Category: Uncategorized

Education

• Ph.D, Applied Chemistry, September 2020 – June 2023, University of Chinese Academic of Sciences, Beijing, China
• M.S, Chemical Engineering, September 2017 – June 2020, Hebei University of Science and Technology, Hebei, China
• B.Eng, Chemical Engineering and Technology, September 2013 – June 2017, Polytechnic College of Hebei University of Science & Technology, Hebei, China

Experience

• 02/2024 – present, Post-doctor, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA

The Research I have Been Working on

• Manufacturing and characterization of energy storage devices
• Analysis of degradation in solid-state batteries

Hobbies

• Running, dancing, and outdoor activities.

Journal Publications

1. S. S Zhang, Y. Q Wu, S. Q Chen, H. J Wang, J. F Wang, Y Nie. Two birds, one stone: Simultaneous removal of saccharides and metal ions from ionic liquid solution by selective electrodialysis. Sep. Purif. Technol. 334 (2024)126080.
2. S. S Zhang, S. Q Chen, J. F Wang, Y Nie, Y. H Li, S. J Zhang. Insight into Membrane Fouling Mechanism and Cleaning Strategy during Selective Electrodialysis Process for Metal Ions Removal from Ionic Liquid Aqueous Solutions. J. Environ.Chem. Engin. 11(2023)109246.
3. S. S Zhang, J. F Wang, F Shen, D. G Wang, S. J Zhang. Efficient removal of metal ions from the ionic liquid aqueous solution by selective electrodialysis. Sep. Purif. Technol. 295 (2022)121322.
4. L. L Zhou, S. S Zhang, Z. J Li，Z. K Zhang, R. J Liu, J Yun. WCl6 Catalyzed Cellulose Degradation at 80 oC and Lower in [BMIM]Cl. Carbohyd. Polym, 212 (2019) 289-296.
5. L. L Zhou, S. S Zhang, Z. J Li, X Ling, Z. K Zhang, R. J Liu, J Yun. Efficient degradation of phenol in aqueous solution by catalytic ozonation over MgO/AC. J. Water. Process. Eng. 36 (2020) 101168.

Education

• Ph.D, Electrical and Computer Engineering, September 2009 ¨C October 2013, University of Wisconsin – Madison, WI USA
• M.S, Electrical and Computer Engineering, September 2007 ¨C August 2009, University of Wisconsin – Madison, WI USA
• BSc., Electrical and Electronics Engineering, March 1999 – Feburuary 2006, Inha University, Incheon, South Korea

Experience

• 09/2017 ¨C present, Associate Professor, Jeonbuk National University, Jeonju, South Korea
• 09/2015 ¨C 08/2017, Assistant Professor, Kyungnam University, Changwon, South Korea
• 04/2014 ¨C 08/2015, Electrical Engineer, General Electric Global Research, Niskayuna, NY, USA

The Research I have Been Working on

• Electric motor drives and control
• Control of a grid connected inverter
• Design and control of discrete time state observers
• Model based design / Hardware in the loop

Hobbies

• Listening to music, Golf.

Journal Publications

1. https://sites.google.com/view/e-drive-system-lab/publications?authuser=0

Education

• Ph.D, Electrical Engineering, September 2016 – June 2022, Southeast University, Nanjing, China
• BSc., Electrical Engineering, September 2012 – June 2016, Southeast University, Nanjing, China

Experience

• October, 2022 – present, Post-doctor, Caili & Daniel Chang Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA
• October, 2018 – October 2019, Visiting Ph.D student, DC system, Energy conversion & Storage Group, Delft University of Technology, Delft, The Netherlands

The Research I have Been Working on

• Development of Wireless Battery Management System
• Development of Battery Energy Storage System
• Design, Modeling and Control of the Active Magntic Bearing System
• Modeling and Control of Permanent Magnet Synchronous Motors

Hobbies

• Gym workout, Movies, Hiking, Taveling.

