RESUME: QIN LEI
Qin Lei (1985~)
Wuhan, China
1 Research Circle, Niskayuna, NY, 12309
Qin.Lei@ge.com
EDUCATION
Ph. D, Electrical Engineering, Michigan State University, August, 2007~September, 2012
BS, Electrical Engineering, Huazhong University of Science and Technology, China, September 2002 ~
June 2006
WORKING EXPERIENCE
Electric Engineer, General Electric Research Center, Niskayuna, NY, USA, October 2012~Present
Intern, United Technology Research Center, East Hartford, CT, USA, March 2012 ~ October 2012
AREA OF SPECIALIZATION
High-voltage multilevel converter topology and control
Microgrid/Smart grid/Renewable sources grid-connected inverter control(Including standalone, gridconnected, and transition control)
Hybrid transportation power electronics
Medium/low power inverter modulation, optimization, efficiency
Z/quasi-Z source inverter/rectifier
QUALIFICATION
1.5 years’ industry experience on commercial multilevel modular converter development in HVDC
application
Half year’s industry experience on commercial medium voltage drive product development
Half year’s industry experience on subsea electrical system
4 years’ experience in grid-connected inverter controller design and implementation for
microgrid/smart grid/renewable sources
3 years’ experience in medium/low power inverter hardware design and optimization
Comprehensive knowledge in inverter/dc-dc converter topologies
Comprehensive knowledge in inverter PWM modulation techniques
Knowledge of power loss analysis, reduction
8 journal papers and 21 conference papers, 10 international presentations
Reviewers of 4 Journals
GPA 3.84/4.0
SKILLS
Proficient circuit simulation skills in PLECS, SABER, MATLAB & RTDS
Proficient C-programming and MATLAB programming skills
Rich experience in DSP/CPLD programming and debugging
Rich experience in Analog/Digital/Power-Circuit hardware debugging and trouble shooting
Very familiar with PCB layout and 3D structure design
MAJOR AWARDS AND HONORS
2014 Technical Bronze Award, GE Global Research, USA
2013 Innovation patent award, GE Global Research, USA
RESUME: QIN LEI
2012 The best presentation award in technique session of the 27th APEC, Orlando, FL
2010 The best presentation award in technique session of the 25th APEC, Palm Spring, CA
2011 The award for student demo of ECCE, 2011, Phoenix, Arizona
2006 Outstanding graduate of Electrical Engineering Dept. HUST, China
2004 First Prize in University Mathematics Modeling Competition of China
2004-2006 University Innovation Research Fund (1%), HUST
REVIEWER AND PROPOSAL WRITING
IEEE Transaction, Industrial Electronics/Power Electronics/IAS/Informatics, 2010-now
IEEE APEC/ECCE Conference, 2010-now
Proposal written:
“Modular, Scalable SiC PWAM Inverter for HEV/EV Traction Drives”, DOE; $3,000,000 (30%)
“Wave Disc Engine”, DOE APP# 109687, (Co-PI: 10%), award Number: DE-AR0000004 (10%)
PATENTS
Disclosure 46478, docket 267330-1, “SYSTEM AND METHOD FOR UNIFIED COMMON MODE
VOLTAGE INJECTION,” Filed on 20-DEC-12.
Disclosure, docket 275537-1, “GENERALIZED NEUTRAL POINT BALANCE METHOD FOR NLEVEL MULTILEVEL CONVERTER,” going to be filed on 20-NOV-14.
MAJOR PROJECTS IN GE
High Power Conversion Laboratory, General Electric Research Center, Niskayuna, NY
“500KV 1GW commercial HVDC Modular-Multilevel-Converter system development”,
Oct. 2012 ~ present
Personal role and delivery in this project:
•
•
Converter topology selection, comparison and analysis
Control architecture development (grid side control, back to back coordination, internal energy
storage balance control)
• Control algorithms development, simulation and implementation on the industry control platform
(design the closed-loop controller for each function and build up c-code based simulation to
implement and verify the algorithm)
• Real-Time-Digital-System (RTDS) demonstration (demonstrate the system performance in a real
time simulator)
“Subsea 3MW medium voltage drive for GE Oil and Gas”, Feb. 2014 ~ present
Personal role and delivery in this project:
•
•
•
•
Topology screening of industrialized medium voltage drives
Quantized reliability analysis of converters with redundancy design
Quantized power density analysis in terms of device and energy storage
Case study with GE and the competitor’s strategy
“Commercialized MV6 medium voltage drive (10kV) neutral point balance control development”,
March 2013 ~ May 2013 & July 2014 ~ Sep. 2014
Personal role and delivery in this project:
•
•
•
•
RESUME: QIN LEI
Proposed the neutral point balance algorithm for the 3-Level NPP medium voltage drive inverter
Proposed the general neutral point balance algorithm for the 5-Level NPP medium voltage drive
inverter
Filed two patents
Implemented the algorithm in the commercialized product control platform
“High power density high reliability subsea DC-DC converter for GE Power Conversion Corp.”,
July 2014 ~ Present.
