Now showing items 1-20 of 46

    • 2012 CPES Annual Report 

      Virginia Tech. Center for Power Electronics Systems (Virginia Tech. Center for Power Electronics Systems, 2012)
      The Center for Power Electronics Systems at Virginia Tech is a research center dedicated to improving electrical power processing and distribution that impact systems of all sizes – from battery – operated electronics to ...
    • 2013 CPES Annual Report 

      Virginia Tech. Center for Power Electronics Systems; Uncork-it, Inc. (Virginia Tech. Center for Power Electronics Systems, 2013)
      The CPES industrial consortium is designed to cultivate connectivity among researchers in academia and industry, as well as create synergy within the network of industry members. The CPES industrial consortium offers: The ...
    • 2014 CPES Annual Report 

      Virginia Tech. Center for Power Electronics Systems; Uncork-it, Inc. (Virginia Tech. Center for Power Electronics Systems, 2014)
      Over the past two decades, CPES has secured research funding from major industries, such as GE, Rolls-Royce, Boeing, Alstom, ABB, Toyota, Nissan, Raytheon, and MKS, as well as from government agencies including the NSF, ...
    • 2015 CPES Annual Report 

      Virginia Tech. Center for Power Electronics Systems; Uncork-it, Inc. (Virginia Tech. Center for Power Electronics Systems, 2015)
      In its efforts to develop power processing systems to take electricity to the next step, CPES has developed research expertise encompassing five technology areas: (1) power conversion technologies and architectures; (2) ...
    • 2016 CPES Annual Report 

      Virginia Tech. Center for Power Electronics Systems; Uncork-it, Inc. (Virginia Tech. Center for Power Electronics Systems, 2016)
      In its effort to develop power processing systems to take electricity to the next step, CPES has cultivated research expertise encompassing five technology areas: (1) power conversion technologies and architectures; (2) ...
    • 2017 CPES Annual Report 

      Virginia Tech. Center for Power Electronics Systems; Uncork-it, Inc. (Virginia Tech. Center for Power Electronics Systems, 2017)
      In its effort to develop power processing systems to take electricity to the next step, CPES has cultivated research expertise encompassing five technology areas: (1) power conversion technologies and architectures; (2) ...
    • 2018 CPES Annual Report 

      Unknown author (Virginia Tech, 2018)
      In its effort to develop power processing systems to take electricity to the next step, CPES has cultivated research expertise encompassing five technology areas: (1) power conversion technologies and architectures; (2) ...
    • A diffusion-viscous analysis and experimental verification of defect formation in sintered silver bond-line 

      Xiao, Kewei; Ngo, Khai D. T.; Lu, Guo-Quan (Cambridge University Press, 2014-04-01)
      The low-temperature joining technique (LTJT) by silver sintering is being implemented by major manufacturers of power electronic devices and modules for bonding power semiconductor chips. A common die-attach material used ...
    • Anti-islanding detection for three-phase distributed generation 

      Electrical and Computer Engineering; Center for Power Electronics Systems (CPES); Virginia Tech Intellectual Properties, Inc.; Dong, Dong; Boroyevich, Dushan; Mattavelli, Paolo (United States Patent and Trademark Office, 2017-04-25)
      Wobbling the operating frequency of a phase-locked loop (PLL), preferably by adding a periodic variation is feedback gain or delay in reference signal phase allows the avoidance of any non-detection zone that might occur ...
    • Avoiding internal switching loss in soft switching cascode structure device 

      Electrical and Computer Engineering; Center for Power Electronics Systems (CPES); Virginia Tech Intellectual Properties, Inc.; Li, Qiang; Lee, Fred C.; Huang, Xiucheng; Du, Weijing (United States Patent and Trademark Office, 2017-08-15)
      In a cascode switching device, avalanche breakdown of a control transistor and loss of soft switching or zero voltage switching in a high voltage normally-on depletion mode transistor having a negative switching threshold ...
    • Center Program Snapshot (April 2009) 

