Research & Publications

General Directions: Energy storage/routing/management and power conversion, high-frequency wireless power transfer (WPT) such as at 6.78 and 13.56 MHz, and emerging applications in electronic devices, mobile robots, electric vehicles, microgrids and smart grids, and more. Current major interests include

1. Design, control and implementation of high-frequency power electronic devices, especially for WPT and energy routing;

2. Coordination and management of distributed energy networks from the perspective of new hardware architectures and intelligent algorithms.

Ongoing Research:

1. Three-dimensional magnetic field shaping by modular planar or curved-surface transmitting coil arrays;

2. High-spatial-freedom and high-efficiency WPT for medical implants, drones, mobile robots, etc;

3. All-in-one multi-port multi-function energy routers or hubs, e.g. for power combining and/or routing;

4. Cloud-local joint management architecture of microgrids and smartgrids with dual redundancy;

5. User behavior-based large-scale charging coordination (e.g. EV fleet)  and demand-side management.

Research Summary: [PPT]

Current Students:  6 PhD Students, 2 Master students (Sep. 2024)

Alumni: 13 PhD Students (5 tenured/tenure-track faculty members) and 18 Master students (the first batch of graduate students enrolled in Sep. 2010)

Journals Publications: supervised students are indicated below with an asterisk (*)

1. H. Qin*, C. Liu*, S. Yang, M. Liu, C. Ma: ""Model Predictive Control-based Energy Routing with Over/Under Voltage Protection", IEEE Transactions on Power Electronics,  accepted on Oct. 4, 2025.

2. Z. Liu*, Y. Xiao*, M. Liu, C. Ma: "Comprehensive Impedance Analysis and Region-to-Region Transformation for Megahertz Wireless Power Transfer Systems ", IEEE Transactions on Power Electronics,  accepted on Sep. 23, 2025. [PDF]

3. Z. Li*, Y. Wang*, H. Qin*, C. Ma: "Cloud-Local Joint Energy Management for Home Microgrids under Prediction Errors and Communication Failures", IEEE Journal of Emerging and Selected Topics in Industrial Electronics, vol. 6, no. 4, pp. 1667 - 1676, Oct. 2025. [PDF]

4. N. Kang*, H. Qin*, R. Ma*, C. H. T. Lee, M. Liu, C. Ma: "Magnetic Field Projection and Current Phase Control in a 2D Planar Transmitting Coil Array", IEEE Transactions on Power Electronics,  vol. 39, no. 9, pp. 10623 - 10637, May 2024. [PDF]

5. H. Qin*, C. Liu*, Y. Shi, M. Liu, C. Ma: "Prediction-based MIMO Control of A Multiport Magnetic-coupled Energy Router", IEEE Transactions on Power Electronics, vol. 39, no. 5, pp. 6409 - 6420, May 2024. [PDF]

6. Y. Shao*, N. Kang*, H. Zhang*, R. Ma*, M. Liu, C. Ma: "A Lightweight and Robust Drone MHz WPT System via Novel Coil Design and Impedance Matching", IEEE Transactions on Industry Applications, vol. 59, no. 3, pp. 3851 - 3864, May-Jun. 2023. [PDF]

7. C. Ma, A. Alsabbagh*, A. Damiano: "Guest Editorial: Special Section on Advances in Coordination of Large-Scale EV Charging Networks”, IEEE Transactions on Industrial Informatics, vol. 19, no. 3, pp. 3251-3253, Mar. 2023.

8. H. Zhang*, Y. Shao*, N. Kang*, H. Qin*, C. Ma, M. Liu: "A Vertically Modularized Reconfigurable Wireless Power Transfer System: Architecture, Modeling, and Design", IEEE Transactions on Power Electronics, vol. 38, no. 2, pp. 2730-2742, Feb. 2023.

9. D. Yan*, C. Ma, Y. Chen: "Distributed Coordination of Charging Stations Considering Aggregate EV Power Flexibility ", IEEE Transactions on Sustainable Energy, vol. 14, no. 1, pp. 356 - 370, Oct. 2022.

