@article{MTMT:3126420,
	title = {Improving the energy efficiency of induction cooking 2},
	url = {https://m2.mtmt.hu/api/publication/3126420},
	author = {Koller, László and Novák, Balázs},
	doi = {10.1007/s00202-016-0405-2},
	journal-iso = {ELECTR ENG},
	journal = {ELECTRICAL ENGINEERING},
	volume = {99},
	unique-id = {3126420},
	issn = {0948-7921},
	year = {2017},
	eissn = {1432-0487},
	pages = {171-178}
}

@{MTMT:2686232,
	title = {Current Distribution and Losses of Grouped Underground Cables},
	url = {https://m2.mtmt.hu/api/publication/2686232},
	author = {Novák, Balázs and Koller, László},
	booktitle = {2012 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION (T&D)},
	unique-id = {2686232},
	abstract = {To fulfill installation requirements, sometimes, two or more 
		cables have to be connected in parallel in a threephase power 
		distribution system. The division of the current and power among 
		the adjacent cables is governed by several factors, such as 
		position, phase order, and the grounding method of the metal 
		screen. This study demonstrates this effect and compares three 
		solution methods of grouped single-core underground cables with
		their screens bonded at both the ends. These three methods are: 
		an analytical one provided by international standards and two 2D 
		finite element approaches. One of the FE methods takes the wists 
		of the wire screens into account.},
	year = {2012}
}

@inproceedings{MTMT:2686231,
	title = {Steady-state Heating of Gas Insulated Busbars},
	url = {https://m2.mtmt.hu/api/publication/2686231},
	author = {Novák, Balázs and Koller, László},
	booktitle = {2012 IEEE PES TRANSMISSION AND DISTRIBUTION CONFERENCE AND EXPOSITION (T&D)},
	unique-id = {2686231},
	abstract = {The alternating current flowing in the busbars of gas insulated 
		switchgears (GIS) or substations generates Joule-heat both in 
		the busbars and – due to eddy currents – in the metal enclosure. 
		Besides heat conduction, the steady-state temperature of the 
		conducting parts highly depends on the heat transfer between 
		them and the encompassing gas insulation. The flow of the gas 
		inside and outside the equipment that is, natural convection 
		together with radiation determines the transferred heat. Such 
		conjugate heat transfer problems can be treated numerically by 
		finite element simulations. This paper compares the results of 
		uni- and bidirectional coupling of electromagnetic and flow 
		field simulations of a high voltage, gas insulated, three-phase
		busbar. It also discusses the influence of radiation on the
		results.},
	year = {2012},
	pages = {1-7}
}

@inproceedings{MTMT:2662561,
	title = {Influence of Phase Order on Losses and Outer Magnetic Field of Grouped Underground Cables},
	url = {https://m2.mtmt.hu/api/publication/2662561},
	author = {Novák, Balázs and Koller, László},
	booktitle = {2011 IEEE PES Power Systems Conference & Exposition},
	doi = {10.1109/PSCE.2011.5772459},
	unique-id = {2662561},
	abstract = {To fulfill installation requirements, sometimes, two
		or more cables have to be connected in parallel in a three-phase
		power distribution system. The division of the current among the
		adjacent cables is governed by several factors, such as position,
		phase order, and the grounding method of the metal screen.
		Dissimilar current distributions result in dissimilar power and
		magnetic-field distributions. Consequently, a modified phase
		order can alter the total losses and the magnetic induction above
		the ground. This study demonstrates this effect by finite element
		simulations of grouped single-core underground cables buried in
		flat formation, and with screens bonded and grounded at both
		the ends.},
	year = {2011},
	pages = {1-6}
}

@article{MTMT:2653710,
	title = {Energiaátviteli Kábelek Huzal-koszorú Árnyékolásának Végeselemes Modellezése},
	url = {https://m2.mtmt.hu/api/publication/2653710},
	author = {Novák, Balázs and Koller, László},
	journal-iso = {ELEKTROTECHNIKA},
	journal = {ELEKTROTECHNIKA},
	volume = {104},
	unique-id = {2653710},
	issn = {0367-0708},
	abstract = {A cikk huzalkoszorú árnyékolású, egyerű kábelekből álló háromfázisú, többrendszerű kábelvonalak
		árameloszlásának és veszteségeinek számításával foglalkozik. A vizsgált huzalkoszorú árnyékolás mindkét
		végén rövidre zárt és földelt. A nemzetközi szabvány analitikus számítási módszerét hasonlítja össze
		végeselemes szimulációk eredményeivel. Az összehasonlítás két eltérő 2D végeselemes modell
		eredményeire épül: az egyik a huzalkoszorút párhuzamos vezetőkkel modellezi, míg a másik az árnyékolóhuzalok
		sodrását is figyelembe veszi.},
	year = {2011},
	pages = {5-8}
}

