Results 11 to 20 of about 1,485 (260)
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
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A three‐stage switching MMC topology for capacitor voltage ripple reduction in HVDC applications
IET Generation, Transmission & Distribution, 2023 Modular multi‐level converters (MMCs) are a mainstay in many HVDC transmission projects worldwide. Half‐bridge MMC (HB‐MMC) is mostly used in the current project. The large capacitor of sub modules (SMs) is often required in MMC to ensure the low voltage
Qiang Fan +4 more
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IET Power Electronics, 2023 In this paper, a modified submodule (MSM) method is proposed to reduce capacitor voltage fluctuation by integrating a bidirectional buck‐boost type active power decoupling (APD) circuit into each SM for the low‐frequency operation of a converter system ...
Van‐Thang Nguyen +4 more
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Micromachines, 2022 Based on the brushless DC motor system with DC-link small capacitance powered by a single-phase AC power source, a boosting DC-link voltage strategy to reduce the commutation torque ripple of brushless DC motors is proposed in this paper.
Xinmin Li +4 more
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Pareto Frontier of the Arm Energy Ripple and the Conduction Losses of a Modular Multilevel Converter
Energies, 2021 Modular multilevel converters can achieve high power quality and voltage ratings, becoming a good alternative for high-voltage direct-current applications. However, the circulating current and capacitor voltage ripple remain significant drawbacks, mainly
Mario Lopez +3 more
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IET Power Electronics, 2022 The modular multilevel photovoltaic (PV) converter can achieve independent power control and help to increase the efficiency of the system. However, the output power among PV modules is unbalanced, which will result in the power loss of system if not ...
Ping Liu +4 more
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Flicker-Free Resonant LED Driver With High Power Factor and Passive Current Balancing
IEEE Access, 2021 A flicker-free resonant LED driver with high power factor (PF) and passive current balancing is proposed and analysed in this paper. The proposed LED driver are composed a buck power factor correction (PFC) unit and a resonant dc-dc unit by sharing an ...
Tiancheng Liu +5 more
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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
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IEEE Access, 2021 This paper proposes a reduction method for DC-link ripple current and common-mode voltage (CMV) in a hybrid active neutral-point-clamped (ANPC) inverter. A Si and SiC hybrid ANPC inverter has been developed recently to overcome the extremely high cost of
Sang-Won An, Seok-Min Kim, Kyo-Beum Lee
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Symmetry, 2022 DC–DC power electronics converters are widely used in many applications, such as renewable energy systems. The multistage-stacked boost architecture (MSBA) converter is a large voltage gain converter whose PWM scheme may reduce a percentage of the output voltage ripple, taking advantage of the symmetry of the voltage signals in capacitors (they are ...
Avelina Alejo-Reyes +3 more
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