Y.S.LAI
(Yen-Shin Lai)Fellow, IEEE
Chair Professor, Taipei Tech.
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Y.S.LAI
BRISTOL
2014 IEEE FELLOW2012 1012007 96 2007 -2003 Prize Paper Award, IEEE IAS Industrial Drives
Committee1998 The Best Journal Paper Award, John Hopkinson
Premium, IEE
Yen-Shin Lai
Y.S.LAI
SummaryIntroduce the experience of collaboration projects
(78 industry sponsored projects from Singapore,Taiwan, Japan and USA)Illustrate some examples of my IEEE papers
based upon collaboration work achievementsHopefully, inspire those who are interested in both
publishing IEEE papers and focusing oncollaboration work
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Y.S.LAI
OutlineIntroductionLab. Profile and MissionCollaboration WorkExperience Sharing
-Turn Collaboration Work into IEEE Transaction Papers Brushless DC Motor Drives Projects (2 IEEE Trans. Papers)On-line UPS Project (1 IEEE Trans. Paper)
Remarks
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Y.S.LAI
IntroductionSent: Tuesday, February 16, 2016 2:01 PMTo: [email protected]: 105IEEEIEEE
(IEEE) IEEE5171:30-4:3080-100B425:13:30-13:40 13:40-14:30 Session 1 IEEEDiscovery Search14:30-15:10 Session 2 IEEE Fellow 15:10-15:20 15:20-16:20 Session 3 IEEE16:20-16:30 Q&A [Session 2Fellow] IEEE
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Y.S.LAI
Introduction
(in February)
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Y.S.LAI
IntroductionSent: Wednesday, February 17, 2016 10:11 AMTo: [email protected]: Re: 105IEEEIEEE
Hi Prof. LaiWe are glad to host IEEE Se minar with NTUT library. I really appreciate Prof. Lai would be willing to accept our invitation and we only invite one fellow to this session. In this session, professor might need to prepare the PowerPoint and it will spend about 40 minutes to share your successful experience. For your information, as following website links are topics from other fellows in past three years seminars:2015http://www.hintoninfo.com.tw/IEEE_2015.html2014http://www.hintoninfo.com.tw/upload/ieee/2014/2014_ieee_03.html2013http://www.hintoninfo.com.tw/upload/ieee/02.htm
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Y.S.LAI
Introduction
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Y.S.LAI
Introduction
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Y.S.LAI
Introduction
Think Globally and Act Locally!
()
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Y.S.LAI
Lab. Profile and Mission Final-Year Project Lab.- since 1995
TI DSPS Project Lab.- established in 1999
Approximate 5 Million NT $ Donation From TexasInstrument Inc.
11http://www.ee.ntut.edu.tw/teacher/teacher2.php?tsn=7
Y.S.LAI
Lab. Profile and Mission
Education
Hands-on Experience
Industry Collaboration
Enrich Life
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Y.S.LAI
Collaboration Work
Government-Based Sponsor
Industrial-based Sponsor Semiconductor-based Sponsor
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Y.S.LAI
Collaboration WorkSponsors for RD Master Program
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Y.S.LAI
Collaboration Work
(1987-)
(200X-)
(2004-)
(2005-)
Publish more than 130 IEEE Papers
Impact
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Y.S.LAI
Inverter Control
Motor Drives
AC/DC Power Converter
DC/DC Power Converter
IC Design for Power Electronics Control
FPGA and DSP-based Power Controller Design
Digital Power Control
Collaboration Work
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Y.S.LAI
Collaboration WorkSoft PWM
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Y.S.LAI
Soft PWM
Soft PWMConventionalLine Current, 20 Hz
Collaboration Work
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Y.S.LAI
Collaboration Work
L
L
R
R
+
+
+
-
-
-
+
-
ncne
bne
ane
dcvR
Load
ai
bi
L Li
ai bi
ci
ci
vdcaV cV cibV
SVPWMModulation
Output
DSPTMS320F240
Serial Interface
A/Dconverter
A/Dconverter
A/Dconverter
VoltageSensors
CurrentSensors
PC
aV
cVbV
aibici
DS1104DSP Control Board
PCI BUS
VoltageSensors
vdc
AC/DC Converter
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Collaboration Work
Experimental Results, 1500 WOutput, DC Voltage and Current Input AC Voltage and Current
AC/DC Converter
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Y.S.LAI
Analog Power
Half Bridge DC/DC Converter: 48 V/3.3V
Adapter: PFC+DC/DC Converter + standbyissue
VRM: multiphase
ATX: multiple outputs
Magnetic-less Converter
Collaboration WorkPower Converters
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Load (Total 500W) 10% 20% 50% 100%80 plus Titanium (230 V internal) 90% 94% 96% 91%
TESTED RESULTS 93.31% 94.65% 96.11% 95.59%
80 plus Titanium Efficiency Code (230 V internal)
Achieved Achieved Achieved Achieved
Collaboration WorkDigital Power
Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
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Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, at al. New initial position detection technique for three-phase brushless DC motor withoutposition and current sensors, IEEE Trans. on Industrial Applications, Vol. 39, No. 2, pp. 485-491, March/April 2003.
