electronic systems. The three distinctive life-cycle phases, design, control, and maintenance are correlated with one or more tasks to be addressed by AI, including optimization, classification, regression, and data structure exploration. The applications of four categories of AI are discussed, which are expert system, fuzzy logic, metaheuristic method, and machine learning. More than 500 publications have been reviewed to identify the common understandings, practical implementation challenges, and research opportunities in the application of AI for power electronics.
Shuai Zhao; Frede Blaabjerg; Huai Wang. An Overview of Artificial Intelligence Applications for Power Electronics. IEEE Transactions on Power Electronics 2020, 36, 4633 -4658.
AMA StyleShuai Zhao, Frede Blaabjerg, Huai Wang. An Overview of Artificial Intelligence Applications for Power Electronics. IEEE Transactions on Power Electronics. 2020; 36 (4):4633-4658.
Chicago/Turabian StyleShuai Zhao; Frede Blaabjerg; Huai Wang. 2020. "An Overview of Artificial Intelligence Applications for Power Electronics." IEEE Transactions on Power Electronics 36, no. 4: 4633-4658.
Capacitors are widely used in dc links of power electronic converters to balance power, suppress voltage ripple, and store short-term energy. Condition monitoring (CM) of dc-link capacitors has great significance in enhancing the reliability of power converter systems. Over the past few years, many efforts have been made to realize CM of dc-link capacitors. This paper gives an overview and a comprehensive comparative evaluation of them with emphasis on the application objectives, implementation methods, and monitoring accuracy when being used. First, the design procedure for the condition monitoring of capacitors is introduced. Second, the main capacitor parameters estimation principles are summarized. According to these principles, various possible CM methods are derived in a step-by-step manner. On this basis, a comprehensive review and comparison of CM schemes for different types of dc-link applications are provided. Finally, application recommendations and future research trends are presented.
Zhaoyang Zhao; Pooya Davari; Wei Guo Lu; Huai Wang; Frede Ge Blaabjerg. An Overview of Condition Monitoring Techniques for Capacitors in DC-Link Applications. IEEE Transactions on Power Electronics 2020, 36, 3692 -3716.
AMA StyleZhaoyang Zhao, Pooya Davari, Wei Guo Lu, Huai Wang, Frede Ge Blaabjerg. An Overview of Condition Monitoring Techniques for Capacitors in DC-Link Applications. IEEE Transactions on Power Electronics. 2020; 36 (4):3692-3716.
Chicago/Turabian StyleZhaoyang Zhao; Pooya Davari; Wei Guo Lu; Huai Wang; Frede Ge Blaabjerg. 2020. "An Overview of Condition Monitoring Techniques for Capacitors in DC-Link Applications." IEEE Transactions on Power Electronics 36, no. 4: 3692-3716.
With the increasing use of supercapacitors (SCs) in the transportation and energy sectors, reliability which relates to the lifecycle performance and cost, becomes an important aspect to consider. While existing overviews of SCs mainly focus on materials, electrical and thermal modeling, voltage balancing, etc., this paper reviews the failure mechanisms, lifetime modeling, and reliability-oriented design of three types of SCs in energy storage applications. Systematic discussions on electric double-layer capacitors, pseudo-capacitors, and hybrid SCs are given. Scientific challenges and opportunities are also identified from an application perspective.
Shuai Liu; Li Wei; Huai Wang. Review on reliability of supercapacitors in energy storage applications. Applied Energy 2020, 278, 115436 .
AMA StyleShuai Liu, Li Wei, Huai Wang. Review on reliability of supercapacitors in energy storage applications. Applied Energy. 2020; 278 ():115436.
Chicago/Turabian StyleShuai Liu; Li Wei; Huai Wang. 2020. "Review on reliability of supercapacitors in energy storage applications." Applied Energy 278, no. : 115436.