@article{MTMT:2385887,
	title = {Current distribution and losses of grouped underground cables},
	url = {https://m2.mtmt.hu/api/publication/2385887},
	author = {Novák, Balázs and Koller, László},
	doi = {10.1109/TPWRD.2011.2104980},
	journal-iso = {IEEE T POWER DELIVER},
	journal = {IEEE TRANSACTIONS ON POWER DELIVERY},
	volume = {26},
	unique-id = {2385887},
	issn = {0885-8977},
	year = {2011},
	eissn = {1937-4208},
	pages = {1514-1521}
}

@inproceedings{MTMT:2385866,
	title = {Influence of phase order on losses and outer magnetic field of grouped underground cables},
	url = {https://m2.mtmt.hu/api/publication/2385866},
	author = {Balázs, Novák and Koller, László},
	booktitle = {Power Systems Conference and Exposition},
	unique-id = {2385866},
	year = {2011},
	pages = {210-215}
}

@inproceedings{MTMT:2653973,
	title = {Heating of Cables Due to Fault Currents},
	url = {https://m2.mtmt.hu/api/publication/2653973},
	author = {Novák, Balázs and Tamus, Zoltán Ádám and Koller, László},
	booktitle = {Conference Record of the 2010 IEEE International Symposium on Electrical Insulation (ISEI 2010)},
	doi = {10.1109/ELINSL.2010.5549812},
	unique-id = {2653973},
	abstract = {The metal screening of new type of medium and high voltage single-core underground cables is comprised of helically applied copper wires embedded in a semiconductive layer. The distribution of current and power among the thin wires is non-uniform in a three-phase system, what can lead to their non-uniform heating, especially during fault conditions. The paper investigates this problem with 2D finite element models. The simulations are based on the coupling of the electromagnetic and thermal fields.},
	year = {2010},
	pages = {1-5},
	orcid-numbers = {Tamus, Zoltán Ádám/0000-0002-0092-7565}
}

@inproceedings{MTMT:2653651,
	title = {Loss reduction in cable sheathing},
	url = {https://m2.mtmt.hu/api/publication/2653651},
	author = {Novák, Balázs and Koller, László and Berta, István},
	booktitle = {International Conference on Renewable Energies and Power Quality (ICREPQ'10)},
	unique-id = {2653651},
	abstract = {In order to reduce electric potential difference between the sheathings of single core three-phase cables, the sheathing is grounded and bonded at one or both ends of the cables. If the cable is long, double bonding has to be carried out which leads to circulating currents and increased power loss. Based on finite element (FE) calculations, this paper shows, that raising the sheath’s resistance, by decreasing its cross section and increasing its resistivity, can significantly reduce this loss. The magnetic field close to the ground surface and the behaviour of the cable during fault conditions are also investigated.},
	year = {2010},
	pages = {1-5}
}

@article{MTMT:2652559,
	title = {Újfajta edény indukciós főzéshez},
	url = {https://m2.mtmt.hu/api/publication/2652559},
	author = {Koller, László and Novák, Balázs},
	journal-iso = {ELEKTROTECHNIKA},
	journal = {ELEKTROTECHNIKA},
	volume = {103},
	unique-id = {2652559},
	issn = {0367-0708},
	abstract = {A kezdeti nehézségek után, az árak csökkenésének köszönhetően, az utóbbi években már a háztartások számára is egyre inkább elérhetővé váltak az indukciós főzőlapok. Cikkünkben bemutatjuk, hogy egy újfajta edény használatával az eddigieknél még kényelmesebb, dinamikusabb és energiatakarékosabb főzés valósítható meg.},
	year = {2010},
	pages = {5-8}
}