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Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, at al. New initial position detection technique for three-phase brushless DC motor withoutposition and current sensors, IEEE Trans. on Industrial Applications, Vol. 39, No. 2, pp. 485-491, March/April 2003.
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Linear (Non-saturated) Saturated magnetic field
Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, at al. New initial position detection technique for three-phase brushless DC motor withoutposition and current sensors, IEEE Trans. on Industrial Applications, Vol. 39, No. 2, pp. 485-491, March/April 2003.
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[7] [6] [5]
(A) (B) (C)
Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, at al. New initial position detection technique for three-phase brushless DC motor withoutposition and current sensors, IEEE Trans. on Industrial Applications, Vol. 39, No. 2, pp. 485-491, March/April 2003.
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Saturation
Linear
Rise time [5-7] Falling time [1]
Instead of detecting the rise time of current, falling time is detected.
Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, at al. New initial position detection technique for three-phase brushless DC motor withoutposition and current sensors, IEEE Trans. on Industrial Applications, Vol. 39, No. 2, pp. 485-491, March/April 2003.
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U
V W
Vdc
12V
P
N
U
V W
T1 T2
VU-N
VV-N
VW-N
t
t
t
excitationsignal
Vdc
measuredsignal
Vdc+0.7
Vdc+0.70.5Vdc
Current path for t in T1 period
Current path for t in T2 period
Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, at al. New initial position detection technique for three-phase brushless DC motor withoutposition and current sensors, IEEE Trans. on Industrial Applications, Vol. 39, No. 2, pp. 485-491, March/April 2003.
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tU1>tV1 Z = 1 tW2tW3 X= 1
Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, F. S. Shyu, and Y. H. Chang, "Novel loss reduction pulse-width modulation technique forbrushless DC motor drives fed by MOSFET inverter," IEEE Trans. on Power Electronics, Vol. 19, No. 6, pp. 1646-1652, 2004.
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Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, F. S. Shyu, and Y. H. Chang, "Novel loss reduction pulse-width modulation technique forbrushless DC motor drives fed by MOSFET inverter," IEEE Trans. on Power Electronics, Vol. 19, No. 6, pp. 1646-1652, 2004.
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Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, F. S. Shyu, and Y. H. Chang, "Novel loss reduction pulse-width modulation technique forbrushless DC motor drives fed by MOSFET inverter," IEEE Trans. on Power Electronics, Vol. 19, No. 6, pp. 1646-1652, 2004.
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Y.S.LAI
Experience SharingBrushless DC Motor Drives Projects
Source: Y. S. Lai, F. S. Shyu, and Y. H. Chang, "Novel loss reduction pulse-width modulation technique forbrushless DC motor drives fed by MOSFET inverter," IEEE Trans. on Power Electronics, Vol. 19, No. 6, pp. 1646-1652, 2004.
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YSLai
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Experience SharingOn-line UPS Project
YSLai
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Auxiliary Power
MCUSH7216
Charger
InverterPFC
Boost
Experience SharingOn-line UPS Project
YSLai
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Ch1 : PFC output voltage(100 V/div)
Ch2 : Inverter outputvoltage (400 V/div)
Ch3 : PFC input voltage(400 V/div)
Ch4 : Battery current (1 A/div)
Line Battery Line mode
Ch1
Ch4
Ch2
Ch3Restore
Blackout
Inverter
Experience SharingOn-line UPS Project
Y.S.LAI
Experience Sharing
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Source: B. Y. Chen and Y. S. Lai, "New digital-controlled technique for battery charger with constant current andvoltage control without current feedback," IEEE Trans. on Industrial Electronics, Vol. 59, No. 3, pp. 1545 1553,2012.
On-line UPS Project
Y.S.LAI
Experience Sharing
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Source: B. Y. Chen and Y. S. Lai, "New digital-controlled technique for battery charger with constant current andvoltage
