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Method and system for compensating for current sensor offset of inverter

一种电流传感器、逆变器的技术，应用在控制系统、测量电流/电压、交流功率输入变换为直流功率输出等方向，能够解决电动机速度波动、驾驶员不便等问题

Active Publication Date: 2017-06-13
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The torque error component appears in a sine wave pattern having the same frequency as the synchronous rotation frequency of the motor, and this torque error appears as motor speed fluctuations from the vehicle's point of view, causing inconvenience to the driver

Method used

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  • Method and system for compensating for current sensor offset of inverter
  • Method and system for compensating for current sensor offset of inverter
  • Method and system for compensating for current sensor offset of inverter

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Embodiment Construction

[0033] The terminology used herein is for describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It is further understood that the terms "comprising" and / or "comprising", when used in this specification, designate the existence of stated features, integers, steps, operations, elements and / or components, but do not exclude one or more other features, Presence or addition of wholes, steps, operations, elements, parts and / or collections thereof. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0034]It should be understood that the terms "vehicle" or "vehicular" or other similar terms as used herein generally include motor vehicles such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicle...

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PUM

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Abstract

A method of compensating for a current sensor offset of an inverter includes: calculating a current sensor offset based on an output value of a current sensor, which detects an output current of the inverter, after a vehicle has started and before a current control of the inverter is performed; actuating the inverter to perform the current control according to the calculated current sensor offset; determining whether the inverter enters a burst mode while performing the current control; and re-calculating the current sensor offset based on the output value of the current sensor when the inverter is determined to enter the burst mode.

Description

technical field [0001] The present disclosure generally relates to methods of compensating for current sensor offset of an inverter. More particularly, the present disclosure relates to a method and system for compensating a current sensor offset of an inverter capable of compensating for a current sensor offset due to temperature changes that occur during vehicle driving and vehicle starting. Background technique [0002] As known to those skilled in the art, an electric motor for driving an environment-friendly vehicle (for example, a hybrid vehicle or an electric vehicle) can output mechanical torque through three-phase currents with a phase difference of 120°, and the phase difference of 120° Generated by configuring the on-off control of the six switches of the inverter. The three-phase current is an important factor for determining the torque of the motor, and an important role of the inverter is to control the three-phase current. [0003] Inverters require informat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06H02P27/08H02P23/00G01R19/32
CPCG01R19/32H02P23/00H02P27/06H02P27/08H02M7/53875H02M1/0009Y02T10/72
Inventor 郭宪领孙基凤金慧承崔远景
Owner HYUNDAI MOTOR CO LTD
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