Journal Publications

1. Gao, W., Cao, Z., Kurdkandi, N.V., Fu, Y. and Mi, C., 2024. Evaluation of the second-life potential of the first-generation Nissan Leaf battery packs in energy storage systems. eTransportation, p.100313.
2. Cheng, Z., Cao, Z., Hwang, J.T. and Mi, C., 2023. A Novel Single-Turn Permanent Magnet Synchronous Machine for Electric Aircraft. Energies, 16(3), p.1041.
3. Cao, Z., Huang, Y., Peng, F. and Dong, J., 2022. Driver Circuit Design for a New Eddy Current Sensor in Displacement Measurement of Active Magnetic Bearing Systems. IEEE Sensors Journal, 22(17), pp.16945-16951.
4. Cao, Z., Huang, Y., Guo, B., Peng, F., Dong, J. and Hemeida, A., 2021. A novel hybrid analytical model of active magnetic bearing considering rotor eccentricity and local saturation effect. IEEE Transactions on Industrial Electronics, 69(7), pp.7151-7160.
5. Peng, F., Cao, Z., Dong, J. and Huang, Y., 2021. Simplified Quadratic Optimization-Based IPMSM Full-Speed Range Rotor Position Estimation in Synchronous Rotating Frame. IEEE Transactions on Transportation Electrification, 7(3), pp.1527-1536.
6. Cao, Z., Dong, J., Wani, F., Polinder, H., Bauer, P., Peng, F. and Huang, Y., 2019, October. Sliding mode control with neural network for active magnetic bearing system. In IECON 2019-45th Annual Conference of the IEEE Industrial Electronics Society (Vol. 1, pp. 744-749). IEEE.

Education

• Ph.D, Electrical Engineering, September 2021 – Present, San Diego State University, San Diego, CA, USA
• M.S, Electrical Engineering, September 2019 – May 2021, Northeastern University, Boston, MA, USA

The Research I have Been Working on

• Modular Wireless Power Transmission for Photovoltaic Subpanel System
• Modular Plug-and-Play Photovoltaic Subpanel System with Centralized and Distributed Control

Hobbies

• Photography, cooking, and outdoor activities.

Education

• Ph.D, Power Electronics & Drives, December 26, 2014 – July 6, 2018, Indian Institute of Technology Roorkee, Roorkee, India
• M.Tech., Power Electronics & Drives, July 2009 – May 2011, Bharath University, Chennai, India
• B.E., Electrical & Electronics Engg., August 2004 – May 2008, Anna University, Chennai, India

Experience

• January,2021 – Present, Post-doctoral researcher, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA
• December 2018 – December 2020, Post-doctoral researcher, Power Electronics Lab, University of California Irvine, Irvine, CA, USA
• August 2018 – November 2020, Research Associate, Power Electronics Lab, Ajou University, Suwon, South Korea

The Research I have Been Working on

• Cost effective battery energy storage systems
• Cybersecurity on distribted energy resources ; Anti-Islanding detection ; Distributed voltage control on smart grid/micro grid
• Fault diagnosis and fault tolerant operation of power inverters
• Boost power electroinc innverter
• Energy efficienct starting of doubly fed induction machine
• Large rated variable speed pumped storage power plant

Hobbies

• Hiking, Swimming.

