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• 2012

  A highly efficient domain decomposition method applied to 3-D finite-element analysis of electromechanical and electric machine problems

  Yao, W., Jin, J. M. & Krein, P. T., Sep 27 2012, In: IEEE Transactions on Energy Conversion. 27, 4, p. 1078-1086 9 p., 6310043.

  Research output: Contribution to journal › Article › peer-review

  • Domain decomposition methods
  • Electric machinery
  • Finite element method
  • Parallel processing systems
  • Tensors

• Analysis of electromechanical problems using the dual-primal finite element tearing and interconnecting method

  Yao, W., Jin, J. & Krein, P. T., May 17 2012, 2012 IEEE Power and Energy Conference at Illinois, PECI 2012. 6184595. (2012 IEEE Power and Energy Conference at Illinois, PECI 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electromechanical devices
  • Magnetostatics
  • Finite element method
  • Eddy currents
  • Parallel processing systems

• A single-stage three-phase AC module for high-voltage photovoltaics

  Johnson, B., Krein, P. T., Zheng, Z. & Lentine, A., Apr 30 2012, APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition. p. 885-891 7 p. 6165923. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric potential
  • Linear regression
  • Cost reduction
  • Analytical models
  • Costs

• Comparative analysis of differential power conversion architectures and controls for solar photovoltaics

  Shenoy, P. S., Kim, K. A. & Krein, P. T., Oct 1 2012, 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics, COMPEL 2012. 6251782. (2012 IEEE 13th Workshop on Control and Modeling for Power Electronics, COMPEL 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Comparative Analysis
  • Architecture
  • Energy conversion
  • Converter
  • Energy

• Differential power processing architecture for increased energy production and reliability of photovoltaic systems

  Shenoy, P. S., Johnson, B. & Krein, P. T., Apr 30 2012, APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition. p. 1987-1994 8 p. 6166095. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Conversion efficiency
  • Energy conversion
  • Reliability analysis
  • Monitoring

• Differential power processing for efficiency and performance leaps in utility-scale photovoltaics

  Shenoy, P. S., Kim, K. A., Krein, P. T. & Chapman, P. L., Nov 26 2012, Program - 38th IEEE Photovoltaic Specialists Conference, PVSC 2012. p. 1357-1361 5 p. 6317852. (Conference Record of the IEEE Photovoltaic Specialists Conference).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Power electronics

• Efficiency and cost trade-offs for designing module integrated converter photovoltaic systems

  Kim, K. A., Lertburapa, S., Xu, C. & Krein, P. T., May 17 2012, 2012 IEEE Power and Energy Conference at Illinois, PECI 2012. 6184585. (2012 IEEE Power and Energy Conference at Illinois, PECI 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Costs
  • Microcontrollers
  • Analytical models
  • Electric power utilization
  • Sensors

• Examination of design strategies for inverter-driven induction machines

  Magill, M. P. & Krein, P. T., May 17 2012, 2012 IEEE Power and Energy Conference at Illinois, PECI 2012. 6184581. (2012 IEEE Power and Energy Conference at Illinois, PECI 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Power electronics
  • Electric traction
  • Machine design
  • Rotors
  • Geometry

• Formulation of PID control for DC-DC converters based on capacitor current: A geometric context

  Kapat, S. & Krein, P. T., Feb 20 2012, In: IEEE Transactions on Power Electronics. 27, 3, p. 1424-1432 9 p., 5982421.

  Research output: Contribution to journal › Article › peer-review

  • Three term control systems
  • DC-DC converters
  • Capacitors
  • Electric potential
  • Derivatives

• General design requirements and analysis of roadbed inductive power transfer system for dynamic electric vehicle charging

  Yilmaz, M., Buyukdegirmenci, V. T. & Krein, P. T., 2012, 2012 IEEE Transportation Electrification Conference and Expo, ITEC 2012. 6243497. (2012 IEEE Transportation Electrification Conference and Expo, ITEC 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • electric vehicle
  • Electric vehicles
  • Wire
  • Geometry
  • Pickups

• IGBT and diode loss estimation under hysteresis switching

  Bazzi, A. M., Krein, P. T., Kimball, J. W. & Kepley, K., 2012, In: IEEE Transactions on Power Electronics. 27, 3, p. 1044-1048 5 p., 5981397.

