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Torque production in an electric motor in response to current sensor error

一种电动马达、电流的技术，应用在交流电动机控制、单个电动机转速/转矩控制、电动汽车等方向，能够解决影响车辆使用和乐趣等问题

Active Publication Date: 2010-11-24
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, in prior art systems, when a current sensor error occurs, it adversely affects the use and enjoyment of a particular vehicle

Method used

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  • Torque production in an electric motor in response to current sensor error
  • Torque production in an electric motor in response to current sensor error
  • Torque production in an electric motor in response to current sensor error

Examples

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Embodiment Construction

[0079] The following detailed description is exemplary only and is not intended to limit the embodiments of the subject matter or the application and uses of such embodiments. As used herein, the word "exemplary" means "serving as an example, instance, or illustration." Any exemplary embodiment described herein is not necessarily to be construed as preferred or advantageous over other embodiments. Furthermore, there is no intention to be bound by any expressed or implied theory presented in the preceding technical field, background, brief summary or the following detailed description.

[0080] Techniques and technical solutions may be described herein with respect to functional and / or logical block components and with reference to symbolic representations of operations, process tasks and functions that may be performed by various computing components or devices. Such operations, tasks and functions are sometimes referred to as computer-implemented, computerized, software-impl...

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Abstract

Methods and systems are provided for producing a commanded torque in an electric motor in a vehicle. A method comprises obtaining a torque command, obtaining a speed of the electric motor, and operating the inverter based at least in part on a voltage command that corresponds to minimal current through the electric motor for producing the commanded torque at the instantaneous speed of the electric motor.

Description

technical field [0001] Embodiments of the subject matter described herein relate generally to electric motor drive systems, and more specifically, embodiments of the subject matter relate to methods and apparatus for controlling torque produced by an electric motor in response to current sensor errors. Background technique [0002] In vehicles using electric traction motors, an alternating current (AC) motor drive is used to provide the requested torque to the motor shaft. In practice, the amount of torque produced by a motor is directly related (although not exactly proportional) to the amount of current supplied to the motor. Thus, by adjusting and precisely controlling the input current to the electric motor, the amount of torque produced by the electric motor can be more accurately controlled. In response to a changing torque command, the motor torque response will be smoother and / or faster when the amount of current provided to the electric motor is adjusted based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/06H02P23/08H02P27/08B60L15/20
CPCH02P29/022Y02T10/7258Y02T10/643H02P21/085H02P21/00H02P21/09H02P29/032Y02T10/72
Inventor S·查克拉巴蒂M·坎贝尔
Owner GM GLOBAL TECH OPERATIONS LLC
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