Personal role and delivery in this project:
•
•
•
Reliability analysis and comparison for different topology candidates
Power loss analysis for various topology candidates
Control algorithm and simulation implementation of the newly proposed MMC based topology
MAJOR PROJECTS IN MSU
Graduate Research Assistant
Power Electronics and Motor Drive Laboratory, Michigan State University, 08/2007~present
“Collaborative Research: CT-T: A Resilient Real-Time System for a Secure and Reconfigurable
Power Grid”, NSF, 08/16/08 – 08/15/09 (PI): proposed a new voltage differential feedback multi-loop
controller for standalone mode; proposed a new H ∞ control method to solve the problem of grid
impedance variation in grid connected mode; proposed a voltage control based transient control strategy;
proposed a voltage envelope method for intelligent anti-islanding operation and load shedding; built a
10kW grid-connected inverter and fully tested all the functions and control algorithms.
“qZ-Source Inverters for HEV Applications” Denso Corp. Ltd. Japan. (PI: 100%), 2010-2011:
designed, built and tested a medium power(24kW) high efficiency current source HEV/EV motor drive
based on a newly proposed topology; proposed novel vector-based minimum loss and harmonics
modulation method and demonstrated it through experiments; optimized the hardware design to make
efficiency reach 98%; proposed a transient model for this current source inverter when the operation
mode changes from motoring to regeneration; demonstrated the fast dynamic response of this inverter by
theoretical analysis and experiments; inverter power density reaches 15.34 kW/L and 2.08 kW/kg; peak
efficiency reaches 98.2% and full power efficiency reaches 97.6%.
“qZ-Source Inverters for HEV Applications” Denso Corp. Ltd. Japan. APP 107602 (PI), 20092010: proposed a current-fed quasi-Z-source inverter topology to be employed in HEV motor drive;
develop a space vector PWM method to control it; built a 5 kW prototype and tested its basic buck-boost
function and regeneration capability.
“Wave Disc Engine”, DOE APP# 109687, (Co-PI: 10%).Total Project Period: 01/15/2010 –
01/14/2012, Award Number: DE-AR0000004: developed a 1kW PWAM controlled boost-converterinverter system which realizes 90% switching loss reduction than traditional SPWM controlled system;
designed and built a very compact all-in-one board inverter and operated at 1kW with efficiency of
97.6%.
PARTICIPATED PROJECTS IN MSU
Graduate Research Assistant
Power Electronics and Motor Drive Laboratory, Michigan State University, 08/2007~present
RESUME: QIN LEI
Research on “1MW cascaded multilevel inverter”, 08/2007~02/2008: proposed a new voltage balance
method, wrote the DSP code and tested it on the real 1MW CMI in the lab (30%).
Research Project on “Photovoltaic quasi-Z-source grid-connected inverter with battery”, 10/20106/2011: developed a control algorithm to maximize the utilization of the dc link voltage and did
experiment to verify that (50%).
Research project on “Z-source, Quasi-Z-Source matrix converter”, research project, 09/2010-now:
proposed four new modulation methods for this new family of matrix converter; built, full tested a 1kW
prototype and demonstrated the features of the proposed methods (70%).
“Denso-Toyota HEV Powertrain Station,” (PI) October. 2011—now. Denso and Toyota: built the
gate drive system for three inverters; design and implement the DSP code for the control of traction drive
inverter and the grid-connected inverter. (40%)
PUBLICATIONS IN JOURNALS
[1] Lei, Q., F. Peng, et al. (2010). "Multi-loop Control Method for High-Performance Microgrid Inverter
Through Load Voltage and Current Decoupling With Only Output Voltage Feedback." Power
Electronics, IEEE Transactions on PP(99): 1-1.