  Research output: Contribution to journal › Article › peer-review

  • Insulated gate bipolar transistors (IGBT)
  • Hysteresis
  • Diodes
  • Thermoanalysis
  • Modulation

• Implementation of an augmented boost converter for improved load transient response

  Neyens, T. J., Shenoy, P. S., Kapat, S. & Krein, P. T., May 17 2012, 2012 IEEE Power and Energy Conference at Illinois, PECI 2012. 6184613. (2012 IEEE Power and Energy Conference at Illinois, PECI 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Transient analysis
  • Topology
  • Signal analysis
  • Electric potential

• Improved time optimal control of a buck converter based on capacitor current

  Kapat, S. & Krein, P. T., Feb 20 2012, In: IEEE Transactions on Power Electronics. 27, 3, p. 1444-1454 11 p., 5970122.

  Research output: Contribution to journal › Article › peer-review

  • Capacitors
  • Recovery
  • Sliding mode control
  • Electric potential

• Markov reliability modeling for induction motor drives under field-oriented control

  Bazzi, A. M., Dominguez-Garcia, A. & Krein, P. T., Jan 16 2012, In: IEEE Transactions on Power Electronics. 27, 2, p. 534-546 13 p., 6021377.

  Research output: Contribution to journal › Article › peer-review

  • Vector control (Electric machinery)
  • Induction motors
  • Fault tolerance
  • Power electronics
  • Topology

• Minimum energy and capacitance requirements for single-phase inverters and rectifiers using a ripple port

  Krein, P. T., Balog, R. S. & Mirjafari, M., Jul 3 2012, In: IEEE Transactions on Power Electronics. 27, 11, p. 4690-4698 9 p., 6145693.

  Research output: Contribution to journal › Article › peer-review

  • Energy storage
  • Capacitance
  • Capacitors
  • Electric lamps
  • Electric potential

• Near-null response to large-signal transients in an augmented buck converter: A geometric approach

  Kapat, S., Shenoy, P. S. & Krein, P. T., Apr 19 2012, In: IEEE Transactions on Power Electronics. 27, 7, p. 3319-3329 11 p., 6111490.

  Research output: Contribution to journal › Article › peer-review

  • Switching frequency
  • Bandwidth
  • Switches
  • Recovery
  • Frequency modulation

• Photovoltaic differential power converter trade-offs as a consequence of panel variation

  Kim, K. A., Shenoy, P. S. & Krein, P. T., 2012, 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics, COMPEL 2012. 6251789

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Power Converter
  • Power converters
  • Trade-offs
  • Architecture
  • Converter

• Review of benefits and challenges of vehicle-to-grid technology

  Yilmaz, M. & Krein, P. T., Dec 17 2012, 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012. p. 3082-3089 8 p. 6342356. (2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Vehicle-to-grid
  • Plug-in electric vehicles
  • Reactive power
  • Voltage control
  • Resource allocation

• Review of charging power levels and infrastructure for plug-in electric and hybrid vehicles

  Yilmaz, M. & Krein, P. T., May 15 2012, 2012 IEEE International Electric Vehicle Conference, IEVC 2012. 6183208. (2012 IEEE International Electric Vehicle Conference, IEVC 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Plug-in electric vehicles
  • Plug-in hybrid vehicles
  • Charging (batteries)
  • Electric drives
  • Costs

• Review of integrated charging methods for plug-in electric and hybrid vehicles

  Yilmaz, M. & Krein, P. T., Oct 12 2012, 2012 IEEE International Conference on Vehicular Electronics and Safety, ICVES 2012. p. 346-351 6 p. 6294276. (2012 IEEE International Conference on Vehicular Electronics and Safety, ICVES 2012).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Plug-in electric vehicles
  • Plug-in hybrid vehicles
  • Charging (batteries)
  • Electric drives
  • Costs

• Solid-state solar simulator

  Bazzi, A. M., Klein, Z., Sweeney, M., Kroeger, K. P., Shenoy, P. S. & Krein, P. T., Jul 27 2012, In: IEEE Transactions on Industry Applications. 48, 4, p. 1195-1202 8 p., 6198887.

