KR102402805B1 - The method for detecting disconnection of stator of motor - Google Patents

The method for detecting disconnection of stator of motor Download PDF

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KR102402805B1
KR102402805B1 KR1020210141133A KR20210141133A KR102402805B1 KR 102402805 B1 KR102402805 B1 KR 102402805B1 KR 1020210141133 A KR1020210141133 A KR 1020210141133A KR 20210141133 A KR20210141133 A KR 20210141133A KR 102402805 B1 KR102402805 B1 KR 102402805B1
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motor
disconnection
phase
deviation
peak
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KR1020210141133A
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Korean (ko)
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김진수
김민주
김승준
김은수
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지엠비코리아 주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

The present invention relates to a motor stator disconnection detection method for detecting stator disconnection in a three-phase motor without being affected by a noise-attributable peak. The detection method of the present invention includes: a phase current integration step of integrating the current of each phase (U, V, and W) of a three-phase motor; a deviation calculation step of calculating a deviation of each value integrated in the phase current integration step; and a disconnection determination step of determining that disconnection has occurred in the motor if the deviation value calculated in the deviation calculation step is equal to or greater than a predetermined value.

Description

모터 고정자의 단선 감지방법{The method for detecting disconnection of stator of motor }The method for detecting disconnection of stator of motor }

본 발명은 모터 고정자의 단선 감지방법에 대한 것으로서, 더욱 상세하게는 노이즈로 인한 피크의 영향을 받지않고 3상 모터 고정자의 단선을 감지할 수 있는 모터 고정자의 단선 감지방법에 대한 것이다.The present invention relates to a method for detecting disconnection of a motor stator, and more particularly, to a method for detecting disconnection of a motor stator capable of detecting disconnection of a three-phase motor stator without being affected by a peak due to noise.

하이브리드 차량이나 전기 차량 뿐만 아니라 일반적인 휘발유 차량에도 모터가 장착된다. 모터는 배터리로부터 전류를 공급받는다. 이때 단선이 되어 전류가 모터에 원활히 공급되지 않는 경우 모터 뿐만 아니라 다른 부품들이 파손될 수 있다. 그래서 모터의 고정자의 단선 발생시 그 감지가 요구되고 있다.A motor is installed in not only hybrid or electric vehicles but also general gasoline vehicles. The motor receives current from the battery. At this time, if the current is not smoothly supplied to the motor due to a disconnection, the motor as well as other parts may be damaged. Therefore, the detection is required when the breakage of the stator of the motor occurs.

모터의 고정자는 일반적으로 3상(U, V, W)으로 구성되며, 종래의 경우 모터 고정자의 단선 발생 여부를 감지하기 위해서는 각각 상의 전류 값의 크기를 측정하여 측정 값의 차이가 일정한 값 이상일 경우 단선의 발생으로 판단하였다. The stator of the motor is generally composed of three phases (U, V, W), and in the conventional case, in order to detect whether a breakage of the motor stator has occurred, the magnitude of the current value of each phase is measured and the difference between the measured values is more than a certain value. It was judged as the occurrence of disconnection.

더욱 상세히 설명하면 먼저, 도 1과 같이 360°를 60°씩 6구역으로 나누어서 6개의 섹터로 구분하였다. 예를들면 섹터1은 -30°~ 30°, 섹터2는 30°~90°등으로 구분하였다.In more detail, first, as shown in FIG. 1, 360° was divided into 6 zones by 60° and divided into 6 sectors. For example, sector 1 is divided into -30° to 30°, sector 2 is divided into 30° to 90°.

이때 모터의 구동이 정상적인 구동상태라면 표 1에 도시된 Ipeak_pos = Ipeak_neg이며, Ipeak_half는 Ipeak_pos 또는 Ipeak_neg의 1/2이다. 그래서 정상적인 경우에는 Ipeak_pos/Ipeak_neg = 1, Ipeak_half = Ipeak_pos/2 또는 Ipeak_neg/2이다. 따라서 종래의 경우에는 측정된 각각의 상의 전류값이 정상적인 크기에서 일정한 범위를 벗어날 경우 단선으로 판단하였다.At this time, if the motor is in a normal driving state, I peak_pos = I peak_neg shown in Table 1, and I peak_half is 1/2 of I peak_pos or I peak_neg . So, in a normal case, I peak_pos /I peak_neg = 1, I peak_half = I peak_pos /2 or I peak_neg /2. Therefore, in the conventional case, when the measured current value of each phase is out of a certain range from the normal magnitude, it is determined as a disconnection.