Selected Journal & Conferrence Publications

1. A. Joseph, K. Smedley and S. Mehraeen, ” Secure Power Distribution Against Reactive Power Control Malfunction in DER Units,” IEEE Transactions on Power Delivery.(Early Access).
2. A. Joseph, K. Smedley and S. Mehraeen, “Secure High DER Penetration Power Distribution Via Autonomously Coordinated Volt/VAR Control,” IEEE Transactions on Power Deliver, vol. 35, no. 5, pp. 2272-2284, Oct. 2020..
3. A. Joseph, T. R. Chelliah, R. Selvaraj and K. Lee, “Fault Diagnosis and Fault-Tolerant Control of Megawatt Power Electronic Converter -Fed Large Rated Asynchronous Hydro-Generator,” IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 7, no. 4, pp. 2403-2416, Dec. 2019..
4. A. Joseph, T. R. Chelliah and K. Lee, “Multi-channel VSI fed large variable speed asynchronous hydro-condenser: fault analysis, fault diagnosis and fault tolerant control,” IET Renewable Power Generation, vol. 13, no. 3, pp. 438-450, 25 2 2019..
5. A. Joseph, S.M. Kim, S. S Lee, A. Dominic, K.B. Lee, 揃oost multi-level NPC-fed VS large rated asynchronous pumped storage hydro-generating unit,?IET Electric Power Applications, vol. 13, no. 10, pp. 1488-1496, October 2019..
6. A. Joseph, R. Selvaraj, T. R. Chelliah and S. V. A. Sarma, “Starting and Braking of a Large Variable Speed Hydro-generating Unit Subjected to Converter and Sensor Faults,” IEEE Transactions on Industry Applications, vol. 54, no. 4, pp. 3372-3382, July-Aug. 2018..
7. A. Joseph, K. Desingu, R. R. Semwal, T. R. Chelliah and D. Khare, “Dynamic Performance of Pumping Mode of 250 MW Variable Speed Hydro-Generating Unit Subjected to Power and Control Circuit Faults,” IEEE Transactions on Energy Conversion, vol. 33, no. 1, pp. 430-441, March 2018..
8. A. Joseph, Y. Bak, S. S. Lee, and K. Lee,?Fault Tolerant and Reconfiguration control for Boost Multilevel Converter fed DFIM drive, in Proc. IEEE International Power Electronics Conference (IPEC), Busan, South Korea, May 2019..
9. A. Joseph and T. R. Chelliah, “Analysis of Doubly Fed Asynchronous Machine operating at condenser mode subjected to power converter faults,” in Proc. IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Trivandrum, pp. 1-6, December 2016…
10. Invited Speaker, “Cybersecurity on Distributed Energy Resources,” IEEE PES/PELS Virtual Meeting, IEEE San Diego PELS Chapter, March 2021 …
11. Invited Seminar ,?揇esign Challenges on Redundancy in Power and Control Circuit of Large Variable Speed Hydro Generating Unit,?R&D Conclave on Emerging Opportunities and Challenges of R&D in Indian Power Sector? February 2018…

Education

• 11/2019 – present, Joint Doctoral Students, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA
• Ph.D, Electrical Engineering, September 2017 – present, China University of Mining and Technology, Beijing, China
• M.Eng, Control Engineering, September 2015 – July 2017, China University of Mining and Technology, Beijing, China
• B.Eng, Electrical Engineering and Automation, September 2011 – July 2015, China University of Mining and Technology, Beijing, China

The Research I have Been Working on

• Capacitive wireless power transfer system
• PWM rectifier
• High frequency sinusoidal inverter with LLCC resonant converter

Hobbies

• Photography, running, and travel.

Journal Publications

1. Hong Cheng, Ting Chen, Cong Wang, et al, “Single-phase bridgeless rectifier based system With enhanced capability of reactive power compensation,” IEEE Access., vol. 7, pp. 181444-181457, Dec. 2019.
2. Ting Chen, Hong Cheng, Cong Wang, et al, “Open-Circuit Fault-Tolerant Design of the Cascaded H-Bridge Rectifier Incorporating Reactive Power Compensation,” Electronics., vol. 9, no. 9, pp. 1490, Sept. 2020.
3. Hong Cheng, Ting Chen, Cong Wang, et al, “Single-phase Bridgeless Rectifier with Capability of Power Quality Management,” 2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC) , 2018.
4. Ting Chen, Huan Deng, “Analysis of Reverse Recovery Loss Efficiency of Phase-Shifted Full-Bridge LLCC Resonant Converter,” Symposium on Power Electronics and Electrical Drivers (SPEED) , 2016.

Education

• Ph.D, Electrical Engineering, September 2019 – present, University of California, San Diego, La Jolla, U.S.A
• MSc., Electrical Engineering, September 2017 – January 2019, National Taiwan University, Taipei, Taiwan
• BSc., Electrical Engineering, September 2013 – June 2017, National Taiwan University of Science and Technology, Taipei, Taiwan

Experience

The Research I have Been Working on

• Interleaved Boost Converter with Low-Frequency Voltage Ripple Reduction used in server power(IFEC 2016)
• High-Efficiency, High-Density LLC Resonant Converters (IFEC 2017)
• Ripple-Based Constant On-Time Control Scheme for Buck Converter used in VRM
• Ultra-Fast Transient Constant On-TimeBuck Converter for Multi-Phase Operation
• Validating Capability of Second-life Batteries to Cost-Effectively Integrate Solar Power for Small/Medium-sized Commercial Building Applications

Hobbies

• Photography, hiking, workout, and outdoor activities.