10. Y. Shao*, H. Zhang*, M. Liu, C. Ma: "Explicit Design of Impedance Matching Networks for Robust MHz WPT Systems with Different Features", IEEE Transactions on Power Electronics, vol. 37, no. 9, pp. 11382 - 11393, Sep. 2022. [PDF]

11. Z. Li*,  C. Ma: "A Temporal-Spatial Charging Coordination Scheme Incorporating Probability of EV Charging Availability", Applied Energy, vol. 325, 119838, Aug. 2022. [PDF]

12. J. She,  H. Guzmán-Miranda, V. Huang, A. C. Chen, S. Karnouskos, L. Dunai, C. Ma, A. Tisan, S. Yokota: "A Cross-Disciplinary Outlook of Directions and Challenges in Industrial Electronics", IEEE Open Journal of the Industrial Electronics Society, vol. 3, pp. 375-391, May 2022.

13. N. Kang*, Y. Shao*, M. Liu, C. Ma: "Analysis and Implementation of 3D Magnetic Field Shaping via A 2D Planar Transmitting Coil Array", IEEE Transactions on Power Electronics, vol. 37, no. 1, pp. 1172-1184, Jan. 2022. [PDF]

14. M. Liu, J. Song*, C. Ma: "Analysis and Design of a Self-Resonant Rectenna for Small-Size and Ultra-Loosely Coupling MHz Wireless Power", IEEE Journal of Emerging and Selected Topics in Industrial Electronics,  vol.  2, no. 4, pp. 535-544, Oct. 2021.

15. H. Zhang*, Y. Shao*, M.  Liu, C. Ma: "A Wide Load-Range and Compact MHz Wireless Power Transfer System based on Novel Reactance Compression Design and Edge Inductor", IEEE Transactions on Power Electronics, vol. 36, no. 10, pp. 11183-11195, Oct. 2021.[PDF]

16. D. Yan*, H. Yin*, T.  Li, C. Ma: "A Two-Stage Scheme for Both Power Allocation and EV Charging Coordination in A Grid Tied PV-Battery Charging Station", IEEE Transactions on Industrial Informatics, vol. 17, no. 10, pp. 6994-7004, Oct. 2021.[PDF]

17. J. Xu*, A. Alsabbagh*, C. Ma: "Prediction-based Game-theoretic Strategy for Energy Management of Hybrid Electric Vehicles", IEEE Journal of Emerging and Selected Topics in Industrial Electronics, vol. 3, no. 1, pp. 79-89, Jun. 2021.

18. J. Song*, N. Kang*, M. Liu*, C. Ma: “A Universal Optimal Drain-Source-Voltage Tracking Scheme for Synchronous Resonant Rectifiers in Megahertz Wireless Power Transfer Applications”, IEEE Transactions on Power Electronics, vol. 36, no. 5, pp. 5147-5156, May 2021. [PDF]

19. A. Alsabbagh*, B. Wu, C. Ma: "Distributed Electric Vehicles Charging Management Considering Time Anxiety and Customer Behaviors", IEEE Transactions on Industrial informatics, vol. 17, no. 4, pp. 2422-2431, Apr. 2021. [PDF]

20. C. Ma, I. R. Bojoi, A. Damiano, S. Bayhan, G. Buticchi, T. I. Strasser, R. K. Keshiri: "IES Technical Committee Cluster of Energy", IEEE Industrial Electronics Magazine, vol. 15, no. 1, pp. 89-103, Mar. 2021. [PDF]

21. M. Liu*, H. Zhang*, Y. Shao*, J. Song*, C. Ma: "High-Performance Megahertz Wireless Power Transfer: Topologies, Modeling, and Design", IEEE Industrial Electronics Magazine, vol. 15, no. 1, pp. 28-42, Mar. 2021. [PDF]

22. H. Yin*, C. Ma: "A Decentralized Power Dispatch Strategy in An Electric Vehicle Charging Station", IET Electrical Systems in Transportation, vol. 11, pp. 25-35, Mar. 2021.

23. J. Song*, M. Liu*, C. Ma: "Analysis and Design of A High-Efficiency 6.78-MHz Wireless Power Transfer System with Scalable Number of Receivers", IEEE Transactions on Industrial Electronics, vol. 67, no. 10, pp. 8281-8291, Oct. 2020.  [PDF]

24. D. Yan*, C. Ma: "Stochastic Planning of Electric Vehicle Charging Station Integrated with Photovoltaic and Battery Systems", IET Generation, Transmission & Distribution,  vol. 14, issue 19, pp. 4217–4224 Oct. 2020. [Link]

25. M. Liu*, J. Song*, C. Ma: "Active Class E Rectifier for DC Output Voltage Regulation in Megahertz Wireless Power Transfer Systems", IEEE Transactions on Industrial Electronics, vol. 67, no. 5, pp. 3618-3628, May 2020. [PDF]