섹터sector Ipeak_pos I peak_pos Ipeak_neg I peak_neg Ipeak_half I peak_half 1One ｜IWpeak｜｜I Wpeak ｜ ｜IVpeak｜｜I Vpeak ｜ ｜IUpeak｜｜I Upeak ｜ 22 ｜IUpeak｜｜I Upeak ｜ ｜IVpeak｜｜I Vpeak ｜ ｜IWpeak｜｜I Wpeak ｜ 33 ｜IUpeak｜｜I Upeak ｜ ｜IWpeak｜｜I Wpeak ｜ ｜IVpeak｜｜I Vpeak ｜ 44 ｜IVpeak｜｜I Vpeak ｜ ｜IWpeak｜｜I Wpeak ｜ ｜IUpeak｜｜I Upeak ｜ 55 ｜IVpeak｜｜I Vpeak ｜ ｜IUpeak｜｜I Upeak ｜ ｜IWpeak｜｜I Wpeak ｜ 66 ｜IWpeak｜｜I Wpeak ｜ ｜IUpeak｜｜I Upeak ｜ ｜IVpeak｜｜I Vpeak ｜

등록특허 제10-1650954호(등록일자 2016년 8월 18일)Registered Patent No. 10-1650954 (Registration Date August 18, 2016) 등록특허 제10-1532602호(등록일자 2015년 6월 24일)Registered Patent No. 10-1532602 (Registration Date: June 24, 2015) 등록특허 제10-1787273호(등록일자 2017년 10월 11일)Registered Patent No. 10-1787273 (Registration Date: October 11, 2017) 등록실용신안실0111695호(공개일자 1994년 4월 18일)Registered Utility Model Office No. 0111695 (published on April 18, 1994)

전류 측정시 도 2에 도시된 바와 같이 노이즈가 발생하면 노이즈로 인한 피크값이 발생하고 이 경우에는 노이즈로 인한 피크값이 전류의 최대치로 검출된다. 그래서 이 경우 위에서 설명한 정상적인 범위를 벗으나므로 단선으로 감지된다. 따라서 종래의 방법의 경우 노이즈로 인한 피크가 발생하면, 이를 단선으로 판단하므로 오류가 발생하므로 단선을 제대로 감지하지 못한다는 문제점이 있었다.As shown in FIG. 2 when measuring current, if noise is generated, a peak value due to noise is generated, and in this case, the peak value due to noise is detected as the maximum value of the current. So, in this case, it is out of the normal range described above, so it is detected as a disconnection. Therefore, in the case of the conventional method, when a peak due to noise occurs, it is determined as a disconnection, and thus an error occurs, so there is a problem in that the disconnection cannot be properly detected.

본 발명은 상기의 문제점을 해결하기 위한 것이다. 본 발명은 노이즈로 인한 피크가 발생하더라도 단선 여부를 제대로 판단할 수 있는 모터 고정자의 단선 감지방법을 제공하는 것을 목적으로 한다.The present invention is to solve the above problems. An object of the present invention is to provide a method for detecting disconnection of a motor stator capable of properly determining whether a disconnection occurs even when a peak due to noise occurs.

본 발명에 따른 모터 고정자의 단선 감지방법은 U, V, W의 3상 모터의 각각의 상의 전류를 각각 적분하는 상전류적분단계와, 상기 상전류적분단계에서 각각 적분된 값의 편차를 계산하는 편차계산단계와, 상기 편차계산단계에서 계산된 편차 값이 일정한 값 이상이면 상기 모터에 단선이 발생한 것으로 판단하는 단선판단단계를 포함한다.A method for detecting disconnection of a motor stator according to the present invention includes a phase current integration step of integrating the currents of each phase of a three-phase motor of U, V, and W, respectively, and a deviation calculation of calculating the deviation of the values integrated in the phase current integration step, respectively. and a disconnection determination step of determining that a disconnection has occurred in the motor when the deviation value calculated in the deviation calculating step is equal to or greater than a predetermined value.

