PL414898A1 - Method and the system for detecting defects in induction motor, preferably of bearings - Google Patents

Method and the system for detecting defects in induction motor, preferably of bearings

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Publication number
PL414898A1
PL414898A1 PL414898A PL41489815A PL414898A1 PL 414898 A1 PL414898 A1 PL 414898A1 PL 414898 A PL414898 A PL 414898A PL 41489815 A PL41489815 A PL 41489815A PL 414898 A1 PL414898 A1 PL 414898A1
Authority
PL
Poland
Prior art keywords
current
amplitude
differential
motor
phase shift
Prior art date
Application number
PL414898A
Other languages
Polish (pl)
Other versions
PL228213B1 (en
Inventor
Michał Ziółko
Marek Wołoszyk
Tomasz Ciszewski
Original Assignee
Politechnika Gdańska
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politechnika Gdańska filed Critical Politechnika Gdańska
Priority to PL414898A priority Critical patent/PL228213B1/en
Publication of PL414898A1 publication Critical patent/PL414898A1/en
Publication of PL228213B1 publication Critical patent/PL228213B1/en

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  • Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)

Abstract

Sposób polega na tym, że poprzez odpowiednią regulację źródła prądowego o regulowanej częstotliwości, amplitudzie i przesunięciu fazowym wytwarza się prąd o takim samym przesunięciu fazowym i amplitudzie jak prąd stojana badanego silnika oraz o wartości proporcjonalnej do wartości prądu tego silnika, lecz pozbawiony składowych charakterystycznych prądu silnika, wynikających z uszkodzeń występujących w tym silniku. Następnie wytwarza się sygnał różnicowy proporcjonalny do różnicy wartości chwilowych prądów stojana i regulowanego źródła prądowego, w którym to prądzie różnicowym wyodrębnia się składowe charakterystyczne, wynikające z uszkodzeń w badanym silniku. Układ zawiera źródło prądowe o regulowanej częstotliwości, amplitudzie i przesunięciu fazowym, układ różnicowy (UR), układ pomiarowo - rejestrujący (UPR), układ regulujący (URG), a także przetwornik prądu stojana (PI1) i prądu źródła o regulowanej częstotliwości amplitudzie oraz przesunięciu fazowym (PI2). Badany silnik (M) zasilany jest poprzez przetwornik prądu (PI1). Wyjścia sygnałowe przetworników prądu (PI1 i PI2) dołączone są do wejść układu różnicowego (UR). Z wyjścia tego układu sygnał różnicowy dostarczany jest do wejścia układu pomiarowo - rejestracyjnego (UPR) i do wejścia układu regulującego (URG), którego wyjścia połączone są z wejściami sterującymi regulowanego źródła prądowego.The method consists in the fact that by properly adjusting a current source with a regulated frequency, amplitude and phase shift, a current is generated with the same phase shift and amplitude as the stator current of the tested motor and a value proportional to the value of the current of the motor, but without the characteristic components of the motor current resulting from damage to this engine. Then, a differential signal is generated proportional to the difference in the instantaneous values of the stator currents and the regulated current source, in which differential current the characteristic components resulting from defects in the tested motor are extracted. The system includes a current source with adjustable frequency, amplitude and phase shift, differential system (UR), measurement and recording system (UPR), regulating system (URG), as well as a stator current converter (PI1) and source current with adjustable frequency amplitude and offset phase (PI2). The tested motor (M) is powered by the current transducer (PI1). Signal transducers' outputs (PI1 and PI2) are connected to the differential inputs (UR). From the output of this system, the differential signal is supplied to the input of the measuring and recording system (UPR) and to the input of the control system (URG), whose outputs are connected to the control inputs of the regulated current source.

PL414898A 2015-11-23 2015-11-23 Method and the system for detecting defects in induction motor, preferably of bearings PL228213B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL414898A PL228213B1 (en) 2015-11-23 2015-11-23 Method and the system for detecting defects in induction motor, preferably of bearings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL414898A PL228213B1 (en) 2015-11-23 2015-11-23 Method and the system for detecting defects in induction motor, preferably of bearings

Publications (2)

Publication Number Publication Date
PL414898A1 true PL414898A1 (en) 2017-06-05
PL228213B1 PL228213B1 (en) 2018-02-28

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ID=58793699

Family Applications (1)

Application Number Title Priority Date Filing Date
PL414898A PL228213B1 (en) 2015-11-23 2015-11-23 Method and the system for detecting defects in induction motor, preferably of bearings

Country Status (1)

Country Link
PL (1) PL228213B1 (en)

Also Published As

Publication number Publication date
PL228213B1 (en) 2018-02-28

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