26. A. Alsabbagh*, H. Yin*, C. Ma: "Distributed Electric Vehicles Charging Management with Social Contribution Concept", IEEE Transactions on Industrial Informatics,  vol. 16, no. 5, pp. 3483-3492, May 2020 . [PDF]

27. C. Zhao*, H. Yin*, C. Ma: "Equivalent Series Resistance-based Real-time Control of Battery-Ultracapacitor Hybrid Energy Storage Systems", IEEE Transactions on Industrial Electronics, vol. 67, no. 3, pp. 1999-2008, Mar. 2020. [PDF]

28. A. Alsabbagh*, C. Ma: "Distributed Charging Management of Electric Vehicles Considering Different Customer Behaviors", IEEE Transactions on Industrial Informatics, vol. 16, no. 8, pp. 5119-5127, Nov. 2019. [PDF]

29. A. Alsabbagh*, H. Yin*, C. Ma: "Distributed Charging Management of Multi-Class Electric Vehicles with Different Charging Priorities", IET Generation, Transmission & Distribution, vol. 13, issue 22, pp. 5257–5264, Nov. 2019. [Link]

30. M. Fu*, Z. Tang*, M. Liu*, C. Ma: "Analysis and Optimized Design of Compensation Capacitors for A Megahertz WPT System Using Full-Bridge Rectifier", IEEE Transactions on Industrial Informatics, vol. 15, no. 1, pp. 95-104, Jan. 2019.  [PDF]

31. H. Yin*, C. Zhao*, C. Ma: "Decentralized Real-Time Energy Management for A Reconfigurable Multiple-Source Energy System", IEEE Transactions on Industrial Informatics, vol. 14, no. 9, pp. 4128-4137, Sep. 2018 . [PDF]

32. X. Hu, F. Baronti, C. Ma, C. Lv: "Guest Editorial Special Section on Cyber-Physical Systems in Green Transportation", IEEE Transactions on Industrial Informatics, vol. 14, no. 9, pp. 4124-4127, Sep. 2018. [Link]

33. H. Yin*, M. Fu*, M. Liu*, J. Song*, C. Ma: "Autonomous Power Control in A Reconfigurable 6.78 Megahertz Multiple-receiver Wireless Charging System", IEEE Transactions on Industrial Electronics, vol. 65, no. 8, pp. 6177-6187, Aug. 2018. [PDF]

34. S. Liu*, M. Liu*, X. Zhu, C. Ma: "Tunable Class E^2 DC-DC Converter with High-Efficiency and Stable-Output-Power for 6.78 MHz Wireless Power Transfer", IEEE Transactions on Power Electronics, vol. 33, no. 8, pp. 6877-6886, Aug. 2018. [PDF]

35. M. Fu*, C. Zhao*, J. Song*, C. Ma: "A Low-Cost Voltage Equalizer Based on Wireless Power Transfer and Voltage Multiplier", IEEE Transactions on Industrial Electronics, vol. 65, no. 7, pp. 5487-5496, Jul. 2018. [PDF]

36. M. Fu*, H. Yin*, M. Liu*, C. Ma: A 6.78 MHz Multiple-Receiver Wireless Power Transfer System with Constant Output Voltage and Optimum Efficiency", IEEE Transactions on Power Electronics, vol. 33, no. 6, pp. 5330-5340, Jun. 2018. [PDF] 

37. M. Liu*, M. Fu*, C. Ma: "Battery Cell Equalization via Megahertz Multiple-Receiver Wireless Power Transfer", IEEE Transactions on Power Electronics, vol. 33, no. 5, pp. 4135-4144, May 2018. [PDF]

38. M. Liu*, S. Liu*, C. Ma: "A High Efficiency/Output Power and Low Noise Megahertz Wireless Power Transfer System over A Wide Range of Mutual Inductance", IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 11, pp. 4317-4325, Nov. 2017. [PDF]

39. M. Fu*, H. Yin*, C. Ma: "Megahertz Multiple-Receiver Wireless Power Transfer Systems with Power Flow Management and Maximum Efficiency Point Tracking", IEEE Transactions on Microwave Theory and Techniques, vol. 65, no. 11, pp. 4285-4293, Nov. 2017. [PDF]

40. M. Liu*, C. Zhao*, C. Ma: "Battery Charging Profile-Based Parameter Design of A 6.78-MHz Class E^2 Wireless Charging System”, IEEE Transactions on Industrial Electronics, vol. 64, no. 8, pp. 6169-6178, Aug. 2017. [PDF]

