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  • 1.
    Andersson, Bengt-Olof
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Gunnarsson, Ove
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A simple build-up method for the DC voltage scale of a source2012In: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , p. 498-499Conference paper (Refereed)
  • 2.
    Andersson, Bengt-Olof
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Gunnarsson, Ove
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Early, Murray
    Sira, Martin
    Christian, Laurie
    Streit, Jirí
    A Simple Build-Up Method for the DC Voltage Scale of Source2013In: CPEM Digest, ISSN 0589-1485, E-ISSN 2160-0171, p. 498-499Article in journal (Refereed)
  • 3. Bahmani, Amin
    et al.
    Thiringer, Torbjörn
    Kharezy, Mohammad
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Design Methodology and Optimization of a Medium Frequency Transformer for High Power DC-DC Applications2015In: Applied Power Electronics Conference APEC, 2015, , p. 8Conference paper (Other academic)
    Abstract [en]

    The high power medium frequency transformer (HPMFT) is one of the key elements of an isolated, bi-directional DC-DC converters in applications such as future all-DC offshore wind farms, traction and solid state transformers. This paper describes a design methodology taking into account the loss calculation, isolation requirements and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a design example to find the highest power density while the efficiency, isolation, thermal and leakage inductance requirements are all met.

  • 4. Bahmani, Amin
    et al.
    Thiringer, Torbjörn
    Kharezy, Mohammad
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Optimization and Experimental Validation of Medium-Frequency High Power Transformers in Solid-State Transformer Applications2016In: 2016 IEEE Applied Power Electronics Conference (APEC, 2016, , p. 8Conference paper (Other academic)
    Abstract [en]

    High power isolated DC-DC converters are likely to provide solutions for many technical challenges associated with power density, efficiency and reliability in potential applications such as offshore wind farms, inter-connection of DC grids, MVDC in data centers and in future solid state transformer applications. The high power medium frequency transformer (HPMFT) is one of the key elements of such a converter to realize the voltage adaption, isolation requirements, as well as high power density. This paper describes a design and optimization methodology taking into account the loss calculation, isolation requirements and thermal management. Incorporating this design methodology, an optimization process with a wide range of parameter variations is applied on a 50 kW, 1 / 3 kV, 5 kHz transformer to find the highest power density while the efficiency, isolation, thermal and leakage inductance requirements are all met. The optimized transformers are then manufactured and will be presented in this paper.

  • 5.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Absolute calibration of a 100 kV DC divider.1996Report (Refereed)
  • 6.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Analysis of metrological requirements for electrical measurement of HVDC station losses2012In: IEEE Transactions on Instrumentation and Measurement, Vol. 61, no 10, p. 2695-2700Article in journal (Refereed)
    Abstract [en]

    23 May 2012

  • 7.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Calibration of high resolution digital recorders for impulse measurements.1998Report (Refereed)
  • 8.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Difference amplifier for use in accurate voltage transformer calibrations.1989Report (Refereed)
  • 9.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    International comparison of measurement of 200 kV DC, Results obtained of SP.2008Report (Refereed)
  • 10.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Publishable JRP2012Report (Refereed)
  • 11.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Qualification of a reference measuring systems for impulse voltage.1992Report (Refereed)
  • 12.
    Bergman, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Elg, Alf-Peter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Hällström, J
    Dedeoglu, S
    Houtzager, E
    lucas, W
    Merev, A
    Weber, C
    Design of a wideband HVDC reference divider2012In: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , p. 207-208p. 207-208Conference paper (Refereed)
  • 13.
    Bergman, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Meisner, J
    Svensson, Stefan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Enabling DC-Side Metering in HVDC Stations2014In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 29, no 1, p. 370-377Article in journal (Refereed)
    Abstract [en]

    HVDC power transmission is now being considered not only for point-to-point interties, but also as true grids where several operators may tie into the grid, each having its own economic sphere. In this new situation, it is important that transmitted energy be distinguished from losses incurred in the converter stations, to enable a fair distribution of costs for grid operation. To this end, a metrology infrastructure is needed where high-current and high-voltage transducers must be possible to calibrate traceably, and where dc electricity meters can be calibrated and approved. A research project is currently working with these questions in a concerted European research effort, funded by the European Commission. The present publication highlights important aspects of this work.

