Results 1 to 10 of about 1,602 (246)

Review of the calculation of DC-link capacitor current

Frontiers in Energy Research, 2023
In the voltage source power electronic converter, DC-link capacitors usually work as buffering elements between the DC and AC sides. The high failure rate and large space occupied by the DC-link capacitors directly affect the reliability and power ...
Cheng Guo, Ziyue Xin, Jing Han, Liangdeng Hu, Bin Lu   +4 more
doaj   +2 more sources

Health Monitoring of DC link Capacitors

Chemical Engineering Transactions, 2013
Electrolytic and metallized polypropylene film (MPPF) capacitors are among the most popular capacitors used in electronic equipments. The choice of capacitors is of major importance because one of the most frequent causes of the equipment breakdowns ...
M. Makdessi, A. Sari, P. Venet
doaj   +4 more sources

A Hybrid Method for Three-Level T-Type Inverters to Eliminate Neutral Point Voltage Ripple and Control DC-Link Capacitors’ Voltage for Separate MPPT

IEEE Access, 2021
Nowadays, photovoltaic (PV) systems based on centralized topology with a three-level T-type (3LT2) inverter are used to decrease investment costs and increase conversion efficiency.
Mohammadreza Lak, Ting-Lien Wu, Tzung-Lin Lee   +2 more
doaj   +1 more source

Safe Operating Area of DC-Link Film Capacitors

IEEE Transactions on Power Electronics, 2021
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 Wang
openaire   +1 more source

Redesign of common dc-link capacitors for dual-three phase machine drive system based on PWM sequence reorder

Energy Reports, 2023
The dual three phase machine drive system with the common dc-link capacitors has been widely used in many industrial applications due to the advantages such as small stallion volume, reduced cost and flexibility.
Wan Feng, Wenjuan Zhang, Mengdi Li, Shoudao Huang, Haixia Zhang   +4 more
doaj   +1 more source

Calculation of RMS Current Load on DC-Link Capacitors for Multiphase Machine Drives under Carrier-Phase Shift Control

Journal of Control Science and Engineering, 2023
The reliability and economy of dc-link capacitors are important concerns in multiphase drive systems. Due to the parallel connection of several converters, the dc-link capacitors are subjected to a higher RMS current, and the root mean square (RMS ...
Zhigang Zhang, Pengcheng Zhang, Yang Zhang, Wenjuan Zhang, Mengdi Li, Zichen Xiong   +5 more
doaj   +1 more source

A Nine-Level Inverter With Single DC-Link and Low-Voltage Capacitors as Stacked Voltage Sources With Capacitor Voltage Control Irrespective of Load Power Factor

IEEE Open Journal of the Industrial Electronics Society, 2022
This article proposes a multilevel inverter topology with single dc-link and series-connected capacitors as stacked voltage sources for multilevel voltage generation.
Tutan Debnath, K. Gopakumar, L. Umanand, Dariusz Zielinski, Kaushik Rajashekara   +4 more
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An Improved Down-Scale Evaluation System for Capacitors Utilized in High-Power Three-Phase Inverters under Balanced and Unbalanced Load Conditions

Energies, 2022
The DC-link capacitors in an electronic power system are the main constraint of the power density and lifespan of the power converters. Evaluating the load life of capacitors working in severely adverse circumstances plays an important role in the design
Yi-Hung Liao, Yen-Lun Lin
doaj   +1 more source

Assessment and Mitigation of Dynamic Instabilities in Single-Stage Grid-Connected Photovoltaic Systems With Reduced DC-Link Capacitance

IEEE Access, 2021
Single-stage utility-scale photovoltaic (PV) systems are usually interfaced with the host grid via a centralized voltage-source converter (VSC). Recently, and due to their reliability, the dc-link film capacitors are favored over electrolytic types in ...
Mohammad Adnan K. Magableh, Amr Radwan, Yasser Abdel-Rady I. Mohamed   +2 more
doaj   +1 more source

Optimized Space-Vector Modulation to Reduce Neutral Point Current for Extending Capacitor Lifetime in Three-Level Inverters

IEEE Access, 2020
In this paper, an optimized space-vector modulation (SVM) to reduce DC-link ripple current in three-level inverters is presented. Various types of capacitors can be utilized to balance the voltage in the DC-link of voltage source inverters.
Sang-Won An, Seok-Min Kim, Kyo-Beum Lee
doaj   +1 more source