41. S. Liu*, M. Liu*, S. Yang, C. Ma, X. Zhu: "A Novel Design Methodology for High-Efficiency Current-Mode and Voltage-Mode Class-E Power Amplifiers in Wireless Power Transfer Systems", IEEE Transactions on Power Electronics, vol. 32, no. 6, pp. 4514-4523, Jun. 2017. [PDF]

42. M. Liu*, Y. Qiao*, S. Liu*, C. Ma: "Analysis and Design of A Robust Class E^2 DC-DC Converter for Megahertz Wireless Power Transfer", IEEE Transactions on Power Electronics, vol. 32, no. 4, pp. 2835-2845, Apr. 2017. [PDF]

43. M. Liu*, M. Fu*, C. Ma: "Low-Harmonic-Contents and High-Efficiency Class E Full-Wave Current-Driven Rectifier for Megahertz Wireless Power Transfer Systems", IEEE Transactions on Power Electronics, vol. 32, no. 2, pp. 1198-1209, Feb. 2017. [PDF]

44. M. Fu*, H. Yin*, M. Liu*, C. Ma: "Loading and Power Control for A High-Efficiency Class E PA Driven Megahertz WPT System", IEEE Transactions on Industrial Electronics, vol. 63, no. 11, pp. 6867-6876, Nov. 2016. [PDF]

45. C. Zhao*, H. Yin*, C. Ma: "Quantitative Efficiency and Temperature Analysis of Battery-Ultracapacitor Hybrid Energy Storage Systems", IEEE Transactions on Sustainable Energy, vol. 7, no. 4, pp. 1791-1802, Oct. 2016. [PDF]

46. C. Ma, M.-Y. Chow, A. Khaligh, H. Razik: "Guest Editorial: Special Section on Networked Energy Systems: Architectures, Communication, and Management”, IEEE Transactions on Industrial Informatics, vol. 12, no. 5, pp. 1896-1899, Oct. 2016. [PDF]

47. H. Yin*, W. Zhou, C. Zhao*, M. Li, C. Ma, C. Zhao: "An Adaptive Fuzzy Logic Based Energy Management Strategy on Battery/Ultracapacitor Hybrid Electric Vehicles", IEEE Transactions on Transportation Electrification, vol. 2, no. 3, pp. 300-311, Sep. 2016. [PDF]

48. H. Yin*, C. Zhao*, M. Li, M.-Y. Chow, C. Ma: "A Game Theory Approach to Energy Management of An Engine-generator/Battery/Ultracapacitor Hybrid Energy System", IEEE Transactions on Industrial Electronics, vol. 63, no. 7, pp. 4266-4277,  Jul. 2016. [PDF]

49. F. Baronti, M.-Y. Chow, C. Ma, H. Rahimi-Eichi, R. Saletti: "The Role of Embedded Systems in Electric Energy Transfer from Grid to Vehicle", EURASIP Journal on Embedded Systems, no. 1, May 2016. [PDF]

50. M. Fu*, T. Zhang*, X. Zhu, P. Luk, C. Ma: "Compensation of Cross Coupling in Multiple-Receiver Wireless Power Transfer Systems", IEEE Transactions on Industrial Informatics, vol. 12, no. 2, pp. 474-482, Apr. 2016. [PDF]

51. C. Zhao*, H. Yin*, C. Ma: "Quantitative Evaluation of LiFePO4 Battery Cycle Life Improvement Using Ultracapacitors", IEEE Transactions on Power Electronics, vol. 31, no. 6, pp. 3989-3993,  Jun. 2016. [PDF]

52. M. Liu*, M. Fu*, C. Ma: "Parameter Design for A 6.78-MHz Wireless Power Transfer System Based on Analytical Derivation of Class E Current-Driven Rectifier", IEEE Transactions on Power Electronics, vol. 31, no. 6, pp. 4280-4291,  Jun. 2016. [PDF]

53. C. Zhao*, Y. He*, Y. Noguchi, Z. Yang, C. Ma: "Equivalent Series Resistance-Based Energy Efficiency Analysis of A Battery Semi-Active Hybrid System", IEEE Transactions on Energy Conversion, vol. 30, no. 7, pp. 3952-3963,  Jul. 2015. [PDF]

54. Y. Qiao*, C. Ma: "The Assignment of Generalized Time Constant for A Non-All-Pole System", IEEE Transactions on Industrial Electronics, vol. 62, no. 7, pp. 4276-4287,  Jul. 2015. [PDF]