  • 14.
    Bergman, Anders
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Wang, Feng
    Le Tuan, Ahn
    Bertling-Tjernberg, Lina
    A New Approach for Benefit Evaluation of Multiterminal VSC-HVDC Using A Proposed Mixed AC/DC Optimal Power Flow2013In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 99Article in journal (Refereed)
    Abstract [en]

    In this paper, an extended optimal power-flow (OPF) model incorporating a detailed model of a voltage-source converter-based–multiterminal high-voltage direct current system (VSC–MTDC) is proposed, hereafter referred to as the mixed ac/dc OPF (M-OPF) model. A cost-benefit analysis approach using the M-OPF model as the calculation engine is proposed to determine the preferred VSC-MTDC alternative to be installed in an existing ac transmission system. In this approach, the operational benefits of VSC–MTDC systems are evaluated against their investment costs to derive the benefit-to-cost ratios (BCR) which reflect the cost-effectiveness of the alternatives. A case study has been carried out using a modified Nordic 32-bus system. The results of the study show that VSC–MTDC systems might lead to a reduction in total operation cost, and the reduction of the total system transmission loss depends to a large extent on the VSC–MTDC configuration. The results from sensitivity analyses show that if the VSC loss could be reduced to a third of the original level, the total benefit from the system would be increased by about 70%. A suggestion for the placement and configuration of a VSC–MTDC system is made based on calculated BCRs.

  • 15.
    Bergsten, Tobias
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Disordered Fermi liquid in epitaxial graphene from quantum transport measurements2011In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 107, no 16, p. 166602-Article in journal (Refereed)
  • 16.
    Bergsten, Tobias
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    The EMRP project GraphOhm- Towards quantum resistance metrology based on graphene2014In: CPEM 2014, 2014, , p. 548 - 549Conference paper (Refereed)
  • 17.
    Bergsten, Tobias
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Eklund, Gunnar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A quantum standard for sampled electrical measurements-Main goals and first results of the EMRP project Q-WAVE2014In: 29th Conference on Precision Electromagnetic Measurements, CPEM 2014, 2014, , p. 522-523Conference paper (Refereed)
  • 18.
    Bergsten, Tobias
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Gunnarsson, Ove
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Eklund, Gunnar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A precision current source using Δ-Σ modulation.2011In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 60, no 7, p. 2341-2346Article in journal (Refereed)
  • 19.
    Bergsten, Tobias
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Eklund, Gunnar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Josephson waveform generation using multilevel Δ-Σ Modulation2012In: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , p. 172-173Conference paper (Refereed)
  • 20.
    Bergsten, Tobias
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Determining voltage dependence of the phase response in voltage dividers2012In: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , p. 282-283Conference paper (Refereed)
  • 21.
    Börjesson, Lars
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Källgren, Håkan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Pendrill, Leslie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Simulated loading of vehicle scales.1989Report (Refereed)
  • 22. Cerqueira Bastos, Miguel
    et al.
    Hammarquist, Maria
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A High-Voltage Testbed for the Evaluation of High-Voltage Dividers for Pulsed Applications.2011In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 60, no 7, p. 2462-2468Article in journal (Refereed)
    Abstract [en]

    The design, evaluation and commissioning of a high voltage reference testbed for pulsed applications to be used in the precision testing of high voltage dividers is described. The testbed is composed of a pulsed power supply, a reference divider based on compressed gas capacitor technology and an acquisition system which makes use of the fast measurement capabilities of the HP 3458 DVM. Results of the evaluation of the reference system are presented.