Journal Publications

1. W. Liu, C. Cheng, C. Mi, and P. P. Mercier, ※A Novel Ultra-Fast Transient Constant On-TimeBuck Converter for Multi-Phase Operation,§ IEEE Transactions on Power Electronics, Apr. 2021.
2. W. Liu, C. Chen, C. Cheng, and H. Chen, ※A Novel Accurate Adaptive Constant On-Time Buck Converter for a Wide-Range Operation,§ IEEE Transactions on Power Electronics, vol. 35, no. 4, pp. 3729-3739, Apr. 2020.

Education

• Ph.D, Electrical Engineering, September 2013 — September 2018, Zhejiang University, Hangzhou, China
• BSc., Electrical Engineering, September 2009 — June 2013, Zhejiang University, Hangzhou, China

Experience

• 01/2019 — present, Post-doctor, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA

The Research I have Been Working on

• system design of solar PV and battery storage system
• predictive optimization of battery thermal management
• battery balancing, power electronics
• modulation strategy of high power converter
• control of permanent magnet sychronous traction motor

Hobbies

• Music, audiophile, reading, road trip.

Journal Publications

1. S. Zhao, X. Huang, Y. Fang and H. Zhang, “DC-Link-Fluctuation-Resistant Predictive Torque Control for Railway Traction Permanent Magnet Synchronous Motor in the Six-Step Operation,” in IEEE Transactions on Power Electronics, vol. 35, no. 10, pp. 10982-10993, Oct. 2020
2. S. Zhao, X. Huang, Y. Fang and J. Zhang, “Compensation of DC-Link Voltage Fluctuation for Railway Traction PMSM in Multiple Low-Switching-Frequency Synchronous Space Vector Modulation Modes,” in IEEE Transactions on Vehicular Technology, vol. 67, no. 1, pp. 235-250, Jan. 2018
3. S. Zhao, X. Huang, Y. Fang, “DC-link voltage fluctuation compensation for selected harmonics elimination under low switching frequency,” in Journal of Zhejiang University (Engineering Science), Feb. 2019
4. Y. Shang, S. Zhao, Y. Fu, B. Han, P. Hu and C. C. Mi, “A Lithium-Ion Battery Balancing Circuit Based on Synchronous Rectification,” in IEEE Transactions on Power Electronics, vol. 35, no. 2, pp. 1637-1648, Feb. 2020
5. S. Zhao, X. Huang, Y. Fang, J. Zhang and J. Wang, “DC-link-fluctuation-resistant control scheme for high power traction PMSM in six-step mode,” IECON 2017 – 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017, pp. 2245-2251
6. S. Zhao, X. Huang, Y. Fang and J. Zhang, “Influence of DC-Link Voltage Fluctuation on the Performance of Railway Traction Drive with Different Low Switching Frequency Modulation Techniques,” 2016 IEEE Vehicle Power and Propulsion Conference (VPPC), 2016, pp. 1-6, doi: 10.1109/VPPC.2016.7791707.
7. S. F. Zhao, X. Y. Huang, Y. T. Fang and J. Li, “A control scheme for a High Speed Railway traction system based on high power PMSM,” 2015 6th International Conference on Power Electronics Systems and Applications (PESA), 2015, pp. 1-8, doi: 10.1109/PESA.2015.7398905.
8. J. Wang, X. Huang, S. Zhao and Y. Fang, “Direct torque control for brushless DC motors in aerospace applications with single sided matrix converters with reduced torque ripple,” IECON 2017 – 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017, pp. 4143-4149

Education

• Ph.D, Mechnical Engineering, September 2012 – January 2017, Beijing Institute of Technology, Beijing, China
• M.S, Vehicle Engineering, September 2008 – June 2010, Beijing Institute of Technology, Beijing, China
• BSc., Vehicle Engineering, September 2003 – June 2007, South China University of Technology, Guangzhou, China

Experience

• 02/2019 – present, Post-doctor, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA

The Research I have Been Working on

• Development of Battery Management System for electric vehicles
• Development of an offline battery parameter identification algorithm for electric vehicles
• Optimal control and sizing of hybrid system based on dynamic programing
• Modeling and driver-in-the loop realtime simulation of a hybrid tracked vehicle

Hobbies

• Photography, swimming, and outdoor activities.