본 발명에 의하면, 각각의 상 전류를 적분하여 그 편차를 계산하므로, 각각의 상에 노이즈가 발생하더라도 노이즈의 영향을 최소화시킬 수 있다. 그래서 노이즈가 발생하더라도 모터의 단선판단을 정확하게 할 수 있다.According to the present invention, since the deviation is calculated by integrating each phase current, even if noise is generated in each phase, the influence of the noise can be minimized. Therefore, even if noise occurs, it is possible to accurately determine the disconnection of the motor.

도 1은 종래의 모터 고정자의 단선을 감지하기 위한 개념도,
도 2는 모터 고정자의 임의의 전류 상에 노이즈가 발생한 개념도,
도 3은 본 발명에 따른 모터 고정자의 각각의 전류 상의 개념도,
도 4는 본 발명에 따른 모터 고정자의 단선 감지방법의 개념도이다.1 is a conceptual diagram for detecting a disconnection of a conventional motor stator;
2 is a conceptual diagram in which noise is generated on an arbitrary current of the motor stator;
3 is a conceptual diagram of each current phase of a motor stator according to the present invention;
4 is a conceptual diagram of a method for detecting disconnection of a motor stator according to the present invention.

도 3 및 도 4를 사용하여 본 발명에 따른 모터 고정자의 단선 감지방법의 일 실시예를 설명한다.An embodiment of a method for detecting disconnection of a motor stator according to the present invention will be described with reference to FIGS. 3 and 4 .

본 발명에 따른 모터 고정자의 단선 감지방법은 상전류적분단계와, 편차계산단계와, 단선판단단계를 포함한다.The method for detecting disconnection of a motor stator according to the present invention includes a phase current integration step, a deviation calculation step, and a disconnection determination step.

상기 상전류적분단계는 도 3에 도시된 U, V, W의 3상 모터의 각각의 상의 전류를 각각 적분한다. 그러면 도 4에 도시된 바와 같이 각각의 적분 값이 계산된다.The phase current integration step integrates the currents of each phase of the three-phase motor of U, V, and W shown in FIG. 3 . Then, each integral value is calculated as shown in FIG. 4 .

이때 도 3에 도시된 U, V, W의 3상에 노이즈가 발생하더라도 노이즈는 아주 짧은 시간에 발생하므로 이를 적분하더라도 그 적분 값의 차이는 크지않다. 즉 노이즈로 인한 피크 값은 크게 나올 수 있지만 노이즈의 적분값은 크지 않기 때문에 노이즈가 발생하더라도 각각의 상의 적분값의 변화에는 영향을 크게 미치지 아니한다.At this time, even if noise occurs in the three phases of U, V, and W shown in FIG. 3, since the noise is generated in a very short time, even if it is integrated, the difference in the integral value is not large. That is, the peak value due to noise may be large, but since the integral value of the noise is not large, even if noise occurs, the change in the integral value of each phase is not significantly affected.

상기 편차계산단계는 도 4에 도시된 각각의 적분 값의 편차를 계산한다. 그러면 도 4에 도시된 바와 같이 각각의 편차값이 계산된다.The deviation calculating step calculates the deviation of each integral value shown in FIG. 4 . Then, each deviation value is calculated as shown in FIG. 4 .

상기 단선판단단계는 상기 편차계산단계에서 계산된 편차 값이 정상 범위를 벗어난 일정한 값 이상이면 모터에 단선이 발생한 것으로 판단한다.In the disconnection determination step, if the deviation value calculated in the deviation calculation step is greater than or equal to a certain value out of the normal range, it is determined that the motor disconnection has occurred.

따라서 본 실시예에 의하면 각각의 상에 노이즈가 발생하더라도 노이즈의 영향을 받지 않고 모터에 단선이 발생한 것을 판단할 수 있다.Therefore, according to the present embodiment, even if noise is generated in each phase, it can be determined that the motor is disconnected without being affected by the noise.

