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Condition Monitoring of DC Link Electrolytic Capacitors in Adjustable Speed Drives
2007 IEEE Industry Applications Annual Meeting, 2007A new preventive maintenance strategy for the sensorless condition monitoring of inverter dc-link aluminum electrolytic capacitors based on equivalent series resistance (ESR) and capacitance C estimation is proposed. The main concept of the proposed method is to estimate the ESR and C of the capacitor, using the inverter whenever the motor is stopped ...
null Kwang-Woon Lee +4 more
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2011 IEEE Trondheim PowerTech, 2011
This paper investigates Peng's control strategy in harmonics compensation with the aim to reduce the size of DC link capacitor. A simple design is proposed to achieve the goal, i.e. implementing a DC voltage regulator to estimate the power loss of the converter and feedback that losses into the original Peng's control strategy. A three-phase, four-wire
C. L. Toh, M. Molinas, L. E. Norum
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This paper investigates Peng's control strategy in harmonics compensation with the aim to reduce the size of DC link capacitor. A simple design is proposed to achieve the goal, i.e. implementing a DC voltage regulator to estimate the power loss of the converter and feedback that losses into the original Peng's control strategy. A three-phase, four-wire
C. L. Toh, M. Molinas, L. E. Norum
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Early diagnosis in DC-link capacitors: electrolytic and films
2018This chapter presents an RUL prediction algorithm based on accelerated life test data and derived physics models for electrolytic capacitors. The main elements are (1) development of the first principles based degradation models; (2) the implementation of a Bayesian-based health state tracking and RUL prediction algorithm based on the Kalman filtering ...
Chetan Kulkarni +2 more
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DC Link Capacitor Active Discharge by IGBT Weak Short Circuit
SAE International Journal of Advances and Current Practices in Mobility, 2019<div class="section abstract"><div class="htmlview paragraph">DC link active discharge is mandatory in new energy vehicles. This paper first analyzes the necessity of active discharge in automotive inverters and then introduces the commonly used discharge methods.
Zhihong Wu +3 more
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Sizing DC-link Capacitors in Complex Automotive High Voltage Systems
2019 7th International Youth Conference on Energy (IYCE), 2019In the high voltage (HV) supply systems of battery electric vehicles (BEV) current oscillations as conducted disturbances are present due to the switching operation of the power electronic devices. These oscillations have a great impact on the power quality and influences the availability and efficiency of the system operation.
Jozsef Gabor Pazmany +2 more
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Review on DC link capacitor issues in variable frequency drives
2017 International Conference on Innovations in Electrical, Electronics, Instrumentation and Media Technology (ICEEIMT), 2017The dc link capacitor is an important energy storage device and also filter out the ripple voltage and current. The main dc link capacitor issues are the size, heating of the capacitor, voltage stability, increases the temperature in the device. This component also maintains the high reliability and long life.
V. Kavitha, K. Subramanian
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Reliability Comparison of DC Link Capacitor Bank for Different Configurations
2019 IEEE International Conference on Industrial Technology (ICIT), 2019A single phase grid connected solar Photovoltaic (PV) inverter requires capacitor banks as an energy buffer at a dc-link. The capacitor bank consists of Aluminum Electrolytic Capacitors (AECs), which are prone to early failure due to various electrical and environmental stresses.
Sagar B. Narale +4 more
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Reliability of capacitors for DC-link applications - An overview
2013DC-link capacitors are an important part in the majority of power electronic converters which contribute to cost, size and failure rate on a considerable scale. From capacitor users' viewpoint, this paper presents a review on the improvement of reliability of DC-link in power electronic converters from two aspects: 1) reliability-oriented DC-link ...
Wang, Huai +1 more
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Reliability of DC-link capacitors in power electronic converters
2015DC-link capacitors are widely used in power electronic converters to balance the instantaneous power difference between the input source and output load and to minimize voltage variation in the DC-link. In some applications, they are also used to provide energy storage. Figure 3.1 shows some typical configurations of power electronic conversion systems
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