  • 23.
    Eklund, Gunnar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Realisering av induktansenheten.1992Report (Refereed)
  • 24.
    Eklund, Gunnar
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Bergsten, Tobias
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Determination of transition error corrections for low frequency stepwise-approximated Josephson sine waves.2011In: IEEE Transactions on Instrumentation and Measurement, ISSN 0018-9456, E-ISSN 1557-9662, Vol. 60, no 7, p. 2399-2403Article in journal (Refereed)
  • 25.
    Eklund, Gunnar
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Bergsten, Tobias
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tarasso, Valter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Rydler, Karl-Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Low frequency characterization of a planar multijunction thermal converter using a programmable Josephson voltage standard2012In: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , p. 62-63Conference paper (Refereed)
  • 26.
    Eklund, Gunnar
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Gunnarsson, Ove
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    EUROMET.EM-S18 supplementary comparison of 1 ohm and 10 kohm resistance standards2005In: Metrologia: Technical Supplement 1A (01009), Vol. 42Article in journal (Other academic)
  • 27.
    Eklund, Gunnar
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Pajander, Hannu
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    The SP Josephson array voltage standard.1995Report (Refereed)
  • 28.
    Elg, Alf-Peter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Optimization of field grading for a 1000 KV wide-band voltage divider2015In: Journal of Electrostatics, ISSN 0304-3886, E-ISSN 1873-5738, Vol. 73, no febr, p. 140-150Article in journal (Refereed)
  • 29.
    Elg, Alf-Peter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Selection and characterization of resistors for a HVDC reference divider2012In: Conference on Precision Electromagnetic Measurements, CPEM 2012, 2012, , p. 197-198Conference paper (Refereed)
  • 30.
    Gradinarsky, LP
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Johansson, J
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Climate monitoring using GPS2002In: Physics and chemistry of the earth, Vol. 27Article in journal (Other academic)
  • 31.
    Gradinarsky, LP
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Johansson, Jan et al
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    GPS site testing at Chajantor in Chile2001In: Physics and chemistry of the earth, Vol. 26, p. 421-426Article in journal (Other academic)
  • 32.
    Gunnarsson, Ove
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Calibration of PD-calibrators.1998Report (Refereed)
  • 33.
    Gunnarsson, Ove et al
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Comparison EUROMET.EM-K8 of DC voltage ratio: results2005In: IEEE Transactions on Microwave Theory and Techniques, Vol. 54, p. 575-579Article in journal (Refereed)
  • 34.
    Gunnarsson, Ove et al
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Transport behavior of commercially available 100?W standard resistorsol.2001In: IEEE transactions on instrumentation and measurement, Vol. 50, p. 242-244Article in journal (Other academic)
  • 35.
    Gunnarsson, Ove
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Nilsson, Håkan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Thorén, Ingemar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Den svenska resistansenheten, resultatet av en internationell jämförelsemätning 1990/91.1991Report (Refereed)
  • 36.
    Ivarsson, Sven
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Johansson, Bengt
    Källgren, Håkan
    Pendrill, Leslie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Calibration of submultiples of the kilogram.1989Report (Refereed)
  • 37.
    Ivarsson, Sven
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Johansson, Bengt
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Källgren, Håkan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Pendrill, Leslie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Intercomparison of measurement techniques on small masses. Euromet project A88/143.1989Report (Refereed)
  • 38.
    Jarlemark, P
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Johansson, J
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Real time GPS procesing for regional atmmospheric delay derivation2002In: Geophysical Research Letters, ISSN 0094-8276, E-ISSN 1944-8007, Vol. 29, no 16Article in journal (Other academic)
  • 39.
    Jarlemark, P
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Johansson, Jan et al
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Spatial error correlation of GPS atmospheres as determined from simulations,2001In: Physics and chemistry of the earth, Vol. 26, p. 451-456Article in journal (Other academic)
  • 40.
    Johansson, Bengt
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Källgren, Håkan
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Massa, kraft, längd och tryck.
    Pendrill, Leslie
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    11th comparison between the Swedish national kilogram and SP principal standards for one kilogram.1996Report (Refereed)
  • 41.
    Johansson, J
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Continuous GPS measurement of postglacial adjustment in Fennoscandia, 1.2002In: Journal of geophysical research, Vol. 107Article in journal (Other academic)
  • 42.
    Joons, Erik
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Uppbyggnad, idrifttagning och verifiering av ett nollfödesmätsystem för likströmsmätning 40-3500A2002Report (Refereed)
  • 43.
    Juvik, Jon Ivar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A calibration system for instrument transformers with digital output2001Report (Refereed)
  • 44.
    Juvik, Jon Ivar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    A calibration system for instrument transformers with digital output.2001Report (Refereed)
  • 45.
    Juvik, Jon Ivar
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    On-site long term comparison between instrument transformers with digital ouput and a conventional measuring system2001Conference paper (Other academic)
  • 46.
    Kharezy, Mohammad
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Reliability study of monitoring systems for power transformers in the smart grid2015Report (Refereed)
    Abstract [en]

    The project suggests appropriate methods for quality assurance of measurement processes and measuring equipment used for condition monitoring of power transformers, specifically for selection of on-line monitoring systems for: • Temperature • Partial discharge (PD) • Sound and vibration The developed methods can be developed further in subsequent projects to cover the quality of other types of measurement processes and measuring equipment as part of maintenance planning activities.

