Liyu Cao
age ~66
from Fremont, CA
Liyu Cao Phones & Addresses
- Fremont, CA
- 13379 Darview Ln, San Diego, CA 92129
- Latham, NY
Emails
Resumes
Sr. Engineer At Ametek Programmable Power
view sourceLocation:
Greater San Diego Area
Industry:
Electrical/Electronic Manufacturing
Senior Power Electronics And Control Engineer
view sourceLocation:
San Diego, CA
Industry:
Electrical/Electronic Manufacturing
Work:
Ametek Programmable Power (formerly Xantrex Technology, Elgar Electronics) since Sep 2004
Sr. Engineer
Micro Optics Design Corp. Oct 2002 - Nov 2003
Control Engineer
Carleton University Nov 1997 - Sep 2002
Research Associate
Sr. Engineer
Micro Optics Design Corp. Oct 2002 - Nov 2003
Control Engineer
Carleton University Nov 1997 - Sep 2002
Research Associate
Education:
Tsinghua University 1986 - 1989
Ph.D, Electrical Engineering Tianjin University 1982 - 1985
Master, Electrical Engineering Tianjin University 1978 - 1982
BS, Electrical Engineering
Ph.D, Electrical Engineering Tianjin University 1982 - 1985
Master, Electrical Engineering Tianjin University 1978 - 1982
BS, Electrical Engineering
Skills:
Simulink
Power Electronics
Electrical Engineering
Digital Signal Processors
Simulations
Electronics
Engineering
Power Supplies
Control Systems Design
Matlab
Analog
Manufacturing
Design For Manufacturing
Testing
Circuit Design
Pcb Design
Embedded Systems
Semiconductors
Pspice
Fpga
Product Development
Hardware Architecture
Mathcad
Motion Control
Power Electronics
Electrical Engineering
Digital Signal Processors
Simulations
Electronics
Engineering
Power Supplies
Control Systems Design
Matlab
Analog
Manufacturing
Design For Manufacturing
Testing
Circuit Design
Pcb Design
Embedded Systems
Semiconductors
Pspice
Fpga
Product Development
Hardware Architecture
Mathcad
Motion Control
Interests:
New Technology
Investing
Reading
Tennis
Classic Music
Investing
Reading
Tennis
Classic Music
Languages:
Mandarin
Japanese
Japanese
Us Patents
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Power Supply With Digital Feedback Loop
view source -
US Patent:20080079406, Apr 3, 2008
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Filed:Sep 28, 2006
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Appl. No.:11/541439
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Inventors:Gunnar R. Holmquist - Santee CA, US
Liyu Cao - San Diego CA, US
Daniel D. Zuck - Escondido CA, US -
International Classification:G05F 1/00
-
US Classification:323283
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Abstract:A power supply with digital feedback loop that is configured to generate a digital voltage error signal and a digital current error signal and to select one of the digital voltage error signal and the digital current error signal for regulating one or both of power supply output voltage and power supply output current.
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Bandwidth And Output Impedance Control In A Power Supply
view source -
US Patent:20080080218, Apr 3, 2008
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Filed:Nov 22, 2006
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Appl. No.:11/562843
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Inventors:Gunnar R. Holmquist - Santee CA, US
Liyu Cao - San Diego CA, US -
International Classification:H02M 7/00
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US Classification:363 74
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Abstract:A power supply includes a feedback loop allowing user control of bandwidth and output impedance. The feedback may combine both voltage feedback and current feedback. Control of power supply bandwidth and impedance allows legacy power supply emulation in automated test systems.
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Ac Output Power Supply With Digital Feedback Loop
view source -
US Patent:20080082277, Apr 3, 2008
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Filed:Sep 28, 2006
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Appl. No.:11/540938
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Inventors:Gunnar R. Holmquist - Santee CA, US
Liyu Cao - San Diego CA, US
Daniel D. Zuck - Escondido CA, US -
International Classification:G06F 19/00
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US Classification:702 64, 702 1, 702 57, 702 60, 702 65, 702127, 702189, 702198, 700 1, 700 90, 700286, 700297
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Abstract:An AC power supply includes a digital feedback loop for output regulation. The feedback loop generates an RMS control signal that is mixed with a desired waveform to produce an input for a feedback loop that generates an instantaneous control signal. The instantaneous control signal is used to regulate power supply output.
Liyu Cao
view sourceFriends:
Vivi Liu, Huang Annie, Lee Houghtaling, Darry Madden, Anya Belkina, Lu Xing
Youtube
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