  Research output: Contribution to journal › Article › peer-review

  • Light emitting diodes
  • Simulators
  • Color
  • Light sources
  • Solar cells

• System-level power loss sensitivity to various control variables in vector-controlled induction motor drives

  Bazzi, A. M., Buyukdegirmenci, V. T. & Krein, P. T., Apr 30 2012, APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition. p. 1619-1624 6 p. 6166037. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Induction motors
  • Fluxes
  • Saturation magnetization
  • Vector control (Electric machinery)
  • Torque control

• The load as an energy asset in a distributed DC smartgrid architecture

  Balog, R. S., Weaver, W. W. & Krein, P. T., Mar 1 2012, In: IEEE Transactions on Smart Grid. 3, 1, p. 253-260 8 p., 6064918.

  Research output: Contribution to journal › Article › peer-review

  • System of systems
  • Controllers
  • Electric potential

• Voltage-offset resistive control for Dc-Dc converters in photovoltaic applications

  Kim, K. A., Li, R. M. & Krein, P. T., Apr 30 2012, APEC 2012 - 27th Annual IEEE Applied Power Electronics Conference and Exposition. p. 2045-2052 8 p. 6166103. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric potential
  • Open circuit voltage
  • Step response
  • Signal analysis
  • Transient analysis
• 2013

  A dual-primal finite-element tearing and interconnecting method combined with tree-cotree splitting for modeling electromechanical devices

  Yao, W., Jin, J. & Krein, P. T., Mar 1 2013, In: International Journal of Numerical Modelling: Electronic Networks, Devices and Fields. 26, 2, p. 151-163 13 p.

  Research output: Contribution to journal › Article › peer-review

  • Electromechanical devices
  • Combined Method
  • Primal-dual
  • Finite Element
  • Modeling

• A dynamic photovoltaic model incorporating capacitive and reverse-bias characteristics

  Kim, K. A., Xu, C., Jin, L. & Krein, P. T., Aug 28 2013, In: IEEE Journal of Photovoltaics. 3, 4, p. 1334-1341 8 p., 6584777.

  Research output: Contribution to journal › Article › peer-review

  • Photovoltaic cells
  • photovoltaic cells
  • dynamic characteristics
  • strings
  • cells

• A fast and flexible analytical approach for thermal modeling of a linear stator structure

  Buyukdegirmenci, V. T., Nategh, S., Magill, M. P. & Krein, P. T., Aug 22 2013, Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013. p. 793-800 8 p. 6556184. (Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Stators
  • Hot Temperature
  • Laplace equation
  • Poisson equation
  • Finite element method

• An average modeling approach for mobile refrigeration hybrid power systems with improved battery simulation

  Cao, Y. & Krein, P. T., Sep 16 2013, 2013 IEEE Transportation Electrification Conference and Expo: Components, Systems, and Power Electronics - From Technology to Business and Public Policy, ITEC 2013. 6574501. (2013 IEEE Transportation Electrification Conference and Expo: Components, Systems, and Power Electronics - From Technology to Business and Public Policy, ITEC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Refrigeration
  • Hot Temperature
  • Power and Energy
  • Cost effectiveness
  • Electric power systems

• An efficient domain decomposition method for 3-D finite element analysis of nonlinear electric machine problems

  Yao, W., Jin, J. M. & Krein, P. T., Aug 22 2013, Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013. p. 709-715 7 p. 6556171. (Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Domain decomposition methods
  • Electric machinery
  • Newton-Raphson method
  • Finite element method
  • Nonlinear analysis

• An overview of loss minimization methods in machines

  Bazzi, A. M. & Krein, P. T., 2013, Electrical Manufacturing and Coil Winding Expo 2010-2013. p. 13-18 6 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Permanent magnets
  • Physics
  • Energy conservation

• Application of the LU recombination method to the FETI-DP method for solving low-frequency multiscale electromagnetic problems

  Yao, W., Jin, J. & Krein, P. T., Oct 4 2013, In: IEEE Transactions on Magnetics. 49, 10, p. 5346-5355 10 p., 6517909.

