This paper proposes a capacitor condition monitoring (CM) method for modular multilevel converter (MMC) in motor drive applications. The proposed method is based on wavelet decomposition of ...
The capacitor monitoring is one of the important issues in the MMC. This paper proposed a reference submodule (RSM)-based capacitor monitoring strategy for the capacitance estimation in the MMC, where the capacitances in the monitoring SMs can be estimated based on the capacitor voltage relationship between the RSM and the monitoring SMs. …
This paper classifies the capacitor condition monitoring methods into three categories, then the respective technology evolution in the last two decades is summarized, and the state-of-the-art research and the future opportunities targeting for industry applications are given. Capacitors are one type of reliability-critical components …
The condition monitoring system proposed in this paper is based on the online estimation of the capacitor''s equivalent series resistance using the switching frequency components of the dc-link capacitor voltage and current, and is adapted for the condition monitoring of capacitors in industrial power converters.
A Data-Driven Condition Monitoring Method for Capacitor in Modular Multilevel Converter (MMC) Shuyu Ou∗, Mahyar Hassanifar †, Martin Votava‡, Marius Langwasser, Marco Liserre†‡, Ariya Sangwongwanich ∗, Subham Sahoo, and Frede Blaabjerg ∗Department of Energy, Aalborg University, Aalborg, Denmark ...
This paper classifies the capacitor condition monitoring methods into three categories, then the respective technology evolution in the last two decades is summarized, and the state-of-the-art research and the future opportunities targeting for industry applications are given. Capacitors are one type of reliability-critical components in power electronic …
Capacitors are widely used in dc links of power electronic converters to balance power, suppress voltage ripple, and store short-term energy. Condition …
Capacitors are one type of reliability-critical components in power electronic systems. In the last two decades, many efforts in academic research have …
Conditional Monitoring Techniques for Capacitors IV.Electromagnetic Spectral based PHM Approach (E-PHM) Theory Results. V. Conclusion. PSMA/IEEE Capacitor Workshop …
The condition monitoring approach proposed in this paper allows for on-line estimationof the ESRwhichis considered tobe one of the best indicators of capacitor degradation. Computer simulation results, considering a DC-DC buck converter, provide evidence of the effectiveness of the capacitor condition monitoring scheme proposed in this paper.
Condition monitoring of these capacitors have become necessary to ensure the reliable and efficient operation of the modular multilevel converter system. In this paper, a digital twin concept based condition monitoring method of submodule capacitors of modular multilevel converter is proposed. The proposed method does not require any additional ...
Capacitor is one of the reliability critical components in power electronic systems. In the last two decades, many efforts in the academic research have been devoted to the condition monitoring of capacitors to estimate their health status. Industry applications demand more reliable power electronics products with preventive maintenances. Nevertheless, …
Capacitor Condition Monitoring for the Low-Capacitance StatCom: An Online Approach Ezequiel Rodriguez, Student Member, IEEE, Ramon Leyva, Senior Member, IEEE, Glen G. Farivar, Senior
This paper presents a very simple and cheap off-line technique that is able to evaluate the aluminum electrolytic capacitors condition. Aluminum electrolytic capacitors equivalent circuit is composed by an internal resistance and a capacitance. The capacitors internal resistance increases with aging while the capacitance decreases. …
Therefore, studying condition monitoring (CM) of capacitors is of great significance for improving the reliability of capacitor operation and achieving efficient and predictable maintenance. The state monitoring methods proposed in the literature for tracking degradation processes can be roughly divided into three categories: offline, quasi ...
