Results 21 to 30 of about 967,927 (282)
Dual Harmonic Injection for Reducing the Submodule Capacitor Voltage Ripples of Hybrid MMC [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021 Reducing the capacitor voltage ripples of the half-bridge sub-modules (HBSM) and full-bridge sub-modules (FBSM) in a hybrid modular multilevel converter (MMC) is expected to reduce the capacitance, volume and costs. To address this issue, this paper proposes a dual harmonic injection method which injects the second harmonic circulating current and ...
Jianzhong Xu +6 more
openaire +2 more sources
Frontiers in Electronics, 2023 The charging modules of Electric vehicles (EVs) always run in a complex and variable state. As the weakness in the reliable operation of charging modules, the accurate lifetime prediction of aluminum electrolytic capacitors (Al-caps) is important for the
Hongpeng Liu +6 more
doaj +1 more source
Electronics Letters, 2022 A novel active power decoupling converter (APDC) applied in power factor correction (PFC) converter is proposed, which overcomes the problem that the DC‐link voltage ripple of small capacitor PFC converters depend heavily on the consistency of capacitors.
Chao Zhang
doaj +1 more source
Evolution of Polymer Tantalum Capacitors
Applied Sciences, 2021 The major advantage of Polymer Tantalum capacitors over other types of tantalum capacitors is their low equivalent series resistance (ESR), providing a higher capacitance stability with frequency and ripple current capability.
Yuri Freeman, Philip Lessner
doaj +1 more source
IEEE Transactions on Power Delivery, 2023 Submodule (SM) capacitor voltage ripples in modular multilevel converters (MMCs) can be suppressed by harmonic injection strategy, which can reduce the volume and cost of MMCs. The existing methods using the dual harmonic injection strategy for hybrid MMCs only consider steady-state conditions.
Jianzhong Xu +4 more
openaire +1 more source
Optimization Methods to Reduce Capacitor Stress in Modular Multilevel Converters
IEEE Access, 2020 Modular multilevel converters consist of many capacitor half-bridge or full-bridge converter cells. Stresses on the capacitors result from peak capacitor voltage, capacitor voltage ripple and current ripple.
Nikola Petranovic +3 more
doaj +1 more source
Capacitor Voltage Ripple and Harmonics Analysis in MMC
南方能源建设, 2023 [Introduction] The rapid development of VSC-HVDC provides practical support for MMC (Modular Multi-Level Converter) topology. Takes a half bridge MMC converter as an example, the relationship between steady-state capacitor voltage fluctuation, harmonic interaction, and bridge arm switching function of MMC is studied in order to provide theoretical ...
Kaikai ZOU +4 more
openaire +1 more source
Capacitor voltage ripple control based on decoupled power analysis in MMC
2017 11th IEEE International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG), 2017 Modular multilevel converters generate high voltage ripple in the floating capacitors which increases the harmonic content of arm voltages and currents and consequently the losses and can degrade the control performance. In order to reduce this voltage ripple, a large capacitance is usually employed, but the size and cost of the submodules and the ...
Arredondo, Victor +2 more
openaire +3 more sources
Quadratic boost converter with low-output-voltage ripple
, 2020 his study proposes a non-isolated quadratic boost converter (QBC) that features a low-output-voltage ripple with respect to traditional QBCs. This advantage is in contrast with other topologies that require a higher amount of stored energy by capacitors ...
Mayo-Maldonado, Jonathan C. +11 more
core +1 more source
IMPACT OF RIPPLE CURRENT ON X7R MULTILAYER CERAMIC CAPACITORS WITH BASE METAL ELECTRODES
, 2022 The trend towards miniaturization along with the availability of multilayer ceramic capacitors (MLCCs) in a wide range of voltage ratings and capacitances, makes MLCCs a viable option to be used in applications that were previously reserved for ...
Kommula, Satwik Reddy
core +1 more source