  Research output: Contribution to journal › Article › peer-review

  • Domain decomposition methods
  • Reluctance motors
  • Eddy currents
  • Linear systems
  • Drilling

• Average and detailed modeling approaches emphasizing subsystems in a hybrid mobile refrigeration

  Cao, Y. & Krein, P. T., Aug 22 2013, Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013. p. 1132-1136 5 p. 6556301. (Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Refrigeration
  • Electric machinery
  • Electric drives
  • Electric power systems
  • Hot Temperature

• Coupled-inductor filter: A basic filter building block

  Balog, R. S. & Krein, P. T., Jan 1 2013, In: IEEE Transactions on Power Electronics. 28, 1, p. 537-546 10 p., 6145773.

  Research output: Contribution to journal › Article › peer-review

  • Networks (circuits)
  • Topology
  • Electric inductors
  • Power converters
  • Switching frequency

• Design considerations for a complete drive system

  Magill, M. P., Buyukdegirmenci, V. T. & Krein, P. T., Dec 1 2013, Electrical Manufacturing and Coil Winding Expo 2010-2013. p. 57-61 5 p. (Electrical Manufacturing and Coil Winding Expo 2010-2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric motors
  • Power electronics
  • Systems analysis

• Development of closed-form solutions for fast thermal modeling of rotating electric machinery

  Buyukdegirmenci, V. T., Magill, M. P., Nategh, S. & Krein, P. T., Aug 22 2013, Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013. p. 832-838 7 p. 6556189. (Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric machinery
  • Rotating machinery
  • Hot Temperature
  • Stators
  • Temperature distribution

• Differential power processing for DC systems

  Shenoy, P. S. & Krein, P. T., Apr 2013, In: IEEE Transactions on Power Electronics. 28, 4, p. 1795-1806 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Electric potential
  • Voltage regulators
  • Digital circuits
  • Conversion efficiency
  • Energy conversion

• Differential power processing for increased energy production and reliability of photovoltaic systems

  Shenoy, P. S., Kim, K. A., Johnson, B. B. & Krein, P. T., Nov 14 2013, In: IEEE Transactions on Power Electronics. 28, 6, p. 2968-2979 12 p.

  Research output: Contribution to journal › Article › peer-review

  • Conversion efficiency
  • Energy conversion
  • Reliability analysis
  • Monitoring

• Hot spotting and second breakdown effects on reverse I-V characteristics for mono-crystalline Si Photovoltaics

  Kim, K. A. & Krein, P. T., Dec 31 2013, 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013. p. 1007-1014 8 p. 6646813. (2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Crystalline materials
  • Hot Temperature
  • Heating
  • Degradation
  • Temperature

• Machine characterization for short-term or instantaneous torque capabilities: An approach based on transient thermal response

  Buyukdegirmenci, V. T. & Krein, P. T., Aug 22 2013, Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013. p. 801-808 8 p. 6556185. (Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Characterization (materials science)
  • Torque
  • Hot Temperature
  • Electric machinery
  • Temperature

• Peak duty electric machines: Design, operation and failure modes

  Buyukdegirmenci, V. T. & Krein, P. T., Dec 1 2013, Electrical Manufacturing and Coil Winding Expo 2010-2013. p. 140-146 7 p. (Electrical Manufacturing and Coil Winding Expo 2010-2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric machinery
  • Machine design
  • Thermal cycling
  • Failure modes
  • Hybrid vehicles

• Performance and efficiency enhancement of induction machine drives: Duality-based approach to VSI and CSI control

  Sridharan, S. & Krein, P. T., 2013, 2013 IEEE 14th Workshop on Control and Modeling for Power Electronics, COMPEL 2013. 6626459. (2013 IEEE 14th Workshop on Control and Modeling for Power Electronics, COMPEL 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Electric potential
  • Pulse width modulation
  • Harmonic distortion
  • Vector spaces
  • Induction motors

