Results 31 to 40 of about 52,716 (352)
Energy Reports, 2022 The unbalance of neutral-point potential (NPP) is an important problem in three-level converter. This paper proposes a neutral-point potential balancing control method with the third harmonic injected pulse width modulation (PWM) for three-level ...
Jie Tian +4 more
doaj +1 more source
Optimal Phase Swapping in Low Voltage Distribution Networks Based on Smart Meter Data and Optimization Heuristics [PDF]
, 2017 In this paper a modified version of the Harmony Search algorithm is proposed as a novel tool for phase swapping in Low Voltage Distribution Networks where the objective is to determine to which phase each load should be connected in order to reduce the ...
Bordagaray, Ana González +5 more
core +2 more sources
Energies, 2021 This paper presents a novel single-phase grid-tied neutral-point-clamped (NPC) five-level converter (SPFLC). Unlike the literature on five-level NPC topologies, the proposed one is capable of inherently balancing the voltage of the DC-link split ...
Jorge Lara +4 more
doaj +1 more source
DC link capacitor voltage balancing in three level neutral point clamped inverter [PDF]
2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL), 2012 Multilevel inverters are becoming increasingly popular for high and medium power applications. The diode clamped multilevel inverter (DCMLI) is an attractive high voltage multilevel inverter due to its robustness. The deviating voltage at the neutral point remains always a distracting feature in NPC inverter.
Saad Mekhilef +2 more
openaire +1 more source
IEEE Access, 2020 This paper proposed a grid connected solar Photovoltaic (PV) Systems with a new voltage balancing converter suitable for Neutral-Point-Clamped (NPC) Multilevel Inverter (MLI).
Amir Taghvaie +3 more
doaj +1 more source
Power Quality Enhancement in Electricity Grids with Wind Energy Using Multicell Converters and Energy Storage [PDF]
, 2019 In recent years, the wind power industry is experiencing a rapid growth and more wind farms with larger size wind turbines are being connected to the power system.
Allali, Ahmed +5 more
core +2 more sources
IEEE Access, 2020 This paper proposes a predictive control method with offset voltage injection for achieving a neutral point (NP) voltage balance of three-phase three-level neutral point clamped (NPC) inverter, without employing a weighting factor. In order to ensure the
Eun-Su Jun +2 more
doaj +1 more source
Neutral‐point voltage balancing in wind power NPC three‐level converter
Electronics Letters, 2017 Neutral‐point‐clamped (NPC) three‐level converter has been widely used in wind power generation systems. However, traditional NPC three‐level converter often suffers excessive voltage fluctuation at the neutral point of DC‐link capacitors. This problem may leads to switching devices damage and increases additional harmonics in output voltage of the ...
Peng Qian, Liangbi Li
openaire +1 more source
Band-Limited Three-Level Modulation for Balancing Capacitor Voltages in Neutral-Point-Clamped Converters [PDF]
IEEE Transactions on Power Electronics, 2020 In this article, a band-limited three-level modulation scheme is proposed for a three-phase neutral-point-clamped (NPC) converter with an aim to balance the average capacitor voltages under all operating conditions. When conventional carrier-based pulsewidth modulation is applied, the amplitude of neutral point (NP)-voltage ripple tends to increase ...
Neha Beniwal +5 more
openaire +3 more sources
Improved natural balancing with modified phase shifted PWM for single-leg five-level flying-capacitor converters [PDF]
, 2012 Flying capacitor converters (FCCs), as most multilevel converter topologies, require a balancing mechanism of the capacitor voltages. FCCs have the valuable property of natural voltage balancing when a special modulation technique is used.
Melkebeek, Jan +3 more
core +1 more source