Jian L.,CAS Shenzhen Institutes of Advanced Technology |
Jian L.,Chinese University of Hong Kong |
Shi Y.,CAS Shenzhen Institutes of Advanced Technology |
Liu C.,CAS Shenzhen Institutes of Advanced Technology |
And 4 more authors.
IEEE Transactions on Magnetics | Year: 2013
This paper proposes a novel dual-permanent-magnet-excited (DPME) machine, in which two sets of permanent magnets (PMs) are employed, one on stator and the other on rotor. Bi-directional field modulation effect (BFME) is artfully engaged to guarantee the effective coupling between the magnetic field excited by the armature windings and those excited by the two sets of PMs. Machine configuration and its operating fundaments are elaborated. Finite element analysis demonstrates that the proposed DPME machine can offer much higher torque capability than its existing counterparts, which allows it a strong competitor for low-speed large-torque applications. © 1965-2012 IEEE.
Iordanskii A.L.,RAS Semenov Institute of Chemical Physics |
Chvalun S.N.,Russian Academy of Sciences |
Shcherbina M.A.,RAS Research Center Kurchatov Institute |
Karpova S.G.,RAS Semenov Institute of Chemical Physics |
And 7 more authors.
Journal of the Balkan Tribological Association | Year: 2013
The specific features of novel blends on the basis of copolymers 3-hydroxybutyrate with hydroxyvalerate (95:5 mol %) (PHBV) and segmented polyetherurethane (SPEU) have been investigated. The samples with different content (100/0, 60/40, 40/60, 50/50, and 0/100 wt.%) are explored by structural (WAXS, FTIR), thermophysical (DSC) and dynamic (probe ESR nanoananlysis, HD isotopic exchange) methods at about physiological (40°C) and elevated (70°C) temperatures after treatment by water or heavy water. It was shown that for the first 5 h during water exposition at 40°C the individual polymers (PHB and SPEU) and the blends kept structural stability that was confirmed by ESR time correlation data for the probe TEMPO and stable crystallinity (WAXS, DSC). Dependence of HD exchange rate on the blend content has minimum at PHB/SPEU ratio 60/40. At 70°C the watertemperature effect leads to enhanced molecular mobility of TEMPO in all systems besides the individual PHB. In accordance with DSC data in this case the crystallinity and melting points of PHBV are decreased. The description of PHBVSPEU system using a combination of structural and dynamic features gives a more complete assessment of its structural evolution at relatively short-term times, which precede its hydrolytic decomposition.
Zhu P.-L.,Ningbo Tianan Group Co.
Gaoya Dianqi/High Voltage Apparatus | Year: 2010
This paper introduces the working principle and technical characteristic of secondary distribution switchgear with air insulating medium, concludes that the performance of this series switchgear have greater advantages, which covering almost all areas of secondary distribution functional requirements. The practicability and usability of user-oriented design concept has also been confirmed.
Zhu P.-L.,Ningbo Tianan Group Co. |
Lin F.-M.,Ningbo Tianan Group Co. |
Chen X.-C.,Ningbo Tianan Group Co. |
Zhang Q.-W.,Ningbo Tianan Group Co. |
Chen R.,Ningbo Tianan Group Co.
Gaoya Dianqi/High Voltage Apparatus | Year: 2013
The installation convenience and reliability of existing plug-in type solid insulation busbar connector are analyzed and researched and the defects are pointed. A scheme for new type plug-in solid insulation busbar connector is suggested. Some design factors on solid insulation medium, interface pressure and electric field optimization etc for solid insulation busbar are presented in order to resolve the above defects and to get satisfied result.