Claims (1)

U, V, W의 3상 모터의 각각의 상의 전류를 각각 적분하는 상전류적분단계와,
상기 상전류적분단계에서 각각 적분된 값의 편차를 계산하는 편차계산단계와,
상기 편차계산단계에서 계산된 편차 값이 일정한 값 이상이면 상기 모터에 단선이 발생한 것으로 판단하는 단선판단단계를 포함하는 것을 특징으로 하는 모터 고정자의 단선 감지방법.A phase current integration step of integrating the currents of each phase of the three-phase motor of U, V, and W, respectively;
A deviation calculation step of calculating the deviation of each integrated value in the phase current integration step;
and a disconnection determination step of determining that a disconnection has occurred in the motor when the deviation value calculated in the deviation calculation step is greater than or equal to a certain value.
KR1020210141133A 2021-10-21 2021-10-21 The method for detecting disconnection of stator of motor KR102402805B1 (en)

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Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0111695Y1 (en) 1992-09-15 1998-10-01 이헌조 Circuit for detecting the disconnection of a motor
JP2005147672A (en) * 2003-11-11 2005-06-09 Meidensha Corp Disconnection detecting system
KR20120006308A (en) * 2010-07-12 2012-01-18 현대모비스 주식회사 Disconnection sensing method of driving motor
JP5288165B2 (en) * 2008-08-05 2013-09-11 スズキ株式会社 AC motor control device
KR101330804B1 (en) * 2012-06-26 2013-11-18 창원대학교 산학협력단 Fault detect apparatus for three phase alternating-current motor and method thereof
KR20140080566A (en) * 2012-12-07 2014-07-01 중앙대학교 산학협력단 Remote detection and cut-off system for current leakage type of sensor network
KR20150022111A (en) * 2013-08-22 2015-03-04 현대모비스 주식회사 Apparatus and Method for detecting fails of Alternating Current motor
KR101532602B1 (en) 2013-11-29 2015-06-30 현대모비스 주식회사 Method for motor error detecting of motor driven power steering
JP2017138313A (en) * 2016-02-03 2017-08-10 富士電機株式会社 Voltage abnormality detection device, program, and voltage abnormality detection method
KR101787273B1 (en) 2016-06-30 2017-10-19 현대오트론 주식회사 Motor driving apparatus and method for detecting disconnection of wire of the same
JP2018148611A (en) * 2017-03-01 2018-09-20 株式会社デンソー Motor control device
WO2019155585A1 (en) * 2018-02-08 2019-08-15 三菱電機株式会社 Electric motor control device and cable disconnection detection method

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0111695Y1 (en) 1992-09-15 1998-10-01 이헌조 Circuit for detecting the disconnection of a motor
JP2005147672A (en) * 2003-11-11 2005-06-09 Meidensha Corp Disconnection detecting system
JP5288165B2 (en) * 2008-08-05 2013-09-11 スズキ株式会社 AC motor control device
KR101650954B1 (en) 2010-07-12 2016-08-24 현대모비스 주식회사 Disconnection sensing method of driving motor
KR20120006308A (en) * 2010-07-12 2012-01-18 현대모비스 주식회사 Disconnection sensing method of driving motor
KR101330804B1 (en) * 2012-06-26 2013-11-18 창원대학교 산학협력단 Fault detect apparatus for three phase alternating-current motor and method thereof
KR20140080566A (en) * 2012-12-07 2014-07-01 중앙대학교 산학협력단 Remote detection and cut-off system for current leakage type of sensor network
KR20150022111A (en) * 2013-08-22 2015-03-04 현대모비스 주식회사 Apparatus and Method for detecting fails of Alternating Current motor
KR101532602B1 (en) 2013-11-29 2015-06-30 현대모비스 주식회사 Method for motor error detecting of motor driven power steering
JP2017138313A (en) * 2016-02-03 2017-08-10 富士電機株式会社 Voltage abnormality detection device, program, and voltage abnormality detection method
KR101787273B1 (en) 2016-06-30 2017-10-19 현대오트론 주식회사 Motor driving apparatus and method for detecting disconnection of wire of the same
JP2018148611A (en) * 2017-03-01 2018-09-20 株式会社デンソー Motor control device
WO2019155585A1 (en) * 2018-02-08 2019-08-15 三菱電機株式会社 Electric motor control device and cable disconnection detection method

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