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Apparatus and method for extracting impedance parameters of three-phase motor

一种三相电动机、阻抗参数的技术，应用在电动发电机测试、测量电阻/电抗/阻抗、阻抗测量等方向，能够解决减少电动机寿命、降低系统稳定性、驱动系统体积和成本增加等问题

Active Publication Date: 2019-07-19
HYUNDAI MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007]However, the disadvantage of reducing the amount of electrical noise without proper cause analysis is that the size and cost of the drive system increase due to the use of filters
In addition, the method of grounding using brushes has the disadvantage of reducing the life of the motor due to wear due to mechanical contact and reducing the stability of the system due to sparking

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  • Apparatus and method for extracting impedance parameters of three-phase motor
  • Apparatus and method for extracting impedance parameters of three-phase motor
  • Apparatus and method for extracting impedance parameters of three-phase motor

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Embodiment Construction

[0019] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein generally includes motor vehicles such as passenger cars including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, including Watercraft of various boats and ships, aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid vehicles, hydrogen vehicles, and other alternative fuel vehicles (eg, fuels from sources other than petroleum). As referred to herein, a hybrid vehicle is a vehicle that has two or more sources of power, such as both gasoline-powered and electric vehicles.

[0020] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" a...

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Abstract

The invention relates to a method of extracting impedance parameters of a three-phase motor with a five-terminal network including first to third winding wires and opposite shaft ends. The method includes connecting two terminals, selected from among the winding wires and the shaft ends, to input and output terminals in order to measure voltage and current of the terminals and to extract input impedance parameters of the five-terminal network, extracting conversion parameters including voltage and current transfer matrices in a common mode, in which the winding wires are commonly connected tothe input and output terminals, and in a differential mode, in which the winding wires are differentially connected to the input and output terminals, and calculating impedance parameters in a mixed mode, in which transfer impedance components for the shaft ends in the common mode and the differential mode are mixed, using the extracted input impedance parameters and conversion parameters.

Description

technical field [0001] The present invention relates to a device and a method for extracting impedance parameters of a three-phase motor in order to extract the extent to which common-mode and differential-mode electrical noise generated by the three-phase motor is transmitted to the shaft in the form of network parameters. Background technique [0002] With the widespread use of Pulse Width Modulation (PWM) to control the speed of electric motors, it is becoming more and more necessary to solve the problem of Electromagnetic Interference (EMI) in motor drive systems due to the high frequency electromagnetic noise generated in the switching pulses . [0003] In a drive system, a motor includes a plurality of winding wires, and electrical noise generated by switching of an inverter is transmitted to the system mainly through the windings. In particular, since the shaft of the motor is mechanically connected to another device, the voltage and current applied to the shaft dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/16G01R27/02G01R31/34
CPCG01R27/16G01R27/02G01R31/34G01R31/343G01R31/346G01R27/08G01R27/28
Inventor 蔡雄灿文相勋金廷式辛瑛振曹炯俊柳荣坤韩基晋
Owner HYUNDAI MOTOR CO LTD