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Yo Chan Son

from Rochester Hills, MI
Age ~49
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Also known as:
Yo C Son, Yochan C Son, Yochan N Son, Chan Son Yo, Son Yo
Connected to:
Andy H Son, 53Bo K Son, 38Brenda L Son, 112Chanda Son, 34Chantha Son, 35Chieu Son, 36Dong Son, 51Dung Son, 54Duoc T Son, 51Edgar Son, 36

Yo Son Phones & Addresses

  • Rochester Hills, MI
  • Rancho Palos Verdes, CA
  • Torrance, CA
  • Inglewood, CA

Resumes

Resumes

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Yo Son

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Yo Son Photo 2

Independent Banking Professional

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Location:
Greater Los Angeles Area
Industry:
Banking

Publications

Us Patents

Power Inverter Module Thermal Management

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US Patent:
7755313, Jul 13, 2010
Filed:
Sep 12, 2007
Appl. No.:
11/853862
Inventors:
Yo Chan Son - Torrance CA, US
Gabriel Gallegos-Lopez - Torrance CA, US
Silva Hiti - Redondo Beach CA, US
Michael Milani - San Pedro CA, US
Milun Perisic - Torrance CA, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
H02P 7/00
US Classification:
318432, 318471
Abstract:
According to an example embodiment, a method is provided for limiting an operational temperature of a motor. The method includes generating a maximum allowable current I*for a motor based on a temperature difference between a temperature reference T* of a power inverter module and a semiconductor device temperature T of the power inverter module. The method further includes generating a maximum allowable torque T*based on the maximum allowable current I*and a maximum allowable flux Ψ*, and using the maximum allowable torque T*to limit the torque command T*in order to suppress the semiconductor device temperature T to below the temperature reference T*.

Linearity For Field Weakening In An Interior Permanent Magnet Machine

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US Patent:
7759886, Jul 20, 2010
Filed:
Jul 27, 2007
Appl. No.:
11/829298
Inventors:
Gabriel Gallegos-Lopez - Torrance CA, US
Yo Chan Son - Torrance CA, US
Milun Perisic - Torrance CA, US
Silva Hiti - Redondo Beach CA, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
H03K 5/00
US Classification:
3184002, 3184001, 318722
Abstract:
Systems and methods are disclosed to provide torque linearity in the field-weakening region for an IPM machine. The systems and methods adjust the q-axis and the d-axis components of the stator current commands of the IPM machine using a flux weakening and a torque linearity control loop respectively. Thereby, torque linearity is maintained during the field weakening region of operation of the IPM machine.

Electric Motor Stator Winding Temperature Estimation

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US Patent:
7839108, Nov 23, 2010
Filed:
Jan 24, 2008
Appl. No.:
12/019395
Inventors:
Nitinkumar R. Patel - Cypress CA, US
Yo Chan Son - Torrance CA, US
Silva Hiti - Redondo Beach CA, US
Steven E. Schulz - Torrance CA, US
Assignee:
GM Global Technology Operations, Inc. - Detroit MI
International Classification:
H02H 5/04
US Classification:
318432, 318434, 318700, 31840001, 318799, 318801, 318802, 318806, 361 23, 361 24, 361 25, 361 27
Abstract:
A temperature estimation controller and methods are provided for controlling a torque command to prevent overheating of one or more of a plurality of phases of a permanent magnet motor. The temperature estimation controller includes a low speed temperature estimation module, a transition module and a temperature dependent torque command derater block. The low speed temperature estimation module determines a stator temperature of each of a plurality of phases of the permanent magnet motor in response to first thermal impedances measured for each of the plurality of phases with respect to a thermal neutral. The transition module is coupled to the low speed temperature estimation module and outputs the stator temperature of each of a plurality of phases of the permanent magnet motor as determined by the low speed temperature estimation module when a detected speed of the permanent magnet motor is less than a first predetermined speed. The temperature dependent torque command derater block is coupled to the transition module and derates the torque command in response to the stator temperature of one or more of the plurality of phases.

Linearity For Field Weakening In An Interior Permanent Magnet Machine

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US Patent:
7923953, Apr 12, 2011
Filed:
May 24, 2010
Appl. No.:
12/786104
Inventors:
Gabriel Gallegos-Lopez - Torrance CA, US
Yo Chan Son - Torrance CA, US
Milun Perisic - Torrance CA, US
Silva Hiti - Redondo Beach CA, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H03K 5/00
US Classification:
3184002, 3184001, 318722
Abstract:
Systems and methods are disclosed to provide torque linearity in the field-weakening region for an electric (e. g. , IPM) machine. The systems and methods implement a field weakening and a torque linearity control loop for linearizing torque generated by an electric machine. As a result, torque linearity is maintained when the electric machine operates in the field weakening region.