Besides the capacitance, ESR in the equivalent circuit model can also be used to monitor the health status since ESR can deteriorate faster than the capacitance and reaches the end-of-life criteria much earlier than the capacitance, as reported in [17, 18, 19, 20] these cases, if the condition monitoring method only monitors capacitance, the converter …
Most of the condition monitoring methods for both single capacitors and capacitor banks are based on the estimation of capacitance C and equivalent series …
ZHAO et al.: OVERVIEW OF CONDITION MONITORING TECHNIQUES FOR CAPACITORS IN DC-LINK APPLICATIONS 3693 and discuss on the feasibility of the new state-of-the-art techniques. 2) A comprehensive design procedure of CM for capacitors is not given in [102] and [103], which is important for
Condition monitoring methods for both single capacitors and capacitor banks are based on the evaluation of the capacitance C and/or the ESR, which indicate …
capacitor condition monitoring methods into three categories, then the respective technology evolution in the last two decades is summarized. Finally, the state-of-the-art research and the future
This paper classifies the capacitor condition monitoring methods into three categories, then the respective technology evolution in the last two decades is summarized, and the state-of-the-art research …
Capacitor condition monitoring in modular multilevel converters (MMCs) has become a must in some critical industry applications. This is because capacitors represent a vulnerable component in power electronic converters, and MMCs usually integrate hundreds of them. This paper presents a new submodule (SM) capacitor condition monitoring …
First, the capacitor equivalent circuit and capacitor parameter characteristics in the MMC are presented, and a brief description is given for the capacitor aging. Then, several capacitor monitoring methods and the capacitor lifetime prediction method are introduced for the MMC, such as the Kalman filter algorithm and the …
The modular multilevel converter (MMC) is developing rapidly as a key technology for future grid applications. Submodule capacitor reliability is a major concern. Among these reliability problems, capacitor failures accounted for about one-third. Therefore, it is meaningful to monitor the aging of the capacitor and determine when to change it. In this paper, a …
Capacitor Condition Monitoring for the Low-Capacitance StatCom: An Online Approach Ezequiel Rodriguez, Student Member, IEEE, Ramon Leyva, Senior Member, IEEE, Glen G. Farivar, Senior
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 …
Capacitors are one type of reliability-critical components in power electronic systems. In the last two decades, many efforts in academic research have been devoted to the condition monitoring of ...
in capacitor condition monitoring. For the AEC, the capacitor reach the end-of-life time if one of these criteria is satisfied [23]: • Capacitance reduces to 80% of the initial value; • …
The cascaded H-bridge low-capacitance static compensator (LC-StatCom) uses relatively small capacitors subjected to large voltage oscillations. When a capacitor degrades, its capacitance differs from the nominal value, and this deteriorates the StatCom operation and safety. This is an important reason to monitor the capacitors …
The curves of capacitor degradation and the general scheme for condition monitoring of the capacitors are presented in Figure 6 a,b []. The EOL of Al-Caps is realized at a capacitance reduction of 20% or twice …
Capacitor is one of the reliability critical components in power electronic systems. In the last two decades, many efforts in the academic research have been devoted to the condition monitoring of capacitors to estimate their health status. Industry applications demand more reliable power electronics products with preventive …
DC-DC converters are used to interconnect solar photovoltaic (PV) to a dc micro grid or to a battery. Capacitors are connected at the output of a PV terminal to minimize power pulsation. Operational life of capacitor decreases due to various electrical and environmental parameters. In this paper, a method for condition monitoring of the …
Therefore, studying condition monitoring (CM) of capacitors is of great significance for improving the reliability of capacitor operation and achieving efficient and …
A Reference Submodule Based Capacitor Condition Monitoring Method for Modular Multilevel Converters. IEEE Trans. Power Electron. 2020, 35, 6691–6696. [Google Scholar] Geng, Z.; Han, M.; Zhou, G. Switching Signals Based Condition Monitoring for Submodule Capacitors in Modular Multilevel Converters. IEEE Trans ...
This article proposes a capacitor condition monitoring (CM) method for modular multilevel converter (MMC) in motor drive applications. The proposed method is based on wavelet decomposition of transient voltage signals, which is independent of modulation schemes and control strategies. The equivalent series resistance (ESR) change can be detected with a …
Usage of the electrolytic capacitor is a must for all power electronic converters. The reliability of electrolytic capacitors is critical for the product to be more reliable. In the past, there have been significant steps in the academic study dedicated to the condition monitoring of electrolytic capacitors to predict the state of capacitor health. …
Then, several capacitor monitoring methods and the capacitor lifetime prediction method are introduced for the MMC, such as the Kalman filter algorithm and …
An ageing condition monitoring method for the aluminum electrolytic capacitor (AEC) is presented. The target AEC is used in an ac-dc-ac variable speed drive (VSD) which usually contains an LCR ...