      Virginia Tech. Center for Power Electronics Systems (Virginia Tech. Center for Power Electronics Systems, 2009-04)
      With the widespread use of power electronics technology, the United States would be able to cut electrical energy consumption by 33 percent. The energy savings, by today’s measure, is equivalent to the total output of 840 ...
    • Colossal tunability in high frequency magnetoelectric voltage tunable inductors 

      Yan, Yongke; Geng, Liwei D.; Tan, Yaohua; Ma, Jianhua; Zhang, Lujie; Sanghadasa, Mohan; Ngo, Khai; Ghosh, Avik W.; Wang, Yu U.; Priya, Shashank (2018-11-27)
      The electrical modulation of magnetization through the magnetoelectric effect provides a great opportunity for developing a new generation of tunable electrical components. Magnetoelectric voltage tunable inductors (VTIs) ...
    • Correlation between tunability and anisotropy in magnetoelectric voltage tunable inductor (VTI) 

      Yan, Yongke; Geng, Liwei D.; Zhang, Lujie; Gao, Xiangyu; Gollapudi, Sreenivasulu; Song, Hyun-Cheol; Dong, Shuxiang; Sanghadasa, Mohan; Khai Ngo; Wang, Yu U.; Priya, Shashank (Springer Nature, 2017-11-22)
      Electric field modulation of magnetic properties via magnetoelectric coupling in composite materials is of fundamental and technological importance for realizing tunable energy efficient electronics. Here we provide ...
    • CPES : 10-Year Progress Report 

      Virginia Tech. Center for Power Electronics Systems; Uncork-It, Inc. (Virginia Tech. Center for Power Electronics Systems, 2010-04)
      A major strength of CPES is its ability to use a wealth of existing resources and industrial collaboration. Virginia Tech, the University of Wisconsin-Madison (UW), and Rensselaer Polytechnic Institute (RPI) are the nation’s ...
    • CPES : Mini-Consortium Brochure 

      Virginia Tech. Center for Power Electronics Systems (Virginia Tech. Center for Power Electronics Systems, 2011-04)
      The CPES mini-consortium model provides a unique mechanism for all participants in power electronics – including industry competitors – to pool efforts to address their common challenges and develop pre-competitive Advances. ...
    • CPES Annual Report 2019 

      Unknown author (Virginia Tech. Center for Power Electronics Systems, 2019)
      In its effort to develop power processing systems to take electricity to the next step, CPES has cultivated research expertise encompassing five technology areas: (1) power conversion technologies and architectures; (2) ...
    • CPES Annual Report 2020 

      Unknown author (Virginia Tech, 2020)
      This CPES Annual Report provides a quick insight to the Center's research efforts in 2020.
    • CPES Center Brochure (April 2011) 

      Virginia Tech. Center for Power Electronics Systems; Uncork-It, Inc. (Virginia Tech. Center for Power Electronics Systems, 2011-04)
      The Center for Power Electronics Systems is a $4 million/year research center dedicated to improving electrical power processing and dis­tribution that impact systems of all sizes –from battery-operated electronics to ...
    • Energy storage for power factor correction in battery charger for electric-powered vehicles 

      Electrical and Computer Engineering; Center for Power Electronics Systems (CPES); Virginia Tech Intellectual Properties, Inc.; Wang, Hui; Ngo, Khai Doan (United States Patent and Trademark Office, 2018-03-13)
      Switches of a switching circuit used to control operation of an electric motor such as in an electrically powered vehicle connect respective windings of the electric motor as a single phase inductor during battery charging. ...
    • External ramp autotuning for current mode control of switching converter 

      Electrical and Computer Engineering; Center for Power Electronics Systems (CPES); Virginia Tech Intellectual Properties, Inc.; Liu, Pei-Hsin; Lee, Fred C.; Mattavelli, Paolo; Yan, Yingyi (United States Patent and Trademark Office, 2017-06-13)
      Peak current, valley current or average current mode controlled power converters in either digital or analog implementations obtain a stabilized feedback loop and allow high system bandwidth design by use of an external ...