Yazar "Hocaoğlu, Mehmet Hakan" için listeleme
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Addendum to a power resolution for nonsinusoidal and unbalanced systems: Evaluation examples
In this paper, a power resolution presented in [1] is evaluated by considering optimum balanced capacitive compensation and harmonic producing load detection issues. The evaluation examples show that the power resolution ... -
An analysis into the effect of voltage harmonics on the maximum loading capability of transformer
Arslan, Emrah; Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan (IEEE, 2014)In this paper, some exemplary cases are presented to show the effect of voltage total harmonic distortion (THDV) and its spectrum on the harmonic loss factors (F-HL and F-HL-(STR)) of the six-pulse rectifiers accompanied ... -
An analysis on the nonactive powers for nonsinusoidal conditions
Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan (Gazi Üniv., 2011)In this paper, the nonactive part of the apparent power is decomposed into three different components. The qualitative and quantitative analyses show that reactive power component of the power decomposition gives the power ... -
A current decomposition-based method for computationally efficient implementation of power resolution meters in non-sinusoidal single-phase systems
Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan (Polska Akad Nauk, 2013)For non-sinusoidal single-phase systems, the classical apparent power has been divided into various components using different techniques. These power resolutions generally aim at to provide a tool for the accurate ... -
A current resolution for fast measurement of power resolutions in non sinusoidal single phase systems
In this paper, a new current decomposition is proposed for effective and fast measurement of the power resolutions defined by Fryze, Shepherd & Zakikhani, Sharon, Kusters & Moore and Czarnecki. The complexity analysis shows ... -
A fixed speed ınduction generator model for unbalanced power flow analysis
Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan; Köksoy, Ahmet; Öztürk, Onur; Dursun, Bahtiyar (IEEE, 2014)This paper proposes a model of the induction generator for the phase-domain power flow analysis of fixed speed wind turbine generating systems connected to balanced or unbalanced three-phase distribution systems. The ... -
Improvement of PV unit hosting capacity and voltage profile in distorted radial distribution systems via optimal sizing and placement of passive filters
Karadeniz, Alp; Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan (Springer, 2023)In this paper, firstly, optimal sizing and placement of photovoltaic-based distributed generation units (PVDGUs) and passive harmonic filters (PFs) are proposed to improve both the PVDGU hosting capacity and bus voltage ... -
Minimization of voltage harmonic distortion of synchronous generators under non-linear loading via modulated field current
Karakaya, Oktay; Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan (MDPI, 2023)The synchronous generators (SGs) supplying non-linear loads have harmonically distorted terminal voltages. Hence, these distorted terminal voltages adversely affect the performance parameters of the supplied loads such as ... -
On the validity of harmonic source detection methods and indices
In this paper, the validity of the single-point measurements methods and indices, which were proposed for harmonic source detection and sharing harmonic responsibility between utility and consumer, are investigated in a ... -
Performance analysis of three-phase five-leg transformers under DC bias using a new frequency-dependent reluctance-based model
Cantürk, Şevket; Balcı, Murat Erhan; Hocaoğlu, Mehmet Hakan; Köseoğlu, Ahmet Kerem (Inst Engineering Technology-IET, 2022)This paper presents a reluctance-based model considering the frequency-dependent loss nature of the windings for the analysis of three-phase five-leg transformers under grid voltages with direct current (DC) bias. This is ... -
A power resolution for nonsinusoidal and unbalanced systems - Part I: Literature overview and motivation
This study presents an overview on the apparent power definitions and power resolutions widely known in the literature. It is shown from the literature overview that there is a need for a power resolution, which can be ... -
A power resolution for nonsinusoidal and unbalanced systems - Part II: Theoretical background
It is seen from the study [1] that there is a need for a power resolution, which can be utilized for the direct provision of the optimum compensation capacitor's power and give some useful information on the detection of ...