• Photovoltaic AC parameter characterization for dynamic partial shading and hot spot detection

  Kim, K. A., Krein, P. T., Seo, G. S. & Cho, B. H., Jul 1 2013, 2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013. p. 109-115 7 p. 6520194. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photovoltaic cells
  • Capacitance
  • Maximum power point trackers
  • Bias voltage
  • Power converters

• Photovoltaic hot spot analysis for cells with various reverse-bias characteristics through electrical and thermal simulation

  Kim, K. A. & Krein, P. T., 2013, 2013 IEEE 14th Workshop on Control and Modeling for Power Electronics, COMPEL 2013. 6626399

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Photovoltaic cells
  • Heating
  • Hot Temperature
  • Diodes
  • Degradation

• Pre-energized compact auxiliary circuit to buffer loads from fast transients with the goal of managing load-informed power

  Shan, Z., Krein, P. T., Tse, C. K. & Tan, S. C., Dec 9 2013, 2013 IEEE 14th Workshop on Control and Modeling for Power Electronics, COMPEL 2013. 6626433. (2013 IEEE 14th Workshop on Control and Modeling for Power Electronics, COMPEL 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Networks (circuits)

• Review of battery charger topologies, charging power levels, and infrastructure for plug-in electric and hybrid vehicles

  Yilmaz, M. & Krein, P. T., Jan 1 2013, In: IEEE Transactions on Power Electronics. 28, 5, p. 2151-2169 19 p., 6280677.

  Research output: Contribution to journal › Review article › peer-review

  • Plug-in electric vehicles
  • Plug-in hybrid vehicles
  • Charging (batteries)
  • Topology
  • Electric drives

• Review of the impact of vehicle-to-grid technologies on distribution systems and utility interfaces

  Yilmaz, M. & Krein, P. T., Jun 24 2013, In: IEEE Transactions on Power Electronics. 28, 12, p. 5673-5689 17 p., 6353961.

  Research output: Contribution to journal › Review article › peer-review

  • Vehicle-to-grid
  • Energy resources
  • Communication
  • Standardization
  • Reactive power

• System-level power loss sensitivity to various control variables in vector-controlled induction motor drives

  Bazzi, A. M., Buyukdegirmenci, V. T. & Krein, P. T., May 23 2013, In: IEEE Transactions on Industry Applications. 49, 3, p. 1367-1373 7 p., 6478795.

  Research output: Contribution to journal › Article › peer-review

  • Induction motors
  • Fluxes
  • Saturation magnetization
  • Vector control (Electric machinery)
  • Torque control

• The chimera of rare earth materials: Enhancing alternatives for machines and drives and managing the beast

  Habetler, T. G., Harley, R. G., Rhett Mayor, J., Krein, P. T., Pekarek, S. & Sudhoff, S., Aug 22 2013, Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013. p. 1509-1550 42 p. 6556341. (Proceedings of the 2013 IEEE International Electric Machines and Drives Conference, IEMDC 2013).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Winding machines
  • Rare earths
  • Machine design
  • Thermal effects
  • Physics

• Utilization of median filters in power electronics: Traction drive applications

  Bazzi, A. M. & Krein, P. T., Jul 1 2013, 2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013. p. 3055-3060 6 p. 6520735. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Median filters
  • Power electronics
  • Traction motors
  • Induction motors
  • Data acquisition
• 2014

  A 0.79 pJ/K-Gate, 83% efficient unified core and voltage regulator architecture for sub/near-threshold operation in 130 nm CMOS

  Zhang, S., Tu, J. S., Shanbhag, N. R. & Krein, P. T., Nov 1 2014, In: IEEE Journal of Solid-State Circuits. 49, 11, p. 2644-2657 14 p., 6901296.

  Research output: Contribution to journal › Article › peer-review

  • Voltage regulators
  • Capacitors
  • Energy efficiency
  • Electron energy levels
  • FIR filters