Journal Publications

1. Gao W, Zou Y, Sun F, et al. Data pieces-based parameter identification for lithium-ion battery[J]. Journal of Power Sources, 2016, 328: 174-184.
2. Gao W, Zou Y, Sun F. Two-Parameter Shifting Optimal Control for an Electric Bus [J]. Automotive Engineering, 2016, 38(3): 344-349.
3. Gao W, Zou Y. The Influence of Gear Number Design to Energy Consumption for an Electric Bus[J]. Transaction of Beijing Institute of Technology, 2016, 36(5): 441-445.
4. Zou Y, Gao W, Hou S, et al. System-Level Modeling and Real-Time Simulation for Hybrid Tracked Vehicle [J]. Transaction of Beijing Institute of Technology, 2013, 33(1): 31-36.
5. Gao W, Zou Y, Sun F. Optimal component sizing for a parallel hybrid bus based on dynamic programming[C]//Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Energy Coversion Conference and Expo. IEEE, 2014: 1-5.

Education

• Ph.D, Electrical Engineering, September 2012 – June 2017, Zhejiang University, Hangzhou, China

• BSc., Electrical Engineering, September 2008 – June 2012, Zhejiang University, Hangzhou, China

Experience

• 01/2018 – present, Post-doctor, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA

The Research I have Been Working on

• Wireless power transmission in gate drivers for power electronics devices

• Optimized control of the DFIG-based wind power generation system

• Predictive control of the three-phase grid-connected inverter

• Control of servo drives

Hobbies

• Photography, swimming, and outdoor activities.

Journal Publications

1. 1. Chenwen Cheng, Heng Nian, “Low-complexity model predictive stator current control of DFIG under harmonic grid voltages,” IEEE Trans. Energy Convers., vol. 32, no. 3, pp. 1072-1080, Sept. 2017.

   2. Chenwen Cheng, Heng Nian, Xiaohe Wang, Dan Sun, “Dead-beat predictive direct power control of voltage source inverters with optimized switching patterns,” IET Power Electron., vol. 10, no. 12, pp. 1438-1451, Oct. 2017.

   3. Chenwen Cheng, Heng Nian, Longqi Li, “Improved three-vector based dead-beat model predictive direct power control strategy for grid connected inverters,” Frontiers of Information Technology & Electronic Engineering, to be published.

   4. Heng Nian, Chenwen Cheng, Yipeng Song, “Coordinated control of the DFIG system based on repetitive control strategy under generalized harmonic grid voltages,” Journal of Power Electron., vol. 17, no. 3, pp. 733-743, May 2017.

   5. Chenwen Cheng, Peng Cheng, Heng Nian, Dan Sun, “Model Predictive Stator Current Control of Doubly Fed Induction Generator During Network Unbalance,” IET Power Electron., to be published.

   6. Chenwen Cheng, Heng Nian, Jian Wu, Peng Cheng, Yipeng Song, “An independent control technique of DFIG’s RSC and GSC based on repetitive control in generalized harmonic power grids (in Chinese),” Proceedings of the CSEE, vol. 36, no. 15, pp. 4099-4107, Aug. 2016.

   7. Heng Nian, Chenwen Cheng, Yipeng Song, Peng Cheng, “A direct power control technique of DFIG based on repetitive control in generalized harmonic power grids (in Chinese),” Proceedings of the CSEE, vol. 36, no. 2, pp. 407-416, Jan. 2016.

Conference Publications

1. 1. Heng Nian, Chenwen Cheng, “Improved grid connection operation of type-III wind turbine under unbalanced fundamental and distorted grid voltages,” 10th International Conference on Advances in Power System Control, Operation & Management (APSCOM 2015), 2015.