  • 47.
    Kharezy, Mohammad
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Lindgren, Mikael
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Kommunikation.
    Fiberoptic sensors for high-voltage applications1981Report (Refereed)
    Abstract [en]

    SP has experience in the field of fiberoptic communication and expertise in research in the field. Also, SP has expertise in the high-voltage field and there is currently a large interest in developing the high-voltage network in order to accommodate new small producers of electric power (wind mills, solar power, etc.) In this report we describe efforts to find areas of interest to develop fiberoptic sensors for offshore monitoring of high-voltage equipment. A large number of research papers and review articles have been collected and reviewed in order to investigate what possibilities are at hand for SP to provide support for development of new or existing fiberoptic sensor technologies.

  • 48. Lartsev, Arseniy
    et al.
    Yager, Tom
    Bergsten, Tobias
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Tzalenchuk, Alexander
    Janssen, TJBM
    Yakimova, Rositza
    Lara-Avila, Samuel
    Kubatkin, Sergey
    Tuning carrier density across Dirac point in epitaxial graphene on SiC by corona discharge”2014In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 105, no 6, p. 63106-Article in journal (Refereed)
  • 49. Li, Yi
    et al.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Larzelere, Bill
    Rickmann, Johannes
    Hauschild, Wolfgang
    Diaz, Ricardo
    Garnacho, Fernando
    McComb, Terry
    Zhang, Y
    Elg, Alf-Peter
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Past, present and future of IEC and IEEE high-voltage and high current testing standards2014Report (Refereed)
    Abstract [en]

    Recently, IEC and IEEE have published a number of revised and new standards for high-voltage and high-current testing. Significant changes and additions have been introduced to these revised and new standards. CIGRE WG D1.35 has developed a guide to give high-voltage test engineers a broader knowledge of how to apply the latest high-voltage and high-current testing standards. The guide presents a brief account of the history of these standards with the aim to allow readers to gain a better appreciation of the technical background followed by sections summarize the major changes made to the standards in their latest revisions to provide a general picture of the revisions. Finally, some discussion is given on the practical implications of these changes. Practical examples are provided to illustrate some of the new techniques and new procedures. The guide also lists areas of possible improvements to the standards for future revisions.

  • 50. Martín, Ricardo
    et al.
    Bergman, Anders
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Mätteknik, Elektricitet.
    Hällström, J
    Final report on supplementary comparison EURAMET.EM-S29: Traceability of DC high voltage reference measuring systems up to 200 kV2012In: Metrologia, ISSN 0026-1394, E-ISSN 1681-7575, Vol. 49, p. 1001-Article in journal (Refereed)
    Abstract [en]

    The purpose of the EURAMET supplementary comparison EURAMET.EM-S29 was to compare the calibration and measurement capabilities of the participating institutes. The pilot laboratory was the Laboratorio Central Oficial de Electrotecnia (LCOE, Madrid, Spain), and the other participants were the following other six EURAMET national metrology institutes: BIM (Bulgaria), MIKES (Finland), PTB (Germany), SP (Sweden), UME (Turkey) and VSL (The Netherlands), and the COOMET national institute VNIIMS (Russia). A 200 kV DC reference measuring system provided by LCOE was used as a travelling reference measuring system (TRMS). The comparison measurements were carried out between November 2007 and April 2010. According to the technical protocol, two different types of measurements had to be made: determination of the assigned scale factor of the TRMS between 1 kV and 200 kV, positive and negative polarity, and short-term stability of the measuring systems used. For each voltage level and polarity, a comparison reference value was calculated. Compatibility of each participant with the corresponding comparison reference values and between any pair of laboratories was also obtained. Results of the comparison offered a good opportunity to check the calibration and measurement capabilities of the participants in the field of high voltage DC measurement. The reported results also demonstrate the importance of taking care in order to cancel the influence of the self-heating of the TRMS. Main text. To reach the main text of this paper, click on Final Report [http://www.bipm.org/utils/common/pdf/final_reports/EM/S29/EURAMET.EM-S29.pdf] . Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/ [http://kcdb.bipm.org/] . The final report has been peer-reviewed and approved for publication by EURAMET, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).

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