Bing A Cheng

US Patent:

6867987, Mar 15, 2005

Filed:

Jun 13, 2003

Appl. No.:

10/461933

Inventors:

Bing Cheng - West Bloomfield MI, US
Fengtai Huang - Windsor, CA

Assignee:

Ballard Power Systems Corporation - Dearborn MI

International Classification:

H02M001/12

US Classification:

363 43, 363 71

Abstract:

A multilevel inverter control system having logic configured to substantially minimize and area between a target waveform and a step signal of a multilevel inverter.

US Patent:

6894450, May 17, 2005

Filed:

Jan 16, 2003

Appl. No.:

10/346724

Inventors:

Bing Cheng - West Bloomfield MI, US
Duo Deng - Canton MI, US
Fengtai Huang - Windsor, CA

Assignee:

Ballard Power Systems Corporation - Dearborn MI

International Classification:

H02P001/18

US Classification:

318254, 318138, 318439, 318459, 318500, 318609, 318610

Abstract:

Circuits and methods for use with an integrated circuit chip having internal back EMF estimation to control a permanent magnet synchronous motor includes an AC current feedback circuit, a scaling circuit, and a current regulator. Additionally, a speed regulator may be employed. In one embodiment, during operation at very low speed, the speed regulator is in an open loop control mode due to a back EMF detection limitation of the IC chip, and only the current regulator is active. A feedback current signal, together with a user-defined command current signal, serves the input of the current regulator, which controls the AC motor current and drives the motor speed from standstill. Once the motor speed reaches a certain level, the measured back EMF from the IC chip is sufficient to estimate the motor speed, which is compared with a user-defined command speed, and an error of the these two signals provides the input of a speed regulator.

US Patent:

6927988, Aug 9, 2005

Filed:

May 28, 2003

Appl. No.:

10/447708

Inventors:

Bing Cheng - West Bloomfield MI, US
Kent M. Harmon - Troy MI, US

Assignee:

Ballard Power Systems Corporation - Dearborn MI

International Classification:

H02H007/122

US Classification:

363 5604

Abstract:

A method for diagnosing faults using a load. In the method IGBTs are controlled such that certain currents are expected. If the currents are not as expected, a fault may be diagnosed.

US Patent:

7426099, Sep 16, 2008

Filed:

Jun 29, 2006

Appl. No.:

11/480311

Inventors:

Christophe Soudier - Ypsilanti MI, US
Bing Cheng - West Bloomfield MI, US
Steven J. Kowalec - Plymouth MI, US
Venkatapathi R. Nallapa - West Bloomfield MI, US
Richard J. Hampo - Plymouth MI, US

Assignee:

Continental Automotive Systems US, Inc. - Auburn Hills

International Classification:

H02H 7/08

US Classification:

361 23, 361 18, 701 29, 701 33, 701 41, 340 651

Abstract:

A control system, method and article allows a monitoring module to monitor operation of a main controller in an electric drive, by providing questions and evaluating the accuracy and/or timeliness of responses from the main controller. Upon detection of an excessive number of incorrect or late responses, the monitoring module can shutdown operation, and may provide an alternative communications path, thereby preventing corrupt data from reaching a vehicle network, while providing communications for diagnostic and recovery such as by provision of new software or firmware instructions. The main controller may monitor the operation of the monitoring module, taking appropriate action if a fault is detected. Disabling a supply of power to a traction motor may be based on current operating conditions, such as speed.

US Patent:

7469193, Dec 23, 2008

Filed:

Nov 16, 2006

Appl. No.:

11/601606

Inventors:

Bing Cheng - West Bloomfield MI, US

Assignee:

Continental Automotive Systems US, Inc. - Auburn Hills

International Classification:

G01P 21/00

US Classification:

702 94

Abstract:

A system and method for compensating a resolver are disclosed. Briefly described, one embodiment receives at least one output signal from the resolver, the resolver detecting a current position of a rotor coupled to the resolver; determines if the current position of the rotor is detected by a first pole-pair of the resolver or if the current position is detected by a second pole-pair of the resolver; in response to determining that the current position of the rotor is detected by the first pole-pair, synchronizes the output signal from the resolver with a first resolver angle error information; and in response to determining that the current position of the rotor is detected by the second pole-pair, synchronizes the output signal from the resolver with a second resolver angle error information.

US Patent:

7586286, Sep 8, 2009

Filed:

Nov 17, 2006

Appl. No.:

11/601461

Inventors:

Bing Cheng - West Bloomfield MI, US
Tod R. Tesch - Novi MI, US

Assignee:

Continental Automotive Systems US, Inc. - Auburn Hills MI

International Classification:

H02P 27/04

US Classification:

318807, 318712, 318717, 318719, 318812, 318800, 318723, 318799, 318815, 318700

Abstract:

A system and method for controlling a permanent magnet motor are disclosed. Briefly described, one embodiment receives a torque command and a flux command; receives information corresponding to a direct current (DC) bus voltage and a motor speed; computationally determines feedforward direct-axis current information and feedforward quadrature-axis current information from a plurality of parameters associated with the permanent magnet motor; determines a current signal (i*) based upon at least the requested torque command, the flux command, the DC bus voltage, the motor speed, the feedforward direct-axis current information, and the feedforward quadrature-axis current information; and controls a power inverter that converts DC power into alternating current (AC) power that is supplied to the permanent magnet motor, such that the permanent magnet motor is operated in accordance with the determined i*.

US Patent:

8239154, Aug 7, 2012

Filed:

Aug 28, 2008

Appl. No.:

12/199940

Inventors:

Bing Cheng - West Bloomfield MI, US

Assignee:

Continental Automotive Systems US, Inc. - Auburn Hills MI

International Classification:

G01C 17/38

US Classification:

702 94

Abstract:

A system and method for compensating a resolver are disclosed. Briefly described, one embodiment receives at least one output signal from the resolver, the resolver detecting a current position of a rotor coupled to the resolver; determines if the current position of the rotor is detected by a first pole-pair of the resolver or if the current position is detected by a second pole-pair of the resolver; in response to determining that the current position of the rotor is detected by the first pole-pair, synchronizes the output signal from the resolver with a first resolver angle error information; and in response to determining that the current position of the rotor is detected by the second pole-pair, synchronizes the output signal from the resolver with a second resolver angle error information.

US Patent:

8593088, Nov 26, 2013

Filed:

Jan 13, 2012

Appl. No.:

13/350211

Inventors:

Ahmad Khan - Rochester Hills MI, US
Jonathan M. Sibley - Auburn HIlls MI, US
Bing Cheng - West Bloomfield MI, US

Assignee:

Chrysler Group LLC - Auburn Hills MI

International Classification:

H02P 21/14

US Classification:

31840002, 31840011, 318432, 318490, 700287, 700297

Abstract:

A system and method for calibrating an interior permanent magnet (IPM) motor with an optimized maximum torque per ampere trajectory curve. The system and method use a real-time particle swarm technique that requires less known parameters than standard maximum torque per ampere trajectory techniques.