[2] Qin Lei; Fang Zheng Peng, "Space Vector Pulsewidth Amplitude Modulation for a Buck–Boost
Voltage/Current Source Inverter," Power Electronics, IEEE Transactions on , vol.29, no.1,
pp.266,274, Jan. 2014
[3] Lei, Q.; Cao, D.; Peng, F.Z., "Novel loss and harmonic minimized vector modulation for current-fed
quasi-z-source inverter in HEV motor drive application," Power Electronics, IEEE Transactions on ,
vol.PP, no.99, pp.1,1, 0
[4] Shuitao Yang; Qin Lei; Peng, F.Z.; Zhaoming Qian; , "A Robust Control Scheme for Grid-Connected
Voltage-Source Inverters," Industrial Electronics, IEEE Transactions on , vol.58, no.1, pp.202-212,
Jan. 2011.
[5] Shuitao Yang; Peng, F.Z.; Qin Lei; Inoshita, R.; Zhaoming Qian; , "Current-Fed Quasi-Z-Source
Inverter With Voltage Buck–Boost and Regeneration Capability," Industry Applications, IEEE
Transactions on , vol.47, no.2, pp.882-892, March-April 2011.
[6] Baoming Ge; Qin Lei; Wei Qian; Fang Zheng Peng; , "A Family of Z-Source Matrix
Converters," Industrial Electronics, IEEE Transactions on , vol.59, no.1, pp.35-46, Jan. 2012.
[7] Balaguer, I.J.; Qin Lei; Shuitao Yang; Supatti, U.; Fang Zheng Peng; , "Control for Grid-Connected
and Intentional Islanding Operations of Distributed Power Generation," Industrial Electronics, IEEE
Transactions on , vol.58, no.1, pp.147-157, Jan. 2011.
[8] Baoming Ge; Abu-Rub, H.; Fang Zheng Peng; Qin Lei; de Almeida, A.T.; Ferreira, F.J.T.E.; Dongsen
Sun; Yushan Liu, "An Energy-Stored Quasi-Z-Source Inverter for Application to Photovoltaic Power
System," Industrial Electronics, IEEE Transactions on , vol.60, no.10, pp.4468,4481, Oct. 2013
doi: 10.1109/TIE.2012.2217711
PUBLICATIONS IN CONFERENCES
[1] Qin Lei; Miaosen Shen; Blasko, V.; Peng, F.Z., "A generalized input impedance model of three phase
diode rectifier," Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth
Annual IEEE , vol., no., pp.2655,2661, 17-21 March 2013
[2] Lei, Qin, Sisheng Liang, Fang Peng, Miaosen Shen, and Vladimir Blasko. "A generalized DQ
impedance model of three phase diode rectifier," Energy Conversion Congress and Exposition (ECCE),
2013 IEEE, pp. 3340-3347, Sep 2013.
RESUME: QIN LEI
[3] Qin Lei; Peng, F.Z.; Balaguer, I.J.; , "Islanding control of DG in microgrids," Power Electronics and
Motion Control Conference, 2009. IPEMC '09. IEEE 6th International , vol., no., pp.450-455, 17-20
May 2009
[4] Qin Lei; Shuitao Yang; Fang Zheng Peng; Inoshita, R.; , "Three phase current-fed Z-source PWM
rectifier," Energy Conversion Congress and Exposition, 2009. ECCE 2009. IEEE , vol., no., pp.15691574, 20-24 Sept. 2009
[5] Qin Lei; Shuitao Yang; Fang Zheng Peng; Inoshita, R.; , "Application of current-fed quasi-Z-Source
Inverter for traction drive of hybrid electric vehicles," Vehicle Power and Propulsion Conference,
2009. VPPC '09. IEEE , vol., no., pp.754-760, 7-10 Sept. 2009
[6] Qin Lei; Shuitao Yang; Fang Zheng Peng; Inoshita, R.; , "Steady state and transient analysis of a three
phase current-fed Z-source PWM rectifier," Vehicle Power and Propulsion Conference, 2009. VPPC
'09. IEEE , vol., no., pp.426-432, 7-10 Sept. 2009
[7] Qin Lei; Shuitao Yang; Peng, F.Z.; , "Multi-loop control algorithms for seamless transition of gridconnected inverter," Applied Power Electronics Conference and Exposition (APEC), 2010 TwentyFifth Annual IEEE , vol., no., pp.844-848, 21-25 Feb. 2010
