Voltage Balance and Control in a Multilevel Unified Power Flow Controlier [PDF]
IEEE Power Engineering Review, 2001 The neutral-point-clamped multilevel converter is an attractive implementation of the unified power flow controller because it facilitates back-to-back operation, high-voltage operation (without direct series connection of devices), and low distortion (without the use of multipulse transformers). A UPFC using three converters is proposed.
Soto-Sanchez, DE, Green, TC
openaire +3 more sources
IEEE Access, 2019 A novel capacitor voltage balancing scheme for modular multilevel cascade converter-double-star chopper-cells (MMCC-DSCC)-based STATCOM is proposed in this paper.
Yu Jin +8 more
doaj +1 more source
Operating Principle and Performance Optimization of a Three-Level NPC Dual-Active-Bridge DC-DC Converter [PDF]
, 2015 © 1982-2012 IEEE. Aiming to improve the performance features of conventional two-level dual-active-bridge (DAB) converters, this paper presents a three-level neutral-point-clamped (NPC) DAB dc-dc converter.
Bordonau Farrerons, José +3 more
core +2 more sources
HVDC transmission systems: Bipolar back-to-back diode clamped multilevel converter with fastoptimum-predictive control and capacitor balancing strategy [PDF]
, 2011 Voltage source multilevel power converter structures are being considered for high power high voltage applications where they have well known advantages.
Chaves, Miguel +4 more
core +1 more source
DC Voltage Balance Control Strategy for Medium Voltage Cascaded STATCOM Based on Distributed Control
Journal of Networks, 2014 DC bus capacitors of Medium Voltage Cascaded STATCOM are independent. DC side voltage balance control method is the key influencing factor of current control. The imbalance of DC bus voltage increases harmonic current and affects the safety of device. In this paper, the unbalance mechanism of DC side capacitor voltage is analyzed. Based on the unipolar
Xuehua Zhao, Liping Shi
openaire +1 more source
Voltage Stabilization in Microgrids via Quadratic Droop Control [PDF]
, 2009 We consider the problem of voltage stability and reactive power balancing in islanded small-scale electrical networks outfitted with DC/AC inverters ("microgrids").
Simpson-Porco, John W. +2 more
core +1 more source
A Modularized Discharge-Type Balancing Topology for Series-Connected Super Capacitor String
Energies, 2018 This paper proposed a modularized discharge-type topology for the voltage balance of series-connected super capacitor (SC) string. The proposed topology consists of cascaded converter modules and a boost converter.
Shaogui Fan +3 more
doaj +1 more source
Arm voltage balancing control of modular multilevel resonant converter [PDF]
CES Transactions on Electrical Machines and Systems, 2020 Modular multilevel resonant converter is an promising candidate for high voltage applications since it has advantageous features, such as high efficiency, high voltage capability and easy fault-tolerant operation. However, the inequality of arm inductance in practice will lead to imbalance between the upper and lower arm voltages, which will induce ...
Jianjia Zhang +4 more
openaire +2 more sources
Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]
, 2013 In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
A. S., Kumar, J.S., Sathiyanarayanan
core +2 more sources
Zhongguo dianli, 2023 Aiming at the problems of high switching frequency, large switching loss and large amount of computation in traditional voltage balancing strategy for modular multilevel converter (MMC), an improved capacitor voltage balancing control strategy is ...
Binqiao ZHANG +5 more
doaj +1 more source