Results 31 to 40 of about 9,922 (292)
On The Relationships Among Different Voltage Unbalance Definitions
, 2021 Growing penetrations of distributed energy resources (DERs) increase the power injection variability in distribution systems, which can result in power quality issues such as voltage unbalance.
Kshitij I Girigoudar +2 more
core +1 more source
Aero-Engine Rotor Assembly Process Optimization Based on Improved Harris Hawk Algorithm
Aerospace, 2022 Multi-stage disc rotor assembly is an important part of the aero-engine rotor manufacturing process. To solve the problem that excessive unbalance of assembly affects the vibration of the whole machine, this paper presents an optimization method for aero-
Bin Zhang +4 more
doaj +1 more source
Evaluation of voltage magnitude based unbalance metric for low voltage distribution networks
, 2022 Voltage unbalance in distribution networks (DN) is expected to grow with increasing penetration of single-phase distributed generation and single-phase loads such as electric vehicle chargers.
Dirk Van Hertem +4 more
core +1 more source
Advances in Electrical and Electronic Engineering, 2014 Development of Distributed generations (DGs) has changed the nature of power networks from passive to active. In order to specify a proper model for DG units, function and connection style of DGs to the network (direct or indirect) must be clarified.
Hassan Barati, Abdol Rasool Fatthi
doaj +1 more source
Transposition and Voltage Unbalance in High Phase Order Power Transmission Systems [PDF]
, 2014 : High phase order systems have been proposed at the early inception of power transmission engineering, but few direct applications have been made. High phase order transmission should be considered as an alternative in the case of high power density ...
core +1 more source
IEEE Access, 2022 The neutral-point clamped (NPC) inverter is widely used in energy conversion, but the unbalance of neutral-point voltage (NPV) will lead to imprecise control and the decline of power quality.
Nan Jin +4 more
doaj +1 more source
Statistical Analysis of Voltage Unbalance Emission Due to Asymmetrical Loads in Three-Phase Power Systems [PDF]
, 2022 —This paper investigates the statistical properties of the voltage unbalance factor in a three-phase system due to an asymmetrical three-phase load with uncertain parameters. The parameters of the three-phase load are treated as random variables with
D. Bellan
core +1 more source
Mathematics, 2021 In the paper, a coordinated control methodology of single-phase (1-P) end-users switching operations on the phases of an active electric distribution network (AEDN) has been proposed to obtain a minimum unbalance degree at the coupling common point (CCP)
Gheorghe Grigoraș +6 more
doaj +1 more source
Modeling Of Calculation Of Voltage Unbalance Factor Using Simulink (Matlab)
The American Journal of Engineering And Techonology, 2020 This paper presents the problem of power quality in asymmetric modes in low-voltage electrical networks. The modeling of determination of power value, voltages and currents and, accordingly, their symmetric components, using the Simulink package in the MatLab program is shown.
I.Kh. Kholiddinov +4 more
openaire +2 more sources
A new definition of voltage unbalance using supply phase shift [PDF]
, 2020 Studies on voltage unbalance have revealed its detrimental effects on the operation of three-phase induction motors (TPIM) due to the production of negative-sequence current and torque. Voltage unbalance has been defined in different ways over the years,
Adekitan, Aderibigbe Israel
core +1 more source