[8] Qin Lei; Shuitao Yang; Peng, F.Z.; , "High-performance and cost-effective multiple feedback control
strategy for standalone operation of grid-connected inverter," Applied Power Electronics Conference
and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE , vol., no., pp.854-860, 21-25 Feb. 2010
[9] Qin Lei; Peng, F.Z.; Liangzong He; Shuitao Yang; , "Power loss analysis of current-fed quasi-Z-source
inverter," Energy Conversion Congress and Exposition (ECCE), 2010 IEEE , vol., no., pp.2883-2887,
12-16 Sept. 2010
[10] Qin Lei; Peng, F.Z.; Shuitao Yang; , "Discontinuous operation modes of current-fed Quasi-Z-Source
inverter," Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual
IEEE , vol., no., pp.437-441, 6-11 March 2011
[11] Qin Lei; Peng, F.Z.; , "Four quadrant voltage sag/swell compensation with interphase quasi-Z-source
AC-AC topology," Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth
Annual IEEE , vol., no., pp.2013-2019, 6-11 March 2011
[12] Qin Lei; Peng, F.Z.; Baoming Ge; , "Transient modeling of current-fed quasi-Z-source
inverter," Energy Conversion Congress and Exposition (ECCE), 2011 IEEE , vol., no., pp.2283-2287,
17-22 Sept. 2011
[13] Qin Lei; Baoming Ge; Peng, F.Z.; , "Hybrid PWM control for Z-source matrix converter," Energy
Conversion Congress and Exposition (ECCE), 2011 IEEE , vol., no., pp.246-253, 17-22 Sept. 2011
[14] Qin Lei, Dong Cao, Fang. Z. Peng. Optimized control and design for 15KW current-fed quasi-Zsource Inverter in HEV motor drive application, accepted by APEC, Orlando, 2012.
[15] Qin Lei, Dong Cao, Fang. Z. Peng. Pulse-Width-Amplitude-Modulated Voltage-Fed Quasi-Z-Source
Direct Matrix Converter with maximum constant boost control, accepted by APEC, Orlando, 2012.
[16] Shuitao Yang; Qin Lei; Peng, F.Z.; Inoshita, R.; Zhaoming Qian; , "Current-fed quasi-Z-source
inverter with coupled inductors," Energy Conversion Congress and Exposition, 2009. ECCE 2009.
IEEE , vol., no., pp.3683-3689, 20-24 Sept. 2009
[17] Shuitao Yang; Qin Lei; Peng, F.Z.; Zhaoming Qian; , "A robust control scheme for grid-connected
voltage source inverters," Applied Power Electronics Conference and Exposition (APEC), 2010
Twenty-Fifth Annual IEEE , vol., no., pp.1002-1009, 21-25 Feb. 2010
[18] Shuitao Yang; Peng, F.Z.; Lei, Q.; Inoshita, R.; Zhaoming Qian; , "Current-fed quasi-Z-source inverter
with voltage buck-boost and regeneration capability," Energy Conversion Congress and Exposition,
2009. ECCE 2009. IEEE , vol., no., pp.3675-3682, 20-24 Sept. 2009
RESUME: QIN LEI
[19] Balaguer, I.J.; Supatti, U.; Qin Lei; Nam-Sup Choi; Peng, F.Z.; , "Intelligent control for intentional
islanding operation of microgrids," Sustainable Energy Technologies, 2008. ICSET 2008. IEEE
International Conference on , vol., no., pp.898-903, 24-27 Nov. 2008
[20] Balaguer, I.J.; Supatti, U.; Qin Lei; Nam-Sup Choi; Peng, F.Z.; , "Intelligent control for intentional
islanding operation of microgrids," Sustainable Energy Technologies, 2008. ICSET 2008. IEEE
International Conference on , vol., no., pp.898-903, 24-27 Nov. 2008
[21] XueLiang Wei; Ke Dai; Qin Lei; Dong Xiang; Yong Kang; Fang Luo; Guorong Zhu; , "Performance
Analysis of Three-Phase Three-Wire Shunt Active Power Filter Compensating for Unbalanced
Loads," Industrial Electronics Society, 2007. IECON 2007. 33rd Annual Conference of the IEEE , vol.,
no., pp.1875-1879, 5-8 Nov. 2007