Permanent Magnet Motor Start-Up

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US Patent:
7932691, Apr 26, 2011
Filed:
Apr 22, 2008
Appl. No.:
12/107132
Inventors:
Yo Chan Son - Torrance CA, US
Bon Ho Bae - Torrance CA, US
Michael Milani - Ranchos Palos Verdes CA, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H02P 1/24
US Classification:
318727, 31840003, 31840015
Abstract:
Methods and apparatus are provided for startup of a permanent magnet alternating current (AC) motor. The method comprises the steps of detecting startup of the permanent magnet AC motor; detecting a mechanical oscillation of the permanent magnet AC motor when startup of the permanent magnet AC motor is detected; and, in response to detection of the mechanical oscillation of the permanent magnet AC motor when startup is detected, suppressing the mechanical oscillation of the permanent magnet AC motor.

Initial Polarity Detection For Permanent Magnet Motor Drives

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US Patent:
8018187, Sep 13, 2011
Filed:
Jan 5, 2009
Appl. No.:
12/348684
Inventors:
Steven E. Schulz - Torrance CA, US
Constantin C. Stancu - Anaheim CA, US
Yo Chan Son - Torrance CA, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H02P 1/46
US Classification:
31840033, 31840002, 31840032, 318716, 318722
Abstract:
Methods and apparatus are provided for aligning a control reference axis with a magnetic north of a permanent magnet motor. The method includes the steps of injecting a predetermined stator current on an estimated reference axis of the permanent magnet motor and introducing predetermined error on the estimated reference axis. The method further includes the steps of determining if a speed of the permanent magnet motor is greater than a predetermined threshold speed and setting the control reference axis to 180 added to the estimated reference axis if the speed of the permanent magnet motor is greater than the predetermined threshold speed or setting the control reference axis to the estimated reference axis if the speed of the permanent magnet motor is less than or equal to the predetermined threshold speed.

Permanent Magnet Ac Motor Systems And Control Algorithm Restart Methods

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US Patent:
8054030, Nov 8, 2011
Filed:
Jan 22, 2008
Appl. No.:
12/017817
Inventors:
Yo Chan Son - Torrance CA, US
Seok-Joo Jang - Irvine CA, US
Rostam Dehmoobed Nasrabadi - Porter Ranch CA, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H02P 21/14
US Classification:
318778, 318102, 318103, 318431
Abstract:
Permanent magnet alternating current (PMAC) motor systems and methods for starting or restarting PMAC motor system sensorless control algorithms are provided. One system includes a PMAC motor including a rotor, an inverter, and a controller. The controller includes control logic, start/restart logic, drive logic, current detect logic, and estimation logic configured to estimate a position of the rotor, a speed of the PMAC motor, or both based on current detected in each phase of the inverter. A start/restart method includes determining to start/restart the sensorless control algorithm and modifying the inverter voltage in response to the determined start/restart. The method also includes detecting current in each inverter phase after the inverter voltage is modified and estimating a rotor position, a PMAC motor speed, or both based on the current detected in each inverter phase after the inverter voltage is modified. Another controller includes means for performing the above start/restart method.

Methods, Systems And Apparatus For Dynamically Controlling An Electric Motor That Drives An Oil Pump

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US Patent:
8174222, May 8, 2012
Filed:
Oct 12, 2009
Appl. No.:
12/577516
Inventors:
Nitinkumar R. Patel - Cypress CA, US
Yo Chan Son - Torrance CA, US
Assignee:
GM Global Technology Operations LLC - Detroit MI
International Classification:
H02P 6/00
H02P 21/00
H02P 7/00
H02P 23/00
H02P 27/04
G05B 11/28
B60K 1/02
F16H 59/00
F04C 18/00
US Classification:
31840032, 31840001, 31840002, 318599, 318727, 318799, 318492, 318802, 318807, 318811, 477 3, 477 98, 4182061
Abstract:
Methods, system and apparatus are provided for sensorless control of a vector controlled motor drive system that includes an electric motor used to drive an auxiliary oil pump.
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Yo Chan Son from Rochester Hills, MI, age ~49 Get Report