All Stories

  1. Digital Adaptive On-Time and Transient-Optimized Ripple Controlled Buck Converter

    Article • IEEE Access, January 2023, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  2. Digital Implementation of Harmonic and Unbalanced Load Compensation for Voltage Source Inverter to Operate in Grid Forming Microgrid

    Article • Electronics, March 2022, MDPI AG

    Professor Le-Ren Chang-Chien

  3. Phase sequence interchange scheme for suppressing transient cross regulation on the compensator controlled and non‐compensator controlled single‐inductor dual‐output buck converter

    Article • IET Circuits Devices & Systems, April 2021, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  4. Area Efficient High-Performance Digitally Controlled Power Management Unit

    Article • IEEE Transactions on Industrial Electronics, March 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  5. Construction of a Frequency Compliant Unit Commitment Framework Using an Ensemble Learning Technique

    Article • Energies, January 2021, MDPI AG

    Professor Le-Ren Chang-Chien

  6. A Supervised Learning Scheme for Evaluating Frequency Nadir and Fast Response Reserve in Ancillary Service Market

    Article • IEEE Access, January 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  7. Auto‐tuning charge balance control for improving transient response on buck converter

    Article • International Journal of Circuit Theory and Applications, February 2020, Wiley

    Chih Wei Liu, Professor Le-Ren Chang-Chien

  8. Assessment of Cycling Costs of Combined Cycle Units for Frequency Regulation

    Article • IET Generation Transmission & Distribution, May 2018, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  9. Charge Balance Control for Improving the Load Transient Response on Dynamic Voltage Scaling(DVS) Buck Converter

    Article • May 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  10. Practical Considerations to Calibrate Generator Model Parameters Using Phasor Measurements

    Article • IEEE Transactions on Smart Grid, September 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  11. adaptive voltage positioning

    Article • IET Power Electronics, October 2016, the Institution of Engineering and Technology (the IET)

    Chih Wei Liu, Professor Le-Ren Chang-Chien, Professor Le-Ren Chang-Chien

  12. An automatic voltage compensation technique for three-phase stand-alone inverter to serve unbalanced or nonlinear load

    Article • November 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  13. Digitally controlled low cross-regulation single-inductor dual-output (SIDO) buck converter

    Article • May 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  14. High-efficiency high-current drive power converter IC for wearable medical devices

    Article • IEICE Electronics Express, January 2015, Institute of Electronics, Information and Communications Engineers (IEICE)

    Professor Le-Ren Chang-Chien

  15. Autonomous tuning method for realizing optimal adaptive voltage positioning scheme

    Article • June 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  16. Modeling of Wind Farm Participation in AGC

    Article • IEEE Transactions on Power Systems, May 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  17. Synergistic Control Between Hydrogen Storage System and Offshore Wind Farm for Grid Operation

    Article • IEEE Transactions on Sustainable Energy, January 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  18. Digitally Controlled Low-Dropout Regulator with Fast-Transient and Autotuning Algorithms

    Article • IEEE Transactions on Power Electronics, September 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  19. Demand response plan considering available spinning reserve for system frequency restoration

    Article • October 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  20. Incorporating Demand Response With Spinning Reserve to Realize an Adaptive Frequency Restoration Plan for System Contingencies

    Article • IEEE Transactions on Smart Grid, September 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  21. Full quiescent current enhancement technique for improving transient response on the output-capacitorless Low-Dropout regulator

    Article • May 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  22. Design of the output-capacitorless low-dropout regulator for nano-second transient response

    Article • IET Power Electronics, January 2012, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  23. Fast transient voltage-mode buck regulator applying ramp signal with a variable DC-offset scheme

    Article • IET Power Electronics, January 2012, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  24. Adaptive regulating reserve scheduling for the isolated power system

    Article • European Transactions on Electrical Power, September 2011, Wiley

    Professor Le-Ren Chang-Chien

  25. Enhancing Frequency Response Control by DFIGs in the High Wind Penetrated Power Systems

    Article • IEEE Transactions on Power Systems, May 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  26. Novel digitally controlled low-drop-out voltage regulator

    Article • IEICE Electronics Express, January 2011, Institute of Electronics, Information and Communications Engineers (IEICE)

    Professor Le-Ren Chang-Chien

  27. Online estimation of system parameters for artificial intelligence applications to load frequency control

    Article • IET Generation Transmission & Distribution, January 2011, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  28. Transient Response Enhancement on the Output-Capacitorless Low-Dropout Regulator Using the Multipath Nested Miller Compensation with a Transient Quiescent Current Booster

    Article • IEICE Transactions on Electronics, January 2011, Institute of Electronics, Information and Communications Engineers (IEICE)

    Professor Le-Ren Chang-Chien

  29. Redesign of frequency controls for CPS evaluations in an isolated power system

    Article • July 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  30. Use of wind turbine emulator for the WECS development

    Article • June 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  31. Oscillation-test technique for Buck voltage regulator

    Article • February 2010, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  32. Strategies for Operating Wind Power in a Similar Manner of Conventional Power Plant

    Article • IEEE Transactions on Energy Conversion, December 2009, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  33. Implementation of the programmable low power DC-DC voltage converter by FPGA

    Article • June 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  34. Inductor-free low power step-down dc-dc switching voltage converter

    Article • June 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  35. Dynamic Reserve Allocation for System Contingency by DFIG Wind Farms

    Article • IEEE Transactions on Power Systems, May 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  36. Formulating customer's power deficiency for GENCOs to perform third-party supply

    Article • Electric Power Systems Research, February 2008, Elsevier

    Professor Le-Ren Chang-Chien

  37. The Online Estimate of System Parameters For Adaptive Tuning on Automatic Generation Control

    Article • November 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  38. An Online Approach to Allocate Operating Reserve for an Isolated Power System

    Article • IEEE Transactions on Power Systems, August 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  39. A Real-Time Contingency Reserve Scheduling for an Isolated Power System

    Article • IEEE Transactions on Reliability, March 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  40. A Remote Supervisory Control for Motor Driving System Using Windows Mobile-based Pocket PC

    Article • May 2006, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  41. Evaluating a single area's ACE dynamics for operating reserve service

    Article • January 2006, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  42. Active Filter Based On-Chip Step-Down DC-DC Switching Voltage Regulator

    Article • November 2005, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  43. Evaluating customer's regulation-control error with frequency-bias setting for dynamic regulation service

    Article • IEE Proceedings - Generation Transmission and Distribution, January 2005, the Institution of Engineering and Technology (the IET)

    Professor Le-Ren Chang-Chien

  44. Estimation of β for adaptive frequency bias setting in load frequency control

    Article • IEEE Transactions on Power Systems, May 2003, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien

  45. Field tests and refinements of an ACE model

    Article • IEEE Transactions on Power Systems, May 2003, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Le-Ren Chang-Chien