Optimized Selection and Utilization of DC-Link Capacitor in a Single-Phase PV Grid Inverter System

Collins, C. T.; Li, Ran

doi:10.23919/ipec.2018.8507993

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…5(a), a current control voltage source is used to represent R ca,i and R ca,j . Based on the power loss flowing through the nonlinear resistors, the case temperature can be calculated from the nonlinear equations in (6) and (9). The thermal coupling resistance R thij (i = j) is also temperature and power loss dependent, which should be a nonlinear resistor.…”

Section: ) Structure Diagram Of the Analytical Modelmentioning

confidence: 99%

“…The design criteria of a capacitor bank depend on the applications and the user's requirements. For example, in the Photovoltaic (PV) applications, the minimum capacitance, maximum losses, and maximum volume are the essential factors should be considered [9,10]. In power supply application, except for the factors mentioned above, the energy storage, differential-mode electromagnetic-interference level, and weight that should be considered [11,12].…”

Section: Introductionmentioning

confidence: 99%

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Analytical Modeling and Design of Capacitor Bank Considering Thermal Coupling Effect

Wang

2021

IEEE Trans. Power Electron.

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The inevitable electro-thermal coupling among capacitors in a bank will lead to non-negligible errors to the temperature as well as the lifetime prediction of the individual capacitor. In this paper, the analytical thermal models with the corresponding design for capacitor banks are proposed considering the thermal coupling effect. Firstly, a measurement based lump thermal model and a physical model-based analytical thermal model are proposed. Then, with the help of the proposed thermal models, the design method for the thermal matching of capacitors in a bank is proposed by optimizing the parameters of individual capacitors, such as the rated parameters and actual loading. To validate the accuracy of the proposed design, case studies based on a capacitor bank with nine capacitors are presented.

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Section: ) Structure Diagram Of the Analytical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analytical Modeling and Design of Capacitor Bank Considering Thermal Coupling Effect

Wang

2021

IEEE Trans. Power Electron.

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“…The MPFC-Cap has an operational lifetime more than ten times compared with Al-Caps. Then, the cost of replacement will outweigh the price difference between the different types of capacitors [18]. The other studies combine the Al-Caps and MPPF-Caps to significantly reduce heating of the electrolytic capacitors, which translates directly into much longer service life [19,20].…”

Section: Introductionmentioning

confidence: 99%

Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters

Dang

Kwak

2020

Sensors

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Capacitors are critical components of power converter systems as they influence the cost, size, performance, and scale of such systems. However, capacitors exhibit the highest degeneration and breakdown rates among all power converter components due to their wear-out failures and short lifespans. Therefore, condition monitoring is a vital process to estimate the health status of capacitors and to provide predictive maintenance for ensuring stability in the operation of power converter systems. The equivalent series resistance (ESR) and the capacitance of the capacitor are two widely used parameters for evaluating the health status of capacitors. Unlike the ESR, the capacitance of a capacitor is suitable for the health monitoring of various types of capacitors; therefore, it is more preferable for large-scale systems. This paper presents an overview of previous research addressing this aspect of capacitors and provides a better understanding of the capacitance monitoring of capacitors utilized in power converter systems.

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ZVS Boundary Analysis and Design Guideline of MV Grid-Compliant Solid-State Transformer for DC Fast Charger Applications

Prabowo

Sharma

Bhattacharya

et al. 2022

2022 IEEE Energy Conversion Congress and Exposition (ECCE)

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Optimized Selection and Utilization of DC-Link Capacitor in a Single-Phase PV Grid Inverter System

Cited by 4 publications

References 10 publications

Analytical Modeling and Design of Capacitor Bank Considering Thermal Coupling Effect

Analytical Modeling and Design of Capacitor Bank Considering Thermal Coupling Effect

Review of Health Monitoring Techniques for Capacitors Used in Power Electronics Converters

ZVS Boundary Analysis and Design Guideline of MV Grid-Compliant Solid-State Transformer for DC Fast Charger Applications

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