Education

• Ph.D., Electrical Engineering, September 2015 – present, San Diego State University, San Diego, CA, USA

• Ph.D., Electrical Engineering, September 2015 – present, University of California San Diego, La Jolla, CA, USA

• M.S., Electrical Engineering, August 2011 – May 2013, University of Southern California, Los Angeles, CA, USA

• B.Eng., Electrical Engineering, September 2007 – June 2011, Huazhong University of Science and Technology, Wuhan, China

Research Interest

• Wireless Charging for Electric Vehicles and Comsumer Electronics

• Electromagnetics Design

• Compensation Topology

• Power Converters Design and Validation

Work Experience

• 01/2018 – 04/2018, Wireless Power Modeling Intern, Integrated Device Technology, Inc., San Jose, CA, USA

• 09/2015 – 12/2017, Reserach Assistant, DOE GATE Center for Electric Drive Transportation, San Diego State University, San Diego, CA, USA

• 09/2013 – 08/2015, Graduate Student Research Assistant, DOE GATE Center for Electric Drive Transportation, University of Michigan, Dearborn, MI, USA

• 01/2013 – 05/2013, Student Worker, Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA, USA

Teaching Experience

• 08/2017 – 12/2017, Teaching Associate, EE-330L Engineering Electronics Lab, San Diego State University, San Diego, CA, USA

Academic Services

• Reviewer for IEEE Transactions on Power Electronics, IEEE Transactions on Transportation Electrification, IEEE Applied Power Electronics Conference and Exposition, IEEE Transportation Electrification Conference and Expo, and IEEE Engergy Conversion Congress and Exposition.

Honors/Awards

 

• 2015 IEEE IFEC Best Innovation Design

• 2015 IEEE IFEC Dedicated Volunteer

Journal Publications

1. T. Kan, F. Lu, T. D. Nguyen, P. P. Mercier, and C. Mi, “Integrated Coil Design for EV Wireless Charging Systems Using LCC Compensation Topology,” IEEE Trans. Power Electron., 2018. [accepted]

2. T. Kan, R. Mai, P. P. Mercier, and C. Mi, “Design and Analysis of a Three-Phase Wireless Charging System for Lightweight Autonomous Underwater Vehicles,” IEEE Trans. Power Electron., 2017. [in press]

3. T. Kan, T. D. Nguyen, J. C. White, R. K. Malhan, and C. Mi, “A new integration method for an electric vehicle wireless charging system using LCC compensation Topology: Analysis and Design,” IEEE Trans. Power Electron., vol. 32, no. 2, pp. 1481-1492, Feb. 2017.

4. X. Zhang, T. Kan, C. You, and C. Mi, “Modeling and analysis of AC output power factor for wireless Chargers in electric vehicles,” IEEE Trans. Power Electron., vol. 32, no. 2, pp. 1638-1650, Feb. 2017.

5. Z. Bi*, T. Kan*, C. C. Mi, Y. Zhang, Z. Zhao, and G. A. Keoleian, “A review of wireless power transfer for electric vehicles: Prospects to enhance sustainable mobility,” Applied Energy, 179, pp. 413-425, Oct. 2016. [*equal contribution]

6. W. Li, H. Zhao, S. Li, J. Deng, T. Kan, and C. C. Mi, “Integrated LCC compensation topology for wireless charger in electric and plug-in electric vehicles,” IEEE Trans. Ind. Electron., vol. 62, no. 7, pp. 4215-4225, July. 2015.

Conference Publications

1. T. Kan, R. Mai, P. P. Mercier, and C. Mi, “A Three-Phase Wireless Charging System for Lightweight Autonomous Underwater Vehicles,” in Proc. IEEE Appl. Power Electron. Conf. Expo., 2017, pp. 1407-1411.

2. W. Li, H. Zhao, T. Kan, and C. Mi, “Inter-operability considerations of the double-sided LCC compensated wireless charger for electric vehicle and plug-in hybrid electric vehicle applications,” in Proc. IEEE PELS Workshop Emerging Technol. : Wireless Power, 2015, pp. 1-6.