55. M. Fu*, H. Yin*, X. Zhu, C. Ma: "Analysis and Tracking of Optimal Load in Wireless Power Transfer Systems", IEEE Transactions on Power Electronics, vol. 30, no. 7, pp. 3952-3963,  Jul. 2015. [PDF]

56. M. Fu*, T. Zhang*, C. Ma, X. Zhu: "Efficiency and Optimal Loads Analysis for Multiple-Receiver Wireless Power Transfer Systems", IEEE Transactions on Microwave Theory and Techniques, vol. 63, no. 3, pp. 801-812, Mar. 2015. [PDF]

57. H. Yin*, C, Zhao*, M. Li, C. Ma: "Utility Function-Based Real-Time Control of A Battery-Ultracapacitor Hybrid Energy System", IEEE Transactions on Industrial Informatics, vol. 11, no. 1, pp. 220-231, Feb. 2015. [PDF]

58. X. Wu, C. Ma: "Single-Parameter Skidding Detection and Control Specified for Electric Vehicles", Journal of the Franklin Institute, vol. 352, pp. 724-743, 2015. [PDF]

59. Y. Qiao*, J. Cao, C. Ma: "Transient Response Control of Two-Mass System via Polynomial Approach", ASME Journal of Dynamic Systems Measurement and Control, vol. 136, no. 6, 064503, Aug. 2014. [PDF]

60. M. Chow, F. Baronti, S. S. Williamson, C. Ma: "Guest Editorial: Special Section on Information and Control Technologies in the Electrification of Transportation", IEEE Transactions on Industrial Informatics, vol. 10, no. 3, pp. 1904-1906, Aug. 2014. [PDF]

61. M. Fu*, C. Ma, X. Zhu: "A Cascaded Boost-Buck Converter for High Efficiency Wireless Power Transfer Systems", IEEE Transactions on Industrial Informatics, vol. 10, no. 3, pp. 1972-1980, Aug. 2014. [PDF]

62. C. Ma, J. Cao, Y. Qiao*: "Polynomial Method Based Design of Low Order Controllers for Two-Mass System", IEEE Transactions on Industrial Electronics, vol. 60, no. 3, pp. 969-978, Mar. 2013. [PDF]

63. J. Cao, C. Ma, Z. Jiang, S. Liu: "Nonlinear Dynamic Analysis of Fractional Order Rub-impact Rotor System", Communications in Nonlinear Science and Numerical Simulation, vol. 16, no. 3,  pp. 1443-1463, Mar. 2011. [PDF]

64. C. Ma, M. Xu, H. Wang*: "Dynamic Emulation of Road/Tire Longitudinal Interaction for Developing Electric Vehicle Control Systems", Vehicle System Dynamics, vol. 49, no. 3, pp. 433-447,  Mar. 2011. [PDF]

65. J. Cao, C. Ma, H. Xie, Z. Jiang: "Nonlinear Dynamics of Duffing System with Fractional Order Damping", ASME Journal of Computational and Nonlinear Dynamics, 041012-1, vol. 5, Oct. 2010. [PDF]

66. C. Ma, Y. Hori: "Fractional-Order Control: Theory and Applications in Motion Control", IEEE Industrial Electronics Magazine, vol. 1, no. 4, pp. 6-16, 2007. [PDF]

67. C. Ma, Y. Hori: "The Time-Scaled Trapezoidal Rule for Discrete Fractional Order Controllers", Nonlinear Dynamics, Kluwer Academic Publishers, vol. 38, pp. 171-180, 2004. [PDF]

68. C. Ma, Y. Hori: "Time-domain Evaluation of Fractional Order Controllers' Direct Discretization Methods", IEEJ Transactions on Industry Applications, vol. 124, no. 8, pp. 837-842, 2004 (IEEJ: The Institute of Electrical Engineers of Japan). [PDF]

69. C. Ma, Y. Hori: "Backlash Vibration Suppression Control of Torsional System by Novel Fractional Order PID^k Controller", IEEJ Transactions on Industry Applications, vol. 124, no. 3, pp. 312-317, 2004. [PDF]

70. C. Ma, Y. Fujii and K. Yamaji: "China's electric power sector's options considering its environmental impacts'', Environmental Economics and Policy Studies, Springer-Verlag Publisher, vol. 5, no. 4, pp. 319-340, 2002. [PDF]